Closed thoracic drainage in elderly patients with chronic obstructive pulmonary disease complicated with spontaneous pneumothorax: A retrospective study

Table 1 Comparison of basic information of indwelling pleural catheters group and central venous catheters group

Groups	Cases	Gender	Age (year)	BMI (kg/m2)
		Male/female		< 18.5	18.5-24.9	25-29.9	> 30
IPC group	42	26/16	69.81 ± 7.79	3	29	6	4
CVC group	18	11/7	71.06 ± 7.70	1	12	5	0
t/χ2		-0.57	-0.57	-0.167
P value		0.954	0.571	0.867

IPC: Indwelling pleural catheter; CVC: Central venous catheter; BMI: Body Mass Index.

Table 2 Comparison of clinical data between indwelling pleural catheters group and central venous catheters group, n (%)

Clinical data	IPC group (n = 42)	CVC group (n = 18)	t/χ2	P value
Lung recruitment time (d)	1.52 ± 0.27	2.92 ± 0.73	-10.783	0a
Operating time (min)	12.12 ± 1.09	13.00 ± 1.53	-2.533	0.014a
Catheters survival life (d)	4.73 ± 0.65	4.8 ± 0.75	-0.415	0.679
Hospitalization time (d)	6.21 ± 0.68	6.06 ± 0.73	0.811	0.421
Hospitalization costs (thousand yuan)	46.29 ± 9.65	43.89 ± 10.26	0.865	0.39
Effective	40 (95.2)	13 (72.2)	4.44	0.035a,b

^aSignificant difference between groups.

^bContinuous correction.

IPC: Indwelling pleural catheter; CVC: Central venous catheter.

Table 3 Comparison of catheterization complications between indwelling pleural

Complication	IPC group (n = 42)	CVC group (n = 18)	χ2	P value
Use of analgesics	6 (14.2)	1 (5.5)	0.277	0.599b
Catheter occlusions	2 (4.7)	7 (38.8)	8.988	0.003a,b
Catheter prolapse	6 (7.1)	7 (36.3)	4.494	0.034a
Subcutaneous emphysema	3 (7.1)	6 (33.3)	4.880	0.027a,b
Pulmonary infection	1 (2.3)	1 (9.0)	0	1b
Incision infection	1 (2.3)	1 (9.0)	0	1b

^aSignificant difference between groups.

^bContinuous correction.

IPC: Indwelling pleural catheter; CVC: Central venous catheter.

Table 4 Univariate analysis of patients with catheter prolapses, n (%)

Factors	CP group (n = 16)	nCP group (n = 44)	t/χ2	P value
Gender			0.006	0.936
Male	10	27
Female	6	17
Age (year)	68.38 ± 9.493	70.84 ± 6.975	-1.096	0.278
BMI (kg/m2)			1.899	0.618
< 18.5	1	3
18.5-24.9	13	28
25-29.9	2	9
> 30	0	4
Lung recruitment time (d)	2.30 ± 0.81	1.81 ± 0.75	2.226	0.06
Operating time (min)	12.69 ± 1.35	12.27 ± 1.26	1.103	0.274
Catheters survival life (d)	4.97 ± 0.81	4.68 ± 0.60	1.489	0.142
Hospitalization time (d)	6.13 ± 0.72	6.18 ± 0.69	-0.279	0.782
Hospitalization costs (thousand yuan)	47.25 ± 9.60	44.95 ± 9.93	0.799	0.428
Primary nurses working years ≤ 3	10 (62.5)	19 (43.18)	13.137	0a
APACHE-II score ≤ 15	6 (37.5)	11 (25)	9.201	0.02a
Not secured with sutures	11 (68.75)	19 (48.18)	13.611	0a
Not fixed twice	9 (56.25)	18 (40.90)	12.623	0a

^aSignificant difference between groups.

^bContinuous correction.

IPC: Indwelling pleural catheter; CVC: Central venous catheter; APACHE-II: Acute Physiology and Chronic Health Evaluation II.