Effects of Interscalene Nerve Block for Postoperative Pain Management in Patients after Shoulder Surgery

Table 3

Total amount of patient-controlled analgesia and rescue medications.

	PCAIB group	PCA group
Amount of medications (mL)
24 hours postoperatively	57.76 ± 23.29	87.29 ± 33.73	<0.001
48 hours postoperatively	114.86 ± 40.97	183.63 ± 44.83	<0.001

Continuous variables were described as mean ± standard deviation and independent -test was used; statistical significance was considered when < 0.05.
PCAIB: patients with interscalene block in combination with intravenous patient-controlled analgesia.
PCA: patients receiving intravenous patient-controlled analgesia alone without interscalene block.