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Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
Published on: March 27, 2018
Exercise-based cardiac rehabilitation improves hemodynamic responses after coronary artery bypass graft surgery
Fatemeh Esteki Ghashghaei1, Masoumeh Sadeghi, Seyed Mohammad Marandi
1MSc, Department of Physical Educational and Sport Sciences, Khorasgan Branch, Islamic Azad University, Isfahan, Iran.
Insights
Cardiac rehabilitation significantly improves functional capacity and hemodynamic responses in patients after coronary artery bypass grafting (CABG). This program enhances exercise tolerance and vital signs, highlighting the importance of post-surgery rehabilitation referrals.
Area of Science:
- Cardiology
- Rehabilitation Medicine
- Public Health
Background:
- Cardiovascular disorders are a leading global cause of mortality and morbidity.
- The American Heart Association recommends cardiac rehabilitation to improve patient outcomes.
- Post-coronary artery bypass graft (CABG) surgery care often includes rehabilitation to enhance functional capacity.
Purpose of the Study:
- To evaluate the effectiveness of a cardiac rehabilitation program.
- To assess improvements in functional status and hemodynamic responses in post-CABG patients.
- To compare outcomes between patients undergoing cardiac rehabilitation and a control group.
Main Methods:
- A study involving 32 post-CABG patients, with 17 in a 2-month cardiac rehabilitation program and 15 in a control group.
- Cardiac rehabilitation included exercise, nutritional, psychological consultation, and risk factor management.
- Functional capacity was assessed using exercise tests, 6-minute walking tests, and echocardiography before and after the program.
Main Results:
- The rehabilitation group showed significant improvement in walking distance (P < 0.01) compared to the control group (P = 0.33).
- Significant positive changes were observed in hemodynamic responses, including blood pressure, heart rate, ejection fraction, and rate pressure product.
- These improvements indicate enhanced physiological adaptation to exercise post-CABG.
Conclusions:
- Cardiac rehabilitation is highly effective in improving functional capacity in post-CABG patients.
- The program positively impacts key hemodynamic responses essential for cardiovascular health.
- Referral to cardiac rehabilitation units is crucial for optimal recovery and management of patients after CABG surgery.
Background:
Cardiovascular disorders are an important public health problem worldwide. They are also the leading cause of mortality and morbidity. Therefore, American Heart Association proposed cardiac rehabilitation program as an essential part of care for cardiac patients to improve functional capacity. The aim of this study was to evaluate the effectiveness of cardiac rehabilitation program on functional status and some hemodynamic responses in patients after coronary artery bypass graft (CABG) surgery.
Methods:
Thirty two patients were selected for this study. All patients underwent cardiac surgery two months before admission. They were allocated to two groups. While the rehabilitation group (n =17, mean age: 62 ± 12 years) completed the cardiac rehabilitation program for two months, the reference group (n = 15, mean age: 58.5 ± 12.5 years) did not have any supervised physical activity during this period. Cardiac rehabilitation program consisted of exercise, nutritional, psychological consultation and risk factor management. At the beginning of the study, functional capacity of patients was evaluated by exercise test, 6-minute walking test and echocardiography. Functional capacity was evaluated for a second time after two months of cardiac rehabilitation. Data were analyzed by SPSS(15). For comparing the mean of outcomes, Mann-Whitney test and Wilcoxon signed ranks test were used.
Results:
As a result of cardiac rehabilitation, a significant improvement was observed in the distance walked in the rehabilitation group (P < 0.01) compared to the reference group (P = 0.33). It also caused a significant development in hemodynamic responses to exercise such as resting and maximum systolic and diastolic blood pressure, resting and maximum heart rate, ejection fraction and rate pressure product.
Conclusion:
Cardiac rehabilitation significantly improves functional capacity and some hemodynamic responses post coronary artery bypass grafting. Therefore, patients need to be referred to rehabilitation units.
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