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Seker M, Aktas Yildirim S, Ulugol H, Gucyetmez B, Toraman F. Cardiovascular Effects of Tourniquet Application with Cardiac Cycle Efficiency: A Prospective Observational Study. J Clin Med 2024; 13:2745. [PMID: 38792287 PMCID: PMC11122613 DOI: 10.3390/jcm13102745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
Objectives: The impact of the tourniquet on cardiac efficiency remains unknown. This study aimed to assess the impact of the tourniquet on cardiac cycle efficiency (CCE) and to interpret how general anesthesia (GA) or combined spinal epidural anesthesia (CSEA) affects this during surgery using cardiac energy parameters. Methods: This prospective observational study included 43 patients undergoing elective unilateral total knee arthroplasty (TKA) with a tourniquet divided into GA (n = 22) and CSEA (n = 21) groups. Cardiac energy parameters were measured before anesthesia (T1), pre-tourniquet inflation (T2), during inflation (T3-T8), and post-deflation (T9). The estimated power of the study was 0.99 based on the differences and standard deviations in CCE at T2-T3 for all patients (effect size: 0.88, alpha error: 0.05). Results: CCE decreased significantly more at T3 in the GA group than in the CSEA group, whereas dP/dtmax and Ea increased more (p < 0.05, p < 0.001, and p < 0.01, respectively). At T9, CCE increased significantly in the GA group, whereas dP/dtmax and Ea decreased (p < 0.05, p < 0.001, and p < 0.001, respectively). Conclusions: The tourniquet reduces cardiac efficiency through compensatory responses, and CSEA may mitigate this effect.
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Affiliation(s)
- Merve Seker
- Department of Anesthesiology and Reanimation, Acibadem Mehmet Ali Aydinlar University School of Medicine, Istanbul 34752, Turkey; (S.A.Y.); (H.U.); (B.G.); (F.T.)
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2
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Wu Y, Tian P, Liang L, Chen Y, Feng J, Huang B, Huang L, Zhao X, Wang J, Guan J, Li X, Zhang J, Zhang Y. Improved Prognostic Performance of Right Atrial Pressure-Corrected Cardiac Power Output in Pulmonary Hypertension and Heart Failure with Preserved Ejection Fraction. J Cardiovasc Transl Res 2024; 17:448-457. [PMID: 37644296 PMCID: PMC11052873 DOI: 10.1007/s12265-023-10429-y] [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: 06/19/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Cardiac power output (CPO) is a powerful predictor of adverse outcomes in heart failure (HF). However, the original formula of CPO included the difference between mean arterial pressure and right atrial pressure (RAP). The prognostic performance of RAP-corrected CPO (CPORAP) remains unknown in heart failure with preserved ejection fraction (HFpEF). We studied 101 HF patients with a left ventricular ejection fraction > 40% who had pulmonary hypertension due to left heart disease. CPORAP was significantly more discriminating than CPO in predicting outcomes (Delong test, P = 0.004). Twenty-five (24.8%) patients presented with dis-concordantly high CPORAP and low CPO when stratified by the identified CPORAP threshold of 0.547 W and the accepted CPO threshold of 0.803 W. These patients had the lowest RAP, and their cumulative incidence was comparable with those with concordantly high CPO and CPORAP (P = 0.313). CPORAP might identify patients with right ventricular involvement, thereby providing better prognostic performance than CPO in HFpEF.
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Affiliation(s)
- Yihang Wu
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Pengchao Tian
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Lin Liang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Yuyi Chen
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Jiayu Feng
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Boping Huang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Liyan Huang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Xuemei Zhao
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Jing Wang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Jingyuan Guan
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Xinqing Li
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China
| | - Jian Zhang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China.
- Key Laboratory of Clinical Research for Cardiovascular Medications, National Health Committee, Beijing, China.
| | - Yuhui Zhang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing, 100037, China.
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Magni F, Soloperto R, Farinella A, Bogossian E, Halenarova K, Pletschette Z, Gozza M, Labbé V, Ageno W, Taccone FS, Annoni F. Cardiac power output is associated with cardiovascular related mortality in the ICU in post-cardiac arrest patients. Resuscitation 2024; 194:110062. [PMID: 38030115 DOI: 10.1016/j.resuscitation.2023.110062] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/05/2023] [Accepted: 11/19/2023] [Indexed: 12/01/2023]
Abstract
AIM Although brain injury is the main determinant of poor outcome following cardiac arrest (CA), cardiovascular failure is the leading cause of death within the first days after CA. However, it remains unclear which hemodynamic parameter is most suitable for its early recognition. We investigated the association of cardiac power output (CPO) with early mortality in intensive care unit (ICU) after CA and with mortality related to post-CA cardiovascular failure. METHODS Retrospective analysis of adult comatose survivors of CA admitted to the ICU of a University Hospital. Exclusion criteria were treatment with extracorporeal cardiopulmonary resuscitation, ECMO or intra-aortic balloon pump. We retrieved CA characteristics; we recorded mean arterial pressure, cardiac output, CPO (as derived parameter) and the vasoactive-inotropic score for the first 72 hours after ROSC, at intervals of 8 hours. ICU death was defined as related to post-CA cardiovascular failure when death occurred as a direct consequence of shock, secondary CA or fatal arrhythmia, or related to neurological injury if this led to withdrawal of life-sustaining therapy or brain death. RESULTS Among the 217 patients (median age 66 years, 65% male, 61.8% out-of-hospital CA), 142 (65.4%) died in ICU: 99 (69.7%) patients died from neurological injury and 43 (30.3%) from cardiovascular-related causes. Comparing the evolution over time of CPO between survivors and non-survivors, a statistically significant difference was found only at +8 hours after CA (p = 0.0042). In multivariable analysis, CPO at 8-hour was significantly associated with cardiovascular-related mortality (p = 0.007). CONCLUSIONS In post-CA patients, the 8-hour CPO is an independent factor associated with ICU cardiovascular-related mortality.
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Affiliation(s)
- Federica Magni
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium; University of Insubria, Via Ravasi 2, 21100 Varese, Italy
| | - Rossana Soloperto
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium; Fondazione Policlinico Universitario Campus Bio-Medico, Via Alvaro del Portillo, 200, 00128 Roma, Italy
| | - Anita Farinella
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium; University of Ferrara, Via Savonarola, 9, 44121 Ferrara, Italy; Department of Anesthesia and Intensive Care, Istituto Mediterraneo per i trapianti e Terapie ad alta specializzazione (IRCCS-ISMETT), Palermo, Italy
| | - Elisa Bogossian
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Katarina Halenarova
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Zoe Pletschette
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Mariangela Gozza
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Vincent Labbé
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Walter Ageno
- University of Insubria, Via Ravasi 2, 21100 Varese, Italy
| | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium
| | - Filippo Annoni
- Department of Intensive Care, Erasme Hospital, Lennik Road 808, 1070 Brussels, Belgium.
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Grinstein J, Houston BA, Nguyen AB, Smith BA, Chinco A, Pinney SP, Tedford RJ, Belkin MN. Standardization of the Right Heart Catheterization and the Emerging Role of Advanced Hemodynamics in Heart Failure. J Card Fail 2023; 29:1543-1555. [PMID: 37633442 DOI: 10.1016/j.cardfail.2023.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/28/2023]
Abstract
The accurate assessment of hemodynamics is paramount to providing timely and efficacious care for patients presenting in cardiogenic shock. Recently, the regular use of the pulmonary artery catheter in cardiogenic shock has had a resurgence with emerging data indicating improved survival in the modern era. Optimal multidisciplinary management of advanced heart failure and cardiogenic shock relies on our ability to effectively communicate and understand the complete hemodynamic assessment. Standardization of data acquisition and a renewed focus on the physiological processes, and thresholds driving disease progression, including the coupling ratio and myocardial reserve, are needed to fully understand and interpret the hemodynamic assessment. This State-of-the-Art review discusses best practices in the cardiac catheterization laboratory as well as emerging data on the prognostic role of emerging advanced hemodynamic parameters.
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Affiliation(s)
- Jonathan Grinstein
- University of Chicago, Department of Medicine, Section of Cardiology, Chicago, Illinois.
| | - Brian A Houston
- Medical University of South Carolina, Department of Medicine, Section of Heart Failure, Charleston, South Carolina
| | - Ann B Nguyen
- University of Chicago, Department of Medicine, Section of Cardiology, Chicago, Illinois
| | - Bryan A Smith
- University of Chicago, Department of Medicine, Section of Cardiology, Chicago, Illinois
| | - Annalyse Chinco
- University of Chicago, Department of Surgery, Chicago, Illinois
| | - Sean P Pinney
- Mount Sinai Hospital, Department of Medicine, Section of Cardiology, New York, New York
| | - Ryan J Tedford
- Medical University of South Carolina, Department of Medicine, Section of Heart Failure, Charleston, South Carolina
| | - Mark N Belkin
- University of Chicago, Department of Medicine, Section of Cardiology, Chicago, Illinois
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5
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Wu Y, Tian P, Liang L, Chen Y, Feng J, Huang B, Huang L, Zhao X, Wang J, Guan J, Li X, Zhang Y, Zhang J. Afterload-related cardiac performance is a powerful hemodynamic predictor of mortality in patients with chronic heart failure. Ther Adv Chronic Dis 2023; 14:20406223231171554. [PMID: 37324410 PMCID: PMC10265365 DOI: 10.1177/20406223231171554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/07/2023] [Indexed: 06/17/2023] Open
Abstract
Background Afterload-related cardiac performance (ACP), a diagnostic parameter for septic cardiomyopathy, integrates both cardiac performance and vascular effects and could predict prognosis in septic shock. Objectives We hypothesized that ACP would also correlate with clinical outcomes in patients with chronic heart failure (HF). Design A retrospective study. Methods We retrospectively studied consecutive patients with chronic HF who underwent right heart catheterization and established an expected cardiac output-systemic vascular resistance (CO-SVR) curve model in chronic HF for the first time. ACP was calculated as COmeasured/COpredicted × 100%. ACP > 80%, 60% < ACP ⩽ 80%, and ACP ⩽ 60% represented less impaired, mildly impaired, and severely impaired cardiovascular function, respectively. The primary outcome was all-cause mortality, and the secondary outcome was event-free survival. Results A total of 965 individual measurements from 290 eligible patients were used to establish the expected CO-SVR curve model (COpredicted = 53.468 × SVR -0.799). Patients with ACP ⩽ 60% had higher serum NT-proBNP levels (P < 0.001), lower left ventricular ejection fraction (P = 0.001), and required dopamine more frequently (P < 0.001). Complete follow-up data were available in 263 of 290 patients (90.7%). After multivariate adjustment, ACP remained associated with both primary outcome (hazard ratio (HR) 0.956, 95% confidence interval (CI) 0.927-0.987) and secondary outcome (HR 0.977, 95% CI 0.963-0.992). Patients with ACP ⩽ 60% had the worst prognosis (all P < 0.001). ACP was significantly more discriminating (area under the curve of 0.770) than other conventional hemodynamic parameters in predicting mortality (Delong test, all P < 0.05). Conclusion ACP is a powerful independent hemodynamic predictor of mortality in patients with chronic HF. ACP and the novel CO-SVR two-dimensional graph could be useful in assessing cardiovascular function and making clinical decisions. Clinical trial registration URL: https://www.clinicaltrials.gov. Unique identifier: NCT02664818.
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Affiliation(s)
- Yihang Wu
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Pengchao Tian
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lin Liang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuyi Chen
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jiayu Feng
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Boping Huang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Liyan Huang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xuemei Zhao
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jing Wang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Jingyuan Guan
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xinqing Li
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuhui Zhang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167, Beilishi Road, Xicheng District, Beijing 100037, China
| | - Jian Zhang
- Heart Failure Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 167, Beilishi Road, Xicheng District, Beijing 100037, China
- Key Laboratory of Clinical Research for Cardiovascular Medications, National Health Committee, Beijing, China
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6
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Chiba Y, Iwano H, Aoyagi H, Tamaki Y, Motoi K, Ishizaka S, Murayama M, Yokoyama S, Nakabachi M, Nishino H, Kaga S, Kamiya K, Nagai T, Anzai T. Associations of right ventricular pulsatile load and cardiac power output to clinical outcomes in heart failure: Difference from systemic circulation. J Cardiol 2023; 81:404-412. [PMID: 36503065 DOI: 10.1016/j.jjcc.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/21/2022] [Accepted: 11/20/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Although left ventricular (LV) cardiac power output (CPO) is a powerful prognostic indicator in heart failure (HF), the significance of right ventricular (RV) CPO is unknown. In contrast, RV pulsatile load is a key prognostic marker in HF. We investigated the impact of RV-CPO and pulsatile load on cardiac outcome and the prognostic performance of the combined systemic and pulmonary circulation parameters in HF. METHODS Right heart catheterization and echocardiography were performed in 231 HF patients (62 ± 16 years, LV ejection fraction 42 ± 18 %). Invasive and noninvasive CPOs were calculated from mean systemic or pulmonary arterial pressure and cardiac output. LV-CPO was then normalized to LV mass (LV-P/M). Pulmonary arterial capacitance and the ratio of acceleration time to ejection time (AcT/ET) of RV outflow were used as parameters of RV pulsatile load. The primary endpoints, defined as a composite of cardiac death, HF hospitalization, ventricular arrythmia, and LVAD implantation after the examination, were recorded. RESULTS Noninvasive CPOs were moderately correlated with invasive ones (LV: ρ = 0.787, RV: ρ = 0.568, and p < 0.001 for both). During a median follow-up period of 441 days, 57 cardiovascular events occurred. Lower LV-P/M and higher RV pulsatile load were associated with cardiovascular events; however, RV-CPO was not associated with the outcome. Echocardiographic LV-P/M and AcT/ET showed significant incremental prognostic value over the clinical parameters. CONCLUSIONS RV pulsatile load assessed by AcT/ET may be a predictor of clinical events in HF patients. The combination of echocardiographic LV-P/M and AcT/ET could be a novel noninvasive prognostic indicator in HF patients.
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Affiliation(s)
- Yasuyuki Chiba
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroyuki Iwano
- Division of Cardiology, Teine Keijinkai Hospital, Sapporo, Japan; Diagnostic Center for Sonography, Hokkaido University Hospital, Sapporo, Japan.
| | - Hiroyuki Aoyagi
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yoji Tamaki
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Ko Motoi
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Suguru Ishizaka
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Michito Murayama
- Diagnostic Center for Sonography, Hokkaido University Hospital, Sapporo, Japan
| | - Shinobu Yokoyama
- Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Masahiro Nakabachi
- Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Hisao Nishino
- Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan
| | - Sanae Kaga
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Kiwamu Kamiya
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshiyuki Nagai
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshihisa Anzai
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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7
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Heart Failure Pharmacological Management: Gaps and Current Perspectives. J Clin Med 2023; 12:jcm12031020. [PMID: 36769667 PMCID: PMC9917449 DOI: 10.3390/jcm12031020] [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: 12/15/2022] [Revised: 01/07/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
Proper therapeutic management of patients with heart failure (HF) is a major challenge for cardiologists. Current guidelines indicate to start therapy with angiotensin converting enzyme inhibitors/angiotensin receptor neprilysin inhibitors (ACEi/ARNI), beta blockers (BB), mineralocorticoid receptor antagonists (MRAs) and sodium glucose cotransporter 2 inhibitors (SGLT2i) to reduce the risk of death and hospitalization due to HF. However, certain aspects still need to be defined. Current guidelines propose therapeutic algorithms based on left ventricular ejection fraction values and clinical presentations. However, these last do not always reflect the precise hemodynamic status of patients and pathophysiological mechanisms involved, particularly in the acute setting. Even in the field of chronic management there are still some critical points to discuss. The guidelines do not specify which of the four pillar drugs to start first, nor at what dosage. Some authors suggest starting with SGLT2i and BB, others with ACEi or ARNI, while one of the most recent approach proposes to start with all four drugs together at low doses. The aim of this review is to revise current gaps and perspectives regarding pharmacological therapy management in HF patients, in both the acute and chronic phase.
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8
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Farshadmand J, Lowy Z, Hai O, Zeltser R, Makaryus AN. Utility of Cardiac Power Hemodynamic Measurements in the Evaluation and Risk Stratification of Cardiovascular Conditions. Healthcare (Basel) 2022; 10:2417. [PMID: 36553940 PMCID: PMC9777954 DOI: 10.3390/healthcare10122417] [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: 10/25/2022] [Revised: 11/21/2022] [Accepted: 11/26/2022] [Indexed: 12/02/2022] Open
Abstract
Despite numerous advancements in prevention, diagnosis and treatment, cardiovascular disease has remained the leading cause of mortality globally for the past 20 years. Part of the explanation for this trend is persistent difficulty in determining the severity of cardiac conditions in order to allow for the deployment of prompt therapies. This review seeks to determine the prognostic importance of cardiac power (CP) measurements, including cardiac power output (CPO) and cardiac power index (CPI), in various cardiac pathologies. CP was evaluated across respective disease-state categories which include cardiogenic shock (CS), septic shock, transcatheter aortic valve replacement (TAVR), heart failure (HF), post-myocardial infarction (MI), critical cardiac illness (CCI) and an "other" category. Literature review was undertaken of articles discussing CP in various conditions and this review found utility and prognostic significance in the evaluation of TAVR patients with a significant correlation between one-year mortality and CPI; in HF patients showing CPI and CPO as valuable tools to assess cardiac function in the acute setting; and, additionally, CPO was found to be an essential tool in patients with CCI, as the literature showed that CPO was statistically correlated with mortality. Cardiac power and the derived measures obtained from this relatively easily obtained variable can allow for essential estimations of prognostic outcomes in cardiac patients.
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Affiliation(s)
- Jonathan Farshadmand
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hofstra University, 500 Hofstra Blvd., Hempstead, NY 11549, USA; (J.F.); (Z.L.); (R.Z.)
| | - Zachary Lowy
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hofstra University, 500 Hofstra Blvd., Hempstead, NY 11549, USA; (J.F.); (Z.L.); (R.Z.)
| | - Ofek Hai
- Department of Cardiology, Nassau University Medical Center, Hempstead, NY 11554, USA;
| | - Roman Zeltser
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hofstra University, 500 Hofstra Blvd., Hempstead, NY 11549, USA; (J.F.); (Z.L.); (R.Z.)
- Department of Cardiology, Nassau University Medical Center, Hempstead, NY 11554, USA;
| | - Amgad N. Makaryus
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hofstra University, 500 Hofstra Blvd., Hempstead, NY 11549, USA; (J.F.); (Z.L.); (R.Z.)
- Department of Cardiology, Nassau University Medical Center, Hempstead, NY 11554, USA;
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9
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Hiraiwa H, Okumura T, Murohara T. Amino acid profiling to predict prognosis in patients with heart failure: an expert review. ESC Heart Fail 2022; 10:32-43. [PMID: 36300549 PMCID: PMC9871678 DOI: 10.1002/ehf2.14222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/05/2022] [Accepted: 10/14/2022] [Indexed: 01/27/2023] Open
Abstract
Heart failure is a complex disease with a poor prognosis. A number of widely used prognostic tools have limitations, so efforts to identify novel predictive markers and measures are important. As a metabolomics tool, amino acid profiling has shown promise in predicting heart failure prognosis; however, the evidence has not yet been sufficiently evaluated. We describe the utilization of amino acids in the healthy heart and in heart failure before reviewing the literature on amino acid profiling for prognostic prediction. We expertly interpret the findings and provide suggestions for future research to advance the understanding of the prognostic potential of amino acid profiling in heart failure. Our analysis revealed correlations between amino acid biomarkers and traditional prognostic factors, the additional prognostic value of amino acid biomarkers over traditional prognostic factors, and the successful use of amino acid biomarkers to distinguish heart failure aetiology. Although certain amino acid biomarkers have demonstrated additional prognostic value over traditional measures, such as New York Heart Association functional class, these measures are deeply rooted in clinical practice; thus, amino acid biomarkers may be best placed as additional prognostic tools to improve current risk stratification rather than as surrogate tools. Once the metabolic profiles of different heart failure aetiologies have been clearly delineated, the amino acid biomarkers with the most value in prognostic prediction should be determined. Amino acid profiling could be useful to evaluate the pathophysiology and metabolic status of different heart failure cohorts, distinguish heart failure aetiologies, and improve risk stratification and prognostic prediction.
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Affiliation(s)
- Hiroaki Hiraiwa
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Takahiro Okumura
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Toyoaki Murohara
- Department of CardiologyNagoya University Graduate School of MedicineNagoyaJapan
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10
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Bagate F, Coppens A, Masi P, de Prost N, Carteaux G, Razazi K, Mekontso Dessap A. Cardiac and vascular effects of low-dose steroids during the early phase of septic shock: An echocardiographic study. Front Cardiovasc Med 2022; 9:948231. [PMID: 36225952 PMCID: PMC9549363 DOI: 10.3389/fcvm.2022.948231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/06/2022] [Indexed: 01/25/2023] Open
Abstract
BackgroundLow-dose steroids are known to increase arterial pressure during septic shock through restoration of vasopressor response to norepinephrine. However, their effects on cardiac performance and ventriculo-arterial coupling (VAC) have never been scrutinized during human septic shock. The aim of this study was to perform a comprehensive description of the cardiovascular effects of low-dose steroids using modern echocardiographic tools (including speckle tracking imaging).MethodsThis prospective study was conducted in the intensive care unit (ICU) of a university hospital in France. Consecutive adult patients admitted for septic shock and requiring low-dose steroid therapy were prospectively enrolled within 24 h of septic shock onset. We recorded hemodynamic and echocardiographic data to explore left ventricle (LV) contractility, loading conditions and VAC just before the initiation of low-dose steroids (50 mg intravenous hydrocortisone plus 50 μg enteral fludrocortisone) and 2–4 h after.ResultsFifty patients [65 (55–73) years; 33 men] were enrolled. Arterial pressure, heart rate, almost all LV afterload parameters, and most cardiac contractility parameters significantly improved after steroids. VAC improved with steroid therapy and less patients had uncoupled VAC (> 1.36) after (24%) than before (44%) treatment.ConclusionIn this comprehensive echocardiographic study, we confirmed an improvement of LV afterload after initiation of low-dose steroids. We also observed an increase in LV contractility with improved cardiovascular efficiency (less uncoupling with decreased VAC).
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Affiliation(s)
- François Bagate
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
- *Correspondence: François Bagate,
| | - Alexandre Coppens
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
| | - Paul Masi
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
| | - Nicolas de Prost
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, France
| | - Guillaume Carteaux
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, France
| | - Keyvan Razazi
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
| | - Armand Mekontso Dessap
- AP-HP, CHU Henri Mondor, DHU A-TVB, Service de Médecine Intensive Réanimation, Créteil, France
- Université Paris Est Créteil, Faculté de Médecine, Groupe de Recherche Clinique CARMAS, Créteil, France
- INSERM U955, Institut Mondor de Recherche Biomédicale, Créteil, France
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11
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Chen C, Zhao J, Xue R, Liu X, Zhu W, Ye M. Prognostic significance of resting cardiac power to left ventricular mass and E/e’ ratio in heart failure with preserved ejection fraction. Front Cardiovasc Med 2022; 9:961837. [PMID: 36061551 PMCID: PMC9433697 DOI: 10.3389/fcvm.2022.961837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/12/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundCardiac power-to-left ventricular mass (power/mass) is an index reflecting the muscular hydraulic pump capability of the heart, and the E/e’ ratio is a specific indicator for identifying increased left ventricular filling pressure. Limited data exist regarding the prognostic value of incorporating power/mass and E/e’ ratio in heart failure with preserved ejection fraction (HFpEF).Materials and methodsIn total, 475 patients with HFpEF from the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist (TOPCAT) trial with complete baseline echocardiography data were included in our analysis. Patients were categorized into four groups according to power/mass and E/e’ ratio. The risk of outcomes was examined using Cox proportional hazards models and competing risk models.ResultsPatients with low power/mass and high E/e’ were more likely to be males (60.5%), with higher waist circumference, and had a higher prevalence of diabetes (52.1%), atrial fibrillation (50.4%), and lower estimated glomerular filtration rate (eGFR). Combined resting power/mass and E/e’ have graded correlations with left ventricular (LV) dysfunction and clinical outcomes in patients with HFpEF. After multivariable adjustments, an integrative approach combining power/mass and E/e’ remained to be a powerful prognostic predictor, with the highest HRs of clinical outcomes observed in patients with low power/mass and high E/e’ (all-cause mortality: HR 3.45; 95% CI: 1.69–7.05; P = 0.001; hospitalization for heart failure: HR 3.27; 95% CI: 1.60–6.67; P = 0.001; and primary endpoint: HR 3.07; 95% CI: 1.73–5.42; P < 0.001).ConclusionIn patients with HFpEF, an echo-derived integrated approach incorporating resting power/mass and E/e’ ratio remained to be a powerful prognosis predictor and may be useful to risk-stratify patients with this heterogeneous syndrome.Clinical Trial Registration[https://clinicaltrials.gov], identifier [NCT00094302].
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Affiliation(s)
- Cong Chen
- Department of Cardiology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jie Zhao
- Department of Cardiovascular Medicine, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Ruicong Xue
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiao Liu
- Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wengen Zhu
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Wengen Zhu,
| | - Min Ye
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Min Ye,
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12
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Abstract
Despite the number of available methods to predict prognosis in patients with heart failure, prognosis remains poor, likely because of marked patient heterogeneity and varied heart failure etiologies. Thus, identification of novel prognostic indicators to stratify risk in patients with heart failure is of paramount importance. The spleen is emerging as a potential novel prognostic indicator for heart failure. In this article, we provide an overview of the current prognostic tools used for heart failure. We then introduce the spleen as a potential novel prognostic indicator, before outlining the structure and function of the spleen and introducing the concept of the cardiosplenic axis. This is followed by a focused discussion on the function of the spleen in the immune response and in hemodynamics, as well as a review of what is known about the usefulness of the spleen as an indicator of heart failure. Expert insight into the most effective spleen-related measurement indices for the prognostication of patients with heart failure is provided, and suggestions on how these could be measured in clinical practice are considered. In future, studies in humans will be required to draw definitive links between specific splenic measurements and different heart failure manifestations, as well as to determine whether splenic prognostic measurements differ between heart failure classes and etiologies. These contributions will provide a step forward in our understanding of the usefulness of the spleen as a prognostic predictor in heart failure.
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13
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Deis T, Rossing K, Gustafsson F. Aortic Pulsatility Index: A New Haemodynamic Measure with Prognostic Value in Advanced Heart Failure. Card Fail Rev 2022; 8:e18. [PMID: 35620383 PMCID: PMC9127634 DOI: 10.15420/cfr.2022.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 02/27/2022] [Indexed: 11/04/2022] Open
Abstract
Aim: To test if the newly described haemodynamic variable, aortic pulsatility index (API), predicts long-term prognosis in advanced heart failure (HF). Methods: A single-centre study on 453 HF patients (median age: 51 years; left ventricular ejection fraction [LVEF]: 19% ± 9%) referred for right heart catheterisation. API was calculated as pulse pressure/pulmonary capillary wedge pressure. Results: Log(API) correlated significantly with central venous pressure (CVP; p<0.001) and cardiac index (p<0.001) in univariable regression analysis. CVP remained associated with log(API) in a multivariable analysis including cardiac index, heart rate, log(NT-proBNP [N-terminal proB-type natriuretic peptide]), LVEF, New York Heart Association (NYHA) class III or IV and sex (p=0.01). In univariable Cox models, log(API) was a significant predictor of freedom from the combined endpoint of death, left ventricular assist device implantation, total artificial heart implantation or heart transplantation (HR 0.33; (95% CI [0.22–0.49]); p<0.001) and all-cause mortality (HR 0.56 (95% CI [0.35–0.90]); p=0.015). After adjusting for age, sex, NYHA class III or IV and estimated glomerular filtration rate in multivariable Cox models, log(API) remained a significant predictor for the combined endpoint (HR 0.33; 95% CI [0.20–0.56]; p<0.001) and all-cause mortality (HR 0.49; 95% CI [0.26–0.96]; p=0.034). Conclusion: API was strongly associated with right-sided filling pressure and independently predicted freedom from the combined endpoint and all-cause mortality.
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Affiliation(s)
- Tania Deis
- Department of Cardiology, Rigshospitalet, Copenhagen, Denmark
| | - Kasper Rossing
- Department of Cardiology, Rigshospitalet, Copenhagen, Denmark
| | - Finn Gustafsson
- Department of Cardiology, Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Denmark
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14
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Antohi EL, Chioncel O, Mihaileanu S. Overcoming the Limits of Ejection Fraction and Ventricular-Arterial Coupling in Heart Failure. Front Cardiovasc Med 2022; 8:750965. [PMID: 35127846 PMCID: PMC8813963 DOI: 10.3389/fcvm.2021.750965] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 12/21/2021] [Indexed: 12/25/2022] Open
Abstract
Left ventricular ejection fraction (LVEF) and ventricular-arterial coupling (VAC) [VAC = Ea/Ees; Ea: effective arterial elastance; Ees: left ventricle (LV) elastance] are both dimensionless ratios with important limitations, especially in heart failure setting. The LVEF to VAC relationship is a divergent non-linear function, having a point of intersection at the specific value of 0.62, where V0 = 0 ml (V0: the theoretical extrapolated value of the volume-axis intercept at end-systolic pressure 0 mmHg). For the dilated LV, both LVEF and VAC are highly dependent on V0 which is inconclusive when derived from single-beat Ees formulas. VAC simplification should be avoided. Revisiting the relationship between systolic time intervals (STI), pressure, and volumes could provide simple-to-use guiding formulas, affordable for daily clinical practice. We have analyzed by echocardiography the hemodynamics of 21 patients with severe symptomatic heart failure with reduced ejection (HFrEF) compared to 12 asymptomatic patients (at risk of heart failure with mild structural disease). The groups were unequivocally separated by ‘classic’ measures (LVEF, LV end-systolic volume (ESV), LV mass, STI). Chen's Ees formula was weakly correlated with LVEF and indexed ESV (ESVi) but better correlated to the pre-ejection period (PEP); PEP/total ejection time (PEP/TET); systolic blood pressure/PEP (SBP/PEP) (P < 0.001). Combining the predictability of the LVEF to the determinant role of SBP/PEP on the Ees variations, we obtained: (SBP*LVEF)/PEP mm Hg/ms, with an improved R2 value (R2 = 0.848; P < 0.001). The strongest correlations to VAC were for LVEF (R = −0.849; R2 = 0.722) and PEP/TET (R = 0.925; R2 = 0.857). By multiple regression, the VAC was strongly predicted (N = 33): (R = 0.975; R2 = 0.95): VAC = 0.553–0.009*LVEF + 3.463*PEP/TET, and natural logarithm: Ln (VAC) = 0.147–1.4563*DBP/SBP*0.9–0.010*LVEF + 4.207*PEP/TET (R = 0.987; R2 = 0.975; P = 0) demonstrating its exclusive determinants: LVEF, PEP/TET, and DBP/SBP. Considering Ea as a known value, the VAC-derived Ees formula: Ees_d ≈ Ea/(0.553–0.009*LVEF+3.463*PEP/TET) was strongly correlated to Chen's Ees formula (R = 0.973; R2 = 0.947) being based on SBP, ESV, LVEF, and PEP/TET and no exponential power. Thus, the new index supports our hypothesis, in the limited sample of patients with HFrEF. Indices like SBP/PEP, (SBP*LVEF)/PEP, PEP/TET, and DBP/SBP deserve further experiments, underlining the major role of the forgotten STI.
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Affiliation(s)
- Elena-Laura Antohi
- Emergency Institute for Cardiovascular Diseases “Prof. Dr. C.C. Iliescu”, Bucharest, Romania
- “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- *Correspondence: Elena-Laura Antohi
| | - Ovidiu Chioncel
- Emergency Institute for Cardiovascular Diseases “Prof. Dr. C.C. Iliescu”, Bucharest, Romania
- “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
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15
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Langeland H, Bergum D, Løberg M, Bjørnstad K, Skaug TR, Nordseth T, Klepstad P, Skjærvold NK. Characteristics of circulatory failure after out-of-hospital cardiac arrest: a prospective cohort study. Open Heart 2022; 9:openhrt-2021-001890. [PMID: 35046124 PMCID: PMC8772457 DOI: 10.1136/openhrt-2021-001890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/31/2021] [Indexed: 12/02/2022] Open
Abstract
Background Circulatory failure after out-of-hospital cardiac arrest (OHCA) as part of the postcardiac arrest syndrome (PCAS) is believed to be caused by an initial myocardial depression that later subsides into a superimposed vasodilatation. However, the relative contribution of myocardial dysfunction and systemic inflammation has not been established. Our objective was to describe the macrocirculatory and microcirculatory failure in PCAS in more detail. Methods We included 42 comatose patients after OHCA where circulatory variables were invasively monitored from admission until day 5. We measured the development in cardiac power output (CPO), stroke work (SW), aortic elastance, microcirculatory metabolism, inflammatory and cardiac biomarkers and need for vasoactive medications. We used survival analysis and Cox regression to assess time to norepinephrine discontinuation and negative fluid balance, stratified by inflammatory and cardiac biomarkers. Results CPO, SW and oxygen delivery increased during the first 48 hours. Although the estimated afterload fell, the blood pressure was kept above 65 mmHg with a diminishing need for norepinephrine, indicating a gradually re-established macrocirculatory homoeostasis. Time to norepinephrine discontinuation was longer for patients with higher pro-brain natriuretic peptide concentration (HR 0.45, 95% CI 0.21 to 0.96), while inflammatory biomarkers and other cardiac biomarkers did not predict the duration of vasoactive pressure support. Markers of microcirculatory distress, such as lactate and venous-to-arterial carbon dioxide difference, were normalised within 24 hours. Conclusion The circulatory failure was initially characterised by reduced CPO and SW, however, microcirculatory and macrocirculatory homoeostasis was restored within 48 hours. We found that biomarkers indicating acute heart failure, and not inflammation, predicted longer circulatory support with norepinephrine. Taken together, this indicates an early and resolving, rather than a late and emerging vasodilatation. Trial registration NCT02648061.
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Affiliation(s)
- Halvor Langeland
- Department of Anesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway .,Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Daniel Bergum
- Department of Anesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway
| | - Magnus Løberg
- Clinical Effectiveness Research Group, University of Oslo, Oslo, Norway.,Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
| | - Knut Bjørnstad
- Department of Cardiology, St. Olav's University Hospital, Trondheim, Norway
| | - Thomas R Skaug
- Department of Cardiology, St. Olav's University Hospital, Trondheim, Norway
| | - Trond Nordseth
- Department of Anesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway.,Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Pål Klepstad
- Department of Anesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway.,Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Nils Kristian Skjærvold
- Department of Anesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway.,Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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16
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Morici N, Marini C, Sacco A, Tavazzi G, Saia F, Palazzini M, Oliva F, De Ferrari GM, Colombo PC, Kapur NK, Garan AR, Pappalardo F. Intra-aortic balloon pump for acute-on-chronic heart failure complicated by cardiogenic shock. J Card Fail 2021; 28:1202-1216. [PMID: 34774745 DOI: 10.1016/j.cardfail.2021.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 12/22/2022]
Abstract
The Intra-aortic balloon pump (IABP) is widely implanted as temporary mechanical circulatory support for cardiogenic shock (CS). However, its use is declining following the results of the IABP-SHOCK II trial, which failed to show a clinical benefit of IABP in acute coronary syndrome (ACS) related CS. Acute-on-chronic heart failure has become an increasingly recognized, distinct etiology of CS (HF-CS). The pathophysiology of HF-CS differs from ACS-CS, as it typically represents the progression from a state of congestion (with relatively preserved cardiac output) to a low output state with hypoperfusion. The IABP is a "volume displacement pump" that promotes forward flow from a high-capacitance reservoir to low-capacitance vessels, improving peripheral perfusion and decreasing left ventricular afterload in the setting of high filling pressures. The IABP can improve ventricular-vascular coupling and, therefore, myocardial energetics. Additionally, many HF-CS patients are candidates for cardiac replacement therapies (left ventricular assist device or heart transplantation), and, therefore, may benefit from a "bridge" strategy that stabilizes the hemodynamics and end-organ function in preparation for more durable therapies. Notably, the new United Network for Organ Sharing donor heart allocation system has recently prioritized patients on IABP support. This review describes the role of IABP for the treatment of HF-CS. It also briefly discusses new strategies for vascular access as well as a fully implantable versions for a longer duration of support.
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Affiliation(s)
- Nuccia Morici
- Cardiac Intensive Care Unit and De Gasperis Cardio Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy..
| | - Claudia Marini
- S.C. Cardiologia, Polo San Carlo Borromeo, ASST Santi Paolo e Carlo, Milano; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Alice Sacco
- Cardiac Intensive Care Unit and De Gasperis Cardio Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Guido Tavazzi
- Department of Clinical-Surgical, Diagnostic and Paediatric Sciences, Unit of Anaesthesia and Intensive Care, University of Pavia Italy; Anesthesia and Intensive Care, Fondazione Policlinico San Matteo Hospital IRCCS, Anestesia e Rianimazione I, Pavia, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Francesco Saia
- Cardiology Unit, Cardio-Thoraco-Vascular Department, University Hospital of Bologna, Policlinico S. Orsola-Malpighi, Bologna, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Matteo Palazzini
- Cardiac Intensive Care Unit and De Gasperis Cardio Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; School of Medicine and Surgery, Università degli Studi Milano-Bicocca, Milan, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Fabrizio Oliva
- Cardiac Intensive Care Unit and De Gasperis Cardio Center, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Gaetano Maria De Ferrari
- Dept of Cardiology OU Città della Salute e della Scienza di Torino, Dept of Medical Sciences, University of Torino, Torino, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Paolo C Colombo
- Division of Cardiology, Department of Medicine, Columbia University Medical Center-New York Presbyterian, NewYork, USA; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Navin K Kapur
- Division of Cardiology, Department of Medicine, Tufts Medical Center, Boston, USA; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Arthur Reshad Garan
- Division of Cardiology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Federico Pappalardo
- School of Medicine and Surgery, Università degli Studi Milano-Bicocca, Milan, Italy; Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
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Morimoto R, Mizutani T, Araki T, Oishi H, Kimura Y, Kazama S, Shibata N, Kuwayama T, Hiraiwa H, Kondo T, Furusawa K, Okumura T, Murohara T. Prognostic value of resting cardiac power index depends on mean arterial pressure in dilated cardiomyopathy. ESC Heart Fail 2021; 8:3206-3213. [PMID: 34042320 PMCID: PMC8318402 DOI: 10.1002/ehf2.13446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/28/2021] [Accepted: 05/16/2021] [Indexed: 11/07/2022] Open
Abstract
AIMS In recent decades, haemodynamic parameters have been estimated for risk stratification and determining treatment strategies for patients with non-ischaemic dilated cardiomyopathy (DCM). In various invasive procedures, the cardiac pumping capability is defined as cardiac power output (CPO), which is calculated by multiplying cardiac output by the mean arterial pressure. Lower CPO values in advanced heart failure predict adverse outcomes. However, few studies discuss the prognostic value of CPO in mild-to-moderate phase patients. This study aimed to determine the value of the cardiac power index (CPI) obtained from the resting CPO for predicting the prognosis of patients with New York Heart Association Functional Class II or III DCM. METHODS AND RESULTS From March 2000 to January 2020, a total of 623 cardiomyopathy patients were evaluated for haemodynamic parameters. Patients with secondary cardiomyopathy, ischaemic cardiomyopathy, valvular heart disease, and Class IV cardiomyopathy were excluded. A total of 176 DCM patients fulfilled the criteria for inclusion. Patients were 51.7 ± 12.5 years old (mean ± standard deviation) with a mean left ventricular ejection fraction of 32.1 ± 9.2%. The patients were divided into two groups by their median CPI (CPI < 0.52, low-CPI; CPI ≥ 0.52, high-CPI). No significant differences were found in the left ventricular end-diastolic diameter, left ventricular ejection fraction, or pulmonary arterial wedge pressure between the groups. The probability of cardiac event-free survival was significantly lower for low-CPI than for high-CPI groups by Kaplan-Meier analysis (P = 0.012), even with no significant difference between the high and low cardiac index groups (P = 0.069). Furthermore, Cox proportional hazards regression analysis revealed that, in addition to the CPI, the systolic and mean arterial pressure involved in CPI calculation were independent predictors of cardiac events. Indeed, among these factors, mean arterial pressure had the strongest prognostic ability. CONCLUSIONS Although CPI is effective for stratifying DCM and predicting cardiac events in patients with Class II/III DCM, this prognostic value depends on mean arterial pressure.
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Affiliation(s)
- Ryota Morimoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Takashi Mizutani
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Takashi Araki
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Hideo Oishi
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Yuki Kimura
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Shingo Kazama
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Naoki Shibata
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Tasuku Kuwayama
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Hiroaki Hiraiwa
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Toru Kondo
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Kenji Furusawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Takahiro Okumura
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
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Tavares-Silva M, Saraiva F, Pinto R, Amorim S, Silva JC, Leite-Moreira AF, Maciel MJ, Lourenço AP. Comparison of levosimendan, NO, and inhaled iloprost for pulmonary hypertension reversibility assessment in heart transplant candidates. ESC Heart Fail 2021; 8:908-917. [PMID: 33621427 PMCID: PMC8006659 DOI: 10.1002/ehf2.13168] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/17/2020] [Accepted: 11/24/2020] [Indexed: 12/28/2022] Open
Abstract
Aims Assessing reversibility of pulmonary vascular changes through vasoreactivity testing (VRT) optimizes end‐stage heart failure patient selection for heart transplant. All efforts should be made to unload the left ventricle and reduce pulmonary vascular resistance to effectively exclude irreversible pulmonary hypertension. Methods and results We reviewed our centre's cardiac transplant registry database (2009–2017) for VRT and compared haemodynamic responses with 40 ppm inhaled NO (n = 14), 14–17 μg inhaled iloprost (n = 7), and 24 h 0.1 μg/kg/min intravenous levosimendan (n = 14). Response to levosimendan was assessed by repeat right heart catheterization within 72 h. Baseline clinical and haemodynamic features were similar between groups. VRT was well tolerated in all patients. All drugs effectively reduced pulmonary artery pressures and transpulmonary gradient while increasing cardiac index, although levosimendan had a greater impact on cardiac index increase (P = 0.036). Levosimendan was the only drug that reduced pulmonary artery wedge pressure (P = 0.004) and central venous pressures (P < 0.001) and increased both left and right ventricular stroke work indexes (P = 0.020 and P = 0.042, respectively) and cardiac power index (P < 0.001) compared with NO and iloprost. Right ventricular end‐diastolic pressures and central venous pressure were only decreased by levosimendan. The rate of positive responses (≥10 mmHg decrease or final mean pulmonary artery pressure ≤40 mmHg with increased/unaltered cardiac index) was lower with inhaled iloprost (14%) than with either levosimendan or NO (71% and 64%, respectively; P < 0.05). Conclusions Levosimendan may be a safe and effective alternative for pulmonary hypertension reversibility assessment or a valuable pre‐test medical optimization tool in end‐stage heart failure patient assessment for heart transplantation offering extended haemodynamic benefits. Whether it increases the rate of positive responses or allows a better selection of candidates to heart transplantation remains to be established.
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Affiliation(s)
- Marta Tavares-Silva
- Department of Cardiology, São João Hospital Centre, E.P.E., Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal.,Department of Surgery and Physiology, Cardiovascular R&D Centre, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Francisca Saraiva
- Department of Surgery and Physiology, Cardiovascular R&D Centre, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Roberto Pinto
- Department of Cardiology, São João Hospital Centre, E.P.E., Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal
| | - Sandra Amorim
- Department of Cardiology, São João Hospital Centre, E.P.E., Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal
| | - João Carlos Silva
- Department of Cardiology, São João Hospital Centre, E.P.E., Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal
| | - Adelino F Leite-Moreira
- Department of Surgery and Physiology, Cardiovascular R&D Centre, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Cardiothoracic Surgery, São João Hospital Centre, E.P.E., Porto, Portugal
| | - Maria Júlia Maciel
- Department of Cardiology, São João Hospital Centre, E.P.E., Alameda Prof. Hernâni Monteiro, Porto, 4200-319, Portugal.,Department of Surgery and Physiology, Cardiovascular R&D Centre, Faculty of Medicine, University of Porto, Porto, Portugal
| | - André P Lourenço
- Department of Surgery and Physiology, Cardiovascular R&D Centre, Faculty of Medicine, University of Porto, Porto, Portugal.,Department of Anaesthesiology, São João Hospital Centre, E.P.E., Porto, Portugal
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Pugliese NR, Fabiani I, Mandoli GE, Guarini G, Galeotti GG, Miccoli M, Lombardo A, Simioniuc A, Bigalli G, Pedrinelli R, Dini FL. Echo-derived peak cardiac power output-to-left ventricular mass with cardiopulmonary exercise testing predicts outcome in patients with heart failure and depressed systolic function. Eur Heart J Cardiovasc Imaging 2020; 20:700-708. [PMID: 30476026 DOI: 10.1093/ehjci/jey172] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 09/26/2018] [Accepted: 10/18/2018] [Indexed: 12/20/2022] Open
Abstract
AIMS Peak cardiac power output-to-mass (CPOM) represents a measure of the rate at which cardiac work is delivered respect to the potential energy stored in left ventricular (LV) mass. We studied the value of CPOM and cardiopulmonary exercise test (CPET) in risk stratification of patients with heart failure (HF). MATERIALS AND RESULTS We studied 159 patients with chronic HF (mean rest LV ejection fraction 30%) undergoing CPET and exercise stress echocardiography. CPOM was calculated as the product of a constant (K = 2.22 × 10-1) with cardiac output (CO) and the mean blood pressure (MBP), divided by LV mass (M), and expressed in the unit of W/100 g: CPOM = [K × CO (L/min) × MBP (mmHg)]/LVM(g). Patients were followed-up for the primary endpoint, including all-cause death, ventricular assist device implantation, and heart transplantation, and the secondary endpoint that comprised hospitalization for HF. In multivariate Cox regression analyses, peak CPOM was selected as the most powerful independent predictor of both primary and secondary endpoint [hazard ratio (HR) 0.004, 95% confidence interval (CI) 0.004-0.3; P = 0.002 and HR 0.09, 95% CI 0.02-0.55; P = 0.009]. Sixty-month survival free from the combined endpoint was 85% in those exhibiting oxygen consumption (VO2) > 14 mL/min/kg and peak CPOM > 0.6 W/100 g. Peak VO2 ≤ 14 mL/min/kg provided incremental prognostic value over demographic and clinical variables, brain natriuretic peptide, and resting echocardiographic parameters (χ2 from 58 to 64; P = 0.04), that was further increased by peak CPOM ≤ 0.6 W/100 g (χ2 77; P < 0.001). CONCLUSION Peak CPOM and peak VO2 showed independent and incremental prognostic values in patients with chronic HF.
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Affiliation(s)
- Nicola Riccardo Pugliese
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Iacopo Fabiani
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Giulia Elena Mandoli
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Giacinta Guarini
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Gian Giacomo Galeotti
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Mario Miccoli
- Department of Clinical and Experimental Medicine, University of Pisa, Via Paradisa, 2, Pisa, Italy
| | - Alberto Lombardo
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Anca Simioniuc
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Giovanni Bigalli
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Roberto Pedrinelli
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
| | - Frank L Dini
- Cardiac, Thoracic and Vascular Department, University of Pisa, Azienda Universitaria-Ospedaliera Pisana, Via Paradisa, 2, Pisa, Italy
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Tannvik TD, Rimehaug AE, Skjærvold NK, Kirkeby‐Garstad I. Post cardiac surgery stunning reduces stroke work, but leaves cardiac power output unchanged in patients with normal ejection fraction. Physiol Rep 2018; 6:e13781. [PMID: 29998610 PMCID: PMC6041697 DOI: 10.14814/phy2.13781] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/25/2018] [Accepted: 06/06/2018] [Indexed: 12/17/2022] Open
Abstract
This study assesses positional changes in cardiac power output and stroke work compared with classic hemodynamic variables, measured before and after elective coronary artery bypass graft surgery. The hypothesis was that cardiac power output was altered in relation to cardiac stunning. The study is a retrospective analysis of data from two previous studies performed in a tertiary care university hospital. Thirty-six patients scheduled for elective coronary artery bypass graft surgery, with relatively preserved left ventricular function, were included. A pulmonary artery catheter and a radial artery catheter were placed preoperatively. Cardiac power output and stroke work were calculated through thermodilution both supine and standing prior to induction of anesthesia and again day one postoperatively. Virtually all systemic hemodynamic parameters changed significantly from pre- to postoperatively, and from supine to standing. Cardiac power output was maintained at 0.9-1.0 (±0.3) W both pre- and postoperatively and from supine to standing on both days. Stroke work fell from pre- to postoperatively from 1.1 to 0.8 J (P < 0.001), there was a significant fall in stroke work with positional change preoperatively from 1.1 to 0.9 J (P < 0.001). Postoperatively the stroke work remained at 0.8 J despite positional change. Cardiac power output was the only systemic hemodynamic variable which remained unaltered during all changes. Stroke work appears to be a more sensitive marker for temporary cardiovascular dysfunction than cardiac power output. Further studies should explore the relationship between stroke work and cardiac performance and whether cardiac power output is an autoregulated intrinsic physiological parameter.
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Affiliation(s)
- Tomas D. Tannvik
- Department of Anaesthesia and Intensive CareSt Olav's HospitalTrondheim University HospitalTrondheimNorway
- Faculty of Medicine and Health SciencesInstitute of Circulation and Medical ImagingNorges Teknisk‐Naturvitenskapelige UniversitetTrondheimNorway
| | - Audun E. Rimehaug
- Department of Anaesthesia and Intensive CareSt Olav's HospitalTrondheim University HospitalTrondheimNorway
| | - Nils K. Skjærvold
- Department of Anaesthesia and Intensive CareSt Olav's HospitalTrondheim University HospitalTrondheimNorway
- Faculty of Medicine and Health SciencesInstitute of Circulation and Medical ImagingNorges Teknisk‐Naturvitenskapelige UniversitetTrondheimNorway
| | - Idar Kirkeby‐Garstad
- Department of Anaesthesia and Intensive CareSt Olav's HospitalTrondheim University HospitalTrondheimNorway
- Faculty of Medicine and Health SciencesInstitute of Circulation and Medical ImagingNorges Teknisk‐Naturvitenskapelige UniversitetTrondheimNorway
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