Prophylactic Norepinephrine Infusion Reduces Postoperative Complications and Hospitalization Time in Elderly Patients Undergoing Posterior Lumbar Spinal Fusion

Table 2

Intraoperative hemodynamics in 120 patients undergoing spinal fusion surgery.

		Control group ()	Norepinephrine group ()	value
MAP	Ta			0.123
	Tb			0.000
	Tc			0.011
	Td			0.182
HR	Ta			0.876
	Tb			0.000
	Tc			0.000
	Td			0.053
PPV	Tb			0.292
	Tc			0.436
	Td			0.114

MAP: mean arterial pressure; HR: heart rate; PPV: pulse pressure variation.