Using Cardiopulmonary Exercise Test as an Incentive to Outpatient Cardiac Rehabilitation for Acute Coronary Syndrome Survivors.

Background: exercise-based cardiac rehabilitation is a class I recommendation for acute coronary syndrome (ACS) patients. However, participate rate of outpatient rehabilitation is quite low and remains a global issue. The study is to propose a strategy in order to encourage post-ACS patients to participate in the outpatient cardiac rehabilitation.

Hypothesis: cardiopulmonary exercise test (CPET) incentives ACS survivors to participate in outpatient cardiac rehabilitation.

Objectives: 200 ACS survivors who are eligible for cardiac rehabilitation will be allocated randomly into control and experimental groups.

Method: before discharge, both control and experimental groups will be informed of the importance of cardiac rehabilitation and invited to participate the outpatient rehabilitation. The experimental group will also be told that an important examination, i.e. the CPET, will be performed in order to evaluate their heart function at the outpatient department (OPD).

Primary outcome: the presence of ACS survivors at the OPD of rehabilitation in order to receive the rehabilitation/CPET.

Secondary outcomes: the adherence to cardiac rehabilitation, defined as completing a full course of cardiac rehabilitation (6 sessions) or home-based exercise.

Factors that might influence the presence of ACS survivors at OPD of rehabilitation will also be recorded and analyzed, including:

• Patient characteristics: age, sex, body mass index (BMI), cardiovascular disease (CVD) risk factors

• Electrocardiography (ECG): ST elevation myocardial infarction (STEMI) or non ST elevation myocardial infarction (NSTEMI)

• Lab data: peak troponin level.

• Days of hospitalization. Statistics: t-test, ANOVA