A case series of continuous paravertebral block in minimally invasive cardiac surgery

JA Clinical Reports

Table 3 Relationship between PT-INR- and CPVB-related bleeding

PT-INR	Patients with CPVB-related bleeding	Patients without CPVB-related bleeding	OR (95%CI)	P value
PT-INR	n = 9	n = 78	OR (95%CI)	P value
≧ 1.0	9	51	9.53 (0.53–170.74)	0.061^a
< 1.0	0	27	9.53 (0.53–170.74)	0.061^a
≧ 1.1	6	22	5.09 (1.17–22.17)	0.0193^a
< 1.1	3	56	5.09 (1.17–22.17)	0.0193^a
≧ 1.2	5	7	12.68 (2.75–58.38)	0.0001^a
< 1.2	4	71	12.68 (2.75–58.38)	0.0001^a
≧ 1.3	3	4	9.25 (1.67–51.28)	0.0033^a
< 1.3	6	74	9.25 (1.67–51.28)	0.0033^a

Relationship between PT-INR- and CPVB-related bleeding
PT-INR international normalized ratio of prothrombin time, CPVB continuous paravertebral block, OR odds ratio
^aChi-square test