Mon, Aug 18, 2025 page3

• Doctor warns of hypotension signs

  • Staff writer
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  Do not ignore symptoms of hypotension, a doctor warned on Saturday, following reports that former first lady Wu Shu-jen (吳淑珍) was hospitalized on Friday after collapsing at home allegedly due to low blood pressure.

  Many people brush aside temporary loss of vision or dizziness when suddenly standing up, but postural hypotension could be a sing of autonomic nervous system dysfunction or could be linked to several health conditions, Taipei Veterans General Hospital’s Division of Genetics and Prenatal Diagnosis head Chang Chia-ming (張家銘) wrote on Facebook.

  Studies have found that postural hypotension could be linked to diabetes, autoimmune disorders, menopause, post-COVID-19 conditions, vitamin deficiencies, chronic medicine intake, or trauma of the brain or spine, he wrote.

  

  Singer and actress Amber An demonstrates how to measure blood pressure at home at a news conference in Taipei on July 22 last year.

  Photo: Pan Shao-tang, Taipei Times

  People can prevent postural hypotension by drinking sufficient amounts of water (about 2.5 liters per day for most people); consume enough sodium (about 7g per day); stand up gradually and move their limbs in bed before sitting up; exercise regularly; and avoid trigger factors, such as dehydration, overheating, fatigue, low blood pressure and infections, Chang said.

  If symptoms are not improved by adjusting daily habits, people should see a doctor, he said.

  The diagnosis of autonomic nervous system dysfunction takes about two to three years of observation, down from about seven years previously, he said, adding that people should not be afraid of getting examined, as treatment would improve their quality of life.

  Shin Kong Wu Ho-Su Memorial Hospital cardiologist Hung Hui-fong (洪惠風) said that postural hypotension can stem from a variety of factors, including medication, dehydration, impaired venous return, autonomic nervous system dysfunction and abnormal cardiac output, and it might take time to find the cause.

  For example, a person had significantly fluctuating blood pressure, with their systolic pressure sometimes exceeding 200 millimeters of mercury (mmHg) and sometimes as low as 90mmHg, and it was measured at about 170mmHg to 180mmHg when they were lying down, but dropped to about 110mmHg to 120mmHg when they stood up, he said.

  As people’s blood pressure sometimes drops after eating, those with postural hypotension should frequently measure their blood pressure at home to find their own patterns, so they can adjust daily habits and reduce the risk of fluctuating blood pressure, Hung said.

  Writing in Taipei Veterans General Hospital’s monthly bulletin in July last year, the hospital’s chief of family medicines, Lin Sian-han (林賢翰), shared methods to reduce the risk of postural hypotension.

  Postural hypotension is diagnosed by a drop of at least 20mmHg in systolic blood pressure or 10mmHg in diastolic blood pressure shortly after standing up from a lying or sitting position, he said, adding that symptoms might include dizziness, lightheadedness, blurred vision and fainting due to a sudden blood pressure drop.

  Normally, the body can adjust blood flow when changing position to maintain a steady blood pressure, but in some circumstances the adaptation is inadequate and triggers postural hypotension, Lin said.

  He suggested gradually changing position, such as sitting up from a lying posture and waiting for about three to five minutes to make sure they feel no discomfort before standing up, especially after waking up in the morning.

  Adequate water intake can help maintain normal blood volume, especially in hot weather or after exercising, while wearing compression socks and doing ankle or leg exercises, such as ankle pumps or leg raises, can help improve blood circulation in the lower limbs, he said.

  Avoid standing for too long, or lift one foot at a time to improve muscle contraction and blood circulation if standing for long periods of time cannot be avoided, he added.
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