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Changes in the electrocardiogram, vectorcardiogram and ballistocardiogram after hemodialysis in chronic uremia
Insights
Chronic uremia causes irreversible heart abnormalities, including left ventricular hypertrophy. Hemodialysis did not resolve these electrocardiogram and ballistocardiogram (BCG) issues, suggesting myocardial hypertrophy plays a key role.
Area of Science:
- Nephrology
- Cardiology
- Medical Physiology
Background:
- Chronic uremia, often secondary to kidney diseases like glomerulonephritis, can lead to significant cardiovascular complications.
- Electrophysiological and hemodynamic disturbances are common in patients with end-stage renal disease.
Purpose of the Study:
- To investigate the impact of hemodialysis on electrocardiogram (ECG) and ballistocardiogram (BCG) in patients with chronic uremia.
- To determine the reversibility of cardiac abnormalities in uremic patients after hemodialysis.
Main Methods:
- Studied 12 patients with uremia undergoing hemodialysis.
- Assessed electrical activity, form, and amplitude of BCG before and after hemodialysis.
- Analyzed ECG and vectorcardiogram (VCG) findings.
Main Results:
- Most ECG and BCG abnormalities were irreversible post-hemodialysis.
- Left ventricular hypertrophy was observed in 9 out of 12 patients via VCG.
- No patients received digitalis during the study period.
Conclusions:
- Myocardial hypertrophy is strongly implicated in the development of irreversible pathological repolarization and hemodynamic issues in chronic uremia.
- Hemodialysis may not fully restore cardiac function in advanced uremia, highlighting the role of underlying cardiac structural changes.
Abstract:
In 12 cases with uremia, the electrical activity and form and amplitude of Bcg (displacement) were investigated before and after hemodialysis. The uremia was secondary to chronic glomerulonephritis (9 cases), familial nephritis (1 case), polycystic kidney disease (1 case) and chronic pyelonephritis (1 case). During the study digitalis was not given to the patients. The ECG and Bcg abnormalities were irreversible in most cases. In 9 cases the VCG showed hypertrophy of the left ventricle. Considering these facts it is assumed that myocardial hypertrophy might play an important part in the development of irreversible pathological repolarization and hemodynamic troubles in chronic uremia.