Tizanidine Induced Hypotension : Report of a Case and Review of the Literature

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INTRODUCTION: Spasticity is a common sequelae of stroke, and often these patients receive anti-spastic drugs such as baclofen or tizanidine. Stroke patients have multiple co-morbidities such as hypertension, diabetes, and seizure. Tizanidine is an α2 and imidazole receptor agonist at a spinal and supraspinal level resulting in reduced central sympathetic outflow and causing hypotension rarely, especially in those receiving beta-blockers or angiotensin-converting enzyme inhibitors.

CASE PRESENTATION: We report a 56-year-old hypertensive male presenting with altered sensorium who had recurrent intracerebral hemorrhage with left spastic hemiplegia and focal seizures. He was on amlodipine, atenolol, telmisartan and oxcarbazepine. After 3 doses of tizanidine 2mg, his blood pressure dropped from 140/90 to 80/40 mmHg and pulse from 82 bpm to 44 bpm. His blood counts, serum chemistry, procalcitonin, and Trop I were normal. ECG revealed sinus bradycardia. After 8 hours of withdrawing tizanidine, his blood pressure became 110/70 mmHg, and on the next day, it became 140/82 mmHg. His attendants were taught physiotherapy to minimize spasticity.

CONCLUSION: This patient highlights the need for close monitoring of patients receiving tizanidine co-medication with angiotensin-converting enzyme inhibitors and angiotensin receptor blockers. These drugs have a synergistic effect on reducing the renin-angiotensin-aldosterone system, thereby hypotension and bradycardia.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:19

Enthalten in:

Current drug safety - 19(2024), 2 vom: 23., Seite 313-316

Sprache:

Englisch

Beteiligte Personen:

Mahajan, Roopali [VerfasserIn]
Kalita, Jayantee [VerfasserIn]

Links:

Volltext

Themen:

6AI06C00GW
Angiotensin-Converting Enzyme Inhibitors
Angiotensin-converting enzyme inhibitors.
Bradycardia
Case Reports
Hypotension
Review
Spasticity
Stroke
Tizanidine

Anmerkungen:

Date Completed 10.01.2024

Date Revised 10.01.2024

published: Print

Citation Status MEDLINE

doi:

10.2174/1574886318666230725113855

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM359899870