Nikolaeva Symptom

Nikolaev's symptom is a clinical sign that was described by Soviet physician Nikolai Aleksandrovich Nikolaev in the 1930s. This symptom is used to diagnose lung and heart diseases, as well as to assess the patient’s condition in the postoperative period.

Nikolaev's symptom is that when pressure is applied to the patient's chest, the breathing rate decreases. This is due to the fact that when pressing on the chest, the lungs are compressed, which leads to a decrease in the amount of air entering the lungs. At the same time, the respiratory rate decreases, which is a sign of Nikolaev’s symptom.

This symptom is one of the most common methods for diagnosing lung diseases. However, it should be noted that this symptom is not the only diagnostic method and can only be used in combination with other methods, such as a chest x-ray or blood test.

In general, Nikolaev's symptom is a simple and accessible diagnostic method that can be used in the daily practice of a doctor.

"Nikolaev's symptom" is a medical phenomenon that is characterized by darkening of the skin on the distal parts of the extremities when the skin is exposed to cold or low temperatures. This symptom was first described by Russian physician Nikolai Nikolaevich Nikolaev in the 19th century.

The mechanism of development of this symptom is as follows. When the skin is exposed to cold or low temperature, peripheral blood vessels constrict, resulting in decreased blood flow to the area. In response to a decrease in blood supply, the skin begins to experience hypoxia, that is, insufficient oxygen supply to the skin cells. This causes the skin to darken due to the breakdown of hemoglobin, which is the main carrier of oxygen in the blood.

The main factor causing the appearance of the “Nikolaev symptom” is frostbite of the skin when exposed to low temperatures. However, this symptom can also be caused by other factors, such as prolonged exposure to cold, lack of vitamins in the diet and decreased blood vessel tone.

In clinical practice, the “Nikolaev symptom” can be observed in people with vascular disorders, endocrine diseases, diabetes mellitus, metabolic disorders and other diseases. If you have this symptom, it is recommended to consult a general practitioner or dermatologist to identify the cause of its occurrence and prescribe appropriate treatment.