Anesthesiology Research and Practice

Clinical Study

Comparison of the Clinical Use of Macintosh and Miller Laryngoscopes for Orotracheal Intubation by Second-Month Nurse Students in Anesthesiology

Table 3

Hemodynamic parameters: systolic and diastolic blood pressure (mmHg), heart rate (beat/minute), and oxygen saturation (SpO₂, %) (mean, SD).


	Macintosh	Miller	-value
	(59)	(47)	-value

Baseline
SBP, DBP	121.4 (11.9), 71.2 (9.6)	122.4 (16.5), 70.5 (13.4)	.113, .082
HR, SpO₂	81.0 (10.9), 99.8 (0.4)	76.0 (11.5), 99.7 (0.6)	.148, .129

At insertion
SBP, DBP	131.0 (19.1), 73.2 (12.0)	123.0 (20.0), 71.2 (14.0)	.145, .104
HR, SpO₂	80.5 (13.2), 99.8 (0.4)	78.3 (11.7), 99.9 (1.9)	.036*, .088

1 min
SBP, DBP	129.7 (18.1), 73.7 (10.5)	122.4 (16.0), 72.1 (12.2)	.270, .166
HR, SpO₂	80.2 (10.4), 99.8 (0.5)	79.6 (13.2), 99.6 (0.8)	.130, .361

2 min
SBP, DBP	130.0 (16.4), 77.3 (9.4)	123.8 (17.2), 73.8 (11.1)	.033, .032
HR, SpO₂	82.9 (10.0), 99.7 (0.7)	78.0 (11.6), 99.6 (0.7)	.088, .510

3 min
SBP, DBP	121.5 (12.6), 71.2 (9.3)	121.4 (16.6), 73.2 (9.7)	.315, .086
HR, SpO₂	80.5 (9.9), 99.7 (0.5)	77.6 (8.7), 99.7 (0.6)	.069, .610

Immediately after TT
SBP, DBP	131.4 (15.8), 76.6 (10.2)	132.8 (14.9), 85.6 (9.0)	.709, .024*
HR, SpO₂	85.1 (6.3), 99.6 (0.6)	93.7 (7.5), 99.6 (0.6)	.013*, .929

2 min after TT
SBP, DBP	120.8 (14.6), 74.4 (11.2)	132.6 (17.7), 77.2 (11.2)	.019*, .244
HR, SpO₂	84.3 (10.0), 99.6 (0.7)	82.6 (8.6), 99.8 (0.4)	.007*, .323

4 min after TT
SBP, DBP	121.3 (17.3), 73.0 (11.0)	128.7 (17.7), 77.1 (7.6)	.144, .172
HR, SpO₂	83.5 (10.2), 99.8 (0.4)	80.7 (7.0), 99.7 (0.4)	.142, .807

6 min after TT
SBP, DBP	118.3 (16.4), 70.5 (11.4)	123.7 (12.9), 76.3 (8.2)	.352, .196
HR, SpO₂	83.4 (9.5), 99.8 (0.5)	79.7 (7.4), 99.8 (0.4)	.087, .517

8 min after TT
SBP, DBP	117.6 (14.5), 69.6 (9.7)	122.5 (10.0), 76.3 (6.5)	.432, .231
HR, SpO₂	83.2 (8.3), 99.7 (0.7)	81.9 (6.2), 99.8 (0.4)	.162, .166

10 min after TT
SBP, DBP	120.6 (17.1), 71.9 (12.3)	113.2 (31.4), 73.3 (9.1)	.175, .181
HR, SpO₂	84.1 (7.5), 99.8 (0.5)	84.1 (7.5), 99.8 (0.5)	.177, .763

SBP: Systolic blood pressure; DBP: Diastolic blood pressure; HR: Heart rate; SpO₂: Oxygen.
Saturation; TT: Tracheal intubation.
*Considered to be of statistical significance.