Korea University Anam Hospital announced on the 2nd that a research team led by Professors Kim Byeong-jo and Park Jin-woo of the Department of Neurology announced that Valsalva Sugi increases the efficiency and diagnosis rate of orthostatic hypotension tests.
The study was conducted in collaboration with the Center for Autonomic Nervous Disorders at Vanderbilt University.
The research team analyzed the relationship with orthostatic hypotension by comparing heart rate change and blood pressure recovery time when performing the Valsalva maneuver on 2,498 patients who underwent autonomic nerve tests from March 2016 to May last year.
Valsalva maneuver is an autonomic nerve test that evaluates cardiovascular function. It is a test method that measures changes in heart rate and blood pressure by exhaling by exhaling with force on the stomach as if blowing up a balloon with the nose and mouth closed. can
As a result of the study, when the Valsalva maneuver was performed for 15 seconds, the lower the heart rate change and the longer the time to recover to normal blood pressure, the more necessary the standing tilt test for more than 30 minutes.
The standing tilt test is a test to screen patients with orthostatic hypotension, and the time required for the test varies depending on the symptom onset time.
In most cases, within 10 minutes of diagnosis, blood pressure drops and symptoms such as headache and dizziness appear. However, in the case of patients with delayed orthostatic hypotension, symptoms may appear following 10 minutes, so diagnosis may be missed or the test time may be extended.
Until now, there has been difficulty in selecting the optimal test time for each patient because there has been no objective guideline on how long a standing tilt test is necessary for which patient.
Valsalva can reduce the patient’s test burden by predicting the symptom onset time during the standing tilt test, and improves test efficiency by allowing medical staff to set the optimal test time for each patient.
Professor Kim Byeong-jo of the Department of Neurology at Korea University Anam Hospital said, “This is an important study that reduces unnecessary tests and helps diagnose and treat patients when performing a standing tilt test using various indicators of the Valsalva maneuver.”
The contents of the research were published in Hypertension of the American Heart Association (AHA), an internationally renowned academic journal, and were selected as ‘People who shine in Korea’ by the Biological Research Information Center (BRIC).
