Stroke Patients Infected with Covid-19 Take Longer Time to Recover

29 Octobre, 2020, 19:46 | Auteur: Yves Courtet
  • 14 in every 1,000 Covid-19 hospital patients have a stroke, finds University of Cambridge study

While 34 (77.4%) were male patients, 26 % (16/62) of patients did not have any conventional risk factors for stroke. Dr Rawat said the hospital saw the Covid-stroke manifestations in April-May period. In total, the researchers analysed 61 studies, covering more than 100,000 patients admitted to hospital with the coronavirus.

The results of the study are published today in the International Journal of Stroke.

Smorol says Living a healthy lifestyle is the best way to avoid strokes and heart disease, eating fruits and vegetables and exercising.

According to Fortis Hospital's Dr Rajesh Benny, stroke in Covid patients usually occurs in the second week of the infection.

Professor Hugh Markus, who leads the Stroke Research Group at Cambridge, said: "Even though the incidence of stroke among Covid-19 patients is relatively low, the scale of the pandemic means that many thousands of people could potentially be affected worldwide". For each minute lost without treatment, the brain loses 1.9 million neurons and for each hour lost without treatment brain ages by 3.6yrs. Dr. Amit Srivastava, a neurologist at PSRI Hospital, explains that this disease is cured in a short time by recognizing the symptoms of stroke in time and getting immediate treatment.

Numerous risk factors for stroke such as uncontrolled high blood pressure, smoking, and obesity also increase the risk of severe illness from COVID-19, so it's critical to manage those risks.

However, the researchers warned that many cases of COVID-19 are asymptomatic, causing no symptoms at all. The medication is given for dissolving the clot (clot-busting therapy) or in some cases if a patient needs surgical removal of the clot (mechanical thrombectomy), the window of opportunity is narrow and these treatment options can only be offered to patients within the initial 4.5-6hrs of the onset of stroke symptoms.

There was no sex difference and no significant difference in rates of smokers versus non-smokers when it came to developing a stroke. The mortality rate among those patients was also higher.

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Out of 1,655 patients who had enough data to be analysed, 31.5 per cent died.

Of the 62 CORS, 60 (97%) patients had ischemic strokes while two (3%) had haemorrhagic strokes. So if the virus invades the lining of blood vessels, it could cause inflammation, constricting the blood vessels and restricting blood flow.

Another relates to ACE2 - a protein "receptor" on the surface of cells that SARS-CoV-2 uses to break into the cell. In a heart attack the blood vessel of the heart gets blocked, reducing the blood supply and damaging that area. This so-called "cytokine storm" can then cause brain damage.

Patients with high blood pressure were more likely to experience stroke than patients with normal blood pressure, while both diabetes and coronary artery disease also increased risk.

'The picture is complicated, ' said study author Dr Stefania Nannoni from the department of clinical neurosciences at the University of Cambridge. You can reduce your risk of stroke by addressing these modifiable risk factors including high blood pressure, overweight, cigarette smoking, high cholesterol, diabetes, physically inactive and poor diet. It accounts for 10-20% of all stroke cases.

'Secondly, we see a particular pattern of stroke in individuals with COVID-19, which suggests a causal relationship in at least a proportion of patients'.

Hospitals that were part of the study included St. John's, Bengaluru Medical College and Research Institute, Manipal Hospitals, Sakra, Apollo, M.S. Ramaiah, Satya Sai Institute of Higher Medical Sciences, and Narayana Health.

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