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Large snake size suggests increased snakebite severity in patients bitten by rattlesnakes in Southern california.
Wilderness & Environmental Medicine 2010 June
OBJECTIVE: To correlate rattlesnake size and other characteristics of envenomation with the severity of envenomation.
METHODS: We retrospectively reviewed 145 charts of patients bitten by rattlesnakes in Southern California between 1995 and 2004, measuring Snakebite Severity Scores (SSS) and characteristics of envenomation that might be correlated with snakebite severity, including rattlesnake size, rattlesnake species, patient size, and anatomic location of the bite. Outcomes measured included SSS, complications of envenomation, number of vials of antivenom used, and length of hospital stay.
RESULTS: Of the patients bitten by rattlesnakes, 81% were men, and 79% of bites were on the upper extremities. Fifty-five percent of bites were provoked by the patient, and 44% were unprovoked. Neither location of snakebite nor provocation of snakebite affected the SSS. Only 1 patient had a snakebite without envenomation, and only 1 patient died from envenomation. Rattlesnake size was positively correlated with SSS, and SSS was positively correlated with the number of vials of antivenom used and with the length of hospital stay. Rattlesnake species and patient mass did not affect SSS.
CONCLUSIONS: Larger rattlesnakes cause more severe envenomations, which contradicts popular belief.
METHODS: We retrospectively reviewed 145 charts of patients bitten by rattlesnakes in Southern California between 1995 and 2004, measuring Snakebite Severity Scores (SSS) and characteristics of envenomation that might be correlated with snakebite severity, including rattlesnake size, rattlesnake species, patient size, and anatomic location of the bite. Outcomes measured included SSS, complications of envenomation, number of vials of antivenom used, and length of hospital stay.
RESULTS: Of the patients bitten by rattlesnakes, 81% were men, and 79% of bites were on the upper extremities. Fifty-five percent of bites were provoked by the patient, and 44% were unprovoked. Neither location of snakebite nor provocation of snakebite affected the SSS. Only 1 patient had a snakebite without envenomation, and only 1 patient died from envenomation. Rattlesnake size was positively correlated with SSS, and SSS was positively correlated with the number of vials of antivenom used and with the length of hospital stay. Rattlesnake species and patient mass did not affect SSS.
CONCLUSIONS: Larger rattlesnakes cause more severe envenomations, which contradicts popular belief.
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