Pediatric emergency medicine trisk 559

TABLE 93.10 4T’S SCORE FOR HIT PRETEST PROBABILITY Thrombocytopenia Timing of fall in platelet count >50% plt count fall 30–50% plt count and nadir ≥20K fall to nadir 10– cells/μL 19K cells/μL Onset 5–10 days or >10 days or timing