Table 1.

Time points and measurements

Measurements	T0	T1	T2	T3
STAI-6	X		X
NRS-P	X			X
Systolic blood pressure (mmHg)	X	X	X	X
Diastolic blood pressure (mmHg)	X	X	X	X
Heart rate (beats per minute)	X	X	X	X
Recommendation grade			X
Experience grade			X

T0 pre-operative; T1 intra-operative; T2 15 min post-operative; T3 2 h post-operative