Objective To summarize the pathogen distribution and antibiotic resistance characteristics of 69 cases of necrotizing fasciitis(NF),providing evidence to support early clinical antimicrobial therapy.Methods A retrospective analysis was conducted on microbial culture and antibiotic susceptibility test results from 69 NF cases treated in the Department of Trauma Repair and Burn Plastic Surgery,Liuzhou Workers'Hospital from January 2017 to December 2023.Results A total of 77 bacterial strains were cultured,including 24 Gram-positive bacteria,48 Gram-negative bacteria,and 5 fungi.Monomicrobial infection was predominant,accounting for 66.07％of the cases.Among the Gram-positive bacteria,Staphylococcus aureus was the most common,separated out 10 strains(12.99％),followed by Streptococcus pyogenes in 5 strains(6.49％).Among the Gram-negative bacteria,Klebsiella pneumoniae(13 strains,16.88％)and Escherichia coli(10 strains,12.99％)were most frequently identified.A total of 18 multidrug-resistant strains were found,representing 23.38％of all isolates.Gram-positive bacteria were most sensitive to vancomycin,linezolid,and tigecycline,while Gram-negative bacteria showed the greatest sensitivity to meropenem,cefoperazone,and ertapenem.Conclusion In the study area,Klebsiella pneumoniae is the most common pathogen causing NF.The initial antimicrobial regimen should include vancomycin combined with meropenem,which may significantly enhance the effectiveness of infection control.

Objective To summarize the pathogen distribution and antibiotic resistance characteristics of 69 cases of necrotizing fasciitis(NF),providing evidence to support early clinical antimicrobial therapy.Methods A retrospective analysis was conducted on microbial culture and antibiotic susceptibility test results from 69 NF cases treated in the Department of Trauma Repair and Burn Plastic Surgery,Liuzhou Workers'Hospital from January 2017 to December 2023.Results A total of 77 bacterial strains were cultured,including 24 Gram-positive bacteria,48 Gram-negative bacteria,and 5 fungi.Monomicrobial infection was predominant,accounting for 66.07％of the cases.Among the Gram-positive bacteria,Staphylococcus aureus was the most common,separated out 10 strains(12.99％),followed by Streptococcus pyogenes in 5 strains(6.49％).Among the Gram-negative bacteria,Klebsiella pneumoniae(13 strains,16.88％)and Escherichia coli(10 strains,12.99％)were most frequently identified.A total of 18 multidrug-resistant strains were found,representing 23.38％of all isolates.Gram-positive bacteria were most sensitive to vancomycin,linezolid,and tigecycline,while Gram-negative bacteria showed the greatest sensitivity to meropenem,cefoperazone,and ertapenem.Conclusion In the study area,Klebsiella pneumoniae is the most common pathogen causing NF.The initial antimicrobial regimen should include vancomycin combined with meropenem,which may significantly enhance the effectiveness of infection control.

Injection lipolysis is emerging as an non-surgical cosmetic procedure in recent years. However related risks should be noted. Non-tuberculous mycobacterium infection caused by Injection lipolysis was rarely reported so far. In October 2020, a patient who developed infection at the injection site after receiving lipolysis injection in a beauty salon was admitted to the Fourth People’s Hospital of Chenzhou. The patient had multiple masses on his right upper arm, abdomen, waist and back, with a size of about 3 cm×4 cm. The local masses was red with high skin temperature, and there was obvious fluctuation and tenderness. Skin abcess was diagnosed. Abscess debridement was performed, the necrotic tissue in the abscess cavity was completely removed and continuous negative pressure drainage was performed. The biopsy showed chronic granulomatous lesions. The secretions were cultured and the results showed rapid growth of non-tuberculous mycobacteria. A microbial genetic test was carried out, and the result was Mycobacterium immunogenun. The medical treatment was amikacin for 1 month and clarithromycin for 6 months. No special discomfort was found during drug administration, and the affected skin was completely healed without recurrence after withdrawal of the drug for half a year.

Injection lipolysis is emerging as an non-surgical cosmetic procedure in recent years. However related risks should be noted. Non-tuberculous mycobacterium infection caused by Injection lipolysis was rarely reported so far. In October 2020, a patient who developed infection at the injection site after receiving lipolysis injection in a beauty salon was admitted to the Fourth People’s Hospital of Chenzhou. The patient had multiple masses on his right upper arm, abdomen, waist and back, with a size of about 3 cm×4 cm. The local masses was red with high skin temperature, and there was obvious fluctuation and tenderness. Skin abcess was diagnosed. Abscess debridement was performed, the necrotic tissue in the abscess cavity was completely removed and continuous negative pressure drainage was performed. The biopsy showed chronic granulomatous lesions. The secretions were cultured and the results showed rapid growth of non-tuberculous mycobacteria. A microbial genetic test was carried out, and the result was Mycobacterium immunogenun. The medical treatment was amikacin for 1 month and clarithromycin for 6 months. No special discomfort was found during drug administration, and the affected skin was completely healed without recurrence after withdrawal of the drug for half a year.

'Social beings' model of standardized training program for residents in Shanghai is one of the important measures in the health care reform. According to the requirements of the standardized training of residents in thoracic surgery, the article preliminarily explored the standardized training model for residents from four aspects such as individualized treatment of different professional backgrounds, focus-ing on the training needs of residents with different starting point of social beings, developing training programs for different training time and combining the master's degree graduate education. And based on the characteristics of thoracic surgery, it also summed up the past experience and explored the clinical practice teaching.

Objective To investigate the therapeutic effect of oral viaminate(a vitamine A acid derivative)on acne and its effect on the expression of androgen receptor.Methods Two hundred and eigh-teen patients with acne were allocated to treatment group and control group at random:treatment group was treated by oral viaminate;control group was treated by oral minocycline.The treatment lasted for four weeks.The effect of viaminate on the expression of androgen receptor was studied in COLO-16cells in vitro by using Northern blot or Western blot.Results The therapeutic effect of oral viaminate in treatment group was higher than that in control group(P