Table 2.

Demographic and clinical characteristics of patients with a history of reaction during general anaesthesia

	n	%
No. of patients	193
Age (y), mean (range)	37.5 (2–84)
Sex (F/M)	122/71
Personal history of allergic disease	84	43.52
Severity of reaction
Grade I (F/M)	100 (61/39)	51.81
Grade II (F/M)	32 (20/12)	16.58
Grade III (F/M)	55 (35/20)	28.49
Grade IV (F/M)	6 (6/0)	3.10
Concomitant diseases
Asthma	37	19.17
Other respiratory diseases	10	5.18
Hypertension	30	15.54
Thyroid diseases	13	6.73
Chronic urticaria	13	6.73
Anti-hypertensive agents
ACE-inhibitors	14	7.25
ARBs	9	4.66
Beta-blockers	13	6.73

No.: number, ACE: angiotensin converting enzyme, ARBs: angiotensin II receptor blockers