METHOD FOR DIAGNOSING PULMONARY OEDEMA IN PATIENTS WITH SHORTNESS OF BREATH Russian patent published in 2025 - IPC A61B8/00 A61B8/08 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to therapy, cardiology, and can be used for diagnosing pulmonary oedema in patients with dyspnoea. Transthoracic ultrasonic examination of lungs and pleura is performed on both sides in each intercostal space with a linear ultrasonic transducer at frequency of 7-12 MHz before and after six-minute walking. Interstitial cardiogenic pulmonary oedema is diagnosed when determining from two sides in each intercostal space at least four B-lines before six-minute walking, if observing an increase in the number of B-lines in each intercostal space by three or more after a six-minute walk, and if observing a smooth pleural line with its thickness of not more than 1 mm on both sides. Interstitial non-cardiogenic pulmonary oedema is diagnosed by determining at least one side of more than one intercostal space of at least four B-lines before a six-minute walk, if there is no increase in all intercostal spaces of the number of B-lines after a six-minute walk and if there is at least one side of an irregular pleural line with its thickness of more than 1 mm. Cardiogenic and non-cardiogenic interstitial pulmonary oedema is excluded when determining from both sides in all intercostal spaces not more than three B-lines before six-minute walk, in the absence of an increase in the number of B-lines in all intercostal spaces after a six-minute walk and with a smooth pleural line with its thickness of not more than 1 mm on both sides.

EFFECT: method provides simple and non-invasive differential diagnosis of interstitial cardiogenic and non-cardiogenic pulmonary oedema or exclusion of cardiogenic and non-cardiogenic interstitial pulmonary oedema by counting B-lines after physical activity.

1 cl, 3 ex