Table 5.

Antivenin Administration for Patients with Malayan Pit Viper Envenomation Reported to Ramathibodi Poison Center (n = 315 Courses)

Antivenin Administration	Course (% of 315 Courses)
Indications
Prolonged VCT	212 (67.3)
Unclotted 20WBCT	73 (23.2)
Platelet <50,000 mcL	30 (9.5)
INR >1.2	42 (13.3)
Systemic bleeding	14 (4.4)
Operative management	1 (0.3)
Appropriate administration	269 (85.4)
Correct indication	293 (93.0)
Appropriate dosage	305 (96.8)
Appropriate duration of infusion	300 (95.2)

Abbreviations: VCT, venous clotting time; 20WBCT, 20-minute whole blood clotting test; INR, international normalized ratio.