NCT02758600

Cardiopulmonary and Metabolic Responses to Early Exercise in Patients After Coronary Arterial Bypass Grafting

Cardiopulmonary and Metabolic Responses in Early Exercise-based Rehabilitation in Patients With or Without Left Ventricular Dysfunction After Coronary Arterial Bypass Grafting

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Federal University of São Paulo · Academic / Other
• Sex: All
• Age: 35 Years – 75 Years
• Healthy volunteers: Not accepted

Summary

Coronary arterial bypass graft surgery (CABG) is proven safe with improved survival and greater quality of life in patients with coronary arterial disease. Evidences on the cardiovascular and gas-exchanges responses during and right after early exercise-based rehabilitation of this patients are limited. Objective: The investigators aim to analyse breath-by-breath cardiopulmonary and metabolic responses during six-minute walk test (6MWT) and shuttle walk test (SWT) in patients with or without left ventricular dysfunction (LVD) after CABG. In addition, the investigators will investigate oxygen consumption and cardiopulmonary responses during the early exercise-based rehabilitation in the first days after surgery. Methods: According to the left ventricular ejection fraction (LVEF), subjects will be allocated into two groups: with LVD (LVEF \< 45%) and without LVD (LVEF \> 45%). Patients will be submitted to the 6MWT and SWT linked to portable spirometric-telemetric device before and 6 days after CABG. During the first days after surgery, patients will be evaluated about pulmonary function and respiratory strenght at rest and oxygen consumption during the portable cycle ergometer protocol. Clinical outcomes as time to hospital discharge, pulmonary complications and occurence of arrythmias will be assessed during inpatient time until hospital discharge. Incidence of mortality, hospital readmission and angina recurrence will be evaluated in a one-year follow up.

Conditions

• Acute Myocardial Infarction: Rehabilitation Phase
• Coronary Artery Bypass Graft Triple Vessel
• Physical Activity

Interventions

Type	Name	Description
OTHER	Cycle ergometer exercise rehabilitation protocol	Patients will be submitted to a progressive and moderate exercise protocol with a portable cycle ergometer.

Timeline

• Start date: 2016-03-01
• Primary completion: 2016-11-01
• Completion: 2017-12-01
• First posted: 2016-05-02
• Last updated: 2016-08-17

Locations

1 site across 1 country: Brazil