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Graded exercise in three cases of heart rupture after acute myocardial infarction
K Mineo1, A Takizawa, M Shimamoto
1Department of Rehabilitation Medicine, Shizuoka City Hospital, Japan.
Insights
Gradual, low-level exercise can improve quality of life for acute myocardial infarction (AMI) patients with heart rupture. Close monitoring is crucial to prevent adverse cardiac events, especially in those with severely reduced cardiac function.
Area of Science:
- Cardiology
- Rehabilitation Medicine
Background:
- Limited research exists on exercise for patients post-acute myocardial infarction (AMI) with heart rupture.
- Heart rupture post-AMI, including left ventricular free wall or ventricular septal rupture, presents unique challenges for rehabilitation.
Observation:
- Three post-AMI patients with heart rupture (two surgically treated, one conservatively managed) participated in a graded exercise program.
- Patients exhibited muscle weakness, low endurance, and reduced left ventricular ejection fraction (28-47%).
- The program included three grades: slow walking, reconditioning/ADL, and endurance training (<75% max heart rate).
Findings:
- Patients undergoing graded exercise showed improvements in double product, work capacity, and activities of daily living (ADL).
- No instances of congestive heart failure, ischemic attacks, or serious arrhythmias were observed during the program.
- One young patient who completed all three exercise grades died from a cardiac event 10 months post-AMI.
Implications:
- Delayed, gradual, low-level graded exercise (4-6 METs) is recommended for post-AMI heart rupture patients to enhance work capacity and quality of life.
- Continuous monitoring of ECG and blood pressure during exercise is vital.
- Careful supervision of daily activity and exercise intensity is necessary for patients with severely compromised cardiac function to mitigate risks.
Abstract:
Despite advances in the study of exercise for acute myocardial infarction (AMI) patients, few studies on exercise for post-AMI heart rupture patients have been reported. We assessed three cases of heart rupture (of the left ventricular free wall in two cases and of the ventricular septum in one case) in post-AMI patients who underwent three-graded exercise. Two of the three patients were operated on, whereas one patient was managed conservatively for heart rupture. Two of the three cases had also suffered cerebral infarction post-AMI. The exercise program was composed of three grades, slow level walking (grade 1), mild reconditioning and activities of daily living (ADL) exercises (grade 2), and optional endurance training using machines below 75% of predicted maximal heart rate (grade 3). Electrocardiograms and blood pressure were monitored during all exercises. All patients had muscle weakness, poor endurance capacity, as well as low cardiac function (28-47% of left ventricular ejection fraction). Two patients underwent grades 1 and 2 exercise programs, and the other performed grades 1, 2, and 3 exercise programs over a 3- to 10-wk period. We observed improvement in the double product, work capacity, and ADL without congestive heart failure, ischemic attack, or serious arrhythmias. However, the youngest patient, who underwent the grade 3 exercise program, died from a cardiac event 10 mo after onset of AMI. We conclude that post-AMI heart rupture patients should undergo delayed, gradual, low-level graded exercise (4-6 metabolic equivalents), with monitoring of blood pressure and electrocardiograms to improve work capacity, ADL, and the quality of life. However, daily activity and exercise intensity should be promptly supervised for those with severely deteriorated cardiac functions to prevent sudden cardiac event.