ObjectiveTo investigate the condensate pollution in the pipeline of severe pneumonia patients undergoing mechanical ventilation.MethodsFrom January 2017 to January 2019, 120 patients with severe pneumonia treated by mechanical ventilation in our hospital were collected continuously. The lower respiratory tract secretions were collected for bacteriological examination. At the same time, the condensed water in the ventilator exhaust pipe was collected for bacteriological examination at 4, 8, 12, 16, 20 and 24 hours after tracheal intubation and mechanical ventilation. The bacterial contamination in the condensed water at different time points was analyzed and separated from the lower respiratory tract. The consistency of bacteria in secretion and drug resistance analysis of bacterial contamination in condensate water were carried out.ResultsOf the 120 patients with severe pneumonia after mechanical ventilation, isolates were cultured in the lower respiratory tract secretions of 102 patients. One strain was cultured in 88 cases, two strains were cultured in 10 cases, and three strains were cultured in 4 cases. The isolates were mainly Gram-negative bacteria (57.5%) and Gram-positive bacteria (42.5%). The most common isolates were Pseudomonas aeruginosa, Staphylococcus aureus and Acinetobacter baumannii. The contamination rate of condensate water was 5.0% at 4 hours, 37.5% at 8 hours, 60.0% at 12 hours, 76.7% at 16 hours, 95.0% at 20 hours, and 100.0% at 24 hours, respectively. The bacterial contamination rate in condensate water at different time points was statistically significant (P=0.000). The pollution rate at 4 hours was significantly lower than that at 8 hours (P=0.000). Gram-negative bacteria accounted for 57.5% and Gram-positive bacteria accounted for 42.5%. The most common isolates were Staphylococcus aureus, Pseudomonas aeruginosa and Acinetobacter baumannii. The consistency of bacteria in lower respiratory tract and condensate water was 83.3% in severe pneumonia patients undergoing mechanical ventilation. The overall resistance of Pseudomonas aeruginosa, Acinetobacter baumannii and Staphylococcus aureus was higher, but the resistance to imipenem/cilastatin was lower.ConclusionsThe bacterial contamination in the condensate of patients with severe pneumonia during mechanical ventilation is serious. The pollution rate is low within 4 hours. It is consistent with the bacterial contamination in lower respiratory tract and the bacterial resistance is high.
Objective To analyze the case data of children with maxillofacial skin lacerations and provide a reference for the diagnosis and treatment of maxillofacial skin lacerations in children. Methods The medical records of children with maxillofacial skin lacerations who underwent emergency cosmetic suturing at the Lingang Branch of Yibin Second People’s Hospital between March 2023 and March 2024 were retrospectively collected. The clinical characteristics, diagnosis, treatment, and follow-up of the children were analyzed and summarized. Results A total of 210 children with maxillofacial skin lacerations were included, of which 142 were boys, accounting for 67.62%. The age of the children was most common at 3 years old, accounting for 18.57% (39 cases). A total of 5 children had two lacerations, 3 cases of which were in the same location and 2 cases were not in the same location. The most common site of skin laceration in children was the forehead, accounting for 46.23% (98 cases). The most common cause of maxillofacial skin lacerations was spontaneous falls, accounting for 51.43% (108 cases). The maxillofacial skin lacerations of the children were mainly minor injuries (168 cases, accounting for 80.00%). All children underwent modified vertical mattress suture, and the postoperative satisfaction of the children families was relatively high. Finally, 37 children were successfully followed up, and the follow-up results showed that the wound healing of the maxillofacial skin lacerations were good, the skin scars were not obvious, and the appearance of the skins were basically normal. Conclusion For children with maxillofacial skin lacerations, using the modified vertical mattress suture for emergency cosmetic suturing is beneficial for their injury recovery and facial aesthetics.