Ball-valve effect of a contaminated spinal needle.
Bishton
I M
IM
Clark
M J
MJ
D000368:Aged; D000369:Aged, 80 and over; D000775:Anesthesia, Spinal / Q000295:instrumentation*; D001769:Blood; D004866:Equipment Contamination; D004868:Equipment Failure; D006801:Humans; D008297:Male; D009339:Needles