Monday January 20, 2020

30% Higher Risk Of Heart Failure Linked with Malaria

The findings were presented at the ESC Congress 2019 together with the World Congress of Cardiology in Paris

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Malaria, Heart failure, disease
FILE - A female Aedes aegypti mosquito is shown in this Center for Disease Control photograph. VOA

Malaria infection is linked to 30 per cent higher risk of heart failure, a new research has warned.

The mosquito-borne infection affects more than 219 million people worldwide each year, according to the 2018 statistics of the World Health Organization (WHO).

“We have seen an increase in the incidence of malaria cases and what is intriguing is that we have seen the same increase in cardiovascular disease in the same regions,” said the first author of the study, Philip Brainin, a postdoctoral research fellow at the Herlev-Gentofte University Hospital in Denmark.

“Even though we have taken preventive measures to decrease the malaria numbers, it remains a major burden,” Brainin said.

Mission Delhi, STEMI, Heart Attack
The Mission Delhi aims to provide care to STEMI, a very serious type of heart attack, patients. Pixabay

The researchers used Danish nationwide registries to identify patients with a history of malaria infection between January 1994 and January 2017. The mean age of patients in the study was 34 and 58 per cent of the subjects were male.

Around 4,000 malaria cases were identified, with 40 per cent having plasmodium falciparum, a parasite transmitted through mosquito bites that is responsible for the majority of severe malaria cases in humans.

The 11-year follow-up of patients revealed 69 cases of heart failure, which were very high as compared to the general population, and 68 cases of cardiovascular death, which were considered within normal range.

“These patients had a 30 per cent increased likelihood of developing heart failure over the follow-up time,” Brainin said.

More research will be needed to further validate the findings, but recent studies have found that malaria could be a contributor to functional and structural changes in the myocardium, which is the muscle tissue of the heart.

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Experimental studies have also shown that malaria may affect the blood pressure regulatory system causing hypertension, which is a contributor to heart failure.

Malaria can also affect vascular pathways that cause inflammation in the heart, which could lead to fibrosis and then heart failure.

According to the European Society of Cardiology (ESC), a combination of high blood pressure, diabetes, obesity, and coronary artery disease are among the most common risk factors for heart failure.

The findings were presented at the ESC Congress 2019 together with the World Congress of Cardiology in Paris.

Among the high malaria burden countries, India has made substantial progress in disease control. The malaria burden has declined by over 80 per cent — malaria cases came down to 0.39 million in 2018 from 2.03 million cases in 2000. Malaria deaths in India have declined by over 90 per cent — from 932 deaths in 2000 to 85 in 2018, according to Indian Council of Medical Research. (IANS)

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Diabetes is an Independent Risk Factor For Heart Failure: Study

According to health expert in India, if poorly controlled, diabetes leads to cardiomyopathy resulting in progressive deterioration of pumping capacity of heart

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Diabetes
The study shows that diabetes is an independent risk factor for the development of heart failure in the community dwelling population. Pixabay

Heart problems are a common development for people with diabetes and now researchers have found that diabetes is an independent risk factor for the development of heart failure in the community dwelling population.

According to health expert in India, if poorly controlled, diabetes leads to cardiomyopathy resulting in progressive deterioration of pumping capacity of heart.

“Diabetes is also a major risk factor for atherosclerosis and this eventually leads to blockage of coronary arteries. This leads to heart attack or myocardial infarction,” Satish Koul, HOD and Director Internal Medicine, Narayana Superspeciality Hospital, Gurugram, told IANS. “Due to myocardial infarction, the heart muscle becomes weak and eventually heart fails as a pump leading to congestive heart failure,” Koul added.

According to the current study, published in the journal Mayo Clinic Proceedings, researchers evaluated the long-term impact of diabetes on the development of heart failure, both with preserved ejection fraction – a measurement of the percentage of blood leaving the heart with each contraction – and reduced ejection fraction. They also looked at mortality in a community population, controlling for hypertension, coronary artery disease and diastolic function.

From an initial group of 2,042 residents of Olmsted County in US, 116 study participants with diabetes were matched 1:2 for age, hypertension, sex, coronary artery disease and diastolic dysfunction to 232 participants without diabetes.

Over the 10-year follow-up period, 21 per cent of participants with diabetes developed heart failure, independent of other causes.

Diabetes
Heart problems are a common development for people with diabetes and now researchers have found that diabetes is an independent risk factor for the development of heart failure in the community dwelling population. Pixabay

In comparison, only 12 per cent of patients without diabetes developed heart failure. Cardiac death, heart attack and stroke were not statistically different in the study between the two groups.

The study shows that diabetes is an independent risk factor for the development of heart failure in the community dwelling population. Furthermore, the outcome data support the concept of a diabetic cardiomyopathy.

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This research extends previous findings and demonstrates that even without a known cardiac structural abnormality and with a normal ejection fraction, diabetic patients are still at increased risk of developing heart failure as compared to their nondiabetic counterparts. (IANS)