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Mirzai S, Sarnaik KS, Persits I, Martens P, Estep JD, Chen P, Tang WHW. Combined Prognostic Impact of Low Muscle Mass and Hypoalbuminemia in Patients Hospitalized for Heart Failure: A Retrospective Cohort Study. J Am Heart Assoc 2024; 13:e030991. [PMID: 38258654 PMCID: PMC11056110 DOI: 10.1161/jaha.123.030991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024]
Abstract
BACKGROUND Sarcopenia and hypoalbuminemia have been identified as independent predictors of increased adverse outcomes, including mortality and readmissions, in hospitalized older adults with acute decompensated heart failure (ADHF). However, the impact of coexisting sarcopenia and hypoalbuminemia on morbidity and death in adults with ADHF has not yet been investigated. We aimed to investigate the combined effects of lower muscle mass (LMM) as a surrogate for sarcopenia and hypoalbuminemia on in-hospital and postdischarge outcomes of patients hospitalized for ADHF. METHODS AND RESULTS A total of 385 patients admitted for ADHF between 2017 and 2020 at a single institution were retrospectively identified. Demographic and clinical data were collected, including serum albumin levels at admission and discharge. Skeletal muscle indices were derived from semi-automated segmentation software analysis on axial chest computed tomography at the twelfth vertebral level. Our analysis revealed that patients who had LMM with admission hypoalbuminemia experienced increased diagnoses of infection and delirium with longer hospital length of stay and more frequent discharge to a facility. Upon discharge, 27.9% of patients had higher muscle mass without discharge hypoalbuminemia (reference group), 9.7% had LMM without discharge hypoalbuminemia, 38.4% had higher muscle mass with discharge hypoalbuminemia, and 24.0% had LMM with discharge hypoalbuminemia; mortality rates were 37.6%, 51.4%, 48.9%, and 63.2%, respectively. 1- and 3-year mortality risks were highest in those with LMM and discharge hypoalbuminemia; this relationship remained significant over a median 23.6 (3.1-33.8) months follow-up time despite multivariable adjustments (hazard ratio, 2.03 [95% CI, 1.31-3.16]; P=0.002). CONCLUSIONS Hospitalization with ADHF, LMM, and hypoalbuminemia portend heightened mortality risk.
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Affiliation(s)
- Saeid Mirzai
- Section on Cardiovascular Medicine, Department of Internal MedicineWake Forest University School of MedicineWinston‐SalemNCUSA
- Department of Internal MedicineCleveland ClinicClevelandOHUSA
| | | | - Ian Persits
- Department of Internal MedicineCleveland ClinicClevelandOHUSA
| | - Pieter Martens
- Kaufman Center for Heart Failure Treatment and Recovery, Heart Vascular and Thoracic Institute, Cleveland ClinicClevelandOHUSA
| | - Jerry D. Estep
- Department of CardiologyCleveland Clinic FloridaWestonFLUSA
| | - Po‐Hao Chen
- Section of Musculoskeletal Imaging, Imaging Institute, Cleveland ClinicClevelandOHUSA
| | - W. H. Wilson Tang
- Kaufman Center for Heart Failure Treatment and Recovery, Heart Vascular and Thoracic Institute, Cleveland ClinicClevelandOHUSA
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Rosano G, Ponikowski P, Vitale C, Anker SD, Butler J, Fabien V, Filippatos G, Kirwan BA, Macdougall IC, Metra M, Ruschitzka F, Kumpeson V, Goehring UM, van der Meer P, Jankowska EA. Intravenous ferric carboxymaltose for iron repletion following acute heart failure in patients with and without diabetes: a subgroup analysis of the randomized AFFIRM-AHF trial. Cardiovasc Diabetol 2023; 22:215. [PMID: 37592272 PMCID: PMC10436432 DOI: 10.1186/s12933-023-01943-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/27/2023] [Indexed: 08/19/2023] Open
Abstract
BACKGROUND In AFFIRM-AHF, treatment of iron deficiency with intravenous ferric carboxymaltose (FCM) reduced the risk of heart failure (HF) hospitalization and improved quality of life (QoL) vs placebo in patients stabilized following an acute HF (AHF) episode, with no effect on cardiovascular (CV) death. Diabetes and iron deficiency frequently accompany AHF. This post hoc analysis explored the effects of diabetes on outcomes in AFFIRM-AHF patients. METHODS Patients were stratified by diabetes yes/no at baseline. The effects of FCM vs placebo on primary (total HF hospitalizations and CV death) and secondary (total CV hospitalizations and CV death; CV death; total HF hospitalizations; time to first HF hospitalization or CV death; and days lost due to HF hospitalizations or CV death) endpoints at Week 52 and change vs baseline in disease-specific QoL (12-item Kansas City Cardiomyopathy Questionnaire [KCCQ-12]) at Week 24 were assessed by subgroup. For each endpoint, the interaction between diabetes status and treatment outcome was explored. RESULTS Of 1108 AFFIRM-AHF patients, 475 (FCM: 231; placebo: 244) had diabetes and 633 (FCM: 327; placebo: 306) did not have diabetes. Patients with diabetes were more commonly male (61.5% vs 50.9%), with a higher frequency of ischemic HF etiology (57.9% vs 39.0%), prior HF history (77.7% vs 66.5%), and comorbidities (including previous myocardial infarction [49.3% vs 32.9%] and chronic kidney disease [51.4% vs 32.4%]) than those without diabetes. The annualized event rate/100 patient-years with FCM vs placebo for the primary endpoint was 66.9 vs 80.9 in patients with diabetes (rate ratio [RR]: 0.83, 95% CI 0.58-1.81) and 51.3 vs 66.9 in patients without diabetes (RR: 0.77, 95% CI 0.55-1.07), with no significant interaction between diabetes status and treatment effect (pinteraction = 0.76). Similar findings were observed for secondary outcomes. Change from baseline in KCCQ-12 overall summary score was numerically greater with FCM vs placebo at almost all time points in both subgroups, with no interaction between diabetes and treatment effect at Week 24. CONCLUSIONS The clinical and QoL benefits observed with intravenous FCM in patients with iron deficiency following stabilization from an AHF episode are independent of diabetes status. Trial registration Clinicaltrials.gov, NCT02937454 (registered 10.18.2016).
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Affiliation(s)
- Giuseppe Rosano
- Department of Medical Sciences, Centre for Clinical and Basic Research, IRCCS San Raffaele, Rome, Italy.
| | - Piotr Ponikowski
- Institute of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland
- Institute of Heart Diseases, University Hospital, Wroclaw, Poland
| | - Cristiana Vitale
- Department of Medical Sciences, Centre for Clinical and Basic Research, IRCCS San Raffaele, Rome, Italy
| | - Stefan D Anker
- Department of Cardiology (CVK) of German Heart Center Charité; Institute of Health Center for Regenerative Therapies (BCRT), German Centre for Cardiovascular Research (DZHK) partner site Berlin, Charité Universitätsmedizin, Berlin, Germany
| | - Javed Butler
- Baylor Scott and White Research Institute, Dallas, TX, USA
- University of Mississippi, Jackson, MS, USA
| | | | - Gerasimos Filippatos
- National and Kapodistrian University of Athens Medical School, Athens University Hospital Attikon, Athens, Greece
| | - Bridget-Anne Kirwan
- Department of Clinical Research, SOCAR Research SA, Nyon, Switzerland
- London School of Hygiene and Tropical Medicine, University College London, London, UK
| | | | - Marco Metra
- Cardiology, ASST Spedali Civili and Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy
| | - Frank Ruschitzka
- Department of Cardiology, University Heart Center, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | | | | | - Peter van der Meer
- Department of Cardiology, University Medical Center Groningen, Groningen, The Netherlands
| | - Ewa A Jankowska
- Institute of Heart Diseases, Wroclaw Medical University, Wroclaw, Poland
- Institute of Heart Diseases, University Hospital, Wroclaw, Poland
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Ul Amin N, Sabir F, Amin T, Sarfraz Z, Sarfraz A, Robles-Velasco K, Cherrez-Ojeda I. SGLT2 Inhibitors in Acute Heart Failure: A Meta-Analysis of Randomized Controlled Trials. Healthcare (Basel) 2022; 10:2356. [PMID: 36553880 PMCID: PMC9778112 DOI: 10.3390/healthcare10122356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Acute heart failure (AHF) is a major public health concern, affecting 26 million worldwide. Sodium-glucose cotransporter 2 (SGLT2) inhibitors are a class of glucose-lowering drugs, comprising canagliflozin, dapagliflozin, and empagliflozin that are being explored for AHF. We aim to meta-analyze the effectiveness of SGLT2 inhibitors compared to placebo for primary outcomes including all-cause and cardiovascular mortality, heart failure events, symptomatic improvement, and readmissions. Our secondary outcome is the risk of serious adverse events. This meta-analysis has been designed in accordance with the PRISMA Statement 2020. A systematic search across PubMed, Scopus, and Cochrane Library was conducted through August 13, 2022. The following keywords were utilized: sglt2, sodium-glucose transporter 2 inhibitors, sglt2 inhibitors, decompensated heart failure, de-novo heart failure, and/or acute heart failure. Only randomized controlled trials (RCTs) with adult patients (>18 years), hospitalized with de-novo AHF, acutely decompensated chronic heart failure with reduced, borderline, or preserved ejection, and receiving SGLT2 inhibitors were included. A quantitative analytical methodology was applied where the standardized mean difference (SMD) applying 95% confidence intervals (CI) for continuous outcomes and risk ratio (RR) with 95% CI was yielded. All tests were carried out on Review Manager 5.4 (Cochrane). In total, three RCTs were included pooling in a total of 1831 patients where 49.9% received SGLT2 inhibitors. The mean age was 72.9 years in the interventional group compared to 70.6 years in the placebo. Only 33.7% of the sample was female. The follow-up spanned 2−9 months. Heart failure events were reduced by 62% in the interventional group (RR = 0.66, p < 0.0001). readmissions had a reduced risk of 24% with SGLT2 inhibitors (RR = 0.76, p = 0.03). We assessed the efficacy and safety of SGLT2 inhibitors in preventing complications post-AHF. The odds of all-cause mortality, cardiovascular mortality, heart failure events, and re-admissions rates were substantially reduced within the first 1−9 months of hospitalization.
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Affiliation(s)
- Noor Ul Amin
- Department of Acute Medicine, King’s Mill Hospital, Sutton-in-Ashfield NG17 4JL, UK
| | - Faiza Sabir
- Department of Research, King Edward Medical University, Lahore 54000, Pakistan
| | - Talal Amin
- Department of Research, Nishtar Medical College, Multan 60000, Pakistan
| | - Zouina Sarfraz
- Department of Research and Publications, Fatima Jinnah Medical University, Lahore 54000, Pakistan
| | - Azza Sarfraz
- Department of Pediatrics and Child Health, The Aga Khan University, Karachi 74800, Pakistan
| | - Karla Robles-Velasco
- Department of Allergy, Immunology & Pulmonary Medicine, Universidad Espíritu Santo, Samborondón 092301, Ecuador
| | - Ivan Cherrez-Ojeda
- Department of Allergy, Immunology & Pulmonary Medicine, Universidad Espíritu Santo, Samborondón 092301, Ecuador
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Rizzuto N, Charles G, Knobf MT. Decreasing 30-Day Readmission Rates in Patients With Heart Failure. Crit Care Nurse 2022; 42:13-19. [PMID: 35908767 DOI: 10.4037/ccn2022417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Heart failure affects approximately 6.2 million adults in the United States and has an estimated national cost of $30.7 billion annually. Despite advances in treatment, heart failure is a leading cause of hospital readmissions. Nonadherence to treatment plans, lack of education, and lack of access to care contribute to poorer outcomes. LOCAL PROBLEM For patients with heart failure, the mean readmission rate is 21% nationally and 23% in New York State. Before the pilot heart failure program began, the 30-day readmission rate in the study institution was 28.6%. METHODS A multidisciplinary team created a heart failure self-care pilot program that was implemented on a hospital telemetry unit with 47 patients. Patients received education on their disease process, medications, diet, exercise, and early symptom recognition. Patients received a follow-up telephone call 48 to 72 hours after discharge and were seen by a cardiologist within a week of discharge. RESULTS The 30-day readmission rate for heart failure decreased by 16.6% after implementation of the pilot program, which improved patient adherence to their medication and treatment plan and resulted in a reduction of readmissions. DISCUSSION Patients in the pilot program represented diverse backgrounds. Socioeconomic factors such as the lack of affordable, healthy food choices and easy access to resources were associated with worse outcomes. CONCLUSIONS The evidence-based heart failure program improved knowledge, early symptom recognition, lifestyle modification, and adherence to medication, treatment plan, and follow-up appointments. The multidisciplinary team approach to the heart failure program reduced gaps in care and improved coordination and transition of care.
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Affiliation(s)
- Nancy Rizzuto
- Nancy Rizzuto is an adult nurse practitioner and the Director of Nursing, Critical Care, and Cardiology Services, Brookdale University Hospital, Brooklyn, New York
| | - Greg Charles
- Greg Charles is a program director for Cardiology Services and an angioplasty specialist, Brookdale University Hospital
| | - M Tish Knobf
- M. Tish Knobf is a professor of nursing, Yale University School of Nursing, Orange, Connecticut
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Aleksova A, Sinagra G, Beltrami AP, Pierri A, Ferro F, Janjusevic M, Gagno G. Biomarkers in the management of acute heart failure: state of the art and role in COVID-19 era. ESC Heart Fail 2021; 8:4465-4483. [PMID: 34609075 PMCID: PMC8652929 DOI: 10.1002/ehf2.13595] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/07/2021] [Accepted: 08/19/2021] [Indexed: 12/14/2022] Open
Abstract
Acute heart failure (AHF) affects millions of people worldwide, and it is a potentially life‐threatening condition for which the cardiologist is more often brought into play. It is crucial to rapidly identify, among patients presenting with dyspnoea, those with AHF and to accurately stratify their risk, in order to define the appropriate setting of care, especially nowadays due to the coronavirus disease 2019 (COVID‐19) outbreak. Furthermore, with physical examination being limited by personal protective equipment, the use of new alternative diagnostic and prognostic tools could be of extreme importance. In this regard, usage of biomarkers, especially when combined (a multimarker approach) is beneficial for establishment of an accurate diagnosis, risk stratification and post‐discharge monitoring. This review highlights the use of both traditional biomarkers such as natriuretic peptides (NP) and troponin, and emerging biomarkers such as soluble suppression of tumourigenicity (sST2) and galectin‐3 (Gal‐3), from patients' emergency admission to discharge and follow‐up, to improve risk stratification and outcomes in terms of mortality and rehospitalization.
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Affiliation(s)
- Aneta Aleksova
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI) and Department of Medical Surgical and Health Science, University of Trieste, Via Valdoni 7, Trieste, 34149, Italy
| | - Gianfranco Sinagra
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI) and Department of Medical Surgical and Health Science, University of Trieste, Via Valdoni 7, Trieste, 34149, Italy
| | - Antonio P Beltrami
- Clinical Pathology Department, Azienda Sanitaria Universitaria Friuli Centrale (ASUFC) and Department of Medicine (DAME), University of Udine, Udine, 33100, Italy
| | - Alessandro Pierri
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI) and Department of Medical Surgical and Health Science, University of Trieste, Via Valdoni 7, Trieste, 34149, Italy
| | | | - Milijana Janjusevic
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI) and Department of Medical Surgical and Health Science, University of Trieste, Via Valdoni 7, Trieste, 34149, Italy
| | - Giulia Gagno
- Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI) and Department of Medical Surgical and Health Science, University of Trieste, Via Valdoni 7, Trieste, 34149, Italy
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The Risk of Mortality Associated With Opioid Use in Patients With Acute Heart Failure: Systematic Review and Meta-analysis. J Cardiovasc Pharmacol 2021; 77:123-129. [PMID: 33235028 DOI: 10.1097/fjc.0000000000000954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 10/22/2020] [Indexed: 11/26/2022]
Abstract
AIMS The impact of opioids in acute heart failure (AHF) is unclear. This systematic review with meta-analysis aimed to evaluate the mortality risk associated with opioid use in AHF. METHODS AND RESULTS An electronic search was performed in MEDLINE, CENTRAL, Web of Science Core Collection, and SCIELO (December 2019) for randomized controlled trials and observational studies evaluating the impact of opioids in in-hospital and 30-day mortality in patients with AHF. Data were screened, extracted, and appraised by 2 independent reviewers. A random-effects meta-analysis to estimate the pooled odds ratios (OR) with 95% confidence intervals (CI) was performed and heterogeneity was evaluated using the I2 statistics. Six observational retrospective studies with 151,735 participants were included. Pooled results showed a statistical significant association between morphine and in-hospital mortality (OR 1.78; 95% CI 1.01-3.13; I2 = 92%; 6 studies) and 30-day mortality (OR 1.56; 95% CI 1.14-2.15; I2 = 0; 2 studies). Both outcomes were rated as having a serious risk of bias and had a very low Grading of Recommendation, Assessment, Development, and Evaluation evidence. CONCLUSIONS Opioids seem to be associated with an increased risk of short-term mortality in AHF patients; however, the confidence in the estimated effect is very low, which highlights the need of further research to evaluate this question.
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Ng DLC, Chai CS, Tan KL, Chee KH, Tung YZ, Wai SY, Teo WTJ, Ang BT, Lim MA, Tan SB. The Efficacy of a Single Session of 20-Minute Mindful Breathing in Reducing Dyspnea Among Patients With Acute Decompensated Heart Failure: A Randomized Controlled Trial. Am J Hosp Palliat Care 2020; 38:246-252. [DOI: 10.1177/1049909120934743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Heart failure is the leading cause of morbidity and mortality worldwide. Standard treatment for heart failure includes pharmacotherapy and cardiac device implants. However, supportive approaches in managing dyspnea in heart failure are limited. This study aimed to test the efficacy of 20-minute mindful breathing in reducing dyspnea among patients admitted for acute decompensated heart failure. We conducted a parallel-group, non-blinded, randomized controlled trial of a single session of 20-minute mindful breathing plus standard care versus standard care alone among patients admitted for moderate to severe dyspnea due to acute decompensated heart failure, using the dyspnea score based on the Edmonton Symptom Assessment System (ESAS), at the Cardiology Unit of University Malaya Medical Centre in Malaysia. Thirty participants were randomly assigned to a single session of 20-minute mindful breathing plus standard care (n = 15) or standard care alone (n = 15), with no difference in their demographic and clinical characteristics. There was statistically significant reduction in dyspnea in the intervention group compared to the control group at minute 20 (U = 49.5, n1 = 15, n2 =15, median reduction in ESAS dyspnea score 1 = 2, median reduction in ESAS dyspnea score 2 = 0, mean rank 1 = 11.30, mean rank 2 = 19.70, z = −2.692, r = 0.4, P = 0.007). Our results provided evidence that a single session of 20-minute mindful breathing was efficacious in reducing dyspnea for patients admitted for acute decompensated heart failure.
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Affiliation(s)
- Diana Leh-Ching Ng
- Department of Medicine, Faculty of Medicine and Health Science, University Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia
| | - Chee-Shee Chai
- Department of Medicine, Faculty of Medicine and Health Science, University Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia
| | - Kok-Leng Tan
- Department of Medicine, Faculty of Medicine, University Sains Malaysia, Kelantan, Malaysia
| | - Kok-Han Chee
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Yu-Zhen Tung
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Suet-Yen Wai
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Wei-Ting Joyce Teo
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Bin-Ting Ang
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Min-Ai Lim
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Seng-Beng Tan
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Model-Based Quantification of Left Ventricular Diastolic Function in Critically Ill Patients with Atrial Fibrillation from Routine Data: A Feasibility Study. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2019; 2019:9682138. [PMID: 31223333 PMCID: PMC6541946 DOI: 10.1155/2019/9682138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 03/17/2019] [Indexed: 12/16/2022]
Abstract
Introduction Left ventricular diastolic dysfunction (LVDD) and atrial fibrillation (AF) are connected by pathophysiology and prevalence. LVDD remains underdiagnosed in critically ill patients despite potentially significant therapeutic implications since direct measurement cannot be performed in routine care at the bedside, and echocardiographic assessment of LVDD in AF is impaired. We propose a novel approach that allows us to infer the diastolic stiffness, β, a key quantitative parameter of diastolic function, from standard monitoring data by solving the nonlinear, ill-posed inverse problem of parameter estimation for a previously described mechanistic, physiological model of diastolic filling. The beat-to-beat variability in AF offers an advantageous setting for this. Methods By employing a global optimization algorithm, β is inferred from a simple six parameter and an expanded seven parameter model of left ventricular filling. Optimization of all parameters was limited to the interval ]0, 400[ and initialized randomly on large intervals encompassing the support of the likelihood function. Routine ECG and arterial pressure recordings of 17 AF and 3 sinus rhythm (SR) patients from the PhysioNet MGH/MF Database were used as inputs. Results Estimation was successful in 15 of 17 AF patients, while in the 3 SR patients, no reliable estimation was possible. For both models, the inferred β (0.065 ± 0.044 ml−1 vs. 0.038 ± 0.033 ml−1 (p=0.02) simple vs. expanded) was compatible with the previously described (patho) physiological range. Aortic compliance, α, inferred from the expanded model (1.46 ± 1.50 ml/mmHg) also compared well with literature values. Conclusion The proposed approach successfully inferred β within the physiological range. This is the first report of an approach quantifying LVDF from routine monitoring data in critically ill AF patients. Provided future successful external validation, this approach may offer a tool for minimally invasive online monitoring of this crucial parameter.
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