ABSTRACT
This study systematically investigated vital signs, cardiovascular problems and level of consciousness in patients with infectious and non-infectious diseases. Respiratory viruses are a serious threat to the health security of people internationally and can lead to global epidemics with high mortality and financial burden for treatment. An example of these viruses that have always brought many challenges are coronaviruses. There are several reasons for this. Heart cells have angiotensin-converting-2 (ACE-2) receptors at the point where the coronavirus attaches to cells. Heart damage can also be caused by too much inflammation in the body. As the immune system fights the virus, the inflammatory process can damage some healthy tissues, including the heart. The coronavirus also affects the inner surfaces of blood vessels, which can cause inflammation of blood vessels, damage to very small vessels, and blood clots. All of these can compromise blood flow to the heart or other parts of the body. Severe covid-19 is a disease that affects endothelial cells, which form the inner lining of blood vessels. Many symptoms have been reported in the post-Covid-19 period and there are several reasons for these symptoms. Severe fatigue after infection with the corona virus is common like other serious diseases. Many people experience shortness of breath, chest pain or palpitations. Any of these problems can be related to the heart. But it can also be due to other factors, including the consequences of a long-term illness, prolonged inactivity, and weeks of bed rest for recovery. People who recover from the coronavirus sometimes show symptoms of a condition known as standing orthostatic tachycardia syndrome. Researchers are discovering whether or not there is a connection between this disease and the corona virus. Standing orthostatic tachycardia syndrome is not a heart problem per se, but a neurological problem that affects the part of the nervous system that regulates heart rate and blood flow. This syndrome can cause a rapid heartbeat when standing which can lead to fatigue, palpitations, lightheadedness and other symptoms.