Determinants of response to intravenous hydralazine in hypertension

Alexander Shepherd, Min Shung Lin, John McNay, Thomas Ludden, Gary Musgrave

Producción científica: Articlerevisión exhaustiva

12 Citas (Scopus)


There is marked interindividual variation in hypotensive response to intravenous hydralazine (H). We examined the determinants of response in patients with hypertension. After a single intravenous dose of 0.3 mg/kg H, response was correlated independently (r = 0.8364) with both predrug blood pressure and acetylator index (AI). Intravenous dose ranging studies showed that response also depended on the amount of H in the systemic circulation. Although plasma H levels depend on AI after oral doses, this is not so after intravenous administration. AI must therefore affect response to H by an alternative, presumably nonmetabolic mechanism which, after oral dosing, would add to its effect on H levels. Response to intravenous nitroprusside was not related to AI, perhaps indicating specificity of this effect for H. These data reinforce the potential usefulness of determining AI before giving H to a patient.

Idioma originalEnglish (US)
Páginas (desde-hasta)773-781
Número de páginas9
PublicaciónClinical Pharmacology and Therapeutics
EstadoPublished - dic 1981

ASJC Scopus subject areas

  • Pharmacology (medical)
  • Pharmacology


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