Impact of the SARS-CoV-2 pandemic on the course and treatment of appendicitis in the pediatric population.

SARS-CoV-2 is a highly contagious virus causing mainly respiratory track disease called COVID-19, which dissemination in the whole world in the 2020 has resulted in World Health Organisation (WHO) announcing the pandemic. As a consequence Polish Government made a decision to go into a lockdown in order to secure the population against SARS-CoV-2 outbreak what had its major influence on the Polish Health Care System. All of the social and medical factors caused by the pandemic might influence children's health care, including urgent cases. The aim of this survey was the analysis of medical charts with focus on the course and results of surgical treatment of children who underwent appendectomy before and during the COVID-19 pandemic. Material and methods: We performed analysis of charts of 365 subjects hospitalized in the Pediatric Surgery Department from 1st January 2019 to 31st December 2020 because of acute appendicitis. Patients were divided into two groups-those treated in 2019-before pandemic outbreak, and those treated in 2020 in the course of pandemic. Results: the most common type of appendicitis was phlegmonous (61% of cases in 2019 and 51% of cases in 2020). Followed by diffuse purulent peritonitis (18% of cases in 2019 vs 31% of cases in 2020), gangrenous (19% of cases in 2019 vs 15% of cases in 2020) and simple superficial appendicitis (1% of cases in 2019 vs 3% of cases in 2020). There was statistically significant difference in the length of hospitalization: in 2019 the mean length of hospi-talization was 4.761 vs 5.634 in 2020. Laparoscopic appendectomy was performed more frequently before the COVID period (63% of cases treated in 2019 vs 61% of cases treated in 2020). In the pandemic year 2020, there was double increase in the number of conversion from the laparoscopic approach to the classic open surgery. In the year 2019 drainage of abdominal cavity was necessary in 22% of patients treated with appendectomy, in 2020 the amount of cases threated with appendectomy and drainage increased to 32%. Conclusions: fear of being infected, the limited availability of appointments at General Practitioners and the new organisation of the medical health care system during pandemic, delay proper diagnosis of appendicitis. Forementioned delay leads to higher number of complicated cases treated with open appendectomy and drainage of abdominal cavity, higher number of conversions from the laparoscopic to classic open technique, and longer hospitalization of children treated with appendectomy in the year of pandemic.

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