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Biomedical subjects

A Richens

Publications and source records attributed to A Richens.

At least 235 records · Page 13Linked to original sources
PubMed1974

Phenytoin intoxication induced by sulthiame in epileptic patients.

Routine estimation of serum phenytoin levels in patients newly admitted to a Special Centre for Epilepsy showed that 40% of those receiving sulthiame in addition to phenytoin had levels in the toxic range. Four long-stay patients became drug intoxicated when sulthiame treatment was started. Sulthiame appears to inhibit the hepatic hydroxylation of phenytoin.

Adolescent↗
PubMed1973

Adrenergic control of tendon jerk reflexes in man.

1. Tendon jerk responses and H reflexes were recorded from conscious human volunteers before and after intravenous injection of methylamphetamine, thymoxamine and propranolol, and during intravenous infusion of noradrenaline.2. Methylamphetamine produced a significant increase in the amplitude of the tendon jerk, whereas noradrenaline had no effect in doses which caused a greater pressor response than methylamphetamine.3. Thymoxamine produced a dose-related reduction in the tendon jerk.4. Propranolol had no significant effect on the jerk.5. None of these drugs significantly affected the H reflex.6. It is suggested that central adrenoceptors, possibly alpha in type, exist in man, and that stimulation of these receptors facilitates tendon jerk reflexes by an action on the fusimotor system.

Blood Pressure↗