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Pericardial effusion associated with minoxidil therapy in dialyzed patients
Abstract:
Pericardial effusion, diagnosed clinically or by echocardiography, was found in 13 of 16 regularly dialyzed patients (81%) receiving minoxidil for refractory hypertension. In a comparable group of 125 patients not receiving minoxidil, 28 patients (23%) had evidence of pericardial effusion, the difference between the groups being highly significant (p less than 0.0005). In minoxidil treated patients, the effusions resolved spontaneously in 4 (3 remaining on treatment), required pericardiocentesis (3), or pericardiectomy (1), and persisted in 4 (3 remaining on treatment). It is suggested that minoxidil treated dialysis patients be regulary examined for the development of potentially threatening pericardial effusions.
Insights
Minoxidil treatment in dialysis patients significantly increases the risk of pericardial effusion, a serious heart condition. Regular monitoring for this side effect is crucial for patients undergoing dialysis and receiving minoxidil therapy.
Area of Science:
- Nephrology
- Cardiology
- Pharmacology
Background:
- Refractory hypertension is a common complication in patients undergoing regular dialysis.
- Minoxidil is a potent vasodilator used to treat severe hypertension.
- Pericardial effusion is a potential, though not widely recognized, complication associated with certain antihypertensive medications.
Purpose of the Study:
- To investigate the incidence of pericardial effusion in dialysis patients receiving minoxidil for refractory hypertension.
- To compare the prevalence of pericardial effusion in minoxidil-treated dialysis patients versus a control group not receiving the drug.
Main Methods:
- A clinical study comparing two groups of patients undergoing regular dialysis.
- One group received minoxidil for refractory hypertension, while the control group did not.
- Diagnosis of pericardial effusion was confirmed clinically and/or via echocardiography.
Main Results:
- A significantly higher prevalence of pericardial effusion was observed in minoxidil-treated patients (81%) compared to the control group (23%) (p < 0.0005).
- In minoxidil-treated patients, effusions varied in outcome: spontaneous resolution (4), requiring pericardiocentesis (3), pericardiectomy (1), or persistence (4).
Conclusions:
- Minoxidil therapy is strongly associated with an increased risk of developing pericardial effusion in patients on regular dialysis.
- Routine echocardiographic screening for pericardial effusion is recommended for dialysis patients prescribed minoxidil.
- Early detection and management are essential to mitigate potential cardiovascular complications.