Study Shows Missing Blood Pressure Doses May Reduce Heart Protection

iNDICA NEWS BUREAU-

People who frequently skip doses of their blood pressure medicine may forfeit much of the protection these drugs provide against heart attacks, strokes and other major cardiovascular complications, according to an analysis involving more than 91,000 participants.

The research, presented at the European Society of Cardiology (ESC) Congress, found that patients who stayed closely on their prescribed treatment had an 11 percent lower rate of major cardiovascular events than comparison groups. In contrast, no statistically significant benefit was seen among patients whose adherence was lower.

The results underscore how important it is to take blood pressure medication exactly as prescribed, especially because hypertension remains a major global health issue.

An estimated 1.4 billion adults between the ages of 30 and 79 live with high blood pressure, a condition that raises the risk of heart disease, stroke and early death. Although medication can lower those risks, about half of patients do not follow their prescriptions as directed, according to ScienceDaily.

Researchers led by Qianqian Yang of the University of Oxford analyzed individual patient data from nine clinical trials involving 91,339 people. In each trial, a blood pressure treatment was compared with either a placebo or a less intensive treatment strategy.

Participants were split into two categories based on how consistently they took their medicine. Those who used at least 80 percent of their prescribed doses were placed in the higher-adherence group, while those below that threshold were classified as lower adherence.

The analysis also showed that adherence fell over time, even in the structured environment of clinical trials. About 88 percent of participants met the higher-adherence standard in the first year, but that figure dropped to 79 percent by year five.

Differences in medication use were also reflected in blood pressure control. Among patients with higher adherence, systolic blood pressure was 5.2 millimeters of mercury lower in the treatment group than in the comparison group. Among those with lower adherence, the difference was only 3.0 mmHg.

The researchers looked at major cardiovascular events, including stroke, heart attack, ischemic heart disease and heart failure leading to hospitalization or death. While the treatment group with better adherence had an 11 percent lower incidence of these events, the benefit was not statistically significant among those who took their medication less regularly.

The authors said health professionals should make medication adherence a standard part of hypertension care. They called for stronger patient education, routine follow-up and practical ways to make treatment easier to maintain.

Suggested approaches include simplifying dosing schedules, combining several drugs into one pill and using longer-acting medicines that may lessen the effect of an occasional missed dose.

Felix Mahfoud, chair of the ESC Communication Committee, also emphasized the value of open and nonjudgmental conversations between clinicians and patients about obstacles to taking medication.

The findings indicate that prescribing effective medicine alone may not be enough. Ensuring that patients take treatment consistently is also essential to achieving the full cardiovascular benefit.