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COVID-19 patients who undergo surgery risk post-operative death — Study

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By Chioma Obinna

A new global study has shown that patients undergoing surgery after contracting coronavirus are at increased risk of post-operative death.

In a study published in The Lancet, researchers found that amongst SARS-CoV-2 infected patients, who underwent surgery, mortality rates approach those of the sickest patients admitted to intensive care after contracting the virus.

The researchers examined data for 1,128 patients from 235 hospitals. A total of 24 countries participated, predominantly in Europe, although hospitals in Africa, Asia, and North America also contributed.

Experts at the University of Birmingham-led NIHR Global Research Health Unit on Global Surgery have now published their findings that SARS-CoV-2 infected patients who undergo surgery experience substantially worse post-operative outcomes than would be expected for similar patients who do not have SARS-CoV-2 infection.

Overall, 30-day mortality in the study was 23.8 percent. Mortality was disproportionately high across all subgroups, including elective surgery (18.9 percent), emergency surgery (25.6 percent), minor surgery such as appendicectomy or hernia repair (16.3 percent), and major surgery such as hip surgery or colon cancer surgery (26.9 percent).

The study identified that mortality rates were higher in men (28.4percent) versus women (18.2 percent), and in patients aged 70 years or over (33.7 percent) versus those aged under 70 years (13.9percent).

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In addition to age and sex, risk factors for postoperative death included having severe pre-existing medical problems, undergoing cancer surgery, undergoing major procedures, and undergoing emergency surgery.

According to the co-author AneelBhangu, Senior Lecturer in Surgery at the University of Birmingham, “we would normally expect mortality for patients having minor or elective surgery to be under 1 percent, but our study suggests that in SARS-CoV-2 patients these mortality rates are much higher in both minor surgery (16.3%) and elective surgery (18.9%).

“In fact, these mortality rates are greater than those reported for even the highest-risk patients before the pandemic.

“We recommend that thresholds for surgery during the SARS-CoV-2 pandemic should be raised compared to normal practice.

“For example, men aged 70 years and over undergoing emergency surgery are at particularly high risk of mortality, so these patients may benefit from their procedures being postponed.”

Also, a Professor of Paediatric Surgery at the University of Lagos and Consultant Paediatric Surgeon at the Lagos University Teaching Hospital, Prof Adesoji Ademuyiwa, who also participated in the study, said: “This study has shown clearly that non-emergent and non-urgent surgery during the period of the COVID-19 pandemic is associated with higher mortality rates.

“The outcomes of surgery in COVID-19 positive patients are much poorer than those without the disease and the degree of morbidity and mortality in patient who even underwent minor surgeries is comparable with those of life-threatening conditions in the pre-pandemic period.”

Ademuyiwa, who doubles as the Director of the NIHR Global Surgery Unit in Lagos stated: “A recent estimate showed that in Nigeria, at least about 120,000 surgeries must have been postponed due to the pandemic and without doubt.

“The result of this current study showed that it was sound reasoning for hospitals in the country to have postponed elective and non-critical surgeries during the pandemic. That decision must have saved lives, limbs and organs.”

The study found that overall, in the 30 days following surgery, 51 percent of patients developed pneumonia, acute respiratory distress syndrome, or required unexpected ventilation.

This may explain the high mortality, as most (81.7%) patients who died had experienced pulmonary complications.

Report co-author, Dmitri Nepogodiev, Research Fellow at the University of Birmingham, said: “Worldwide, an estimated 28.4 million elective operations were cancelled due to disruption caused by COVID-19.

“Our data suggests that it was the right decision to postpone operations at a time when patients were at risk of being infected with SARS-CoV-2 in hospital.

“There’s now an urgent need for investment by governments and health providers into measures to ensure that as surgery restarts patient safety is prioritised.

“This includes provision of adequate personal protective equipment, PPE, establishment of pathways for rapid preoperative SARS-CoV-2 testing, and consideration of the role of dedicated ‘cold’ surgical centres.”

Vanguard

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