scholarly journals A Method for Predicting the Main Indicators of Cardiopulmonary Stress Testing for Patients with Chronic Heart Failure

2020 ◽  
Vol 23 (1) ◽  
pp. 96-104
Author(s):  
A. S. Krasichkov ◽  
E. Mbazumutima ◽  
F. Shikama ◽  
E. M. Nifontov
Keyword(s):  
Heart Failure ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Stress Testing ◽  
Stress Test ◽  
Significant Risk ◽  
Exercise Stress Test ◽  
Exercise Stress ◽  
Peak Oxygen Consumption ◽  
Prognostic Information

Introduction. Cardiopulmonary stress test provides significant diagnostic and prognostic information of the condition of patients with cardiovascular and pulmonary diseases. There is a serious problem, that final phase of stress testing is a physically difficult exercise for a person. There is a significant risk of occurrence and development of pathological conditions of the patient's cardiovascular system. One of the solutions is the development of methods for assessing the biological parameters of the patients at the end of a load protocol based on data from the initial stages of the test.Aim. Development of a method for finding an estimate of the maximum heart rate (HR) and of the peak oxygen consumption (OC) for the patients with chronic heart failure at the end of a cardiorespiratory exercise stress test, based on the results of the study obtained at the first initial stages of the test.Materials and methods. For the study, 149 anonymized records of rhythmograms and data of changes in the oxygen consumption of the patients with chronic heart failure were used. The patients underwent a cardiopulmonary stress test by a bicycle ergometer using step-by-step load protocol (the load power increase at each stage was 10 W, the duration of the load stage was 1 min)Results. Based on the analysis of the data obtained, a method for assessing the peak values of HR and of PC of the patients with chronic heart failure was developed.Conclusion. The relative error of the proposed estimate of the HR peak in most cases was no more than 10 %, which allows it to be used for practical purposes. It was established that when performing 70 % of the stress protocol, the error of the proposed estimate of the OC peak in most cases did not exceed 20 %. More research is needed to improve the accuracy of the assessment for using in medical applications aimed to the modernization of methods and equipment for stress testing of the patients.

scholarly journals Effects of lacidipine on peak oxygen consumption, neurohormones and invasive haemodynamics in patients with mild to moderate chronic heart failure.

Heart ◽  
1996 ◽  
Vol 75 (2) ◽  
pp. 159-164 ◽  
Author(s):  
R. J. de Vries ◽  
P. H. Dunselman ◽  
U. G. Chin Kon Sung ◽  
D. J. van Veldhuisen ◽  
H. M. Corbeij ◽  
...  
Keyword(s):  
Heart Failure ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Peak Oxygen Consumption

5 m Walking Time is Well Correlated With Peak Oxygen Consumption (Peak VO2) in Chronic Heart Failure Patients

2016 ◽  
Vol 22 (9) ◽  
pp. S192
Author(s):  
Hirokazu Kondo ◽  
Yodo Tamaki ◽  
Sosuke Goto ◽  
Keiko Ichikawa ◽  
Atsushi Okamoto ◽  
...  
Keyword(s):  
Heart Failure ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Peak Oxygen Consumption ◽  
Heart Failure Patients ◽  
Peak Vo2 ◽  
Walking Time

Combination of B-type natriuretic peptide and peak oxygen consumption improves risk stratification in outpatients with chronic heart failure

2003 ◽  
Vol 146 (4) ◽  
pp. 729-735 ◽  
Author(s):  
Richard Isnard ◽  
Françoise Pousset ◽  
Olga Chafirovskaïa ◽  
Alain Carayon ◽  
Jean Sébastien Hulot ◽  
...  
Keyword(s):  
Heart Failure ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Risk Stratification ◽  
Natriuretic Peptide ◽  
Peak Oxygen Consumption

scholarly journals Lean tissue-adjusted versus body weight-adjusted peak oxygen consumption and mortality prediction in chronic heart failure

2002 ◽  
Vol 39 ◽  
pp. 148
Author(s):  
Mariantonietta Cicoira ◽  
Costantinos Davos ◽  
Wolfram Doehner ◽  
Lorenzo Franceschini ◽  
Luisa Zanolla ◽  
...  
Keyword(s):  
Heart Failure ◽  
Body Weight ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Mortality Prediction ◽  
Peak Oxygen Consumption ◽  
Lean Tissue

The prognostic significance of improvement in exercise capacity in heart failure patients who participate in cardiac rehabilitation programme

2018 ◽  
Vol 25 (4) ◽  
pp. 354-361 ◽  
Author(s):  
Avi Sabbag ◽  
Israel Mazin ◽  
David Rott ◽  
Ilan Hay ◽  
Nelly Gang ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cardiac Rehabilitation ◽  
Stress Test ◽  
Exercise Stress Test ◽  
Cardiovascular Fitness ◽  
Rehabilitation Programme ◽  
Exercise Stress ◽  
Cardiac Rehabilitation Programme ◽  
Heart Failure Patients ◽  
Baseline Fitness

Introduction There are limited contemporary data regarding the association between improvement in cardiovascular fitness in heart failure patients who participate in a cardiac rehabilitation programme and the risk of subsequent hospitalisations. Methods The study population comprised 421 patients with heart failure who participated in our cardiac rehabilitation programme between the years 2009 and 2016. All were evaluated by a standard exercise stress test before initiation, and underwent a second exercise stress test on completion of 3 ± 1 months of training. Participants were dichotomised by fitness level at baseline, according to the percentage of predicted age and sex norms achieved. Each group was further divided according to its degree of functional improvement, between the baseline and the follow-up exercise stress test. Major improvement was defined as improvement above the median value in each group. The combined primary endpoint was cardiac hospitalisation or all-cause mortality. Results A total of 211 (50%) patients had low baseline fitness (<73% (median)) for age and sex-predicted metabolic equivalents of task value. Compared to patients with higher fitness, those with a low baseline fitness were more commonly smokers, had diabetes and were obese ( P < 0.05 for all). Multivariable Cox proportional hazard regression analysis showed that, independent of baseline capacity, an improvement of 5% of predicted fitness was associated with a corresponding 10% reduced risk of cardiac hospitalisation or all-cause mortality ( P < 0.001). Conclusion In heart failure patients participating in a cardiac rehabilitation programme, improved cardiovascular fitness is associated with reduced mortality or cardiac hospitalisation risk during long-term follow-up, independent of baseline fitness.

scholarly journals Emergency department patient compliance with follow-up for outpatient exercise stress testing: a randomized controlled trial

CJEM ◽  
2007 ◽  
Vol 9 (06) ◽  
pp. 435-440 ◽  
Author(s):  
Doug Richards ◽  
Nazanin Meshkat ◽  
Jaqueline Chu ◽  
Kevin Eva ◽  
Andrew Worster
Keyword(s):  
Chest Pain ◽  
Stress Testing ◽  
Stress Test ◽  
Intervention Group ◽  
Exercise Stress Test ◽  
Low Risk ◽  
Exercise Stress ◽  
Exercise Stress Testing ◽  
Control Group

ABSTRACTIntroduction:Numerous patients are assessed in the emergency department (ED) for chest pain suggestive of acute coronary syndrome (ACS) and subsequently discharged if found to be at low risk. Exercise stress testing is frequently advised as a follow-up investigation for low-risk patients; however, compliance with such recommendations is poorly understood. We sought to determine if compliance with follow-up for exercise stress testing is higher in patients for whom the investigation is ordered at the time of ED discharge, compared with patients who are advised to arrange testing through their family physician (FP).Methods:Low-risk chest pain patients being discharged from the ED for outpatient exercise stress test and FP follow-up were randomized into 2 groups. ED staff ordered an exercise stress test for the intervention group, and the control group was advised to contact their FP to arrange testing. The primary outcome was completion of an exercise stress test at 30 days, confirmed through both patient contact and stress test results. Patients were unaware that our primary interest was their compliance with the exercise stress testing recommendations.Results:Two-hundred and thirty-one patients were enrolled and baseline characteristics were similar between the 2 groups. Completion of an exercise stress test at 30 days occurred in 87 out of 120 (72.5%) patients in the intervention group and 60 out of 107 (56.1%) patients in the control group. The difference in compliance rates (16.4%) between the 2 groups was statistically significant (χ2= 6.69,p&lt; 0.001) with a relative risk of 1.29 (95% confidence interval 1.18–1.40), and the results remained significant after a “worst case” sensitivity analysis involving 4 control group cases lost to follow-up. When subjects were contacted by telephone 30 days after the ED visit, 60% of those who were noncompliant patients felt they did not have a heart problem and that further testing was unnecessary.Conclusion:When ED staff order an outpatient exercise stress test following investigation for potential ACS, patients are more likely to complete the test if it is booked for them before ED discharge. After discharge, many low-risk chest pain patients feel they are not at risk and do not return to their FP for further testing in a timely manner as advised. Changing to a strategy of ED booking of exercise stress testing may help earlier identification of patients with coronary heart disease.

Modifiable Predictors of a Peak Oxygen Consumption <14 ml/kg/min in Patients With Chronic Heart Failure

2012 ◽  
Vol 18 (8) ◽  
pp. S17
Author(s):  
Omar Saeed ◽  
Kevin M. Gentile ◽  
Jigar Patel ◽  
Argelis Rivera ◽  
William Lee ◽  
...  
Keyword(s):  
Heart Failure ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Peak Oxygen Consumption

Prediction of mortality in chronic heart failure from peak oxygen consumption adjusted for either body weight or lean tissue

2004 ◽  
Vol 10 (5) ◽  
pp. 421-426 ◽  
Author(s):  
Mariantonietta Cicoira ◽  
Constantinos H. Davos ◽  
Darrel P. Francis ◽  
Wolfram Doehner ◽  
Luisa Zanolla ◽  
...  
Keyword(s):  
Heart Failure ◽  
Body Weight ◽  
Oxygen Consumption ◽  
Chronic Heart Failure ◽  
Peak Oxygen Consumption ◽  
Lean Tissue ◽  
Prediction Of Mortality

The ECG in cardiac stress testing: a valuable, but unappreciated source of clues

1998 ◽  
Vol 7 (4) ◽  
pp. 320-327
Author(s):  
LG Futterman ◽  
L Lemberg
Keyword(s):  
Emergency Department ◽  
Clinical Features ◽  
Stress Testing ◽  
Stress Test ◽  
Exercise Stress Test ◽  
Accurate Diagnosis ◽  
Exercise Stress ◽  
Cardiac Stress ◽  
Cardiac Stress Testing ◽  
Ecg Abnormalities

The ECG exercise stress test is a very potent aid to the clinical diagnosis of CAD. Thorough knowledge of the ECG abnormalities and clinical features related to the stress test are required for an accurate diagnosis. The ECG exercise stress test is not a substitute for clinical acumen. Proper evaluation of the stress test is a clinical art of the skilled clinician. ECG exercise stress testing can be done efficiently and effectively by trained emergency department physicians. As a result, the diagnosis of CAD can be greatly accelerated.

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