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Poonam Singh

London: Abnormally high blood sugar may worsen outcomes and mortality rates for Covid-19 patients, including those without diabetes, claimed researchers now in a major study.

The findings show patients with abnormally high glucose levels were more than twice as likely to die from the virus than those with normal readings (41.4 per cent compared to 15.7 per cent).

The study, published in the journal Annals of Medicine, is based on more than 11,000 non-critically ill hospital patients in Spain.

It adds to evidence that hyperglycaemia -- the medical term for high blood glucose -- is associated with a higher chance of death independent of a diabetes diagnosis.

Hyperglycaemic patients also have an increased need for ventilator and intensive care admission (ICU).

"Screening for hyperglycaemia in patients without diabetes and early treatment should be mandatory in the management of patients hospitalized with Covid-19," said study author Javier Carrasco from Juan Ramon Jimenez University Hospital in Spain.

"Admission hyperglycaemia should not be overlooked, but rather detected and appropriately treated to improve the outcomes of Covid-19 patients with and without diabetes," Carrasco added.

Hyperglycaemia is a common problem for diabetics but can also be triggered by illness or injury.

Studies have previously linked acute cases with complications in diabetic and non-diabetic hospital patients and observed similar associations among people with Covid-19.

In this study, the aim was to investigate a link between hyperglycaemia and time spent in the hospital, mechanical ventilation, ICU admission and mortality, but independent of a diabetes diagnosis.

Data were analysed from a national registry which has been collating information from more than 100 hospitals in Spain during the pandemic.

A total of 11,312 patients were included aged 18 or above who were admitted from March to the end of May.

They were categorised into three groups relating to their blood glucose levels and ranging from normal to high. A total of 19 per cent had an existing diabetes diagnosis.

The findings showed that patient blood glucose levels as measured on arrival in the hospital were independently related to ICU admission, mechanical ventilation and/or death, regardless of diabetes status.

One in five patients died in hospital, with mortality rates highest among those with the greatest blood glucose levels. No difference was found between death rates for those with diabetes and those who did not have the disease.

(With IANS Inputs)

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