Fig. 1From: Hypotension caused by oral administration of 5-aminolevulinic acid persists after surgery in patients undergoing transurethral resection of bladder tumor under spinal anesthesiaTime courses of systolic blood pressure and diastolic blood pressure. Values are presented as mean ± standard deviation. *P < 0.05, post-operating room admission versus before 5-ALA p.o./morning. #P < 0.05, the ALA group versus the control group. ALA aminolevulinic acid, BP blood pressure, p.o. per osBack to article page