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  • Title: Discharge functional capacity and self-efficacy of men after coronary artery bypass graft surgery.
    Author: Brown A, Laschinger S, Hains S, Parry M.
    Journal: Can J Cardiovasc Nurs; 1992; 3(2-3):18-24. PubMed ID: 1301076.
    Abstract:
    Fatigue and activity intolerance are reported to persist for several weeks after discharge after coronary artery bypass graft (CABG) surgery. This may be due to early discharge, which limits the time, prior to leaving hospital, to achieve an adequate functional level for the performance of many activities of daily living. Alternatively, it may be related to level of self-confidence, or self-efficacy (SE), in one's ability to perform physical activity. High SE may result in overexertion during the vulnerable, early post-discharge phase of recovery, whereas low SE may cause underexertion. The limited number of cardiac rehabilitation programs in Canada for this phase of recovery precludes close guidance and monitoring during physical activity for most patients. Prior to prescribing safe and effective home exercise at discharge, it is essential to assess functional level, cardiovascular responses to physical activity, and perceived level of confidence in ability to perform physical activity. The purpose of this descriptive study was to measure functional capacity, hemodynamic responses to low level exercise, and self-efficacy at discharge after CABG surgery. Twenty-one men completed a self-efficacy questionnaire (SEQ) and a low-level graded exercise test (LL-GXT) using a modified Naughton protocol, on the day of discharge. Results revealed that discharge functional capacity ranged from 1.0 METs to 4.3 METs, peak heart rate ranged from 82-150 beats.min-1, and peak systolic blood pressure from 114-200 mmHg. Subjects were more confident in their ability to tolerate psychological stressors than physical activity. Furthermore, there was no correlation between SE for physical activity and the physiological variables except HR.(ABSTRACT TRUNCATED AT 250 WORDS)
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