The effect of low central venous pressure on hepatic surgical field bleeding and serum lactate in patients undergoing partial hepatectomy: a prospective randomized controlled trial

Table 5 Coefficients^a of multivariate linear regression

	Unstandardized Coefficients		Standardized Coefficients	T value	P value
	B	Std. Error	Beta	T value	P value
Constant	− 280.338	206.928		−1.335	.178
No cirrhosis = 1; presence of cirrhosis = 2	−17.499	37.404	−.032	−.468	.641
Mean CVP value during PTC	−2.983	9.794	−.021	−.305	.761
Frequency of ephedrine	15.406	13.675	.086	1.127	.262
Operation time	1.766	.313	.423	5.637	.000*
Duration of all PTC	3.618	1.127	.229	3.209	.002*
Group F = 1; group L = 2	−1.347	39.607	−.003	−.034	.973
Minor hepatectomy = 1; major hepatectomy = 2	101.628	32.958	.204	3.084	.003*
SBP during PTC	.586	1.536	.027	.381	.704
Bleeding score of surgical field	22.289	16.281	.100	1.369	.173

^a: dependent variable: intraoperative blood loss. Group F: the fluid restriction group; Group L: the fluid restriction + low CVP group; CVP: central venous pressure; SBP: systolic blood pressure; PTC: portal trail clamping. * P < 0.05

ISSN: 1471-2482