Nocturnal Hypoventilation in the Patients Submitted to Thoracic Surgery

Table 2

Comparison of the values obtained in capnography in the whole group during preoperative and postoperative nights in the patients submitted to thoracic surgery.

	Preoperative		Postoperative
	Mean	SD	Mean	SD
Mean tcpCO2 (mmHg)	44.4	5.2	45.5	5.9	NS
Minimal tcpCO2 (mmHg)	39.6	4.8	40.8	4.8	=0.040
Maximal tcpCO2 (mmHg)	49.3	6.9	51.1	7.6	NS
Mean SpO2 (%)	94.8	1.9	93.2	5.9	=0.020
Minimal SpO2 (%)	87.2	5.6	83.8	8.1	=0.001
Maximal SpO2 (%)	98.2	1.2	97.3	2.7	=0.018

NS: not statistically significant.