Tue, Feb 21, 2017 | updated 10:26 PM IST

Is high blood pressure an emergency?

Updated: Jul 08, 2016 11:08 IST

Washington D.C, Jul 8 (ANI): If your blood pressure goes up, but you are feeling fine, chances are you will still rush to the nearest hospital emergency room, which, according to a recent study, might be a wrong move.

Visits to emergency departments for patients with hypertension increased by 64 percent between 2002 and 2012 while hospitalizations for those visits declined by 28 percent.

The research from the Institute for Clinical Evaluative Sciences in Toronto suggests that aggressive home monitoring of blood pressure may be driving patients to emergency departments despite the lack of other emergency conditions, such as stroke.

"We encourage patients to monitor their blood pressure at home if they have been diagnosed with hypertension, but not every high blood pressure reading is an emergency," said lead study author Clare Atzema.

Atzema added, "Some of the increase in emergency visits is due to the aging of our population, but we suspect that recent public education campaigns recommending home blood pressure monitoring may have inadvertently contributed to the rise in visits for hypertension."

During the study period in which visits to Ontario emergency departments for hypertension increased from 15,793 to 25,950 per year, the proportion of patients admitted to the hospital as a result decreased from 9.9 percent to 7.1 percent. Among the patients whose emergency department visit ended in admission to the hospital, the most frequent hospital diagnoses were stroke, renal failure and heart failure. The proportion of patients arriving via ambulance increased over time, from 10.7 percent to 14.3 percent.

Mortality was very low: less than 1 percent of patients died within 90 days and only 4.1 percent died within 2 years. Together, hospitalizations for stroke, heart failure, acute myocardial infarction, atrial fibrillation, renal failure, hypertensive encephalopathy and aortic dissection were less than 1 percent at 30 days.

"Stroke remains a huge killer and we do appreciate patients with hypertension being so conscientious about monitoring their readings," noted Atzema, adding "Patients should be aware that unless their high blood pressure coincides with symptoms of a medical emergency, such as chest pain, severe headache, nausea or shortness of breath, they probably do not need to visit the ER. We of course encourage them to follow up as soon as possible with their regular physician. If there is any doubt, come to the emergency department: we would rather have you come without an emergency than stay home with one."

The study appears in journal Annals of Emergency Medicine. ( highlights">ANI)

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