Almost 90 percent of coronavirus patients on ventilators died in large U.S. study

Almost 90 percent of coronavirus patients on ventilators died in large U.S. study


Now five weeks into the crisis, a paper published in the journal JAMA about New York State’s largest health system suggests a reality that like so much else about the novel coronavirus, confounds our early expectations

Researchers found that 20 percent of all those hospitalized died — a finding that’s similar to the percentage who perish in normal times among those who are admitted for respiratory distress.

But the numbers diverge more for the critically ill put on ventilators. Eighty-eight percent of the 320 covid-19 patients on ventilators who were tracked in the study died. That compares with the roughly 80 percent of patients who died on ventilators before the pandemic, according to previous studies — and with the roughly 50 percent death rate some critical care doctors had optimistically hoped when the first cases were diagnosed.

“For those who have a severe enough course to require hospitalization through the emergency department it is a sad number,” said Karina W. Davidson, the study’s lead author and a professor at the Feinstein Institutes for Medical Research at Northwell.

The analysis is the largest and most comprehensive look at outcomes in the United States to be published so far. Researchers looked at the electronic medical records of 5,700 patients infected with covid-19 between Mar. 1 and Apr. 4 who were treated at Northwell Health’s 12 hospitals located in New York City, Long Island, and Westchester County — all epicenters of the outbreak. Sixty percent were male, 40 percent female and the average age was 63.

“It’s important to look to American data as we have different resources in our health care system and different demographics in our populations,” Davidson said.

The paper also found that of those who died, 57 percent had hypertension, 41 percent were obese and 34 percent had diabetes which is consistent with risk factors listed by the Centers for Disease for Control and Prevention. Noticeably absent from the top of the list was asthma. As doctors and researchers have learned more about covid-19, the less it seems that asthma plays a dominant role in outcomes.

One other surprising finding from the study was that 70 percent of the patients sick enough to be admitted to the hospital did not have a fever. Fever is currently listed as the top symptom of covid-19 by the CDC, and for weeks, many testing centers for the virus turned away patients if they did not have one.

Davidson said that as a result of that findings, Northwell is encouraging people with underlying health conditions, such as hypertension and diabetes, who are potentially exposed to the virus and who might not have a fever to consult with a doctor sooner rather than later.



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