ACE and asthma: A significant association was observed between the development of a severe reaction during the general anaesthesia and history of asthma (OR: 2.144, CI95%: 1.028 to 4.471; Wald’s test: p = 0.042) and ongoing treatment with ACE inhibitors (OR: 4.326, CI95%: 1.383 to 13.530; Wald’s test: p = 0.012) or ARBs (OR: 4.703, CI95%: 1.134 to 19.498; Wald’s test: p = 0.033).