Since the thrombocyte count started to increase immediately after initiation and dropped immediately after discontinuation of ciprofloxacin and tazobactam/piperacillin and all other drugs were discontinued already before or were started after the nadir of the thrombocyte count, these two antibiotics were regarded causative.
thrombocyte count started to increase
piperacillin
thrombocyte count started to increase
ciprofloxacin
thrombocyte count started to increase
tazobactam