Table 1.

Patient characteristics

	(n = 386)
Age (years), median	60
Sex
Male	186 (48%)
Female	200 (52%)
BMI (kg/m2), median	26.8
ASA score*
I	82 (23%)
II	165 (46%)
III	103 (28%)
IV	11 (3%)
Diabetes mellitus (%)	33 (9%)
Hypertension (%)	109 (28%)
Cardiovascular comorbidities (%)	99 (26%)
Kidney failure (%)	10 (3%)

BMI, Body mass index, ASA, American Society of Anaesthesiologists;

^*Nine patients undergoing electric cardioversion were not seen in standard pre-operative screening, and 16 patients were screened but did not need surgical treatment. This explains why a total number of registered ASA scores do not combine to the total of 386 patients