ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

The effects of long-term propranolol on the efficacy of exercise training on cardiovascular variables in patients with coronary artery disease were assessed in a community-based cardiac rehabilitation program. Eight men and one woman with significant coronary artery disease were randomly selected for this study. Each patient completed a maximal treadmill stress test (MTST) following the Bruce protocol while receiving propranolol 40–160 mg/d as a control study. Cardiorespiratory variables were measured at rest and at each stage of the treadmill test. These patients underwent an exercise training program for 12–16 weeks. Training sessions were for a minimum of 30–40 minutes, 3 times/wk, with training heart rates of 75% to 85% of the pretraining peak pulse rate. Training heart rate ranged from 98–128 beats/min. They were retested on a MTST afterward, on the same steady dose of propranolol. Cardiorespiratory variables, e.g., heart rate, blood pressure, maximum oxygen uptake (VO2max), carbon dioxide production (VCO2), gas exchange ratio (RER), ventilatory equivalents for oxygen and carbon dioxide (VE/VO2, VE/VCO2), oxygen pulse, etc., were measured every 30 seconds in relation to work increment. The mean values of VO2max, VO2max/kg, oxygen pulse, and total exercise time increased significantly after exercise training during propranolol intake. We conclude that the increase in VO2max due to increased stroke volume and peripheral O2extraction, is a result of training with beta-adrenergic blockade.

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Elevations of the MB isoenzyme of creatine kinase (CK-MB) in serum of endurance trained athletes may quantitatively resemble findings in patients with acute myocardial infarction. This creates a diagnostic dilemma when endurance trained athletes, such as runners, are evaluated for cardiorespiratory symptoms or heat injury during or after races. Serum CK-MB levels in such individuals are not specific for myocardial injury, analogous to electrocardiographic findings otherwise suggestive of myocardial ischemia. The clinical use of radionuclide myocardial scintigraphy to assess myocardial integrity in athletes with elevated serum CK-MB levels is discussed.

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Cardiac patients and cardiac rehabilitation staff are often concerned about travel to moderate altitude (3,000 to 10,000 ft) after a cardiac event. With increasing altitude, the barometric pressure decreases, resulting in a reduction in arterial oxygen partial pressure and content. Conceivably, this relative hypoxia could disrupt the balance between myocardial oxygen demand and supply, precipitating cardiac symptoms or a clinical event. Physiologic responses to moderate altitude exposure include increased pulmonary ventilation and heart rate (transient increase at rest and a more prolonged increase with submaximal exercise), hemoconcentration, a possible rightward shift in the oxyhemoglobin dissociation curve, and a modest reduction in physical work capacity. Medical concerns include such altitude disorders as acute mountain sickness (AMS) and high-altitude pulmonary edema (HAPE) as well as potential cardiac problems such as angina pectoris, arrhythmia, sudden death, congestive failure, and myocardial infarction. Acute mountain sickness is commonly experienced but is of little significance; on the other hand, HAPE, a noncardiac form of pulmonary edema, is potentially fatal but is extremely rare. Review of the physiologic responses and clinical experience at moderate altitude indicates that, for most cardiac patients, mountain travel constitutes a negligible risk. Subgroups of patients with preexisting pulmonary hypertension, uncompensated congestive heart failure, unstable angina pectoris, recent myocardial infarction, and patients with severe anemia or a decreased arterial oxygen saturation may be at higher risk than other cardiac patients.

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

The effect of providing patient education via nurse-educators (specialists) vs primary nurses (generalists) within a cardiac rehabilitation patient education program was studied. The subjects were 81 coronary artery bypass graft surgery patients whose cardiac knowledge and perceptions of the learning experience were assessed at the end of their inpatient hospital stay. Forty received their individual presurgery and discharge instruction from a nurse-educator (group 1), and 41 were taught by their primary nurse (group 2). Patients in group 2 were found to have higher knowledge scores, to state more often that one should know about the various teaching content items, and to be more likely to recall these items than patients in group 1. These results are attributed to the greater availability of primary nurses to patients and greater familiarity and trust between patients and their primary nurses, which are consistent with certain basic principles of adult education.

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Fifty-eight married patients who had documented coronary artery disease and were enrolled in an outpatient cardiac rehabilitation program participated in a multicenter controlled trial comparing the effects of group counseling on psychosocial adjustment with and without spousal participation. The experimental intervention involved a ten-week series of weekly group sessions based on symbolic interactionist role theory. Data were collected at baseline, ten weeks, and six months after beginning counseling. Repeated measures analysis of variance documented significant differences among groups in patients' self-esteem (P

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Cardiac Rehabilitation Programs is a regular feature in which the protocols of innovative and unique cardiac rehabilitation programs are described. The co-editors invite the staffs of other outstanding programs to submit descriptive articles concerning the financial, methodologic, and creative aspects of their program for possible publication in the journal.

ISSN:0883-9212    

出版商:OVID    

年代:1985

数据来源: OVID