Clinical Study of Mamushi Viper Bites in 35 Cases / 日本農村医学会雑誌

ABSTRACT

Mamushi is a species of pit viper distributed throughout Japan excluling the Ryukyu Islands and sighted from spring to autumn. It is estimated that about ten people dies in a year. It is important in the rural medicine because a lot of people are bitten in mountains and fields. A total of 35 cases of mamushi viper bite were treated from 1999 to 2006 in our hospital. The patients were 17 men and 18 women ranging in age from 7 to 80 years old (average 60). Local swelling and pain were manifest in all the cases. Sixteen patients had systemic symptoms, and toxic effects commonly appeared in the eyes. The blood tests revealed elevated CPK levels in 24 patients (69%). The elevation correlated to the seriousness of the clinical symptoms. In accordance with our manual for mamushi viper bites, all patients were hospitalized after incision for exclusion of the toxin. The median length of time before the worst symptoms began to subside was 3 days. The median length of hospitalization stays was 7 days. It took long before the patients fully recovered. The severity of envenomation was different from patient to patient and one case needed intensive care. The median of treatment period was 31 days. The quick and appropriate primary care for the mamushi viper bits is important to prevent serious complications.