Prospective study of recovery from copperhead snake envenomation: an observational study

BMC Emergency Medicine

Table 15 Walking speed: Overall Study Results

	Discharge		Day 3		Day 7		Day 14		Day 21		Day 28
	Median	Range	Median	Range	Median	Range	Median	Range	Median	Range	Median	Range
Time to walk 7.62 meters (sec)	UTP	7.1, UTP	UTP	6.8, UTP	6.7	4.9, UTP	6.2	4.1, 11.4	5.5	4.3, 7.2	5.3	4.0, 6.2
Number of subjects unable to complete test	7/10 (70%)		6/9 (66%)		2/10 (20%)		0/10 (0%)		0/10 (0%)		0/10 (0%)

Time to walk 7.62 meters (25 feet) on indoor level ground, in seconds [29,30]. UTP: Unable to perform test (unable to safely walk 7.62 meters without assistance devices in 180 seconds or less). Data from 10 subjects with lower extremity envenomations except for the Day 3 measurements (n = 9). Higher numbers indicate slower ambulation. The maximum amount of time allowed for the task is 180 seconds, and subjects who were unable to complete the task were scored as 180 seconds. The day of envenomation is Day 0.

ISSN: 1471-227X