What is the role of pharmacotherapeutic intervention in cocaine toxicity?

Updated: Sep 01, 2018
  • Author: Lynn Barkley Burnett, MD, EdD, LLB(c); Chief Editor: Sage W Wiener, MD  more...
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Answer

The general objectives of pharmacotherapeutic intervention in cocaine toxicity are to reduce the central nervous system and cardiovascular effects of the drug by using benzodiazepines initially and then to control clinically significant tachycardia and hypertension while simultaneously attempting to limit deleterious drug interactions.

In a cardiac arrest, vasopressin may offer considerable advantage over epinephrine.

Some patients who abuse cocaine have enhanced sensitivity to benzodiazepines despite a significantly decreased plasma concentration. Be alert to the extreme sedative effects that have been noted after the administration of lorazepam to some patients who used cocaine.

Nitroglycerin or nitroprusside may be needed to treat severe hypertension. For both of these drugs, an infusion system that ensures a precise rate of flow is needed. Closely monitor the patient's vital signs when vasoactive and antihypertensive medications are used. When vasoactive agents are discontinued, taper them slowly.

Hypotension may compound the patient's status; if present, norepinephrine may be required.

Hypoglycemia is always a possibility in patients presenting with neuropsychiatric syndromes. If bedside glucose results confirm the need, administer thiamine and glucose. Thiamine should be administered before dextrose in patients with signs of Wernicke encephalopathy.


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