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Year : 2009  |  Volume : 57  |  Issue : 2  |  Page : 200--202

Life-threatening cardiotoxicity due to chronic oral phenytoin overdose

Chih-Min Su1, Chia-Te Kung1, Yu-Chin Wang2, Cheng-Hsien Lu3 
1 Department of Emergency Medicine, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
2 Department of Pharmacy, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
3 Department of Neurology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan

Correspondence Address:
Cheng-Hsien Lu
Department of Neurology, Chang Gung Memorial Hospital 123, Ta Pei Road, Niao Sung Hsiang Kaohsiung Hsien
Taiwan

Severe cardiac adverse effects are often related to intravenous phenytoin overdose. However, there is no reported cardiotoxicity resulting from oral overdose of phenytoin. We report a patient with post-traumatic epilepsy who received oral phenytoin for five months and developed life-threatening junctional bradycardia, with his serum phenytoin level reaching up to 91µg/mL. The patient was successfully treated with temporary transvenous pacemaker implantation for his severe bradycardia and hypotension. To our knowledge, our patient had the most serious cardiovascular toxicity ever reported with chronic oral phenytoin overdose. From emergency department (ED) physician«SQ»s perspective, when a patient with dysrhythmias and cardiovascular collapse is presented to the ED, severe phenytoin overdose should be considered in patients on oral phenytoin with hyperbilirubinemia, hypoalbuminemia, and severe electrolyte imbalance.


How to cite this article:
Su CM, Kung CT, Wang YC, Lu CH. Life-threatening cardiotoxicity due to chronic oral phenytoin overdose.Neurol India 2009;57:200-202


How to cite this URL:
Su CM, Kung CT, Wang YC, Lu CH. Life-threatening cardiotoxicity due to chronic oral phenytoin overdose. Neurol India [serial online] 2009 [cited 2020 Aug 5 ];57:200-202
Available from: http://www.neurologyindia.com/article.asp?issn=0028-3886;year=2009;volume=57;issue=2;spage=200;epage=202;aulast=Su;type=0