Rule

Any inflammatory, cardiopulmonary, or other unexpected acute event that begins 5-30 min after an intravenous heparin bolus should be considered acute HIT unless proved otherwise. The postbolus platelet count should be measured promptly and compared with prebolus levels, because the platelet count fall is abrupt and often transient.

APPENDIX 2. ESTIMATING THE PRETEST PROBABILITY OF HIT: THE FOUR Ts

Points (0, 1,or 2 for each of 4 categories: maximum possible score=8)a

0 0

Post a comment