Acute hypervolemic hemodilution combined with controlled hypotension to minimize blood loss during operations of spine fusion: remifentanil versus magnesium sulfate

Ain-Shams Journal of Anesthesiology

Table 7 Coagulation profile, electrolytes, and urine output in the three study groups

	Group I (N = 18)	Group II (N = 20)	Group III (N = 19)	p value
PT before operation	12.9 ± 1.2	13.4 ± 1.3	13.2 ± 1.3	0.227
PT 30 min after AHH	13.9 ± 1.2⁺	14.3 ± 1.2⁺	14.1 ± 1.2⁺	0.0174
PTT before operation	29.1 ± 3.3	28.7 ± 2.9	30.1 ± 2.5	0.115
PTT30 min after AHH	34.2 ± 4.2⁺	33.5 ± 5.4⁺	35.2 ± 3.1⁺	< 0.001
Na⁺ before operation	138.2 ± 7.9	140.2 ± 6.1	142.2 ± 5.4	0.079
Na⁺ 30 min after AHH	137.3 ± 8.4	139.6 ± 5.4	141.3 ± 4.4	0.289
K⁺ before operation	3.9 ± 1.2	3.7 ± 1.1	3.8 ± 1.3	0.595
K⁺ 30 min after AHH	3.7 ± 1.2	3.5 ± 1.2	3.6 ± 1.2	0.611
Cl^- before operation	103.2 ± 3.7	101.2 ± 5.3	104.2 ± 3.9	0.0524
Cl^- 30 min after AHH	102.4 ± 5.9	103.4 ± 5.1	105.4 ± 5.6	0.121
Urine output at the end of operation	912 ± 211	887 ± 227	895 ± 241	0.728

-PT prothrombin time, PTT partial thromboplastin time, Na⁺ sodium, K⁺ potassium, Cl chloride, CVP central venous pressure. Data are presented as mean ± SD.
-p < 0.05 is considered significant.
-⁺Significant for comparison with the baseline inside each group