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 4

Comparison of clinical symptoms improvement between the two groups ( ± S).

Group	Number of cases	Temperature recovery time (d)	Rales disappearing time (d)	White blood cell recovery time (d)	X-ray recovery time (d)
Observation group	44	7.69 ± 1.26	10.34 ± 2.32	11.63 ± 2.56	10.93 ± 2.14
Control group	40	9.57 ± 0.99	12.53 ± 2.96	13.74 ± 2.98	12.68 ± 2.28
χ ^2	—	7.603	3.774	3.481	3.627
value	—	<0.001	<0.001	<0.001	<0.001