Midodrine Administration Parameters for Blood Oxygen and Heart Rate

Dosing Recommendations

The American Journal of Kidney Diseases recommends an initial dose of 2.5-5 mg three times daily, with the first dose taken before arising and the last dose at least 4 hours before bedtime to avoid supine hypertension 3
For dialysis patients, a single 5 mg dose can be administered 30 minutes before dialysis to prevent intradialytic hypotension, as recommended by the American Journal of Kidney Diseases 1, 2

The American Journal of Kidney Diseases and the American College of Cardiology recommend monitoring for bradycardia, as midodrine is associated with reflex parasympathetic stimulation, and using it with caution in patients with congestive heart failure or those taking negative chronotropic agents (beta-blockers, digoxin, non-dihydropyridine calcium channel blockers) 2, 4
The American Journal of Kidney Diseases recommends caution in patients with pre-existing bradycardia, as no specific heart rate cutoff is established in guidelines 1, 2

The American Journal of Kidney Diseases recommends monitoring for supine hypertension, and discontinuing therapy if supine systolic hypertension exceeds 180 mmHg or diastolic exceeds 110 mmHg 1, 2

The American Journal of Kidney Diseases recommends avoiding concomitant use with other alpha-adrenergic agents (ephedrine, pseudoephedrine, phenylpropanolamine) as this may aggravate supine hypertension, and avoiding use with alpha-adrenergic blockers (terazosin, prazosin, doxazosin) as it could result in urinary retention 2

In dialysis patients, midodrine is effectively cleared by hemodialysis with a reduced half-life of 1.4 hours, as reported by the American Journal of Kidney Diseases 1, 2
The American Journal of Kidney Diseases suggests that the combination of cool dialysate and predialysis doses of midodrine may provide better management of intradialytic hypotension with fewer side effects 2