Peak exercise cardiac power output; a direct indicator of cardiac function strongly predictive of prognosis in chronic heart failure

2001 ◽  
Vol 22 (16) ◽  
pp. 1496-1503 ◽  
Author(s):  
S Williams
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Cardiac Function ◽  
Power Output ◽  
Peak Exercise ◽  
Cardiac Power

scholarly journals Peak Cardiac Power Output, Measured Noninvasively, Is a Powerful Predictor of Outcome in Chronic Heart Failure

2009 ◽  
Vol 2 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Chim C. Lang ◽  
Paula Karlin ◽  
Jennifer Haythe ◽  
Tiong K. Lim ◽  
Donna M. Mancini
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Power Output ◽  
Powerful Predictor ◽  
Cardiac Power

scholarly journals The Prognostic Value of Peak Cardiac Power Output in Chinese Patients with Chronic Heart Failure

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0147423 ◽  
Author(s):  
Yuqin Shen ◽  
Haoming Song ◽  
Wenlin Ma ◽  
Zhu Gong ◽  
Yi Ni ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Power Output ◽  
Prognostic Value ◽  
Chinese Patients ◽  
Cardiac Power

The correlation of cardiac power output to exercise capacity in chronic heart failure

1990 ◽  
Vol 61 (1-2) ◽  
pp. 112-118 ◽  
Author(s):  
Robert J. I. Bain ◽  
L. Bun Tan ◽  
R. Gordon Murray ◽  
Michael K. Davies ◽  
William A. Littler
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Exercise Capacity ◽  
Power Output ◽  
Cardiac Power

Reproducibility of cardiac power output and other cardiopulmonary exercise indices in patients with chronic heart failure

2011 ◽  
Vol 122 (4) ◽  
pp. 175-181 ◽  
Author(s):  
Djordje G. Jakovljevic ◽  
Petar M. Seferovic ◽  
David Nunan ◽  
Gay Donovan ◽  
Michael I. Trenell ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cardiac Output ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Power Output ◽  
Respiratory Exchange Ratio ◽  
Maximal Exercise ◽  
Peak Oxygen Consumption ◽  
Cardiopulmonary Exercise ◽  
Cardiac Power

Cardiac power output is a direct measure of overall cardiac function that integrates both flow- and pressure-generating capacities of the heart. The present study assessed the reproducibility of cardiac power output and other more commonly reported cardiopulmonary exercise variables in patients with chronic heart failure. Metabolic, ventilatory and non-invasive (inert gas re-breathing) central haemodynamic measurements were undertaken at rest and near-maximal exercise of the modified Bruce protocol in 19 patients with stable chronic heart failure. The same procedure was repeated 7 days later to assess reproducibility. Cardiac power output was calculated as the product of cardiac output and mean arterial pressure. Resting central haemodynamic variables demonstrate low CV (coefficient of variation) (ranging from 3.4% for cardiac output and 5.6% for heart rate). The CV for resting metabolic and ventilatory measurements ranged from 8.2% for respiratory exchange ratio and 14.2% for absolute values of oxygen consumption. The CV of anaerobic threshold, peak oxygen consumption, carbon dioxide production and respiratory exchange ratio ranged from 3.8% (for anaerobic threshold) to 6.4% (for relative peak oxygen consumption), with minute ventilation having a CV of 11.1%. Near-maximal exercise cardiac power output and cardiac output had CVs of 4.1 and 2.2%, respectively. Cardiac power output demonstrates good reproducibility suggesting that there is no need for performing more than one cardiopulmonary exercise test. As a direct measure of cardiac function (dysfunction) and an excellent prognostic marker, it is strongly advised in the assessment of patients with chronic heart failure undergoing cardiopulmonary exercise testing.

Cardiac function after CPAP therapy in patients with chronic heart failure and sleep apnea: A multicenter study

2008 ◽  
Vol 9 (6) ◽  
pp. 660-666 ◽  
Author(s):  
Carlos J. Egea ◽  
Felipe Aizpuru ◽  
Jose A. Pinto ◽  
Jose M. Ayuela ◽  
Eugeni Ballester ◽  
...  
Keyword(s):  
Heart Failure ◽  
Sleep Apnea ◽  
Chronic Heart Failure ◽  
Cardiac Function ◽  
Multicenter Study ◽  
Cpap Therapy
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