Related Experiment Video
Updated: Apr 30, 2026
Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
Published on: October 1, 2019
[Predictive value of cardiopulmonary exercise testing in various categories of patients with chronic heart value]
Insights
Cardiopulmonary exercise testing (CPET) parameters, including the Heart Failure Survival Score (HFSS), effectively predict cardiovascular mortality and hospitalizations in chronic heart failure (CHF) patients. Prognostic value varies by gender, age, LVEF, and cardiac rhythm.
Area of Science:
- Cardiology
- Exercise Physiology
- Clinical Medicine
Context:
- Chronic heart failure (CHF) management relies on accurate prognostic indicators.
- Optimal medical treatment is standard for CHF patients.
- Cardiopulmonary exercise testing (CPET) offers valuable physiological data.
Purpose:
- To determine the prognostic significance of CPET parameters in CHF patients.
- To analyze how gender, age, left ventricular ejection fraction (LVEF), cardiac rhythm, and respiratory exchange ratio (RER) achievement modify prognostic value.
- To compare the predictive power of CPET indices against the Heart Failure Survival Score (HFSS).
Summary:
- The Heart Failure Survival Score (HFSS) demonstrated the highest predictive value for cardiovascular mortality (CVM) and combined endpoints (CVM or hospitalization) across most patient subgroups.
- Ventilatory indices (VE/VCO2, ventilatory class, PetCO2 peak) and VO2peak were significant predictors, particularly in men, younger patients (<65 years), those with reduced LVEF (<45%), and sinus rhythm.
- Prognostic significance of blood pressure response and heart rate recovery was limited to patients with sinus rhythm. Achieving a target RER ≥ 1.0 was uncommon (40.5%), but VO2 peak remained predictive even when not achieved.
Impact:
- Identifies the strongest predictors of adverse outcomes in diverse CHF populations.
- Highlights the importance of considering patient-specific factors (gender, age, LVEF, rhythm) when interpreting CPET results.
- Supports the integration of CPET and HFSS into routine CHF assessment for improved risk stratification and treatment guidance.
Aim:
To specify the prognostic value of parameters of cardiopulmonary exercise testing (CPET) in patients with chronic heart value (CHF) on optimal medical treatment depending on gender, age, left ventricular ejection fraction (LVEF), cardiac rhythm and achievement of target respiratory exchange ratio (RER) > or = 1.0.
Materials And Methods:
111 patients (83 male, mean age 60.6 +/- 12.8 years) with CHF NYHA class I-III on optimal treatment were included in the study. One third had preserved EF, 27.9%--permanent atrial fibrillation (AFib). Average followup was 19.4 +/- 9.6 months. Prognostic value of CPET indices and Heart Failure Survival Score (HFSS) for cardiovascular mortality (CVM) and combined endpoint including CVM or CHF hospitalization were evaluated using logistic regression analysis.
Results:
CVM amounted 14.4%, combined endpoint was observed in 46.8% of patients. HFSS had the highest predictive value for CVM (in all subgroups of patients) and for combined endpoint (except patients with AFib). In men, patients younger than 65 years, with reduced LVEF and with Afib CVM was also related to ventilatory indices (VE/VCO2, ventilatory class and PetCO2 peak), and combined endpoint was related to VO2peak and its derivativatives. Only HFSS and VE/VCO2 had prognostic value for CVM in patients with AFib. Ventilatory parameters were associated with combined endpoint in all subgroups except Afib. Blood pressure response and heart rate recovery had prognostic significance only in patients with sinus rhythm. Target RER > or = 1.0 was achieved only in 40.5% patients. In patients with RER < 1.0 significant relationship between VO2 peak and combined endpoint was observed. CONCLUSIONS; Heart Failure Survival Score, VE/VCO2, ventilatory class and PetCO peak are the strongest predictors of cardiovascular mortality and heart failure hospitalizations in all subgroups of patients with CHF. CPET has the highest significance for men, age < 65 years, patients with LVEF < 45% and sinus rhythm. In these subgroups VO2 peak and Weber class have predictive value for decompensation of CHF whether RER > or = 1.0 or not. Blood pressure response and heart rate recovery have prognostic significance only in patients with sinus rhythm.
More Related Videos
Related Concept Videos
01:26Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
01:17Pathophysiology of Heart Failure
01:27Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History
01:25Pulmonary Function Tests
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
01:30Heart Failure VII: Nursing Interventions
01:30Cardiomyopathy II: Dilated Cardiomyopathy