Oxygen uptake on-kinetics during six-minute walk test predicts short-term      outcomes after off-pump coronary artery bypass surgery

AbstractBackground: Patients underwent Coronary Artery Bypass Surgery are at risk of developing post-operative complications that affect length of stay, re-hospitalization and increase in mortality rate. Impaired functional capacity is associated with poor outcomes in patients after CABG. The Six Minute Walk Test (6MWT) is generally used to evaluate functional capacity before cardiac rehabilitation and to prescribe the intensity of exercise training. The six minute walk test (6MWT) is a simple test and has been used in heart failure patients to assess exercise tolerance, the effects of therapy and prognosis. This study is to investigate the relationship between the distance of 6MWTwith re- hospitalization and mortality rate in post coronary artery bypass surgery patients.Method: This is a retrospective cohort study conducted at Cardiac Centre of Adam Malik Hospital. Subjects of the study consists of 104 patients underwent coronary bypass surgery between January 2019 until February 2020. 6MWT is performed before the patient discharge. Rates of re-hospitalisation and mortality were observed during 3 months of follow-up. The distance walk during 6MWT was compare to rate of rehospitalization and cardiac mortality. Result: Total of 104 patients (91 males, mean age 57,4±5,7 years). Six patients died (5,8%) of cardiovascular cause and 18 (17,3%) were rehospitalized. Significant relationship was found between the distance of 6MWT and incidence of mortality and re-hospitalization (p <0.001). Patients with 6MWT <250 meters had a higher risk of re-hospital compared to those with 6MWT >250 meters with RR 16.74 (95% CI: 2.53-110.78) and p = 0.008. Conclusion: The six minute walk test (6MWT) is a predictor of re-hospitalization in patients post CABG. Patients who walked in shorter distance group <250 meters would increase risk of re-hospitalization rate 16.74 greater than patients with distances >250 meters. Keywords: 6MWT; CABG; rehospitalization; mortality

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Off-Pump Versus On-Pump Coronary Artery Bypass Surgery and Postoperative Pulmonary Dysfunction

Yearbook of Pulmonary Disease ◽

10.1016/s8756-3452(08)70226-3 ◽

2006 ◽

Vol 2006 ◽

pp. 280-281

Author(s):

J.A. Barker

Keyword(s):

Coronary Artery ◽

Coronary Artery Bypass ◽

Coronary Artery Bypass Surgery ◽

Bypass Surgery ◽

Artery Bypass ◽

Pulmonary Dysfunction ◽

Off Pump ◽

Pump Coronary Artery Bypass ◽

Postoperative Pulmonary Dysfunction

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Initial Report of Off-Pump Coronary Artery Bypass Surgery as Sole Therapy for Moderate Ischemic Mitral Regurgitation: Operative and Intermediate-Term Outcome

The Heart Surgery Forum ◽

10.1532/hsf98.20041162 ◽

2005 ◽

Vol 8 (2) ◽

pp. 89 ◽

Cited By ~ 3

Author(s):

Kevin M. Harris ◽

Avinash Reddy ◽

Dorothee Aepplii ◽

Betsy Wilson ◽

Robert W. Emery

Keyword(s):

Coronary Artery ◽

Mortality Rate ◽

Mitral Regurgitation ◽

Coronary Artery Bypass Surgery ◽

Bypass Surgery ◽

Artery Bypass ◽

Mortality Rates ◽

Off Pump ◽

Moderate Ischemic Mitral Regurgitation ◽

Pump Coronary Artery Bypass

Background: Patients undergoing on-pump coronary artery bypass surgery (CAB) with coexistent moderate ischemic mitral regurgitation (IMR) have a significant mortality rate compared to patients without MR. The mortality rate is elevated both perioperatively (0%-12% mortality), as well as over a 1- and 2-year postoperative period (15%-25%). It is thought that some patients are best served by off-pump CAB (OPCAB); however, outcomes have not been reported for such patients with coexistent moderate IMR. Methods: We reviewed the independent database of patients undergoing OPCAB between 1995 and 2002 to find 989 patients, 17 (1.7%) of whom had moderate or moderately severe MR. Patients were contacted and clinical and echocardiographic data were obtained. Results: The patient group consisted of 11 men and 6 women (age, 65 15 years). The study group had a PA pressure of 52 14, creatinine of 1.6 0.7, and left ventricular ejection fraction of 43 18. Nine patients (53%) had advanced New York Heart Association (class III-IV) heart failure. Mortality rates perioperatively and at 1, 2, and 3 years were 0%, 6.25% (1/16), 12.5% (2/16), and 38% (4/8), respectively. At the time of this report, no patient had returned for a reparative procedure. Conclusion: In patients felt to be best served by OPCAB with ischemic MR, operative and intermediate mortality rates are remarkably similar to those previously reported for on-pump series. These data underscore the continued need to understand which patients undergoing CAB require mitral valve problems to be addressed at the time of surgery.

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