Effects of Aerosol Inhalation Combined with Intravenous Drip of Polymyxin B on Bacterial Clearance, Symptoms Improvement, and Serum Infection Indexes in Patients with Pneumonia Induced by Multidrug-Resistant Gram-Negative Bacteria

Table 1

Comparison of general data of the two groups of patients (±s).

Group	Observation group (n = 44)	Control group (n = 40)	t/χ ^2	value
Gender			2.092	0.148
Male	29 (65.91)	32 (80.00)
Female	15 (34.09)	8 (20.00)
Age (year)	60.36 ± 2.98	60.77 ± 3.36
APACHE II (score)	14.36 ± 2.28	14.98 ± 2.44	0.593	0.556
Pathogenic bacteria (strain)			0.672	0.955
Pseudomonas aeruginosa	20 (14.49)	21 (15.22)
Acinetobacter baumannii	16 (11.59)	15 (10.87)
Escherichia coli	17 (12.32)	14 (10.14)
Staphylococcus aureus	12 (8.70)	13 (9.42)
Other	6 (4.35)	4 (2.90)
Combined hypertension			0.585	0.444
Yes	12 (27.27)	14 (35.00)
No	32 (72.73)	26 (65.00)
Combined coronary heart disease			1.006	0.316
Yes	10 (22.73)	13 (32.50)
No	34 (77.27)	27 (67.50)