Intake of certain medications that can lower blood pressure in people with human immunodeficiency virus (HIV), can also increase the long-term risk of heart disease, stroke, and heart failure, according to new research. People with HIV are able to live longer with anti-retroviral therapy (ART). However, the medication likely elevates blood pressure (hypertension) and hypertension-related heart problems in the HIV group than among people without the virus.

"We suspected there could be differences in risk based on which medication providers select to treat hypertension among people with HIV due to potential interactions between blood pressure medications and some therapies used to treat the virus," said Jordana B Cohen, Assistant Professor at the University of Pennsylvania in Philadelphia, US.

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"Additionally, factors such as how the body handles salt, inflammation, and the accelerated aging of blood vessels may affect the risk of cardiac events in people with HIV differently than people who do not have HIV, which could be influenced by which blood pressure medication is used," Cohen added.

The findings were published in the journal Hypertension. For the study, the team reviewed records of 8,041 veterans with HIV (average age 53 years) who developed high blood pressure between 2000-2018; 6,516 had never been diagnosed with heart or blood vessel problems for more than six years.

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While 5,979 were on anti-retroviral medication therapy, 6,582 were prescribed single antihypertensive medication therapy: 1,025 on beta-blockers, 848 on calcium channel blockers, 1,905 on ACEi/ARBs, and 1,865 on diuretics. The researchers found that 25 percent of people experienced a cardiovascular event. The risk of developing heart disease, heart failure, or stroke for the first time was 90 percent higher among those taking beta-blockers compared to those who were taking ACEi/ARBs — the most frequently prescribed type of high blood pressure medication.

The increased risk was present whether or not blood pressure was under control. Thiazide diuretics and CCBs did not increase risk. "Blood pressure and heart disease risk in patients who have HIV can be safely managed with the first-line treatment of hypertension with ACEis, ARBs, CCBs, and thiazide diuretics and may have added benefit from initial treatment with ACEis and ARBs," Cohen said. Cohen said the results also highlight that there is possible harm from beta-blockers as a first-line treatment for hypertension whether a person has HIV or not. (IANS/SP)