Year | Ventilator cases | L-piece (n) | Percent using L-piece | Sex | Success | Failure | Success rate | |
---|---|---|---|---|---|---|---|---|
Male | Female | |||||||
2012 | 152 | 34 | 22.4% | 16 | 18 | 32 | 2 | 94.1% |
2013 | 155 | 43 | 27.7% | 23 | 20 | 41 | 2 | 95.4% |
2014 | 173 | 39 | 22.5% | 30 | 9 | 38 | 1 | 97.4% |
2015 | 101 | 27 | 26.7% | 19 | 8 | 25 | 2 | 92.6% |
Total | 581 | 143 | 24.9% | 88 | 55 | 136 | 7 | 95.1% |
Factors (n =143) | Success group (n = 136) | Failure group (n = 7) | Odds ratio | 95% CI | |||
---|---|---|---|---|---|---|---|
Cases | Percentage | Cases | Percentage | ||||
18–40 | 9 b = No significant difference between ages 18–40 and 41–60 years, or between ages 18–40 and 61–80 years | 100.0 | 0 | 0.0 | – | – | 1.0000ns |
41–60 | 50 a = Fisher’s exact test, ns = not significant. | 96.2 | 2 | 3.8 | 1 | ||
61-80 | 77 a = Fisher’s exact test, ns = not significant. | 93.9 | 5 | 6.1 | 0.6 | 0.1–4.0 | 0.5682ns |
Active smoker | 29 a = Fisher’s exact test, ns = not significant. | 96.7 | 1 | 3.3 | 1 | ||
Nonsmoker | 71 a = Fisher’s exact test, ns = not significant. | 94.7 | 4 | 5.3 | 0.6 | 0.01–6.6 | 1.0000ns |
Quit | 36 a = Fisher’s exact test, ns = not significant. | 94.7 | 2 | 5.3 | 0.6 | 0.01–12.0 | 1.0000ns |
Male | 86 a = Fisher’s exact test, ns = not significant. | 97.7 | 2 | 2.3 | 1 | ||
Female | 50 a = Fisher’s exact test, ns = not significant. | 90.9 | 5 | 9.1 | 0.2 | 0.02–1.5 | 0.1070ns |
2–4 days | 69 a = Fisher’s exact test, ns = not significant. | 95.8 | 3 | 4.2 | 1 | ||
5–7 days | 38 a = Fisher’s exact test, ns = not significant. | 95.0 | 2 | 5 | 0.8 | 0.1–10.3 | 1.0000ns |
8–10 days | 16 c = No significant difference between duration of intubation in 2–4 and 8–10 days, or 2–4 and >14 days. | 100.0 | 0 | 0.0 | – | – | 1.0000™ |
11–14 days | 5 a = Fisher’s exact test, ns = not significant. | 71.4 | 2 | 28.6 | 0.1 | 0.01-1.7 | 0.06ns |
>14 days | 8 c = No significant difference between duration of intubation in 2–4 and 8–10 days, or 2–4 and >14 days. | 100.0 | 0 | 0.0 | – | – | 1.0000ns |
Acute on top of chronic | 27 e = No significant difference between acute on top chronic respiratory disease group and other groups. | 100.0 | 0 | 0.0 | – | – | 1.000ns |
respiratory disease | |||||||
New respiratory disease | 25 a = Fisher’s exact test, ns = not significant. | 92.6 | 2 | 7.4 | 1 | ||
Congestive heart failure | 41 a = Fisher’s exact test, ns = not significant. | 97.6 | 1 | 2.4 | 3.3 | 0.2–198 | 0.556ns |
Neuromuscular disease | 0 | 0.0 | 0 | 0.0 | – | – | – |
Cardiopulmonary arrest | 13 f = No significant difference between cardiopulmonary arrest group and other groups. | 100.0 | 0 | 0.0 | – | < | >0.99ns |
Other | 30 a = Fisher’s exact test, ns = not significant. | 88.2 | 4 | 11.8 | 0.6 | 0.1–4.6 | 0.685ns |
1–3 L/min | 47 a = Fisher’s exact test, ns = not significant. | 92.2 | 4 | 7.8 | 1 | ||
4–6 L/min | 89 a = Fisher’s exact test, ns = not significant. | 96.7 | 3 | 3.3 | 2.5 | 0.4-17.8 | 0.248™ |
<40 years old | 64 a = Fisher’s exact test, ns = not significant. | 92.8 | 5 | 7.2 | 1 | ||
41–60 years old | 60 a = Fisher’s exact test, ns = not significant. | 98.4 | 1 | 1.6 | 4.7 | 0.5, 225.3 | 0.213ns |
61–80 years old | 11 g = No significant difference between rapid shallow breathing index during ventilator support between the 61–80-year-old age group and other age groups. | 100.0 | 0 | 0.0 | – | – | 1.000ns |
>80 years old | 1 a = Fisher’s exact test, ns = not significant. | 50.0 | 1 | 50.0 | 0.1 | 0.001, 7.4 | 0.163ns |
4.0–6.0 L/min | 12 | 100.0 | 0 | 0.0 | – | – | 1.000ns |
6.1–8.0 L/min | 43 a = Fisher’s exact test, ns = not significant. | 91.5 | 4 | 8.5 | 1 | ||
8.1–10.0 L/min | 54 a = Fisher’s exact test, ns = not significant. | 96.4 | 2 | 3.6 | 2.5 | 0.3, 28.7 | 0.408ns |
>10 L/min | 27 a = Fisher’s exact test, ns = not significant. | 96.4 | 1 | 3.6 | 2.5 | 0.2, 128.2 | 0.645ns |
90–92% | 7 | 100.0 | 0 | 0.0 | – | – | 1.000ns |
93–95% | 12 a = Fisher’s exact test, ns = not significant. | 92.3 | 1 | 7.7 | 1 | ||
96–98% | 27 a = Fisher’s exact test, ns = not significant. | 96.4 | 1 | 3.6 | 2.3 | 0.03, 183.0 | 0.539ns |
99–100% | 90 a = Fisher’s exact test, ns = not significant. | 94.7 | 5 | 5.3 | 1.5 | 0.03, 15.1 | 0.546ns |
Vital signs | |||||||||
---|---|---|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | Mean | SD | ||||
On ventilator support | 18.2 | 3.8 | 19.4 | 6.0 | 18.3 | 3.8 | |||
On L-piece | 19.6 | 3.8 | <0.001* | 23.7 | 2.9 | 0.107ns | 19.8 | 3.9 | <0.001* |
On ventilator support | 94.0 | 12.8 | 93.7 | 10.8 | 94.0 | 12.6 | |||
On L-piece | 95.8 | 12.0 | 0.044* | 88.0 | 15.6 | 0.091ns | 95.4 | 12.3 | 0.099ns |
On ventilator support | 86.3 | 15.0 | 86.7 | 9.8 | 86.4 | 14.8 | |||
On L-piece | 87.1 | 14.8 | 0.452ns | 97.6 | 23.6 | 0.173ns | 87.6 | 15.3 | 0.22ns |
On ventilator support | 37.0 | 0.7 | 37.1 | 0.7 | 37.1 | 0.7 | |||
On L-piece | 36.9 | 0.5 | 0.035* | 37.2 | 0.9 | 0.553ns | 37.0 | 0.5 | 0.056ns |
On ventilator support | 98.5 | 2.2 | 99.9 | 0.4 | 98.5 | 2.2 | |||
On L-piece | 98.5 | 2.6 | 0.93ns | 98.7 | 2.0 | 0.11ns | 98.5 | 2.5 | 0.81ns |
Case | Sex | Age (y) | Duration of intubation (days) | Reason for intubation | Reintubation time | Reason for reintubation | Final result |
---|---|---|---|---|---|---|---|
1 | F | 79 | 2 | Others | <24 h | Vocal cord edema | Weaning L-piece; success, discharged |
2 | M | 68 | 6 | Congestive heart failure | <24 h | Pulmonary edema | Weaning L-piece; success, discharged |
3 | F | 45 | 14 | Others | 36 h | Secretion obstruction | Weaning L-piece; success, discharged |
4 | F | 74 | 11 | New respiratory disease | <24 h | Secretion obstruction | Tracheostomy, discharged |
5 | F | 55 | 3 | Others | <24 h | Alteration of consciousness | Self extubation, discharged |
6 | F | 62 | 5 | Others | <24 h | Vocal cord edema | Weaning L-piece; success, discharged |
7 | M | 78 | 2 | New respiratory disease | <24 h | Secretion obstruction | Tracheostomy, discharged |