Tuesday January 21, 2020

Study Says, Air Pollution can Reduce Heart Rate response causing Stress in Infants

The air pollution levels in this study were similar to levels experienced by the general US population

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Infants
By studying the babies' heart rate and respiration at age six months, the researchers found that the higher the level of the mother's exposure to Air Pollution in pregnancy, the less variability in the heart rate of Infants in response to a stress challenge. Pixabay

Exposure to air pollution during pregnancy is associated with reduced cardiac response to stress in their six-month-old infants, warns a new study.

Decreased heart rate variability, as observed in this study, is a known risk factor for mental and physical health problems in later life.

Variability in how the heart rate responds to stressful experiences is essential for maintaining optimal functioning of the cardiovascular, respiratory, and digestive systems and also is central to emotional well-being and resilience to stress over one’s lifetime.

Air pollution’s negative effect on heart rate variability has previously been found to lead to medical and psychological conditions such as heart disease, asthma, allergies, and mood or behavioural disorders in studies of older children, adolescents, and adults.

“These findings, in combination with increasing worldwide exposure to particulate air pollution, highlight the importance of examining early-life exposure to air pollution in relation to negative medical, developmental, and psychological outcomes,” said senior author Rosalind Wright from Icahn School of Medicine at Mount Sinai in New York.

For the study, the researchers studied 237 Boston-based mothers and their infants and used satellite data and air pollution monitors to determine the level of particulate air pollution the mothers were exposed to during pregnancy.

Air Pollution
Exposure to Air Pollution during pregnancy is associated with reduced cardiac response to stress in their six-month-old Infants, warns a new study. Pixabay

The air pollution levels in this study were similar to levels experienced by the general US population.

By studying the babies’ heart rate and respiration at age six months, the researchers found that the higher the level of the mother’s exposure to air pollution in pregnancy, the less variability in the infant’s heart rate in response to a stress challenge.

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The findings were published in the journal Environmental Health Perspectives. (IANS)

Next Story

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)