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Risks of diuretic usage following stroke.

Matthew Churchill¹, Sean Grimm, Michael Reding

¹Burke Rehabilitation Hospital, 785 Mamaroneck Avenue, White Plains, NY 10605. mreding@burke.org

Neurorehabilitation and Neural Repair

|September 18, 2004

Summary

Diuretic use in stroke patients significantly increased blood urea nitrogen levels, indicating poorer hydration. Patients with dysphagia and swallowing difficulties faced the highest risk of severe dehydration.

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Area of Science:

Neurology
Nephrology
Clinical Medicine

Background:

Stroke rehabilitation patients often experience hydration challenges.
Diuretic medications are commonly prescribed, but their impact on hydration in this population requires further investigation.

Purpose of the Study:

To evaluate the association between diuretic use and hydration status in patients recovering from stroke.
To identify risk factors contributing to dehydration in stroke survivors.

Main Methods:

Prospective recording of hydration markers and neurological assessments in 296 stroke inpatients.
Definition of dysphagia via clinical evaluation and modified barium swallow.
Regular monitoring of serum hydration markers and calculation of odds ratios for elevated blood urea nitrogen (BUN).

Main Results:

Diuretic use was linked to significantly higher peak BUN levels (P < 0.01).
Dysphagia and need for thin-liquid restriction also correlated with increased BUN (P < 0.001 and P = 0.004, respectively).
Patients on diuretics with dysphagia and aspiration evidence had a 19.8-fold increased risk of BUN > or = 45 mg/dl.

Conclusions:

Diuretic administration is associated with impaired hydration status in stroke patients.
The combination of diuretic use and dysphagia presents a substantial risk for severe dehydration, necessitating careful management.

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