AS IS WELL KNOWN, physiological measurement of impaired cardiac capacity is fraught with the same difficulties involved in estimating "physical fitness." Even more, the former type of determination precludes maximum cardiovascular stress. The sociological plane introduces further complications. Impairment of cardiovascular function may not necessarily be equated with "disability." Satisfactory and productive activity really expresses a state of relativity, as the ability (or disability) of an individual is a resultant of several intrinsic and extrinsic factors. These are, on the one hand, the physiological capacity and the emotional integration of the individual; and on the other hand, the degree of family involvement, the nature of job requirements, and even the particular community attitudes and legal (compensation laws) outlook in regard to employment of the handicapped.
Nevertheless, some estimate of a patient recovering from a cardiovascular breakdown is desirable for several reasons. In view of the lack of any information,
Gordon EE, Anderson M. Work Prescription for Cardiacs in the Convalescent Stage. JAMA. 1963;183(2):137–139. doi:10.1001/jama.1963.63700020032021a
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