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Stacey RB, Vera T, Morgan TM, Jordan JH, Whitlock MC, Hall ME, Vasu S, Hamilton C, Kitzman DW, Hundley WG. Asymptomatic myocardial ischemia forecasts adverse events in cardiovascular magnetic resonance dobutamine stress testing of high-risk middle-aged and elderly individuals. J Cardiovasc Magn Reson 2018; 20:75. [PMID: 30463565 PMCID: PMC6249873 DOI: 10.1186/s12968-018-0492-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 10/09/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Current guidelines for assessing the risk of experiencing a hospitalized cardiovascular (CV) event discourage stress testing of asymptomatic individuals; however, these recommendations are based on evidence gathered primarily from those aged < 60 years, and do not address the possibility of unrecognized "silent myocardial ischemia" in middle aged and older adults. METHODS We performed dobutamine cardiovascular magnetic resonance (CMR) stress testing in 327 consecutively recruited participants aged > 55 years without CV-related symptoms nor known coronary artery disease, but otherwise at increased risk for a future CV event due to pre-existing hypertension or diabetes mellitus for at least 5 years. After adjusting for the demographics and CV risk factors, log-rank test and Cox proportional hazards models determined the additional predictive value of the stress test results for forecasting hospitalized CV events/survival. Either stress-induced LV wall motion abnormalities or perfusion defects were used to indicate myocardial ischemia. RESULTS Participants averaged 68 ± 8 years in age; 39% men, 75% Caucasian. There were 38 hospitalized CV events or deaths which occurred during a mean follow-up of 58 months. Using Kaplan-Meier analyses, myocardial ischemia identified future CV events/survival (p < 0.001), but this finding was more evident in men (p < 0.001) versus women (p = 0.27). The crude hazard ratio (HR) of myocardial ischemia for CV events/survival was 3.13 (95% CI: 1.64-5.93; p < 0.001). After accounting for baseline demographics, CV risk factors, and left ventricular ejection fraction/mass, myocardial ischemia continued to be associated with CV events/survival [HR: 4.07 (95% CI: 1.95-8.73) p < 0.001]. CONCLUSIONS Among asymptomatic middle-aged individuals with risk factors for a sentinel CV event, the presence of myocardial ischemia during dobutamine CMR testing forecasted a future hospitalized CV event or death. Further studies are needed in middle aged and older individuals to more accurately characterize the prevalence, significance, and management of asymptomatic myocardial ischemia. TRIAL REGISTRATION ( ClinicalTrials.gov identifier): NCT00542503 and was retrospectively registered on October 11th, 2007.
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Affiliation(s)
- R. Brandon Stacey
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
| | - Trinity Vera
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
| | - Timothy M. Morgan
- Department of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Jennifer H. Jordan
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
| | - Matthew C. Whitlock
- Department of Medicine (Cardiovascular Medicine), Stanford University School of Medicine, Palo Alto, CA USA
| | - Michael E. Hall
- Department of Medicine (Cardiovascular Medicine), University of Mississippi Medical Center, Jackson, MS USA
| | - Sujethra Vasu
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
| | - Craig Hamilton
- Department of Radiology (Division of Radiologic Sciences), Wake Forest School of Medicine, Winston-Salem, NC USA
| | - Dalane W. Kitzman
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
| | - W. Gregory Hundley
- Department of Internal Medicine, Cardiovascular Medicine Section, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1045 USA
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Hall ME, Brinkley TE, Chughtai H, Morgan TM, Hamilton CA, Jordan JH, Stacey RB, Soots S, Hundley WG. Adiposity Is Associated with Gender-Specific Reductions in Left Ventricular Myocardial Perfusion during Dobutamine Stress. PLoS One 2016; 11:e0146519. [PMID: 26751789 PMCID: PMC4709095 DOI: 10.1371/journal.pone.0146519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/18/2015] [Indexed: 01/27/2023] Open
Abstract
Background Obesity and visceral adiposity are increasingly recognized risk factors for cardiovascular disease. Visceral fat may reduce myocardial perfusion by impairing vascular endothelial function. Women experience more anginal symptoms compared to men despite less severe coronary artery stenosis, as assessed by angiography. Women and men have different fat storage patterns which may account for the observed differences in cardiovascular disease. Therefore, our objective was to evaluate the relationship between visceral adipose tissue distributions and myocardial perfusion in men and women. Methods Visceral and subcutaneous fat distributions and myocardial perfusion were measured in 69 men and women without coronary artery disease using magnetic resonance imaging techniques. Myocardial perfusion index was quantified after first-pass perfusion with gadolinium contrast at peak dose dobutamine stress. Results We observed inverse relationships between female gender (r = -0.35, p = 0.003), pericardial fat (r = -0.36, p = 0.03), intraperitoneal fat (r = -0.37, p = 0.001), and retroperitoneal fat (r = -0.36, p = 0.002) and myocardial perfusion index. Visceral fat depots were not associated with reduced myocardial perfusion at peak dose dobutamine in men. However, in women, BMI (r = -0.33, p = 0.04), pericardial fat (r = -0.53, p = 0.02), subcutaneous fat (r = -0.39, p = 0.01) and intraperitoneal fat (r = -0.30, p = 0.05) were associated with reduced myocardial perfusion during dobutamine stress. Conclusions Higher visceral fat volumes are associated with reduced left ventricular myocardial perfusion at peak dose dobutamine stress in women but not in men. These findings suggest that visceral fat may contribute to abnormal microcirculatory coronary artery perfusion syndromes, explaining why some women exhibit more anginal symptoms despite typically lower grade epicardial coronary artery stenoses than men.
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Affiliation(s)
- Michael E. Hall
- Department of Medicine, Division of Cardiology, University of Mississippi Medical Center, Jackson, Mississippi, United States of America
- * E-mail:
| | - Tina E. Brinkley
- Department of Medicine, Section on Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Haroon Chughtai
- Division of Cardiology, Beloit Memorial Hospital, Beloit, Wisconsin, United States of America
| | - Timothy M. Morgan
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Craig A. Hamilton
- Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Jennifer H. Jordan
- Department of Medicine, Section on Cardiovascular Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - R. Brandon Stacey
- Department of Medicine, Section on Cardiovascular Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Sandra Soots
- Department of Medicine, Section on Cardiovascular Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - W. Gregory Hundley
- Department of Medicine, Section on Cardiovascular Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
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Vasu S, Little WC, Morgan TM, Stacey RB, Ntim WO, Hamilton C, Thohan V, Chiles C, Hundley WG. Mechanism of decreased sensitivity of dobutamine associated left ventricular wall motion analyses for appreciating inducible ischemia in older adults. J Cardiovasc Magn Reson 2015; 17:26. [PMID: 25885436 PMCID: PMC4389511 DOI: 10.1186/s12968-015-0131-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 03/13/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dobutamine associated left ventricular (LV) wall motion analyses exhibit reduced sensitivity for detecting inducible ischemia in individuals with increased LV wall thickness. This study was performed to better understand the mechanism of this reduced sensitivity in the elderly who often manifest increased LV wall thickness and risk factors for coronary artery disease. METHODS During dobutamine cardiovascular magnetic resonance (DCMR) stress testing, we assessed rate pressure product (RPP), aortic pulse wave velocity (PWV), LV myocardial oxygen demand (pressure volume area, PVA, mass, volumes, concentricity, and the presence of wall motion abnormalities (WMA) and first pass gadolinium enhanced perfusion defects (PDs) indicative of ischemia in 278 consecutively recruited individuals aged 69 ± 8 years with pre-existing or known risk factors for coronary artery disease. Each variable was assessed independently by personnel blinded to participant identifiers and analyses of other DCMR or hemodynamic variables. RESULTS Participants were 80% white, 90% hypertensive, 43% diabetic and 55% men. With dobutamine, 60% of the participants who exhibited PDs had no inducible WMA. Among these participants, myocardial oxygen demand was lower than that observed in those who had both wall motion and perfusion abnormalities suggestive of ischemia (p = 0.03). Relative to those with PDs and inducible WMAs, myocardial oxygen demand remained different in these individuals with PDs without an inducible WMA after accounting for LV afterload and contractility (p = 0.02 and 0.03 respectively), but not after accounting for either LV stress related end diastolic volume index (LV preload) or resting concentricity (p = 0.31-0.71). CONCLUSIONS During dobutamine stress testing, elderly patients experience increased LV concentricity and declines in LV preload and myocardial oxygen demand, all of which are associated with an absence of inducible LV WMAs indicative of myocardial ischemia. These findings provide insight as to why dobutamine associated wall motion analyses exhibit reduced sensitivity for identifying inducible ischemia in elderly. TRIAL REGISTRATION This study was registered with Clinicaltrials.gov (NCT00542503).
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Affiliation(s)
- Sujethra Vasu
- Department of Internal medicine, Section on Cardiology, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
| | - William C Little
- Department of Internal Medicine, University of Mississippi, Jackson, Mississippi, 39216, USA.
| | - Timothy M Morgan
- Department of Biostatistical sciences, Wake Forest School of Medicine, Winston Salem North Carolina, 27157, USA.
| | - Richard B Stacey
- Department of Internal medicine, Section on Cardiology, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
| | - William O Ntim
- Mid Carolina Cardiology, Charlotte North Carolina, 28204, USA.
| | - Craig Hamilton
- Department of Biomedical Engineering, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
| | - Vinay Thohan
- Aurora Cardiovascular Services, Milwaukee, Wisconsin, 53215, USA.
| | - Caroline Chiles
- Department of Radiology, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
| | - William Gregory Hundley
- Department of Internal medicine, Section on Cardiology, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
- Department of Radiology, Wake Forest School of Medicine, Winston Salem, North Carolina, 27157, USA.
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Vasu S, Morgan TM, Kitzman DW, Bertoni A, Stacey RB, Hamilton C, Chiles C, Thohan V, Hundley WG. Abnormal stress-related measures of arterial stiffness in middle-aged and elderly men and women with impaired fasting glucose at risk for a first episode of symptomatic heart failure. J Am Heart Assoc 2015; 4:e000991. [PMID: 25589534 PMCID: PMC4330048 DOI: 10.1161/jaha.114.000991] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background Abnormal resting arterial stiffness is present in middle‐aged and elderly persons with abnormalities of fasting glucose (diabetes or impaired fasting glucose) and is associated with exercise intolerance. We sought to determine whether these same persons exhibited stress‐related abnormalities of arterial stiffness. Methods and Results We analyzed dobutamine magnetic resonance stress imaging results from 373 consecutively recruited persons aged 55 to 85 years with normal fasting glucose, impaired fasting glucose, or diabetes who were at risk for but without symptomatic heart failure. Personnel blinded to participant identifiers measured arterial stiffness (brachial pulse pressure/left ventricular stroke volume indexed to body surface area, the aortic elastance index [brachial end‐systolic pressure/left ventricular stroke volume indexed to body surface area], and thoracic aortic distensibility) at 80% of the maximum predicted heart rate response for age. Participants averaged 69±8 years of age; 79% were white, 92% were hypertensive, and 66% were women. After accounting for hypertension, sex, coronary artery disease, smoking, medications, hypercholesterolemia, and visceral fat, we observed an effect of glycemic status for stress measures of arterial stiffness in those with diabetes and impaired fasting glucose relative to those with normal fasting glucose (P=0.002, P=0.02, and P=0.003, respectively). Conclusion Middle‐ and older‐aged individuals with diabetes or impaired fasting glucose have higher stress measures of arterial stiffness than those with normal fasting glucose. These data emphasize the need for future studies with larger sample sizes to determine whether stress‐related elevations in arterial stiffness are related to exercise intolerance and future episodes of heart failure experienced by those with abnormalities of fasting glucose. Clinical Trial Registration URL: http://clinicaltrials.gov/. Unique identifier: NCT00542503.
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Affiliation(s)
- Sujethra Vasu
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.)
| | - Timothy M Morgan
- Department of Biostatistical Sciences, Wake Forest School Health Sciences, Winston-Salem, NC (T.M.M.)
| | - Dalane W Kitzman
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.)
| | - Alain Bertoni
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.)
| | - Richard B Stacey
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.)
| | - Craig Hamilton
- Department of Biomedical Engineering, Wake Forest School Health Sciences, Winston-Salem, NC (C.H.)
| | - Caroline Chiles
- Department of Radiology, Wake Forest School Health Sciences, Winston-Salem, NC (C.C., G.H.)
| | - Vinay Thohan
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.)
| | - W Gregory Hundley
- Section of Cardiology, Department of Internal Medicine, Wake Forest School Health Sciences, Winston-Salem, NC (S.V., D.W.K., A.B., R.B.S., V.T., G.H.) Department of Radiology, Wake Forest School Health Sciences, Winston-Salem, NC (C.C., G.H.)
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Small, short-duration, dobutamine-induced perfusion defects are not associated with adverse prognosis in intermediate-risk individuals receiving cardiovascular magnetic resonance stress imaging. J Comput Assist Tomogr 2014; 38:427-33. [PMID: 24651743 DOI: 10.1097/rct.0000000000000046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The objective of this study was to assess the frequency and prognostic utility of small, short-duration left ventricular myocardial perfusion defects during dobutamine cardiovascular magnetic resonance (DCMR) stress imaging. METHODS We performed first-pass contrast-enhanced DCMR at peak stress in 331 consecutively recruited individuals (aged 68 ± 8 years, 50% men) at intermediate risk for a future cardiac event. Size, location, and persistence of low-signal intensity perfusion defects were recorded. Cardiac events were assessed by personnel blinded to imaging results for a median of 24 months after the DCMR. RESULTS Among the 55 individuals (16.6%) who exhibited small (<25% myocardial thickness) and short-duration (<5 frames in persistence) perfusion defects, diabetes was more prevalent (P = 0.019) and no cardiac events were observed. Large, persistent perfusion defects were associated with coronary artery disease, prior myocardial infarction, and decreased left ventricular function (P < 0.001 for all) and increased 2-year risk for a cardiac event (hazard ratio, 10.3; P < 0.001; confidence interval, 3.3-33.0). CONCLUSIONS In individuals with diabetes, hypertension, or coronary artery disease at intermediate risk for a future cardiac event, small, short-duration DCMR perfusion defects are not associated with increased 2-year risk for a subsequent cardiac event.
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Mandapaka S, Hamilton CA, Morgan TM, Hundley WG. Simultaneous measurement of left and right ventricular volumes and ejection fraction during dobutamine stress cardiovascular magnetic resonance. J Comput Assist Tomogr 2011; 35:614-7. [PMID: 21926858 DOI: 10.1097/rct.0b013e31822abbcd] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE During cardiovascular stress, if right ventricular (RV) stroke volume exceeds left ventricular (LV) stroke volume, then a large volume of blood is displaced into the pulmonary circulation that may precipitate pulmonary edema. We sought to determine the metrics by which cardiovascular magnetic resonance (CMR) could measure simultaneous displacement of RV and LV stroke volumes during dobutamine stress. METHODS Thirteen healthy subjects (5 women) aged 53 ± 10 years without medical conditions and taking no medications underwent 2 CMR examinations at 1.5 T separated by 4 to 8 weeks in which RV and LV stroke volumes were determined during intravenous dobutamine and atropine infused to achieve 80% of the maximum predicted heart rate response for age. RESULTS The RV and LV stroke volumes were highly correlated at each level of stress (rest: r = 0.98, P = 0.007; low stress: r = 0.87, P = 0.001; and peak stress: r = 0.88, P = 0.001), and the mean difference in SV at each level of stress (rest, low stress, and peak stress was 0 to 2 mL on examinations 1 and 2. CONCLUSIONS Simultaneous change in right and left ventricular stroke volumes can be assessed in a highly reproducible manner throughout the course of dobutamine CMR stress administered to achieve 80% of maximum predicted heart rate response for age. This technology may help identify discrepancies in RV and LV stroke volumes during cardiovascular stress that are associated with the development of pulmonary edema.
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Affiliation(s)
- Sangeeta Mandapaka
- Department of Internal Medicine (Cardiology Section), Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
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Chotenimitkhun R, Hundley WG. Pharmacological stress cardiovascular magnetic resonance. Postgrad Med 2011; 123:162-70. [PMID: 21566427 DOI: 10.3810/pgm.2011.05.2295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Over the past decade, cardiovascular magnetic resonance (CMR) has evolved into a cardiac stress testing modality that can be used to diagnose myocardial ischemia using intravenous dobutamine or vasodilator perfusion agents such as adenosine or dipyridamole. Because CMR produces high-resolution tomographic images of the human heart in multiple imaging planes, it has become a highly attractive noninvasive testing modality for those suspected of having myocardial ischemia. The purpose of this article is to review the clinical, diagnostic, and prognostic utility of stress CMR testing for patients with (or suspected of having) coronary artery disease.
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Affiliation(s)
- Runyawan Chotenimitkhun
- Department of Internal Medicine, Cardiology Section, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1045, USA
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Charoenpanichkit C, Little WC, Mandapaka S, Dall'Armellina E, Morgan TM, Hamilton CA, Hundley WG. Impaired left ventricular stroke volume reserve during clinical dobutamine stress predicts future episodes of pulmonary edema. J Am Coll Cardiol 2011; 57:839-48. [PMID: 21310321 DOI: 10.1016/j.jacc.2010.10.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 09/30/2010] [Accepted: 10/12/2010] [Indexed: 01/19/2023]
Abstract
OBJECTIVES The purpose of this study was to determine whether dobutamine-induced abnormal stress changes in left ventricular stroke volume (LVSV) and aortic stiffness predict future pulmonary edema. BACKGROUND Increased aortic stiffness that decreases LVSV during adrenergic stress may serve as a marker for future pulmonary edema (PE). METHODS We measured LVSV, ventriculovascular stiffness (pulse pressure/LVSV(index)), and aortic distensibility at rest and during intravenous dobutamine administration using cardiovascular magnetic resonance. Personnel blinded to dobutamine cardiovascular magnetic resonance followed participants longitudinally over time to identify those admitted to the hospital with PE. Data for 44 participants who had a hospital admission for PE were compared with data for 72 participants of similar age, sex, and resting left ventricular ejection fraction who remained PE free. RESULTS Expressed as median and interquartile range, participants with and without PE exhibited a decreased stress/rest LVSV ratio (0.9 [range 0.7 to 1.1] vs. 1.0 [range 0.9 to 1.2], respectively; p = 0.002), an increased ventriculovascular stiffness stress/rest ratio (1.4 [range 1.0 to 1.6] vs. 1.0 [range 0.8 to 1.3], respectively; p ≤ 0.001); and a decreased stress-induced measure of aortic distensibility (0.8 mm Hg(-3) [range 0.3 to 1.3 mm Hg(-3)] vs. 1.6 mm Hg(-3) [range 1.2 to 3.2 mm Hg(-3)], respectively; p = 0.002). After accounting for age, sex, left ventricular ejection fraction, risk factors for PE, and the presence of dobutamine-induced ischemia, LVSV reserve and the stress/rest ventriculovascular stiffness ratio still differed (p < 0.008 for both) in those with and without PE. CONCLUSIONS In patients without inducible ischemia during dobutamine stress testing in whom one might otherwise assume a favorable prognosis, the failure to increase LVSV or an increase in ventriculovascular stiffness indicates patients at risk of subsequent PE.
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Affiliation(s)
- Charaslak Charoenpanichkit
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1045, USA
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Charoenpanichkit C, Hundley WG. The 20 year evolution of dobutamine stress cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2010; 12:59. [PMID: 20977757 PMCID: PMC2984575 DOI: 10.1186/1532-429x-12-59] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Accepted: 10/26/2010] [Indexed: 01/03/2023] Open
Abstract
Over the past 20 years, investigators world-wide have developed and utilized dobutamine magnetic resonance stress testing procedures for the purpose of identifying ischemia, viability, and cardiac prognosis. This article traces these developments and reviews the data utilized to substantiate this relatively new noninvasive imaging procedure.
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Affiliation(s)
- Charaslak Charoenpanichkit
- Department of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - W Gregory Hundley
- Department of Internal Medicine Section on Cardiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
- Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
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Strigl S, Beroukhim R, Valente AM, Annese D, Harrington JS, Geva T, Powell AJ. Feasibility of dobutamine stress cardiovascular magnetic resonance imaging in children. J Magn Reson Imaging 2009; 29:313-9. [PMID: 19161182 DOI: 10.1002/jmri.21639] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
PURPOSE To evaluate the feasibility of dobutamine stress magnetic resonance (DSMR) in pediatric patients. MATERIALS AND METHODS The medical records of all DSMR studies performed on patients < or =22 years old at a single institution were retrospectively reviewed. The DSMR protocol included dobutamine doses up to 40 microg/kg/minute and atropine to attain the target heart rate [0.85 . (220 - age)]. RESULTS Thirty-two DSMR studies were performed in 28 patients (median age = 7.3 years; range = 0.8-22 years). Twenty of the studies were performed under general anesthesia. The protocol was completed in 26 studies, technical problems and interruptions were few, and image quality scores (1-5) for all ventricular wall segments were high (mean = 4.2). A heart rate > or =160 bpm was attained in 84% of the studies, a rate pressure product > or =20,000 beats . mm Hg in 87%, and a heart rate greater than or equal to the target heart rate in 19%. No serious adverse events occurred. One patient had an inducible wall motion abnormality. Interobserver agreement was 100% (kappa = 1.0) for test positivity and 92% (kappa = 0.72) for wall motion scores. CONCLUSION DSMR in pediatric patients is feasible and provides high-quality imaging of all ventricular wall segments with low interobserver variability. Further exploration of DSMR in pediatric patients is warranted, particularly for those children who are unable to cooperate sufficiently for exercise stress or have poor acoustic windows.
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Affiliation(s)
- Sebastian Strigl
- Department of Cardiology, Children's Hospital Boston, Boston, Massachusetts, USA
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Wallace EL, Morgan TM, Walsh TF, Dall’Armellina E, Ntim W, Hamilton CA, Hundley WG. Dobutamine cardiac magnetic resonance results predict cardiac prognosis in women with known or suspected ischemic heart disease. JACC Cardiovasc Imaging 2009; 2:299-307. [PMID: 19356575 PMCID: PMC2920607 DOI: 10.1016/j.jcmg.2008.10.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 10/14/2008] [Accepted: 10/16/2008] [Indexed: 01/19/2023]
Abstract
OBJECTIVES The purpose of this study was to determine the prognostic utility of dobutamine cardiac magnetic resonance (DCMR) stress test results in women. BACKGROUND To date, the preponderance of studies reporting the utility of DCMR stress results for predicting cardiac prognosis have been performed in men. We sought to determine the utility of DCMR results for predicting cardiac prognosis in women. METHODS Two hundred sixty-six consecutively referred women underwent DCMR in which left ventricular wall motion (LVWM) was assessed at rest and after intravenous dobutamine and atropine. Inducible LVWM abnormalities were identified during testing. Women were contacted to determine the post-DCMR occurrence of a cardiac event. All events were substantiated according to defined criteria and then were verified after a thorough medical record review by individuals blinded to testing data. RESULTS Women were contacted an average of 6.2 +/- 1.6 (median 6.2, range 0.8 to 10.4) years after DCMR; 27% of the women experienced an inducible LVWM abnormality during testing. In those with and without inducible LVWM abnormalities, the proportion of women with cardiac events were 63% versus 30%, respectively, (hazard ratio [HR]: 2.7; 95% confidence interval [CI]: 1.8 to 4.3 for the presence of inducible LVWM abnormalities p < 0.0001). The proportion of women with myocardial infarction (MI) and cardiac death were 33.3% and 7.5%, respectively. This resulted in a HR for MI and cardiac death of 4.1 (95% CI: 2.2 to 9.4) for those with versus those without inducible LVWM abnormalities; p < 0.0001. A subgroup analysis was performed in women without a history of coronary artery disease and in those with LVWM abnormalities, DCMR remained an adverse predictor of cardiac events (HR: 4.0, 95% CI: 1.8 to 9.0, p = 0.003). CONCLUSIONS Inducible LVWM abnormalities during DCMR predict cardiac death and MI in women. Similar to men, these results indicate that DCMR is a valuable noninvasive stress imaging modality for identifying cardiac risk in women with known or suspected ischemic heart disease.
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Affiliation(s)
- Eric L. Wallace
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - Timothy M. Morgan
- Department of Public Health Sciences, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - Thomas F. Walsh
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - Erica Dall’Armellina
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - William Ntim
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - Craig A. Hamilton
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | - W. Gregory Hundley
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
- Department of Radiology, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina, USA
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Abstract
Measurements of left ventricular function with cardiovascular magnetic resonance (CMR) at rest and during intravenous dobutamine are useful for identifying myocardial ischemia, viability, and the risk of subsequent cardiovascular events. Without ionizing radiation, intravascular iodinated contrast administration, or acoustic window limitations, CMR has emerged as a useful adjunct to transthoracic echocardiography for assessing patients with or suspected of having coronary artery disease.
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Mandapaka S, Hundley WG. Dobutamine cardiovascular magnetic resonance: A review. J Magn Reson Imaging 2006; 24:499-512. [PMID: 16892202 DOI: 10.1002/jmri.20678] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Dobutamine cardiovascular magnetic resonance (DCMR) is useful for identifying myocardial ischemia and viability in patients with known or suspected coronary artery disease (CAD). This article reviews the performance and utility of DCMR, its association with dobutamine stress echocardiography (DSE), and areas of active investigative research.
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Affiliation(s)
- Sangeeta Mandapaka
- Cardiology Section, Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157, USA
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Herrington DM, Brown WV, Mosca L, Davis W, Eggleston B, Hundley WG, Raines J. Relationship between arterial stiffness and subclinical aortic atherosclerosis. Circulation 2004; 110:432-7. [PMID: 15262851 DOI: 10.1161/01.cir.0000136582.33493.cc] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Noninvasive measures of arterial compliance may be useful for the detection of subclinical atherosclerosis. METHODS AND RESULTS Measures of calf and thigh arterial compliance (MaxV50) were recorded in 267 subjects who also underwent MRI of the distal aorta to quantify distal aorta atherosclerosis. The average of calf and thigh MaxV50 was strongly predictive of extent of aortic atherosclerosis and risk of being in the top quartile of aortic atherosclerosis after adjustment for the Framingham Coronary Risk Score (FCRS) or the combination of the FCRS and C-reactive protein (P<0.0001). The areas under the receiver operating curves predicting the top quartile of gender-specific aortic atherosclerosis were 0.57, 0.60, and 0.75 for models containing the FCRS, the FCRS and C-reactive protein, and the FCRS, C-reactive protein, and the average of calf and thigh MaxV50. CONCLUSIONS Lower-extremity arterial compliance may identify subjects with extensive subclinical atherosclerosis. Further studies examining the potential value of arterial stiffness as a screening tool to guide initiation of more aggressive preventive interventions are warranted.
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Affiliation(s)
- David M Herrington
- Department of Internal Medicine/Cardiology, Wake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, NC 27157, USA.
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15
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Darty SN, O'Neal J, Wesley-Farrington D, Davis AD, Link KM, Hundley G. Cardiovascular magnetic resonance imaging. ACTA ACUST UNITED AC 2004; 19:60-7. [PMID: 15133380 DOI: 10.1111/j.0889-7204.2004.02446.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recent advancements in magnetic resonance imaging hardware and software permit the assessment of cardiovascular structure and function at rest and during exercise or pharmacology-induced cardiac stress. With these developments, knowledge of cardiovascular imaging protocols in the magnetic resonance imaging environment is critical for nursing personnel. The purpose of this article is to review information pertinent to working in a magnetic resonance imaging environment and to describe the requirements of nursing personnel performing cardiovascular magnetic resonance imaging examinations.
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Affiliation(s)
- Stephen N Darty
- Department of Internal Medicine, Cardiology Section, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
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16
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Thomson LEJ, Kim RJ, Judd RM. Magnetic resonance imaging for the assessment of myocardial viability. J Magn Reson Imaging 2004; 19:771-88. [PMID: 15170783 DOI: 10.1002/jmri.20075] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The identification of myocardial viability in the setting of left ventricular (LV) dysfunction is crucial for the prediction of functional recovery following revascularization. Although echocardiography, positron emission tomography (PET), and nuclear imaging have validated roles, recent advances in cardiac magnetic resonance (CMR) technology and availability have led to increased experience in CMR for identification of myocardial viability. CMR has unique advantages in the ability of magnetic resonance spectroscopy (MRS) to measure subcellular components of myocardium, and in the image resolution of magnetic resonance proton imaging. As a result of excellent image resolution and advances in pulse sequences and coil technology, magnetic resonance imaging (MRI) can be used to identify the transmural extent of myocardial infarction (MI) in vivo for the first time. This review of the role of CMR in myocardial viability imaging describes the acute and chronic settings of ventricular dysfunction and concepts regarding the underlying pathophysiology. Recent advances in MRS and MRI are discussed, including the potential for dobutamine MRI to identify viable myocardium and a detailed review of the technique of delayed gadolinium (Gd) contrast hyperenhancement for visualization of viable and nonviable myocardium.
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Affiliation(s)
- Louise E J Thomson
- Duke Cardiovascular Magnetic Resonance Center, Duke University, Durham, North Carolina 27710, USA
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Rerkpattanapipat P, Mazur W, Link KM, Hundley WG. Assessment of cardiac function with MR imaging. Magn Reson Imaging Clin N Am 2003; 11:67-80. [PMID: 12797511 DOI: 10.1016/s1064-9689(02)00021-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A variety of black or white blood imaging techniques are available for assessing global and regional LV and RV function during cardiovascular MR imaging examinations. In addition to providing information about LV function at rest, these techniques provide diagnostic and prognostic information regarding myocardial ischemia and viability during MR imaging stress tests.
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Affiliation(s)
- Pairoj Rerkpattanapipat
- Cardiology Section, Wake Forest University School of Medicine, The Bowman Gray Campus, Winston-Salem, NC 27157-1045, USA
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Darty SN, Thomas MS, Neagle CM, Link KM, Wesley-Farrington D, Hundley WG. Cardiovascular magnetic resonance imaging. Am J Nurs 2002; 102:34-8; quiz 39. [PMID: 12473928 DOI: 10.1097/00000446-200212000-00013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Stephen N Darty
- Department of Internal Medicine, Section on Cardiology, Wake Forest University School of Nursing, Winston-Salem, NC 27157-1045, USA
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Rerkpattanapipat P, Morgan TM, Neagle CM, Link KM, Hamilton CA, Hundley WG. Assessment of preoperative cardiac risk with magnetic resonance imaging. Am J Cardiol 2002; 90:416-9. [PMID: 12161234 DOI: 10.1016/s0002-9149(02)02501-8] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Pairoj Rerkpattanapipat
- Department of Internal Medicine (Cardiology Section), Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157-1045, USA
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Current awareness in NMR in biomedicine. NMR IN BIOMEDICINE 2002; 15:305-312. [PMID: 12112613 DOI: 10.1002/nbm.749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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