Box 1: Results of the patient’s coagulation laboratory testing over time
Time after bite, h2225.530.535.543.553.5
INR*> 12.52.41.51.31.21.1
PTT, s†> 1804537263331
No. Antivipmyn vials administeredNone1020242832

  • Note: INR = international normalized ratio, PTT = partial thromboplastin time.

  • ↵* INR normal range 0.9–1.1.

  • ↵† PTT normal range 20–40 s.