1
|
Lachant DJ, Lachant MD, Haight D, White RJ. Cardiac effort and 6-min walk distance correlate with stroke volume measured by cardiac magnetic resonance imaging. Pulm Circ 2024; 14:e12355. [PMID: 38572082 PMCID: PMC10985409 DOI: 10.1002/pul2.12355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/18/2024] [Accepted: 03/05/2024] [Indexed: 04/05/2024] Open
Abstract
Right ventricular (RV) dysfunction in pulmonary arterial hypertension (PAH) is associated with poor outcomes. Cardiac magnetic resonance imaging (cMRI) is the gold standard for volumetric assessment, and few reports have correlated 6-min walk distance (6MWD) and cMRI parameters in PAH. Cardiac Effort, (the number of heart beats used during 6-min walk test)/(6MWD), incorporates physiologic changes into walk distance and has been associated with stroke volume (SV) measured by nuclear imaging and indirect Fick. Here, we aimed to interrogate the relationship of Cardiac Effort and 6MWD with SV measured by the gold standard, cMRI. This was a single-center, observational, prospective study in Group 1 PAH patients. Subjects completed 6-min walk with heart rate monitoring (Cardiac Effort) and cMRI within 24 h. cMRI was correlated to Cardiac Effort and 6MWD using Spearman Correlation Coefficient. Twenty-five participants with a wide range of RV function completed both cMRI and Cardiac Effort. There was a strong correlation between left ventricle SV index and both Cardiac Effort (r = -0.70, p = 0.0001) and 6MWD (r = 0.67, p = 0.0002). Cardiac Effort and 6MWD were statistically separated in patients at prognostically significant thresholds of left ventricle SV index (>31 ml/m2), RV Ejection Fraction (>35%), and SV/End Systolic Volume ( > 0.53). Cardiac Effort and 6MWD are noninvasive ways to gain insight into those with impaired SV. 6MWD may correlate better with SV than previously thought and heart rate monitoring provides physiologic context to the walk distance obtained.
Collapse
Affiliation(s)
- Daniel J. Lachant
- Department of Medicine, Division of Pulmonary and Critical Care MedicineUniversity of Rochester Medical CenterRocesterNYUSA
| | - Michael D. Lachant
- Department of Medicine, Division of Pulmonary and Critical Care MedicineUniversity of Rochester Medical CenterRocesterNYUSA
| | - Deborah Haight
- Department of Medicine, Division of Pulmonary and Critical Care MedicineUniversity of Rochester Medical CenterRocesterNYUSA
| | - R. James White
- Department of Medicine, Division of Pulmonary and Critical Care MedicineUniversity of Rochester Medical CenterRocesterNYUSA
| |
Collapse
|
2
|
Nizhnikava V, Reiter U, Kovacs G, Reiter C, Kräuter C, Olschewski H, Fuchsjäger M, Reiter G. Myocardial strain parameters in pulmonary hypertension are determined by changes in volumetric function rather than by hemodynamic alterations. Eur J Radiol 2024; 170:111187. [PMID: 37995513 DOI: 10.1016/j.ejrad.2023.111187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/24/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023]
Abstract
PURPOSE To investigate associations of cardiac magnetic resonance feature-tracking-derived left (LV) and right ventricular (RV) global myocardial peak strains and strain rates with volumetric function and hemodynamic parameters to identify the major determinants of myocardial strain alterations in pulmonary hypertension (PH). METHODS Sixty-seven patients with PH or at risk of developing PH underwent right heart catheterization (RHC) and cine realtime imaging at 3 T. RHC parameters included mean pulmonary arterial pressure (mPAP), which was used for the diagnosis of PH. LV and RV volumetric function and feature-tracking-derived global radial, circumferential, and longitudinal (GLS) peak strains, together with their strain rates, were evaluated from cine images using routine software. Furthermore, myocardial strain parameters of 24 healthy subjects were evaluated as controls. Means were compared by t-test; relationships between parameters were investigated by correlation and regression analysis. RESULTS Compared to controls, RV-GLS, all RV systolic strain rates and the LV systolic longitudinal strain rate showed lower magnitudes in PH (RV-GLS: -21 ± 4% vs. -16 ± 5%, p < 0.0001); the strongest univariate correlate to mPAP was the RV-GLS (r = 0.59). All LV and RV strain parameters yielded stronger correlations with their respective ejection fractions. In bi-linear models using mPAP and ejection fraction as predictors, mPAP remained significant only for diastolic LV radial and circumferential strain rates. CONCLUSION Impairment of myocardial strains is more strongly associated with alterations in LV and RV volumetric function parameters than elevated mPAP, therefore limiting diagnostic information of myocardial strain parameters in PH.
Collapse
Affiliation(s)
- Volha Nizhnikava
- Department of Radiology, Medical University of Graz, Austria; Department of Radiology, Kantonsspital Graubuenden, Chur, Switzerland.
| | - Ursula Reiter
- Department of Radiology, Medical University of Graz, Austria.
| | - Gabor Kovacs
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria & LBI for Lung Vascular Research Graz, Austria.
| | - Clemens Reiter
- Department of Radiology, Medical University of Graz, Austria.
| | - Corina Kräuter
- Department of Radiology, Medical University of Graz, Austria.
| | - Horst Olschewski
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria & LBI for Lung Vascular Research Graz, Austria.
| | | | - Gert Reiter
- Department of Radiology, Medical University of Graz, Austria; Research & Development, Siemens Healthcare Diagnostics GmbH, Graz, Austria.
| |
Collapse
|
3
|
Kim SM, Randall EB, Jezek F, Beard DA, Chesler NC. Computational modeling of ventricular-ventricular interactions suggest a role in clinical conditions involving heart failure. Front Physiol 2023; 14:1231688. [PMID: 37745253 PMCID: PMC10512181 DOI: 10.3389/fphys.2023.1231688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/09/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction: The left (LV) and right (RV) ventricles are linked biologically, hemodynamically, and mechanically, a phenomenon known as ventricular interdependence. While LV function has long been known to impact RV function, the reverse is increasingly being realized to have clinical importance. Investigating ventricular interdependence clinically is challenging given the invasive measurements required, including biventricular catheterization, and confounding factors such as comorbidities, volume status, and other aspects of subject variability. Methods: Computational modeling allows investigation of mechanical and hemodynamic interactions in the absence of these confounding factors. Here, we use a threesegment biventricular heart model and simple circulatory system to investigate ventricular interdependence under conditions of systolic and diastolic dysfunction of the LV and RV in the presence of compensatory volume loading. We use the end-diastolic pressure-volume relationship, end-systolic pressure-volume relationship, Frank Starling curves, and cardiac power output as metrics. Results: The results demonstrate that LV systolic and diastolic dysfunction lead to RV compensation as indicated by increases in RV power. Additionally, RV systolic and diastolic dysfunction lead to impaired LV filling, interpretable as LV stiffening especially with volume loading to maintain systemic pressure. Discussion: These results suggest that a subset of patients with intact LV systolic function and diagnosed to have impaired LV diastolic function, categorized as heart failure with preserved ejection fraction (HFpEF), may in fact have primary RV failure. Application of this computational approach to clinical data sets, especially for HFpEF, may lead to improved diagnosis and treatment strategies and consequently improved outcomes.
Collapse
Affiliation(s)
- Salla M. Kim
- Department of Biomedical Engineering, Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, University of California Irvine, Irvine, CA, United States
| | - E. Benjamin Randall
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, United States
| | - Filip Jezek
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, United States
- Department of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Daniel A. Beard
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, United States
| | - Naomi C. Chesler
- Department of Biomedical Engineering, Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, University of California Irvine, Irvine, CA, United States
| |
Collapse
|
4
|
Vahdatpour C, Epstein S, Jones K, Smoot M, Parker A, Ryan J, Bryant A. A review of cardio-pulmonary microvascular dysfunction in pulmonary hypertension. AMERICAN HEART JOURNAL PLUS : CARDIOLOGY RESEARCH AND PRACTICE 2023; 26:100255. [PMID: 38510189 PMCID: PMC10946046 DOI: 10.1016/j.ahjo.2023.100255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 03/22/2024]
Abstract
Microvascular dysfunction progressing to pulmonary hypertension can be a primary cause of right ventricular failure or a secondary cause because of an underlying systemic illness. Little is known regarding the etiology and epidemiology of coronary microvascular dysfunction in pulmonary hypertension. Despite this limitation, its presence has been described in patients with pulmonary hypertension. This review focuses on the pathogenesis of cardiac and pulmonary microvascular dysfunction in pulmonary hypertension. Additionally, this review provides a contemporary assessment on the diagnosis and treatment of microvascular dysfunction in patients in pulmonary hypertension. This topic is important to raise awareness of microvascular dysfunction in the coronary and pulmonary circulation, so that future studies will investigate its impact on the pulmonary hypertension patient cohort.
Collapse
Affiliation(s)
- Cyrus Vahdatpour
- Department of Pulmonary Critical Care and Sleep Medicine, University of Florida, Gainesville, FL, USA
| | - Samuel Epstein
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Kirk Jones
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Madeline Smoot
- Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Alex Parker
- Department of Cardiology, University of Florida, Gainesville, FL, USA
| | - John Ryan
- Department of Cardiovascular Medicine, University of Utah, Salt Lake City, UT, USA
| | - Andrew Bryant
- Department of Pulmonary Critical Care and Sleep Medicine, University of Florida, Gainesville, FL, USA
| |
Collapse
|
5
|
Earl CC, Soslow JH, Markham LW, Goergen CJ. Myocardial strain imaging in Duchenne muscular dystrophy. Front Cardiovasc Med 2022; 9:1031205. [PMID: 36505382 PMCID: PMC9727102 DOI: 10.3389/fcvm.2022.1031205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/03/2022] [Indexed: 11/24/2022] Open
Abstract
Cardiomyopathy (CM) is the leading cause of death for individuals with Duchenne muscular dystrophy (DMD). While DMD CM progresses rapidly and fatally for some in teenage years, others can live relatively symptom-free into their thirties or forties. Because CM progression is variable, there is a critical need for biomarkers to detect early onset and rapid progression. Despite recent advances in imaging and analysis, there are still no reliable methods to detect the onset or progression rate of DMD CM. Cardiac strain imaging is a promising technique that has proven valuable in DMD CM assessment, though much more work has been done in adult CM patients. In this review, we address the role of strain imaging in DMD, the mechanical and functional parameters used for clinical assessment, and discuss the gaps where emerging imaging techniques could help better characterize CM progression in DMD. Prominent among these emerging techniques are strain assessment from 3D imaging and development of deep learning algorithms for automated strain assessment. Improved techniques in tracking the progression of CM may help to bridge a crucial gap in optimizing clinical treatment for this devastating disease and pave the way for future research and innovation through the definition of robust imaging biomarkers and clinical trial endpoints.
Collapse
Affiliation(s)
- Conner C. Earl
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States
- Indiana University School of Medicine, Indianapolis, IN, United States
| | - Jonathan H. Soslow
- Division of Pediatric Cardiology, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Larry W. Markham
- Division of Pediatric Cardiology, Riley Children's Hospital, Indiana University Health, Indianapolis, IN, United States
| | - Craig J. Goergen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States
- Indiana University School of Medicine, Indianapolis, IN, United States
| |
Collapse
|
6
|
Managing pulmonary arterial hypertension: how to select and facilitate successful transplantation. Curr Opin Organ Transplant 2022; 27:169-176. [PMID: 35649107 DOI: 10.1097/mot.0000000000000980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Despite improvements in available medical therapies, pulmonary arterial hypertension (PAH) remains a progressive, ultimately fatal disorder. Lung transplantation is a viable treatment option for PAH patients with advanced disease. RECENT FINDINGS Recent guidelines from the International Society of Heart and Lung Transplantation (ISHLT) have updated recommendations regarding time of referral and listing for lung transplantation in PAH. The new guidelines emphasize earlier referral for transplant evaluation to ensure adequate time for proper evaluation and listing. They also incorporate objective risk stratification criteria to assist in decision-making regarding timing of referral and listing. With regards to the transplant procedure, bilateral lung transplantation has largely supplanted heart-lung transplantation as the procedure of choice for transplantation for advanced PAH. Exceptions to this include patients with PAH because of congenital heart disease and those with concurrent LV dysfunction. Use of mechanical support via venoarterial ECMO initiated before transplantation and continued into the early postoperative period is emerging as a standard of care and may help to reduce early posttransplant mortality in this population. There has been increased recognition of the importance of WHO Group 3 pulmonary hypertension. Many of the lessons learned from PAH may be applied when transplanting patients with severe WHO Group 3 pulmonary hypertension. SUMMARY Patients with PAH present unique challenges with regards to transplantation that require a therapeutic approach distinct from other lung disorders. Lung transplantations for PAH are high-risk endeavors best performed at centers with expertise in management of both PAH and extracorporeal support.
Collapse
|
7
|
Schäfer M, Frank BS, Ivy DD, Mitchell MB, Collins KK, Jone PN, von Alvensleben JC. Repolarization Dispersion Is Associated With Diastolic Electromechanical Discoordination in Children With Pulmonary Arterial Hypertension. J Am Heart Assoc 2022; 11:e024787. [PMID: 35229614 PMCID: PMC9075289 DOI: 10.1161/jaha.121.024787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Electromechanical dyssynchrony is a well described comorbidity in pulmonary arterial hypertension (PAH). ECG‐derived measurements reflective of diastolic dysfunction and electromechanical imaging markers are yet to be investigated. In this study we investigated the ECG‐ derived marker of repolarization dispersion, interval between the peak and end of T wave (TpTe), in pediatric patients with PAH and left ventricular (LV) diastolic dysfunction. Methods and Results We measured TpTe from a standard 12‐lead ECG and in 30 children with PAH and matched control subjects. All participants underwent same‐day echocardiography and myocardial strain analysis to calculate the diastolic electromechanical discoordination marker diastolic relaxation fraction. When compared with control subjects, patients with PAH had increased TpTe (93±15 versus 81±12 ms, P=0.001) and elevated diastolic relaxation fraction (0.33±0.10 versus 0.27±0.03, P=0.001). Patients with PAH with LV diastolic dysfunction had significantly increased TpTe when compared with patients with PAH without diastolic dysfunction (P=0.012) and when compared with control group (P<0.001). Similarly, patients with PAH with LV diastolic dysfunction had increased diastolic relaxation fraction when compared with PAH patients without diastolic dysfunction (P=0.007) and when compared with control group (P<0.001). A 10‐ms increase in TpTe was significantly associated with 0.023 increase in diastolic relaxation fraction (P=0.008) adjusting for body surface area, heart rate, right ventricular volumes, and function. Conclusions Prolonged myocardial repolarization and abnormal LV diastolic electromechanical discoordination exist in parallel in children with PAH and are associated with worse LV diastolic function and functional class.
Collapse
Affiliation(s)
- Michal Schäfer
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| | - Benjamin S Frank
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| | - D Dunbar Ivy
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| | - Max B Mitchell
- Section of Congenital Heart Surgery Heart InstituteChildren's Hospital ColoradoUniversity of Colorado DenverAnschutz Medical Campus Aurora CO
| | - Kathryn K Collins
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| | - Pei-Ni Jone
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| | - Johannes C von Alvensleben
- Division of Cardiology Heart InstituteChildren's Hospital ColoradoUniversity of Colorado Denver Denver CO
| |
Collapse
|
8
|
Abstract
Pulmonary arterial hypertension (PAH) is a progressive fatal disease. Although medical therapies have improved the outlook for these patients, there still exists a cohort of patients with PAH who are refractory to these therapies. Lung transplantation (LT), and in certain cases heart-lung transplantation (HLT), is a therapeutic option for patients with severe PAH who are receiving optimal therapy yet declining. ECMO may serve as a bridge to transplant or recovery in appropriate patients. Although, the mortality within the first 3 months after transplant is higher in PAH recipients than the other indications for LT, and the long-term survival after LT is excellent for this group of individuals. In this review, we discuss the indications for LT in PAH patients, when to refer and list patients for LT, the indications for double lung transplant (DLT) versus HLT for PAH patients, types of advanced circulatory support for severe PAH, and short and long-term outcomes in transplant recipients with PAH.
Collapse
Affiliation(s)
- Marie M Budev
- Lung and Heart Lung Transplant Program, Respiratory Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk A -90, Cleveland, OH 44195, USA.
| | - James J Yun
- Lung Transplant Program, Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, 9500 Euclid Avenue, Desk J4-1, Cleveland, OH 44195, USA
| |
Collapse
|
9
|
Latus H, Meierhofer C. Role of cardiovascular magnetic resonance in pediatric pulmonary hypertension-novel concepts and imaging biomarkers. Cardiovasc Diagn Ther 2021; 11:1057-1069. [PMID: 34527532 DOI: 10.21037/cdt-20-270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 04/15/2020] [Indexed: 11/06/2022]
Abstract
Pulmonary hypertension (PH) in children is a heterogenous disease of the small pulmonary arteries characterized by a progressive increase in pulmonary vascular resistance. Despite adequate medical therapy, long-term pressure overload is frequently associated with a progressive course leading to right ventricular failure and ultimately death. Invasive hemodynamic assessment by cardiac catheterization is crucial for initial diagnosis, risk stratification and therapeutic strategy. Although echocardiography remains the most important imaging modality for the assessment of right ventricular function and pulmonary hemodynamics, cardiovascular magnetic resonance (CMR) has emerged as a valuable non-invasive imaging technique that enables comprehensive evaluation of biventricular performance, blood flow, morphology and the myocardial tissue. In this review, we summarize the principles and applications of CMR in the evaluation of pediatric PH patients and present an update about novel CMR based concepts and imaging biomarkers that may provide further diagnostic, therapeutic and prognostic information.
Collapse
Affiliation(s)
- Heiner Latus
- Clinic for Congenital Heart Disease and Pediatric Cardiology, German Heart Center Munich, Munich, Germany
| | - Christian Meierhofer
- Clinic for Congenital Heart Disease and Pediatric Cardiology, German Heart Center Munich, Munich, Germany
| |
Collapse
|
10
|
Echocardiography in Pulmonary Arterial Hypertension: Is It Time to Reconsider Its Prognostic Utility? J Clin Med 2021; 10:jcm10132826. [PMID: 34206876 PMCID: PMC8268493 DOI: 10.3390/jcm10132826] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 12/26/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is characterized by an insult in the pulmonary vasculature, with subsequent right ventricular (RV) adaptation to the increased afterload that ultimately leads to RV failure. The awareness of the importance of RV function in PAH has increased considerably because right heart failure is the predominant cause of death in PAH patients. Given its wide availability and reduced cost, echocardiography is of paramount importance in the evaluation of the right heart in PAH. Several echocardiographic parameters have been shown to have prognostic implications in PAH; however, the role of echocardiography in the risk assessment of the PAH patient is limited under the current guidelines. This review discusses the echocardiographic evaluation of the RV in PAH and during therapy, and its prognostic implications, as well as the potential significant role of repeated echocardiographic assessment in the follow-up of patients with PAH.
Collapse
|
11
|
The Heart Failure with Preserved Ejection Fraction Conundrum-Redefining the Problem and Finding Common Ground? Curr Heart Fail Rep 2021; 17:34-42. [PMID: 32112345 DOI: 10.1007/s11897-020-00454-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE OF REVIEW Heart failure with preserved ejection fraction (HFpEF) or diastolic heart failure (DHF) makes up more than half of all congestive heart failure presentations (CHF). With an ageing population, the case load and the financial burden is projected to increase, even to epidemic proportions. CHF hospitalizations add too much of the financial and infrastructure strain. Unlike systolic heart failure (SHF), much is still either uncertain or unknown. Specifically, in epidemiology, the disease burden is established; however, risk factors and pathophysiological associations are less clear; diagnostic tools are based on rigid parameters without the ability to accurately monitor treatments effects and disease progression; finally, therapeutics are similar to SHF but without prognostic data for efficacy. RECENT FINDINGS The last several years have seen guidelines changing to account for greater epidemiological observations. Most of these remain general observation of shortness of breath symptom matched to static echocardiographic parameters. The introduction of exercise diastolic stress test has been welcome and warrants greater focus. HFpEF is likely to see new thinking in the coming decades. This review provides some of perspective on this topic.
Collapse
|
12
|
Indication of the prognosis of pulmonary hypertension by using CMR function parameters. Eur Radiol 2021; 31:7121-7131. [PMID: 33738599 DOI: 10.1007/s00330-021-07835-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/15/2021] [Accepted: 02/24/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE This study aimed to compare the cardiac function among different sub-types of pulmonary hypertension (PH) and to explore the independent predictors of major adverse cardiovascular events (MACE). METHODS Eighty-seven PH patients diagnosed by right heart catheterization (RHC) were recruited. Patients underwent cardiac magnetic resonance (CMR) and RHC examination within 2 weeks. The CMR images were analyzed to calculate the cardiac functional parameters including right ventricle (RV) and left ventricle (LV) end-diastolic volume index (EDVI), end-systolic volume index (ESVI), stroke volume index (SVI), ejection fraction (EF), tricuspid annular plane systolic excursion (TAPSE), and myocardial mass (MM). The median follow-up time was 46.5 months (interquartile range: 26-65.5 months), and the endpoints were the occurrence of MACE. RESULTS RVEDVI, LVEDVI, and LVESVI were higher in congenital heart disease-related PH (CHD-PH) than in other sub-types (p < 0.05). RVMM, RVSVI, and RVCI were highest in CHD-PH. There was no significant difference in the prognosis among different sub-types (p > 0.05). Comparing with the non-MACE group, RVEF, TAPSE, and LVSVI significantly decreased in the MACE group, while the RVESVI significantly increased (p < 0.05). TAPSE ≤ 15.65 mm and LVSVI ≤ 30.27 mL/m2 were significant independent predictors of prognosis in PH patients. CONCLUSION CHD-PH had a higher RV function reserve but lowest LVEF comparing to other subgroups. TAPSE and LVSVI could contribute to the prediction of MACE in PH patients. KEY POINTS • CMR imaging is a noninvasive and accurate tool to assess ventricular function. • CHD-PH had higher RV function reserve but lowest LVEF. • TAPSE and LVSVI could contribute to the prediction of MACE in PH patients.
Collapse
|
13
|
Inampudi C, Tedford RJ, Hemnes AR, Hansmann G, Bogaard HJ, Koestenberger M, Lang IM, Brittain EL. Treatment of right ventricular dysfunction and heart failure in pulmonary arterial hypertension. Cardiovasc Diagn Ther 2020; 10:1659-1674. [PMID: 33224779 PMCID: PMC7666956 DOI: 10.21037/cdt-20-348] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/13/2020] [Indexed: 01/09/2023]
Abstract
Right heart dysfunction and failure is the principal determinant of adverse outcomes in patients with pulmonary arterial hypertension (PAH). In addition to right ventricular (RV) dysfunction, systemic congestion, increased afterload and impaired myocardial contractility play an important role in the pathophysiology of RV failure. The behavior of the RV in response to the hemodynamic overload is primarily modulated by the ventricular interaction and its coupling to the pulmonary circulation. The presentation can be acute with hemodynamic instability and shock or chronic producing symptoms of systemic venous congestion and low cardiac output. The prognostic factors associated with poor outcomes in hospitalized patients include systemic hypotension, hyponatremia, severe tricuspid insufficiency, inotropic support use and the presence of pericardial effusion. Effective therapeutic management strategies involve identification and effective treatment of the triggering factors, improving cardiopulmonary hemodynamics by optimization of volume to improve diastolic ventricular interactions, improving contractility by use of inotropes, and reducing afterload by use of drugs targeting pulmonary circulation. The medical therapies approved for PAH act primarily on the pulmonary vasculature with secondary effects on the right ventricle. Mechanical circulatory support as a bridge to transplantation has also gained traction in medically refractory cases. The current review was undertaken to summarize recent insights into the evaluation and treatment of RV dysfunction and failure attributable to PAH.
Collapse
Affiliation(s)
- Chakradhari Inampudi
- Division of Cardiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Ryan J. Tedford
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Anna R. Hemnes
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Georg Hansmann
- Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Hannover, Germany
| | - Harm-Jan Bogaard
- Department of Pulmonary Medicine, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Martin Koestenberger
- Division of Pediatric Cardiology, Department of Pediatrics, Medical University Graz, Graz, Austria
| | - Irene Marthe Lang
- Division of Cardiology, Department of Medicine, Medical University of Vienna, Vienna
| | - Evan L. Brittain
- Division of Cardiology, Department of Medicine, Vanderbilt University Medical Center and Vanderbilt Translational and Clinical Cardiovascular Research Center, Nashville, TN, USA
| |
Collapse
|
14
|
Alabed S, Shahin Y, Garg P, Alandejani F, Johns CS, Lewis RA, Condliffe R, Wild JM, Kiely DG, Swift AJ. Cardiac-MRI Predicts Clinical Worsening and Mortality in Pulmonary Arterial Hypertension: A Systematic Review and Meta-Analysis. JACC Cardiovasc Imaging 2020; 14:931-942. [PMID: 33008758 PMCID: PMC7525356 DOI: 10.1016/j.jcmg.2020.08.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 12/21/2022]
Abstract
Objectives This meta-analysis evaluates assessment of pulmonary arterial hypertension (PAH), with a focus on clinical worsening and mortality. Background Cardiac magnetic resonance (CMR) has prognostic value in the assessment of patients with PAH. However, there are limited data on the prediction of clinical worsening, an important composite endpoint used in PAH therapy trials. Methods The Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, and Web of Science databases were searched in May 2020. All CMR studies assessing clinical worsening and the prognosis of patients with PAH were included. Pooled hazard ratios of univariate regression analyses for CMR measurements, for prediction of clinical worsening and mortality, were calculated. Results Twenty-two studies with 1,938 participants were included in the meta-analysis. There were 18 clinical worsening events and 8 deaths per 100 patient-years. The pooled hazard ratios show that every 1% decrease in right ventricular (RV) ejection fraction is associated with a 4.9% increase in the risk of clinical worsening over 22 months of follow-up and a 2.1% increase in the risk of death over 54 months. For every 1 ml/m2 increase in RV end-systolic volume index or RV end-diastolic volume index, the risk of clinical worsening increases by 1.3% and 1%, respectively, and the risk of mortality increases by 0.9% and 0.6%. Every 1 ml/m2 decrease in left ventricular stroke volume index or left ventricular end-diastolic volume index increased the risk of death by 2.5% and 1.8%. Left ventricular parameters were not associated with clinical worsening. Conclusions This review confirms CMR as a powerful prognostic marker in PAH in a large cohort of patients. In addition to confirming previous observations that RV function and RV and left ventricular volumes predict mortality, RV function and volumes also predict clinical worsening. This study provides a strong rationale for considering CMR as a clinically relevant endpoint for trials of PAH therapies.
Collapse
Affiliation(s)
- Samer Alabed
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Department of Clinical Radiology, Sheffield Teaching Hospitals, Sheffield, United Kingdom.
| | - Yousef Shahin
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Department of Clinical Radiology, Sheffield Teaching Hospitals, Sheffield, United Kingdom
| | - Pankaj Garg
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Faisal Alandejani
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
| | - Christopher S Johns
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Department of Clinical Radiology, Sheffield Teaching Hospitals, Sheffield, United Kingdom
| | - Robert A Lewis
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - Robin Condliffe
- Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - James M Wild
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; INSIGNEO, Institute for In Silico Medicine, University of Sheffield, United Kingdom
| | - David G Kiely
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Sheffield Pulmonary Vascular Disease Unit, Royal Hallamshire Hospital, Sheffield, United Kingdom; INSIGNEO, Institute for In Silico Medicine, University of Sheffield, United Kingdom
| | - Andrew J Swift
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom; Department of Clinical Radiology, Sheffield Teaching Hospitals, Sheffield, United Kingdom; INSIGNEO, Institute for In Silico Medicine, University of Sheffield, United Kingdom
| |
Collapse
|
15
|
Dong Y, Pan Z, Wang D, Lv J, Fang J, Xu R, Ding J, Cui X, Xie X, Wang X, Chen, MD Y, Guo X. Prognostic Value of Cardiac Magnetic Resonance–Derived Right Ventricular Remodeling Parameters in Pulmonary Hypertension. Circ Cardiovasc Imaging 2020; 13:e010568. [DOI: 10.1161/circimaging.120.010568] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Background
Cardiac right ventricular remodeling plays a substantial role in pathogenesis, progression, and prognosis of pulmonary hypertension. Cardiac magnetic resonance is considered an excellent tool for evaluation of right ventricle. However, value of right ventricular remodeling parameters derived from cardiac magnetic resonance in predicting adverse events is controversial.
Methods
The Pubmed (MEDLINE), Embase, Cochrane Library, Web of Science, China National Knowledge Infrastructure platform (CNKI), China Science and Technology Journal Database (VIP), and Wanfang databases were systematically searched until November 2019. Studies reporting hazard ratios (HRs) for all-cause death and composite end point of pulmonary hypertension were included. Univariate HRs were extracted from the included studies to calculate pooled HRs of each right ventricular remodeling parameter.
Results
Eight studies with 1120 patients examining all-cause death (female: 44%–92%, age: 40–67 years old, follow-up time: 27–48 months) and 10 studies with 604 patients examining composite end point (female: 60%–83%, age: 29–57 years old, follow-up time: 10–68 months) met the criteria. Right ventricular ejection fraction was the only parameter which could predict both all-cause death (pooled HR=0.95;
P
=0.014) and composite end point (pooled HR=0.95;
P
<0.001), although right ventricular end-diastolic volume index (pooled HR=1.01;
P
<0.001), right ventricular end-systolic volume index (pooled HR=1.01,
P
=0.045), and right ventricular mass index (pooled HR=1.03,
P
=0.032) only predicted composite outcome. Similar results were observed when we conducted the meta-analysis among patients with World Health Organization type I of pulmonary hypertension.
Conclusions
Cardiac magnetic resonance–derived right ventricular remodeling parameters have independent prognostic value for all-cause death and composite end point of patients with pulmonary hypertension. Right ventricular ejection fraction was the strongest prognostic factor among all the right ventricular remodeling parameters. Right ventricular mass index, right ventricular end-diastolic volume index, and right ventricular end-systolic volume index also demonstrated prognostic value.
Collapse
Affiliation(s)
- Yang Dong
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Zhicheng Pan
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Dongfei Wang
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Jialan Lv
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Juan Fang
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Rui Xu
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Jie Ding
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Xiao Cui
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Xudong Xie
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Xingxiang Wang
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| | - Yucheng Chen, MD
- Department of Cardiology, West China Hospital, Sichuan University (Y.C.)
| | - Xiaogang Guo
- Department of Cardiology, The First Affiliated Hospital of Zhejiang University School of Medicine (Y.D., Z.P., D.W., J.L., J.F., R.X., J.D., X.C., X.X., X.W., X.G.)
| |
Collapse
|
16
|
Barison A, Aimo A, Todiere G, Grigoratos C, Aquaro GD, Emdin M. Cardiovascular magnetic resonance for the diagnosis and management of heart failure with preserved ejection fraction. Heart Fail Rev 2020; 27:191-205. [DOI: 10.1007/s10741-020-09998-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
17
|
Sadeghpour A, Hosseini L, Rezaeian N, Alizadehasl A, Maleki M, Emkanjoo Z, Bakhshandeh H, Zadehbagheri F. Presence and prognostic value of ventricular diastolic function in arrhythmogenic right ventricular cardiomyopathy. Echocardiography 2020; 37:1766-1773. [PMID: 32460435 DOI: 10.1111/echo.14716] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/05/2020] [Accepted: 05/05/2020] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION Limited data exist regarding the presence and importance of diastolic parameters in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). We sought to evaluate RV diastolic parameters and echo-based diastolic predictors of major adverse cardiovascular events (MACE). METHOD 48 patients with a definitive diagnosis of ARVC were included and followed for 6-18 months. A comprehensive standard two-dimensional (2D) transthoracic echocardiography (TTE) with precise evaluation of systolic and diastolic indices of both ventricles was done. RV isovolumetric relaxation time (IVRT), RV myocardial performance index (MPI), and right atrial (RA) volume were evaluated. RESULTS 48 patients (mean age = 38.5 ± 14 years; 79.2% male) were enrolled. 27.3% had grade I, 68.2% had grade II, and 4.5% had grade III RV diastolic dysfunction. In 12-month follow-up, 12 patients (25%, with mean RV3DEF = 24.8 ± 9%) experienced MACE and required hospitalization: ventricular tachyarrhythmia in 7 patients (14.6%), RV clot in 2 subjects (4.2%), and right-sided failure in 3 cases (6.3%). In logistic regression analysis, tissue Doppler velocity of tricuspid annulus (e' TV) (P = .02, OR = 0.581, CI = 0.368-0.917), peak E mitral valve (P = .043, OR = 0.95, CI = 0.913-0.999), tissue Doppler velocity of septal e' (P = .052, OR = 0.733, CI = 0.536-1.003), and MPI (P = .009, OR = 95, CI = 3.083-2942) were powerful predictors of MACE. CONCLUSION In our study, RV diastolic function parameters including e' TV and e' MV, RA volume and area, and RV MPI were powerful predictors of MACE and may be considered during the baseline and follow-up of the ARVC patients.
Collapse
Affiliation(s)
- Anita Sadeghpour
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Leila Hosseini
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.,Cardiology Department, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Nahid Rezaeian
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Azin Alizadehasl
- Echocardiography and Cardio-Oncology Research Centers, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Emkanjoo
- Electrophysiology Research Centers, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Hooman Bakhshandeh
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Zadehbagheri
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.,Cardiology Department, Yasuj University of Medical Sciences, Yasuj, Iran
| |
Collapse
|
18
|
Eroume-A Egom E, Kamgang R. Role of natriuretic peptide receptor C signalling in obesity-induced heart failure with preserved ejection fraction with pulmonary hypertension. Pulm Circ 2020; 10:2045894020910975. [PMID: 32166021 PMCID: PMC7052478 DOI: 10.1177/2045894020910975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 11/17/2022] Open
Affiliation(s)
- Emmanuel Eroume-A Egom
- Laboratory of Endocrinology and Radioisotopes, Institute of Medical Research and Medicinal Plants Studies (IMPM), Yaoundé, Cameroon.,Egom Clinical & Translational Research Services Ltd, Toronto, Canada
| | - Rene Kamgang
- Laboratory of Endocrinology and Radioisotopes, Institute of Medical Research and Medicinal Plants Studies (IMPM), Yaoundé, Cameroon
| |
Collapse
|
19
|
Frank BS, Schäfer M, Douwes JM, Ivy DD, Abman SH, Davidson JA, Burzlaff S, Mitchell MB, Morgan GJ, Browne LP, Barker AJ, Truong U, von Alvensleben JC. Novel measures of left ventricular electromechanical discoordination predict clinical outcomes in children with pulmonary arterial hypertension. Am J Physiol Heart Circ Physiol 2020; 318:H401-H412. [PMID: 31858817 PMCID: PMC7052618 DOI: 10.1152/ajpheart.00355.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 01/16/2023]
Abstract
Adverse ventricle-ventricle interaction and resultant left ventricular (LV) dysfunction are a recognized pathophysiological component of disease progression in pulmonary arterial hypertension (PAH) and can be associated with electrical and mechanical dyssynchrony. The purpose of this study was to investigate the clinical and mechanistic implications of LV electromechanical dyssynchrony in children with PAH by using novel systolic stretch and diastolic relaxation discoordination indexes derived noninvasively from cardiac MRI (CMR). In children with PAH referred for CMR (n = 64) and healthy controls (n = 20), we calculated two novel markers of ventricular discoordination, systolic stretch fraction (SSF) and diastolic relaxation fraction (DRF). SSF and DRF were evaluated with respect to 1) electrical dyssynchrony, 2) functional status, and 3) composite clinical outcomes. SSF was increased in patients with PAH compared with controls (P = 0.004). There was no difference in DRF between PAH and control groups. There were no differences between groups in standard mechanical dyssynchrony and LV global circumferential strain. Increased SSF was associated with greater electrical dyssynchrony (QRS duration) as well as worse WHO functional class. SSF, DRF, mechanical dyssynchrony, and right ventricular (RV) volumes were prognostic for worse clinical outcomes. LV dyssynchrony indexes are altered in pediatric patients with PAH compared with controls in proportion with greater degrees of RV dilation. Patients with PAH with greater dyssynchrony have worse clinical outcomes. RV-induced increased LV electromechanical dyssynchrony therefore may be an important link in the causal pathway from PAH to clinically significant LV dysfunction. Since dyssynchrony could precede overt LV dysfunction, addition of ventricular synchrony analysis to CMR postprocessing protocols may be of clinical benefit.NEW & NOTEWORTHY We demonstrate that left ventricular discoordination indexes are altered in pediatric patients with pulmonary arterial hypertension compared with controls and pediatric patients with pulmonary arterial hypertension with greater dyssynchrony have worse clinical outcomes. Furthermore, there is evidence for the mechanism of right ventricular-induced left ventricular discoordination to include a combination of delayed early systolic electromechanical activation, late-systolic septal shift, and prolonged, postsystolic septal thickening.
Collapse
Affiliation(s)
- Benjamin S Frank
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Michal Schäfer
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Johannes M Douwes
- Department of Pediatric Cardiology, Beatrix Children's Hospital, University Medical Centre Groningen, University of Groningen, The Netherlands
| | - D Dunbar Ivy
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
- Pediatric Heart Lung Center, Department of Pediatrics, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Steven H Abman
- Pediatric Heart Lung Center, Department of Pediatrics, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Jesse A Davidson
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Sandra Burzlaff
- Ludwig-Maxmilian Munich University, Faculty of Medicine, Munich, Germany
| | - Max B Mitchell
- Section of Congenital Heart Surgery, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Gareth J Morgan
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Lorna P Browne
- Department of Pediatric Radiology, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Alex J Barker
- Department of Pediatric Radiology, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Uyen Truong
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| | - Johannes C von Alvensleben
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado Denver | Anschutz Medical Campus, Aurora, Colorado
| |
Collapse
|
20
|
Berhane H, Ruh A, Husain N, Robinson JD, Rigsby CK, Markl M. Myocardial velocity, intra-, and interventricular dyssynchrony evaluated by tissue phase mapping in pediatric heart transplant recipients. J Magn Reson Imaging 2019; 51:1212-1222. [PMID: 31515865 DOI: 10.1002/jmri.26916] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/15/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Endomyocardial biopsy (EMB) is the standard method for detecting allograft rejection in pediatric heart transplants (Htx). As EMB is invasive and carries a risk of complications, there is a need for a noninvasive alternative for allograft monitoring. PURPOSE To quantify left and right ventricular (LV & RV) peak velocities, velocity twist, and intra-/interventricular dyssynchrony using tissue phase mapping (TPM) in pediatric Htx compared with controls, and to explore the relationship between global cardiac function parameters and the number of rejection episodes to these velocities and intra-/interventricular dyssynchrony. STUDY TYPE Prospective. SUBJECTS Twenty Htx patients (age: 16.0 ± 3.1 years, 11 males) and 18 age- and sex-matched controls (age: 15.5 ± 4.3 years, nine males). FIELD STRENGTH/SEQUENCE 5T; 2D balanced cine steady-state free-precession (bSSFP), TPM (2D cine phase contrast with three-directional velocity encoding). ASSESSMENT LV and RV circumferential, radial, and long-axis velocity-time curves, global and segmental peak velocities were measured using TPM. Short-axis bSSFP images were used to measure global LV and RV function parameters. STATISTICAL TESTS A normality test (Lilliefors test) was performed on all data. For comparisons, a t-test was used for normally distributed data or a Wilcoxon rank-sum test otherwise. Correlations were determined by a Pearson correlation. RESULTS Htx patients had significantly reduced LV (P < 0.05-0.001) and RV (P < 0.05-0.001) systolic and diastolic global and segmental long-axis velocities, reduced RV diastolic peak twist (P < 0.01), and presented with higher interventricular dyssynchrony for long-axis and circumferential motions (P < 0.05-0.001). LV diastolic long-axis dyssynchrony (r = 0.48, P = 0.03) and RV diastolic peak twist (r = -0.64, P = 0.004) significantly correlated with the total number of rejection episodes. DATA CONCLUSION TPM detected differences in biventricular myocardial velocities in pediatric Htx patients compared with controls and indicated a relationship between Htx myocardial velocities and rejection history. LEVEL OF EVIDENCE 2 Technical Efficacy Stage: 3 J. Magn. Reson. Imaging 2020;51:1212-1222.
Collapse
Affiliation(s)
- Haben Berhane
- Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Alexander Ruh
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Nazia Husain
- Department of Pediatrics, Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Joshua D Robinson
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Department of Pediatrics, Division of Pediatric Cardiology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Cynthia K Rigsby
- Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.,Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Michael Markl
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Chicago, Illinois, USA
| |
Collapse
|
21
|
Padervinskienė L, Krivickienė A, Hoppenot D, Miliauskas S, Basevičius A, Nedzelskienė I, Jankauskas A, Šimkus P, Ereminienė E. Prognostic Value of Left Ventricular Function and Mechanics in Pulmonary Hypertension: A Pilot Cardiovascular Magnetic Resonance Feature Tracking Study. ACTA ACUST UNITED AC 2019; 55:medicina55030073. [PMID: 30897834 PMCID: PMC6473343 DOI: 10.3390/medicina55030073] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/08/2019] [Accepted: 03/14/2019] [Indexed: 11/24/2022]
Abstract
Background and objective: Cardiovascular magnetic resonance (CMR) - based feature tracking (FT) can detect left ventricular (LV) strain abnormalities in pulmonary hypertension (PH) patients, but little is known about the prognostic value of LV function and mechanics in PH patients. The aim of this study was to evaluate LV systolic function by conventional CMR and LV global strains by CMR-based FT analysis in precapillary PH patients, thereby defining the prognostic value of LV function and mechanics. Methods: We prospectively enrolled 43 patients with precapillary PH (mean pulmonary artery pressure (mPAP) 55.91 ± 15.87 mmHg, pulmonary arterial wedge pressure (PAWP) ≤15 mmHg) referred to CMR for PH evaluation. Using FT software, the LV global longitudinal strain (GLS) and global circumferential strain (GCS), also right ventricular (RV) GLS were analyzed. Results: Patients were classified into two groups according to survival (survival/non-survival). LV GLS was significantly reduced in the non-survival group (−12.4% [−19.0–(−7.8)] vs. −18.4% [−22.5–(−15.5)], p = 0.009). By ROC curve analysis, LV GLS > −14.2% (CI: 3.229 to 37.301, p < 0.001) was found to be robust predictor of mortality in PH patients. Univariable analysis using the Cox model showed that severely reduced LV GLS > −14.2%, with good sensitivity (77.8%) and high specificity (93.5%) indicated an increase of the risk of death by 11-fold. LV GLS significantly correlated in PH patients with RV ESVI (r = 0.322, p = 0.035), RV EF (r = 0.444, p < 0.003). Conclusions: LV systolic function and LV global longitudinal strain measurements using CMR-FT correlates with RV dysfunction and is associated with poor clinical outcomes in precapillary PH patients.
Collapse
Affiliation(s)
- Lina Padervinskienė
- Department of Radiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Aušra Krivickienė
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Deimantė Hoppenot
- Department of Pulmonology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Skaidrius Miliauskas
- Department of Pulmonology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Algidas Basevičius
- Department of Radiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Irena Nedzelskienė
- Department of Dental and Oral Diseases, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Antanas Jankauskas
- Department of Radiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Paulius Šimkus
- Department of Radiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| | - Eglė Ereminienė
- Department of Cardiology, Medical Academy, Lithuanian University of Health Sciences, LT 44307 Kaunas, Lithuania.
| |
Collapse
|
22
|
Agrawal V, Byrd BF, Brittain EL. Echocardiographic evaluation of diastolic function in the setting of pulmonary hypertension. Pulm Circ 2019; 9:2045894019826043. [PMID: 30783522 PMCID: PMC6366003 DOI: 10.1177/2045894019826043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 12/14/2018] [Indexed: 11/30/2022] Open
Abstract
Heart failure due to diastolic dysfunction and pulmonary hypertension are frequent comorbid conditions with significant morbidity and mortality. Identifying the presence and etiology of diastolic dysfunction in the setting of pulmonary hypertension remains challenging despite profound therapeutic and prognostic implications. Additionally, there is little guidance in identifying and parsing etiology of diastolic dysfunction in patients found to have pulmonary hypertension. This review discusses the complex interplay between left ventricular diastolic dysfunction and pulmonary hypertension. With an explicit focus on the use of echocardiography for determination of diastolic dysfunction and etiology of pulmonary hypertension, this review also provides a comprehensive review of the literature and provides a framework by which to assess diastolic dysfunction echocardiographically in the setting of pulmonary hypertension.
Collapse
Affiliation(s)
- Vineet Agrawal
- Division of Cardiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Benjamin F Byrd
- Division of Cardiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Evan L Brittain
- Division of Cardiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| |
Collapse
|
23
|
Impact of age and cardiac disease on regional left and right ventricular myocardial motion in healthy controls and patients with repaired tetralogy of fallot. Int J Cardiovasc Imaging 2019; 35:1119-1132. [PMID: 30715669 DOI: 10.1007/s10554-019-01544-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 01/21/2019] [Indexed: 12/29/2022]
Abstract
The assessment of both left (LV) and right ventricular (RV) motion is important to understand the impact of heart disease on cardiac function. The MRI technique of tissue phase mapping (TPM) allows for the quantification of regional biventricular three-directional myocardial velocities. The goal of this study was to establish normal LV and RV velocity parameters across a wide range of pediatric to adult ages and to investigate the feasibility of TPM for detecting impaired regional biventricular function in patients with repaired tetralogy of Fallot (TOF). Thirty-six healthy controls (age = 1-75 years) and 12 TOF patients (age = 5-23 years) underwent cardiac MRI including TPM in short-axis locations (base, mid, apex). For ten adults, a second TPM scan was used to assess test-retest reproducibility. Data analysis included the calculation of biventricular radial, circumferential, and long-axis velocity components, quantification of systolic and diastolic peak velocities in an extended 16 + 10 LV + RV segment model, and assessment of inter-ventricular dyssynchrony. Biventricular velocities showed good test-retest reproducibility (mean bias ≤ 0.23 cm/s). Diastolic radial and long-axis peak velocities for LV and RV were significantly reduced in adults compared to children (19-61%, p < 0.001-0.02). In TOF patients, TPM identified significantly reduced systolic and diastolic LV and RV long-axis peak velocities (20-50%, p < 0.001-0.05) compared to age-matched controls. In conclusion, tissue phase mapping enables comprehensive analysis of global and regional biventricular myocardial motion. Changes in myocardial velocities associated with age underline the importance of age-matched controls. This pilot study in TOF patients shows the feasibility to detect regionally abnormal LV and RV motion.
Collapse
|
24
|
Hoeper MM, Benza RL, Corris P, de Perrot M, Fadel E, Keogh AM, Kühn C, Savale L, Klepetko W. Intensive care, right ventricular support and lung transplantation in patients with pulmonary hypertension. Eur Respir J 2019; 53:13993003.01906-2018. [PMID: 30545979 PMCID: PMC6351385 DOI: 10.1183/13993003.01906-2018] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 10/09/2018] [Indexed: 12/30/2022]
Abstract
Intensive care of patients with pulmonary hypertension (PH) and right-sided heart failure includes treatment of factors causing or contributing to heart failure, careful fluid management, and strategies to reduce ventricular afterload and improve cardiac function. Extracorporeal membrane oxygenation (ECMO) should be considered in distinct situations, especially in candidates for lung transplantation (bridge to transplant) or, occasionally, in patients with a reversible cause of right-sided heart failure (bridge to recovery). ECMO should not be used in patients with end-stage disease without a realistic chance for recovery or for transplantation. For patients with refractory disease, lung transplantation remains an important treatment option. Patients should be referred to a transplant centre when they remain in an intermediate- or high-risk category despite receiving optimised pulmonary arterial hypertension therapy. Meticulous peri-operative management including the intra-operative and post-operative use of ECMO effectively prevents graft failure. In experienced centres, the 1-year survival rates after lung transplantation for PH now exceed 90%.
Collapse
Affiliation(s)
- Marius M Hoeper
- Dept of Respiratory Medicine, Hannover Medical School and Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Raymond L Benza
- The Cardiovascular Institute, Allegheny General Hospital, Pittsburgh, PA, USA
| | - Paul Corris
- Institute of Cellular Medicine, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Marc de Perrot
- Division of Thoracic Surgery, Toronto General Hospital, University of Toronto, Toronto, ON, Canada
| | - Elie Fadel
- Dept of Thoracic and Vascular Surgery and Heart-Lung Transplantation, Hôpital Marie Lannelongue and Université Paris-Sud, Paris, France
| | - Anne M Keogh
- Heart Transplant Unit, St Vincent's Public Hospital, Darlinghurst, Australia.,University of New South Wales, Sydney, Australia
| | - Christian Kühn
- Dept of Cardiothoracic, Vascular and Transplantation Surgery, Hannover Medical School and Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Laurent Savale
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de Pneumologie, Département Hospitalo-Universitaire (DHU) Thorax Innovation (TORINO), Hôpital Bicêtre, Le Kremlin-Bicêtre, France.,INSERM UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Walter Klepetko
- Dept of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
25
|
Egom EE, Maher V, El Hiani Y. Evolving use of natriuretic peptide receptor type-C as part of strategies for the treatment of pulmonary hypertension due to left ventricle heart failure. Int J Cardiol 2018; 281:172-178. [PMID: 29885823 DOI: 10.1016/j.ijcard.2018.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/27/2018] [Accepted: 06/01/2018] [Indexed: 12/27/2022]
Abstract
Pulmonary hypertension (PH) due to left ventricular heart failure (LV-HF) is a disabling and life-threatening disease for which there is currently no single marketed pharmacological agent approved. Despite recent advances in the pathophysiological understanding, there is as yet no prospect of cure, and the majority of patients continue to progress to right ventricular failure and die. There is, therefore an urgent unmet need to identify novel pharmacological agents that will prevent or reverse the increase in pulmonary artery pressures while enhancing cardiac performance in PH due to LV-HF. In the present article, we first focused on the Natriuretic Peptide Receptor type C (NPR-C) based therapeutic strategies aimed at lowering pulmonary artery pressure. Second, we reviewed potential NPR-C therapeutic strategies to reverse or least halt the detrimental effects of diastolic dysfunction and impaired nitic oxide signalling pathways, as well as possibilities for neurohumoral modulation.
Collapse
Affiliation(s)
- Emmanuel E Egom
- St. Martha's Regional Hospital, Antigonish, Nova Scotia, Canada.
| | - Vincent Maher
- Cardiology Department, The Adelaide and Meath Hospital, Tallaght, Dublin, Ireland
| | - Yassine El Hiani
- Department of Physiology and Biophysics, Dalhousie University, Halifax, NS, Canada
| |
Collapse
|
26
|
Cheang MH, Barber NJ, Khushnood A, Hauser JA, Kowalik GT, Steeden JA, Quail MA, Tullus K, Hothi D, Muthurangu V. A comprehensive characterization of myocardial and vascular phenotype in pediatric chronic kidney disease using cardiovascular magnetic resonance imaging. J Cardiovasc Magn Reson 2018; 20:24. [PMID: 29609642 PMCID: PMC5880006 DOI: 10.1186/s12968-018-0444-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 03/08/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Children with chronic kidney disease (CKD) have increased cardiovascular mortality. Identifying high-risk children who may benefit from further therapeutic intervention is difficult as cardiovascular abnormalities are subtle. Although transthoracic echocardiography may be used to detect sub-clinical abnormalities, it has well-known problems with reproducibility that limit its ability to accurately detect these changes. Cardiovascular magnetic resonance (CMR) is the reference standard method for assessing blood flow, cardiac structure and function. Furthermore, recent innovations enable the assessment of radial and longitudinal myocardial velocity, such that detection of sub-clinical changes is now possible. Thus, CMR may be ideal for cardiovascular assessment in pediatric CKD. This study aims to comprehensively assess cardiovascular function in pediatric CKD using CMR and determine its relationship with CKD severity. METHODS A total of 120 children (40 mild, 40 moderate, 20 severe pre-dialysis CKD subjects and 20 healthy controls) underwent CMR with non-invasive blood pressure (BP) measurements. Cardiovascular parameters measured included systemic vascular resistance (SVR), total arterial compliance (TAC), left ventricular (LV) structure, ejection fraction (EF), cardiac timings, radial and longitudinal systolic and diastolic myocardial velocities. Between group comparisons and regression modelling were used to identify abnormalities in CKD and determine the effects of renal severity on myocardial function. RESULTS The elevation in mean BP in CKD was accompanied by significantly increased afterload (SVR), without evidence of arterial stiffness (TAC) or increased fluid overload. Left ventricular volumes and global function were not abnormal in CKD. However, there was evidence of LV remodelling, prolongation of isovolumic relaxation time and reduced systolic and diastolic myocardial velocities. CONCLUSION Abnormal cardiovascular function is evident in pre-dialysis pediatric CKD. Novel CMR biomarkers may be useful for the detection of subtle abnormalities in this population. Further studies are needed to determine to prognostic value of these biomarkers.
Collapse
Affiliation(s)
- Mun Hong Cheang
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| | - Nathaniel J. Barber
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| | - Abbas Khushnood
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| | - Jakob A. Hauser
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| | - Gregorz T. Kowalik
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
| | - Jennifer A. Steeden
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
| | - Michael A. Quail
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| | | | | | - Vivek Muthurangu
- Centre for Cardiovascular Imaging, UCL Institute of Cardiovascular Science, 30 Guilford Street, London, WC1N 1EH UK
- Great Ormond Street Hospital, London, UK
| |
Collapse
|
27
|
Schäfer M, Collins KK, Browne LP, Ivy DD, Abman S, Friesen R, Frank B, Fonseca B, DiMaria M, Hunter KS, Truong U, von Alvensleben JC. Effect of electrical dyssynchrony on left and right ventricular mechanics in children with pulmonary arterial hypertension. J Heart Lung Transplant 2018; 37:870-878. [PMID: 29496397 DOI: 10.1016/j.healun.2018.01.1308] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 12/12/2017] [Accepted: 01/31/2018] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Electrical and right ventricular (RV) mechanical dyssynchrony has been previously described in pediatric pulmonary arterial hypertension (PAH), but less is known about the relationship between electrical dyssynchrony and biventricular function. In this study we applied cardiac magnetic resonance (CMR) imaging to evaluate biventricular size and function with a focus on left ventricular (LV) strain mechanics in pediatric PAH patients with and without electrical dyssynchrony. METHODS Fifty-six children with PAH and comprehensive CMR evaluation were stratified based on QRS duration z-score, with electrical dyssynchrony defined as z-score ≥2. Comprehensive biventricular volumetric, dyssynchrony, and strain analysis was performed. RESULTS Nineteen PAH patients had or developed electrical dyssynchrony. Patients with electrical dyssynchrony had significantly reduced RV ejection fraction (35% vs 50%, p = 0.003) and greater end-diastolic (168 vs 112 ml/m2, p = 0.041) and end-systolic (119 vs 57, ml/m2, p = 0.026) volumes. Patients with electrical dyssynchrony had reduced RV longitudinal strain (-14% vs -19%, p = 0.007), LV circumferential strain measured at the free wall (-19% vs -22%, p = 0.047), and the LV longitudinal strain in the septal region (-10% vs -15%, p = 0.0268). LV mechanical intraventricular dyssynchrony was reduced in patients with electrical dyssynchrony at the LV free wall (43 vs 19 ms, p = 0.019). CONCLUSIONS The electrical dyssynchrony is associated with the reduced LV strain, enlarged RV volumes, and reduced biventricular function in children with PAH. CMR assessment of biventricular mechanical function with respect to QRS duration may help to detect pathophysiologic processes associated with progressed PAH.
Collapse
Affiliation(s)
- Michal Schäfer
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado.
| | - Kathryn K Collins
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Lorna P Browne
- Department of Radiology, Breathing Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - D Dunbar Ivy
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Steven Abman
- Division of Pulmonology, Breathing Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Richard Friesen
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Benjamin Frank
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Brian Fonseca
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Michael DiMaria
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Kendall S Hunter
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Uyen Truong
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| | - Johannes C von Alvensleben
- Division of Cardiology, Heart Institute, Children's Hospital Colorado, Anschutz Medical Campus, University of Colorado Denver, Aurora, Colorado
| |
Collapse
|
28
|
Manning WJ. Review of Journal of Cardiovascular Magnetic Resonance (JCMR) 2015-2016 and transition of the JCMR office to Boston. J Cardiovasc Magn Reson 2017; 19:108. [PMID: 29284487 PMCID: PMC5747150 DOI: 10.1186/s12968-017-0423-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 12/07/2017] [Indexed: 02/06/2023] Open
Abstract
The Journal of Cardiovascular Magnetic Resonance (JCMR) is the official publication of the Society for Cardiovascular Magnetic Resonance (SCMR). In 2016, the JCMR published 93 manuscripts, including 80 research papers, 6 reviews, 5 technical notes, 1 protocol, and 1 case report. The number of manuscripts published was similar to 2015 though with a 12% increase in manuscript submissions to an all-time high of 369. This reflects a decrease in the overall acceptance rate to <25% (excluding solicited reviews). The quality of submissions to JCMR continues to be high. The 2016 JCMR Impact Factor (which is published in June 2016 by Thomson Reuters) was steady at 5.601 (vs. 5.71 for 2015; as published in June 2016), which is the second highest impact factor ever recorded for JCMR. The 2016 impact factor means that the JCMR papers that were published in 2014 and 2015 were on-average cited 5.71 times in 2016.In accordance with Open-Access publishing of Biomed Central, the JCMR articles are published on-line in the order that they are accepted with no collating of the articles into sections or special thematic issues. For this reason, over the years, the Editors have felt that it is useful to annually summarize the publications into broad areas of interest or themes, so that readers can view areas of interest in a single article in relation to each other and other recent JCMR articles. The papers are presented in broad themes with previously published JCMR papers to guide continuity of thought in the journal. In addition, I have elected to open this publication with information for the readership regarding the transition of the JCMR editorial office to the Beth Israel Deaconess Medical Center, Boston and the editorial process.Though there is an author publication charge (APC) associated with open-access to cover the publisher's expenses, this format provides a much wider distribution/availability of the author's work and greater manuscript citation. For SCMR members, there is a substantial discount in the APC. I hope that you will continue to send your high quality manuscripts to JCMR for consideration. Importantly, I also ask that you consider referencing recent JCMR publications in your submissions to the JCMR and elsewhere as these contribute to our impact factor. I also thank our dedicated Associate Editors, Guest Editors, and reviewers for their many efforts to ensure that the review process occurs in a timely and responsible manner and that the JCMR continues to be recognized as the leading publication in our field.
Collapse
Affiliation(s)
- Warren J Manning
- From the Journal of Cardiovascular Magnetic Resonance Editorial Office and the Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
29
|
Göransson C, Vejlstrup N, Carlsen J. Reproducibility of peak filling and peak emptying rate determined by cardiovascular magnetic resonance imaging for assessment of biventricular systolic and diastolic dysfunction in patients with pulmonary arterial hypertension. Int J Cardiovasc Imaging 2017; 34:777-786. [PMID: 29168055 DOI: 10.1007/s10554-017-1281-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/17/2017] [Indexed: 11/24/2022]
Abstract
Right ventricular (RV) and left ventricular (LV) diastolic stiffness may be independent contributors to disease progression in pulmonary arterial hypertension (PAH). The aims of this study are to assess reproducibility of peak emptying rate (PER) and early diastolic peak filling rate (PFR) for both the RV and the LV in PAH and study their relationship to stroke volume (SV). Triple weekly repetition of 20 (totalling 60) cardiovascular magnetic resonance (CMR) scans, were done on 10 patients with PAH and 10 healthy controls. RV and LV volumes were measured over the full cardiac cycle. PER and PFR were calculated as the first derivative of the time-volume relationship in both the RV and the LV and indexed to body surface area. Reproducibility and the relation to SV were studied in a mixed model. PFR was lower in PAH in both the RV (PAH = 170 mL/m2/s, controls = 236 mL/m2/s [p < 0.01]) and in the LV (PAH = 209 mL/m2/s, controls = 311 mL/m2/s [p < 0.01]). PERs were not significantly different between patients and controls. Reproducibility of PER and PFR was high. A trial targeting normalization of PFR requires a total sample size of < 20. PER and PFR in both ventricles were strongly associated with stroke volume (all four: p < 0.01). Biventricular diastolic dysfunctions are strongly associated with stroke volume, and CMR can quantify them with high reproducibility, enabling small sample sizes for trials of therapies targeting diastolic dysfunction to increase survival.
Collapse
Affiliation(s)
- Christoffer Göransson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, 9-Blegdamsvej, 2100, Copenhagen, Denmark
| | - Niels Vejlstrup
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, 9-Blegdamsvej, 2100, Copenhagen, Denmark
| | - Jørn Carlsen
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, 9-Blegdamsvej, 2100, Copenhagen, Denmark. .,Department of Cardiology, 2141, Copenhagen University Hospital, Rigshospitalet, 9-Blegdamsvej, 2100, Copenhagen, Denmark.
| |
Collapse
|
30
|
Burkett DA, Slorach C, Patel SS, Redington AN, Ivy DD, Mertens L, Younoszai AK, Friedberg MK. Impact of Pulmonary Hemodynamics and Ventricular Interdependence on Left Ventricular Diastolic Function in Children With Pulmonary Hypertension. Circ Cardiovasc Imaging 2017; 9:CIRCIMAGING.116.004612. [PMID: 27581953 DOI: 10.1161/circimaging.116.004612] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 08/08/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Through ventricular interdependence, pulmonary hypertension (PH) induces left ventricular (LV) dysfunction. We hypothesized that pediatric PH patients have LV diastolic dysfunction, related to adverse pulmonary hemodynamics, leftward septal shift, and prolonged right ventricular systole. METHODS AND RESULTS Echocardiography was prospectively performed at 2 institutions in 54 pediatric PH patients during cardiac catheterization and in 54 matched controls. Diastolic LV measures including myocardial deformation were assessed by echocardiography. PH patients had evidence of LV diastolic dysfunction, most consistent with impaired LV relaxation, though some features of reduced ventricular compliance were present. PH patients demonstrated the following: reduced mitral E velocity and inflow duration, mitral E' and E'/A', septal E' and A', pulmonary vein S and D wave velocities, and LV basal global early diastolic circumferential strain rate and increased mitral E deceleration time, LV isovolumic relaxation time, mitral E/E', and pulmonary vein A wave duration. PH patients demonstrated leftward septal shift and prolonged right ventricular systole, both known to affect LV diastole. These changes were exacerbated in severe PH. There were no statistically significant differences in diastolic measures between patients with and without a shunt and minimal differences between patients with and without congenital heart disease. Multiple echocardiographic LV diastolic parameters demonstrated weak-to-moderate correlations with invasively determined PH severity, leftward septal shift, and prolonged right ventricular systole. CONCLUSIONS Pediatric PH patients exhibit LV diastolic dysfunction most consistent with impaired relaxation and reduced myocardial deformation, related to invasive hemodynamics, leftward septal shift, and prolonged right ventricular systole.
Collapse
Affiliation(s)
- Dale A Burkett
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.).
| | - Cameron Slorach
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - Sonali S Patel
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - Andrew N Redington
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - D Dunbar Ivy
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - Luc Mertens
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - Adel K Younoszai
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| | - Mark K Friedberg
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado, University of Colorado, Aurora (D.A.B., S.S.P., D.D.I., A.K.Y.); and Division of Cardiology, The Labatt Family Heart Center, Hospital for Sick Children, University of Toronto, Ontario, Canada (C.S., A.N.R., L.M., M.K.F.)
| |
Collapse
|
31
|
Hernandez-Suarez DF, Lopez Menendez FR, Palm D, Lopez-Candales A. Left Ventricular Diastolic Function Assessment of a Heterogeneous Cohort of Pulmonary Arterial Hypertension Patients. J Clin Med Res 2017; 9:353-359. [PMID: 28270896 PMCID: PMC5330779 DOI: 10.14740/jocmr2925w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Pulmonary arterial hypertension (PAH) is known to trigger right ventricular (RV) remodeling that might compromise left ventricular (LV) filling due to inter-ventricular interdependence. In this study, we aimed to examine standard echocardiographic measurements of LV diastolic function in PAH patients. METHODS In this retrospective study, we identified clinical as well as complete echocardiographic data from 128 chronic PAH patients to fully assess LV diastolic dysfunction (LVDD) using standard recommended Doppler guidelines. Accordingly, patients were divided into three groups: LVDD 0, LVDD 1 and LVDD 2. RESULTS The mean age of the studied population was 57 ± 14 years with a mean pulmonary artery systolic pressure (PASP) of 55 ± 21 mm Hg. A total of 36% of the study patients had normal LV diastolic function. However, 64% had LVDD with LVDD stage 1 being the most common (48%). In terms of echocardiographic data, significant differences were found among the three LVDD groups in regards to PASP, LV end systolic and diastolic volumes, tricuspid annular plane systolic excursion, right ventricular fractional area change as well as many other tissue Doppler imaging parameters. Finally, just age and PASP were predictors of abnormal LV diastolic function (P < 0.05). CONCLUSIONS Impaired relaxation is a common abnormality in PAH patients. Additional studies are warranted to determine whether LVDD alters prognosis or is related to changes in the symptomatic profile of this group of patients.
Collapse
Affiliation(s)
| | - Francisco R Lopez Menendez
- Division of Cardiovascular Health and Diseases, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Denada Palm
- Division of Cardiovascular Health and Diseases, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Angel Lopez-Candales
- Cardiovascular Medicine Division, University of Puerto Rico School of Medicine, San Juan, Puerto Rico
| |
Collapse
|
32
|
Quail MA, Muthurangu V. An Unwelcome Embrace: Adverse Pulmonary-Aortic Interactions in Pulmonary Hypertension. Circ Cardiovasc Imaging 2017; 10:CIRCIMAGING.117.006063. [PMID: 28193614 DOI: 10.1161/circimaging.117.006063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Michael A Quail
- From the Centre for Cardiovascular Imaging, Institute of Cardiovascular Science, University College London, United Kingdom, and National Paediatric Pulmonary Hypertension Centre, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Vivek Muthurangu
- From the Centre for Cardiovascular Imaging, Institute of Cardiovascular Science, University College London, United Kingdom, and National Paediatric Pulmonary Hypertension Centre, Great Ormond Street Hospital for Children, London, United Kingdom.
| |
Collapse
|
33
|
Schäfer M, Ivy DD, Abman SH, Barker AJ, Browne LP, Fonseca B, Kheyfets V, Hunter KS, Truong U. Apparent Aortic Stiffness in Children With Pulmonary Arterial Hypertension: Existence of Vascular Interdependency? Circ Cardiovasc Imaging 2017; 10:e005817. [PMID: 28193613 PMCID: PMC5314208 DOI: 10.1161/circimaging.116.005817] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/15/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Left ventricular dysfunction, mediated by ventricular interdependence, has been associated with negative outcomes in children with pulmonary arterial hypertension (PAH). Considering the dilation of the pulmonary arteries as a paramount sign of PAH, we hypothesized that the ascending aorta will present signs of apparent stiffness in children with PAH and that this effect may be because of mechanical interaction with the dilated main pulmonary artery (MPA). METHODS AND RESULTS Forty-two children with PAH and 26 age- and size-matched controls underwent comprehensive cardiac magnetic resonance evaluation. Assessment of aortic stiffness was evaluated by measuring pulse wave velocity, aortic strain, and distensibility. Children with PAH had significantly increased pulse wave velocity in the ascending aorta (3.4 versus 2.3 m/s for PAH and controls, respectively; P=0.001) and reduced aortic strain (23% versus 29%; P<0.0001) and distensibility (0.47 versus 0.64%/mm Hg; P=0.02). Indexed MPA diameter correlated with pulse wave velocity (P=0.04) and with aortic strain (P=0.02). The ratio of MPA to aortic size correlated with pulse wave velocity (P=0.0098), strain (P=0.0099), and distensibility (P=0.015). Furthermore, aortic relative area change was associated with left ventricular ejection fraction (P=0.045) and ventricular-vascular coupling ratio (P=0.042). CONCLUSIONS Pediatric PAH patients have increased apparent ascending aortic stiffness, which was strongly associated with the degree of MPA distension. We speculate that distension of the MPA may play a major role in limiting full aortic expansion during systole, which modulates left ventricular performance and impacts systemic hemodynamics in pediatric PAH.
Collapse
Affiliation(s)
- Michal Schäfer
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.).
| | - D Dunbar Ivy
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Steven H Abman
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Alex J Barker
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Lorna P Browne
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Brian Fonseca
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Vitaly Kheyfets
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Kendall S Hunter
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| | - Uyen Truong
- From the Division of Cardiology, Heart Institute, Children's Hospital Colorado (M.S., D.D.I., B.F., K.S.H., U.T.), Department of Bioengineering, College of Engineering and Applied Sciences (M.S., D.D.I., V.K., K.S.H., U.T.), Division of Pulmonology, Breathing Institute, Children's Hospital Colorado (S.H.A.), and Department of Radiology, Children's Hospital Colorado (L.P.B.), University of Colorado Denver/Anschutz Medical Campus; and Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL (A.J.B.)
| |
Collapse
|
34
|
Pennell DJ, Baksi AJ, Prasad SK, Mohiaddin RH, Alpendurada F, Babu-Narayan SV, Schneider JE, Firmin DN. Review of Journal of Cardiovascular Magnetic Resonance 2015. J Cardiovasc Magn Reson 2016; 18:86. [PMID: 27846914 PMCID: PMC5111217 DOI: 10.1186/s12968-016-0305-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 12/14/2022] Open
Abstract
There were 116 articles published in the Journal of Cardiovascular Magnetic Resonance (JCMR) in 2015, which is a 14 % increase on the 102 articles published in 2014. The quality of the submissions continues to increase. The 2015 JCMR Impact Factor (which is published in June 2016) rose to 5.75 from 4.72 for 2014 (as published in June 2015), which is the highest impact factor ever recorded for JCMR. The 2015 impact factor means that the JCMR papers that were published in 2013 and 2014 were cited on average 5.75 times in 2015. The impact factor undergoes natural variation according to citation rates of papers in the 2 years following publication, and is significantly influenced by highly cited papers such as official reports. However, the progress of the journal's impact over the last 5 years has been impressive. Our acceptance rate is <25 % and has been falling because the number of articles being submitted has been increasing. In accordance with Open-Access publishing, the JCMR articles go on-line as they are accepted with no collating of the articles into sections or special thematic issues. For this reason, the Editors have felt that it is useful once per calendar year to summarize the papers for the readership into broad areas of interest or theme, so that areas of interest can be reviewed in a single article in relation to each other and other recent JCMR articles. The papers are presented in broad themes and set in context with related literature and previously published JCMR papers to guide continuity of thought in the journal. We hope that you find the open-access system increases wider reading and citation of your papers, and that you will continue to send your quality papers to JCMR for publication.
Collapse
Affiliation(s)
- D. J. Pennell
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - A. J. Baksi
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - S. K. Prasad
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - R. H. Mohiaddin
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - F. Alpendurada
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - S. V. Babu-Narayan
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - J. E. Schneider
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| | - D. N. Firmin
- Cardiovascular Magnetic Resonance Unit, Royal Brompton & Harefield NHS Foundation Trust, Sydney Street, London, SW 3 6NP UK
| |
Collapse
|
35
|
Relevance of mouse models of cardiac fibrosis and hypertrophy in cardiac research. Mol Cell Biochem 2016; 424:123-145. [PMID: 27766529 DOI: 10.1007/s11010-016-2849-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 10/14/2016] [Indexed: 01/15/2023]
Abstract
Heart disease causing cardiac cell death due to ischemia-reperfusion injury is a major cause of morbidity and mortality in the United States. Coronary heart disease and cardiomyopathies are the major cause for congestive heart failure, and thrombosis of the coronary arteries is the most common cause of myocardial infarction. Cardiac injury is followed by post-injury cardiac remodeling or fibrosis. Cardiac fibrosis is characterized by net accumulation of extracellular matrix proteins in the cardiac interstitium and results in both systolic and diastolic dysfunctions. It has been suggested by both experimental and clinical evidence that fibrotic changes in the heart are reversible. Hence, it is vital to understand the mechanism involved in the initiation, progression, and resolution of cardiac fibrosis to design anti-fibrotic treatment modalities. Animal models are of great importance for cardiovascular research studies. With the developing research field, the choice of selecting an animal model for the proposed research study is crucial for its outcome and translational purpose. Compared to large animal models for cardiac research, the mouse model is preferred by many investigators because of genetic manipulations and easier handling. This critical review is focused to provide insight to young researchers about the various mouse models, advantages and disadvantages, and their use in research pertaining to cardiac fibrosis and hypertrophy.
Collapse
|
36
|
The Role of Cardiac Magnetic Resonance Imaging in Pulmonary Hypertension. CURRENT CARDIOVASCULAR IMAGING REPORTS 2016. [DOI: 10.1007/s12410-016-9380-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
37
|
Kowalik GT, Muthurangu V, Khushnood A, Steeden JA. Rapid breath-hold assessment of myocardial velocities using spiral UNFOLD-ed SENSE tissue phase mapping. J Magn Reson Imaging 2016; 44:1003-9. [PMID: 26929195 DOI: 10.1002/jmri.25218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 02/16/2016] [Indexed: 11/10/2022] Open
Abstract
PURPOSE To develop and validate a rapid breath-hold tissue phase mapping (TPM) sequence. MATERIALS AND METHODS The sequence was based on an efficient uniform density spiral acquisition, combined with data acceleration. A novel acquisition and reconstruction strategy enabled combination of UNFOLD (2×) and SENSE (3×): UNFOLD-ed SENSE. The sequence was retrospectively cardiac-gated, and a graphics processing unit (GPU) was used for rapid "online" reconstruction. The optimal UNFOLD parameters for the data were calculated using an in silico model. The technique was validated on a 1.5T MR scanner in 15 patients with known aortic valve disease, against a respiratory self-navigated free-breathing TPM technique. Quantitative image quality measures (velocity-to-noise and edge sharpness) were made as well as calculation of longitudinal, radial, and tangential myocardial velocities in the left ventricle. RESULTS The proposed breath-hold TPM data took eight heartbeats to acquire. The breath-hold TPM images had significantly higher edge sharpness (P = 0.0014) than the self-navigated TPM images, but with significantly lower velocity-to-noise ratio (P < 0.0001). There was excellent agreement (r > 0.94) in the longitudinal, radial, and tangential velocities between the self-navigated data and the proposed breath-hold TPM sequence. CONCLUSION We demonstrate the feasibility of using spiral UNFOLD-ed SENSE to measure myocardial velocities using a rapid breath-hold spiral TPM sequence. This novel technique might enable accurate measurement of myocardial velocities, in a short scan time, which is especially important in a busy clinical workflow. J. MAGN. RESON. IMAGING 2016;44:1003-1009.
Collapse
Affiliation(s)
- Grzegorz T Kowalik
- UCL Centre for Cardiovascular Imaging, University College London, London, UK
| | - Vivek Muthurangu
- UCL Centre for Cardiovascular Imaging, University College London, London, UK.
| | - Abbas Khushnood
- UCL Centre for Cardiovascular Imaging, University College London, London, UK
| | - Jennifer A Steeden
- UCL Centre for Cardiovascular Imaging, University College London, London, UK
| |
Collapse
|