Performance
The median duration of surgery was 130 min (range, 35-300 min). The duration of general anesthesia was 165 min (range, 55-370 min). In the first period (air), the median SpO 2 was 96%(range, 84-100%) and the HR was 84 beats/min (range, 56-160 beats/min). During oxygen supplementation, SpO 2 increased to 99%(range, 94-100%; P < 0.0001), and the HR decreased to 81 beats/min (range, 57-125 beats/min; P < 0.0001). In the second period with air, SpO 2 was 96%(range, 84-100%) and the HR was 85 beats/min (range, 60-144 beats/min;Figure 1A and Figure 1B). There was no significant difference in HR (P = 0.49) or SpO 2 (P = 0.45) between the two periods of air treatment. Overall, 73 of 100 patients responded with decreased HRs with oxygen treatment.
Figure 1. (A) Heart rate and (B) arterial oxygen saturation (SpO 2 ) after oxygen supplementation or air by random order (medians and quartiles)*P < 0.0001 by the Wilcoxon test (n = 100).
Figure 1. (A) Heart rate and (B) arterial oxygen saturation (SpO 2 ) after oxygen supplementation or air by random order (medians and quartiles)*P < 0.0001 by the Wilcoxon test (n = 100).
(Figure 2A and Figure 2B) show the change in HR during oxygen therapy, Delta HR, in relation to prestudy-control SpO 2 and HRparing Delta HR for the defined subgroups of initial HRs, we found a significant reduction in HR with oxygen in the patients with initial HRs of 110 beats/min or more compared with patients with HRs of 70 beats/min or less (P < 0.006) and in patients with HRs between 71 and 109 (P < 0.02). Furthermore, when we applied the Kruskal-Wallis test, we found a significant overall intergroup difference between patients with HRs of 70 beats/min or less, between 71 and 109 beats/min, and 110 beats/min of more (P = 0.02). The linear regression analysis of initial HR versus Delta HR was significant (r = 0.30, P = 0.002), but the Spearman correlation test was not significant (r ( s )= 0.17, P = 0.09).
Profile dos. Changes in heartbeat (Delta Hours) shortly after oxygen supplementation getting outlined subgroups off arterial oxygen saturation (SpO dos ) which have air (A) and you will pulse rate (HR) which have air (B)(medians and quartiles). Brand new Kruskal-Wallis shot produced P = 0.several in the An effective and you can P = 0.02 for the B.
Contour dos. Alterations in heartbeat (Delta Hr) immediately following clean air supplements having outlined subgroups off arterial clean air saturation (SpO dos ) having air (A) and pulse rate (HR) with heavens (B)(medians and you may quartiles). The newest Kruskal-Wallis test yielded P = 0.twelve in A good and you can P = 0.02 from inside the B.
To have mathematical analyses, i utilized the Spearman relationship try, a great linear regression data, the fresh Wilcoxon closed score shot, the fresh new Mann-Whitney U shot, while the Kruskal-Wallis decide to try fixed having ties
Customers having initially lowest SpO dos philosophy had a pattern with the a more obvious lack of Hours that have oxygen therapy, even though this was not significant (P = 0.06 and you can P = 0.12;Figure 2A). Outcome of this new linear regression analysis (P = 0.18) and also the correlation attempt (P = 0.37) anywhere between very first SpO 2 and Delta Hours weren’t high.
Thirty-five patients have been learned with the postoperative date 1, thirty-two to your postoperative date 2, 19 for the postoperative big date step three, and you will 14 into postoperative big date 4. Zero significant variations in Hr which have heavens or outdoors (P = 0.step 3 and P = 0.4), alterations in Hr (P = 0.5) http://www.datingranking.net/dating-over-60/, SpO 2 having heavens or oxygen (P = 0.06 and P = 0.5), or changes in SpO dos (P = 0.052) were located between people learnt to the other postoperative days.