Most people know that coronavirus is considered a respiratory disease. As a result, symptoms in people affected by virus often include signs of difficulty breathing. For those who want to check their lungs for a healthy examination, results of an X-ray or CT scan of chest return images that show that lungs are reasonably healthy.
These are just some of complex conditions that have puzzled doctors to determine why some patients have very low levels of oxygen (oxygen saturation) in their blood. Doctors say that when communicating with people who may be carriers of disease, they do not have difficulty breathing.
Todd Bull, director of Center for Lung and Respiratory Diseases at University of Colorado Aurora School of Medicine, said: "Many of these patients have very low oxygen levels, but their lungs don't look too bad."< / p >
The lungs of patients who test positive for COVID-19 may not be helped if they are asked to undergo an x-ray or chest CT scan. Some patients may have areas of cloudiness or hardening in lungs, although most have them "black", indicating that they are filled with air. In general, "black" lungs look quite healthy.But can a doctor offer a plausible explanation for why COVID-19 patients have low oxygen levels?
Cameron Kelsey Dell, MD, an emergency and emergency room physician at Maimonides Medical Center in Brooklyn, likens it to altitude sickness. He claimed that, like thousands of other New Yorkers stranded in plane at 30,000 feet, cabin was gradually depressurized. These patients are slowly starving for oxygen.
Therefore, a diagnosis that does affect people dealing with coronavirus may require closer attention to a person's lungs. Dr. Luciano Gattinoni, visiting professor of anesthesia and intensive care at University of Göttingen in Germany and one of world's experts in mechanical ventilation, believes that complex blood vessels in lungs may be problem. He explained that when lungs are damaged, blood vessels that carry blood through lungs close. As a result, blood can shunt from damaged areas to areas that function normally. But Gattinoni believes that some COVID-19 patients can no longer do this, meaning that blood is still flowing through damaged parts of lung. Some people feel they are breathing normally, but at same time their blood oxygen levels are dropping without even realizing it.
Gattinoni explained: As for ventilator that helps patient breathe better, it can cause damage to lungs due to high pressure. Therefore, he urged doctors to be careful when diagnosing patients and advised using ventilators only when necessary and as infrequently as possible.