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Completed

NCT Number: NCT05677815

The Effect of COVID-19 Infection on Post-operative Complications

We did an multi-centre, observational cohort study in patients who had surgery in 2023. We included participants who underwent surgery after the COVID-19 to lift the lockdown in China. Patients meeting the same criteria were eligible who had been treated during the same calendar period of 2019 through 2021. The primary outcomes were the post-operative in-hospital complications. We hypothesized that the post-operative in-hospital complications during the COVID-19 to lift the lockdown period in China were different to complications for the same kind of patients during the same calendar period of the previous years.

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Key information

Conditions

COVID-19 Coronaviridae Infections Coronavirus Infections Infections Lung Diseases Nidovirales Infections Pathologic Processes Pathological Conditions, Signs and Symptoms Pneumonia Pneumonia, Viral Postoperative Complications RNA Virus Infections Respiratory Tract Diseases Respiratory Tract Infections Surgery Virus Diseases

Sex eligibility

All sexes

Study type

Observational

Primary location

Xijing Hospital

Xi'an, Shaanxi, 710032, China

About this study

The outbreak of COVID-19 and its global pandemic have posed a threat to public health. The deadly virus, SARS-CoV-2, has been evolving to new, more infectious variant and other lineages with additional immune escape mutations. The highly transmissible Omicron variant has been present for around one year and has supplanted Delta as the leading strain in the global pandemic. Despite the fact that 656 million people have been infected with SARS-CoV-2 worldwide as of January 1, 2023, asymptomatic infections and mild cases account for more than 90% because of its notably declined pathogenicity.As of December 20, 2022, more than 130 sub-branches of Omicron have been imported into China, with BA.5.2 and BF.7 being the most prevalent strains.

On December 7, 2022, the State Council of China issued an announcement on further optimization of measures for preventing and controlling the COVID-19 epidemic ( easing of rigorous "zero COVID" policies). Since then, the rapid spread of COVID-19 has caused a surge of COVID-19 infections in the majority of China. As of January 6, a total of 503302 individuals have been infected. Consequently, the proportion of surgical patients with current or previous SARS-CoV-2 infections will inevitably increase within a short period of time. It has been reported that recovery from SARS-CoV-2 infection is associated with a transiently elevated risk of postoperative complications. The longer the time interval between SARS-CoV-2 infection and surgery, the lower the risk of postoperative complications. An updated recommendation suggested postponing surgery for at least seven weeks following SARS-CoV-2 infection, thereby reducing the risk of postoperative complications and 30-day mortality to baseline levels (similar risk with patients without a history of SARS-CoV-2 infection). However, these recommendations were based on limited data from the earlier Covid-19 pandemic (mostly caused by the Delta strain) in Europe and the United States It may not be feasible to generalize and apply this experience and consensus to the Chinese population and use it to guide current practice.

In this prospective cohort study, the postoperative complications will be described and compared in patients with or without Covid-19 infection. In addition, risk factors in the patients and surgical levels that are associated with an increase in postoperative morbidities and mortalities will be assessed.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Underwent surgery at Xijing Hospital after the COVID-19 to lift the lockdown in China, effective as of 29th December in 2022 to 7th January in 2023.

Exclusion criteria

  • Patients who had missing primary information data (i.e., postoperative information).

Treatment and study plan

Underwent Surgery from 2019 to 2022

Procedure

Surgery was defined as any procedure done by a surgeon in an operating theatre under general, regional, or local anaesthesia

Primary outcomes

  1. Post-operative complications

    Time frame: postoperative in-hospital or 7-day complication

    Any postoperative in-hospital or 7-day complications, were based on the Clavien-Dindo Classified, and more than 0 grade was defined as complication.

Secondary outcomes

  1. Severe post-complications

    Time frame: postoperative in-hospital or 7-day complication

    The complications classified greater than Clavien-Dindo II were defined as severe; ie, any complications that led to a reintervention (III), a life-threatening organ dysfunction (IV), or death (V).

  2. in-hospital mortality

    Time frame: postoperative in-hospital or 7-day complication

    The proportion of patients who died during hospitalization post-operatively.

  3. Critical care admission

    Time frame: postoperative in-hospital or 7-day complication

    The proportion of patients who admitted to ICU post-operatively.

  4. Duration post-operative hospital stay

    Time frame: postoperative in-hospital or 7-day complication

    The time from end of operation to discharge from hospital

Sponsors and collaborators

Lead sponsor

Xijing Hospital

Other

Registry information

Official study title

The Effect of COVID-19 Infection on Post-operative Complications in Patients Underwent Surgery During the COVID-19 to Lift the Lockdown in China: Cohort Stdy

Important dates

Study start
2023
Primary completion
2023
Study completion
2023
First posted
Jan 10, 2023
Registry last updated
Apr 6, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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