The burgeoning cardiovascular disease epidemic in Indians - perspectives on contextual factors and potential solutions.

Cardiovascular diseases (CVD) are the leading cause of death and disability in India. The CVD epidemic in Indians is characterized by a higher relative risk burden, an earlier age of onset, higher case fatality and higher premature deaths. For decades, researchers have been trying to understand the reason for this increased burden and propensity of CVD among Indians. It can partly be explained by population-level changes and the remaining by increased inherent biological risk. While increased biological risk can be attributed to phenotypic changes caused by early life influences, six major transitions can be considered largely responsible for the population-level changes in India-epidemiological, demographic, nutritional, environmental, social-cultural and economic. Although conventional risk factors explain substantial population attributable risk, the thresholds at which these risk factors operate are different among Indians compared with other populations. Therefore, alternate explanations for these ecological differences have been sought and multiple hypotheses have been proposed over the years. Prenatal factors that include maternal and paternal influences on the offspring, and postnatal factors, ranging from birth through childhood, adolescence and young adulthood, as well as inter-generational influences have been explored using the life course approach to chronic disease. In addition to this, recent research has illustrated the importance of the role of inherent biological differences in lipid metabolism, glucose metabolism, inflammatory states, genetic predispositions and epigenetic influences for the increased risk. A multifaceted and holistic approach to CVD prevention that takes into consideration population-level as well as biological risk factors would be needed to control the burgeoning CVD epidemic among Indians.

Corrigendum to: May Measurement Month 2019: an analysis of blood pressure screening results from India.

[This corrects the article DOI: 10.1093/eurheartjsupp/suab047.].

May Measurement Month 2019: an analysis of blood pressure screening results from India.

AIMS: May Measurement Month is a global screening campaign to raise awareness regarding elevated blood pressure (BP). With the growing burden of hypertension, it is imperative to regularly assess the disease's prevalence, risk factors, and awareness levels in a country. The current prevalence of hypertension in India as per the National Family Health Survey Data stands at 25.3%. May Measurement Month mobilizes healthcare professionals and sensitizes them to regularly measure BP, and impart lifestyle modification advice to the community. It also complements the deficiency in screening programmes at a national and international level. METHODS AND RESULTS: May Measurement Month was carried out in May 2019 as an opportunistic screening campaign for adults (≥18 years). It was carried out by over 5000 trained volunteers across approximately 1000 screening sites (hospitals, public places, pharmacies, villages, and malls) in India. A total of 362 708 (57% males and 42.7% females) people were screened, among whom 68.1% had never measured their BP, and 29.4% (n = 106 522) were found to have hypertension. Of these, only 42.0% were on antihypertensive medication and 23.3% had controlled hypertension. CONCLUSION: Almost a third of the screened population had hypertension, and less than half of those with hypertension were aware of it or on treatment for it. Among those on antihypertensive drugs, BP was controlled in only half of them. These results support the need for greater impetus on BP screening initiatives to detect hypertension early in the community and prevent complications due to uncontrolled BP.

Sodium intake, health implications, and the role of population-level strategies.

Evidence to date suggests that high sodium intake affects health adversely, yet the role of a population-level strategy to reduce sodium intake is often contested. This review focuses on current available evidence on regional sodium intake levels, health implications of sodium intake, and population-level strategies implemented worldwide. The limitations in evidence, the difficulties in implementing population-wide strategies to reduce sodium intake, and the need for such strategies are critically reviewed. Evidence clearly shows that sodium has an adverse effect on blood pressure, cardiovascular disease, and mortality. However, whether reduced sodium intake benefits all individuals or only hypertensive individuals is still unclear. Methodological issues and publication bias in current evidence are other matters of concern in sodium-related research. While it is essential to continue working toward the World Health Organization's target of 30% reduction in sodium intake, due consideration should be given to improving the quality of research, reducing bias in publications, and reviewing evidence more critically.

May Measurement Month 2019: The Global Blood Pressure Screening Campaign of the International Society of Hypertension.

Elevated blood pressure remains the single biggest risk factor contributing to the global burden of disease and mortality. May Measurement Month is an annual global screening campaign aiming to improve awareness of blood pressure at the individual and population level. Adults (≥18 years) recruited through opportunistic sampling were screened at sites in 92 countries during May 2019. Ideally, 3 blood pressure readings were measured for each participant, and data on lifestyle factors and comorbidities were collected. Hypertension was defined as a systolic blood pressure ≥140 mm Hg, or a diastolic blood pressure ≥90 mm Hg (mean of the second and third readings) or taking antihypertensive medication. When necessary, multiple imputation was used to estimate participants' mean blood pressure. Mixed-effects models were used to evaluate associations between blood pressure and participant characteristics. Of 1 508 130 screenees 482 273 (32.0%) had never had a blood pressure measurement before and 513 337 (34.0%) had hypertension, of whom 58.7% were aware, and 54.7% were on antihypertensive medication. Of those on medication, 57.8% were controlled to <140/90 mm Hg, and 28.9% to <130/80 mm Hg. Of all those with hypertension, 31.7% were controlled to <140/90 mm Hg, and 350 825 (23.3%) participants had untreated or inadequately treated hypertension. Of those taking antihypertensive medication, half were taking only a single drug, and 25% reported using aspirin inappropriately. This survey is the largest ever synchronized and standardized contemporary compilation of global blood pressure data. This campaign is needed as a temporary substitute for systematic blood pressure screening in many countries worldwide.

May Measurement Month 2017: an analysis of the blood pressure screening campaign results in India-South Asia.

Elevated blood pressure (BP) is a growing burden worldwide, leading to over 10 million deaths each year. May Measurement Month (MMM) is a global initiative aimed at raising awareness of high BP and to act as a temporary solution to the lack of screening programmes worldwide. A recently conducted study on 1.3 million adults in India showed the prevalence of hypertension to be 25.3%. Raised BP is responsible for 8.5% of the total Disability Adjusted Life Years and is also an important contributor to cardiovascular disease which is the leading cause of deaths in the country. An opportunistic cross-sectional survey of volunteers aged ≥18 was carried out in May 2017. Blood pressure measurement, the definition of hypertension and statistical analysis followed the standard MMM protocol. The study was conducted in over 500 screening sites across the country and involved over 5000 volunteers. Screening sites included health facilities such as hospitals and clinics, as well as a variety of public spaces. A total of 240 376 individuals were screened during MMM17. Out of the 122 685 screenees for whom all three BP readings were available, 38 974 (31.8%) had hypertension based on the mean of second and third reading. Of individuals not receiving antihypertensive medication, 21 679 (17.7%) were hypertensive. Of individuals receiving antihypertensive medication, 14 203 (82.6%) had uncontrolled BP. MMM17 was the largest collaborative BP screening campaign undertaken in India with involvement of the public as well as the private sector. Over two-thirds of the individuals on antihypertensive treatment had uncontrolled BP. Approximately one-fifth of the participants had raised BP and were not on antihypertensive treatment prior to the study. These results suggest that opportunistic screening can identify significant numbers with raised BP.

Impact of repeated blood pressure measurement on blood pressure categorization in a population-based study from India.

Often a single blood pressure (BP) measurement is used to diagnose and manage hypertension in busy clinics. However, repeated BP measurements have been shown to be more representative of the true BP status of the individual. Improper measurement of office BP can lead to inaccurate classification, overestimation of a patient's true BP, unnecessary treatment, and misinterpretation of the true prevalence of hypertension. There is no consensus among major guidelines on the number of recommended measurements at a single visit or the method of arriving at final clinic BP reading. The participants of the National Family Health Survey (NFHS-4), a nationwide survey conducted in India from 2015 to 2016, were used for the analysis. The prevalence and median difference in systolic blood pressure (SBP) and diastolic blood pressure (DBP) for single as well as combinations of two or more readings were calculated. Cross-tabulation was used to assess classification of individuals based on first BP reading compared with the mean of two or more BP measurements. There was a 63% higher prevalence of hypertension when only the first reading was considered for diagnosis in comparison to the mean of the second and third readings. A decrease of 3.6 mmHg and 2.4 mm Hg in mean SBP and DBP, respectively, was observed when the mean of the second and third readings was compared to the first reading. In those who are identified to have grade 1 or higher categories of hypertension, we recommend three BP measurements, with the mean of the second and third measurements being the clinic BP.

A study of knowledge, attitude and practices on immunization of children in urban slums of bijapur city, karnataka, India.

BACKGROUND: The immunization coverage is not uniform in India. In Karnataka, except for Uttar Kannada District (very high immunization coverage of 95%) and 14 districts that have shown a better immunization coverage (>85% coverage), the remaining 15 districts (including Bijapur District) have poor coverage. The United Nations Children's Fund (UNICEF) 2002 report on Bijapur district shows that only a little over one fourth of the children were fully immunized (25.8%). The state's fully vaccinated figure was more than two and a half times higher than that of the district. In this prevailing scenario, it becomes the need of the hour to find factors which influence routine immunization in Bijapur district, which will help the planners in implementing the immunization programme in a better way, to achieve >85% coverage. OBJECTIVES: To determine the knowledge, attitude and practices of respondents among guardians of children aged 12-23 months with respect to immunization. MATERIAL AND METHODS: A community based, cross-sectional study was conducted in the urban slums of Bijapur city, India. Out of the 20 enlisted slums, 7 slums were chosen by using convenience sampling. House to house survey was done. After obtaining oral consents, information regarding knowledge, attitude and practices was collected by using a semi-structured proforma. RESULTS: A total of 155 mothers/ responsible guardians of children in the age group of 12 to 23 months were included in the study. Children of 54 out of 155 respondents (34.84%) were fully immunized, 97 (62.58%) were partially immunized and 4 (2.58%) were unimmunized. The main reason for partial and non-immunization was found to be lack of information. CONCLUSION: Immunization coverage in the urban slums of Bijapur is still way short of the 85% coverage mark. A lack of information and motivation among the parents is the main reason for this dismal scenario, that needs to be rectified at the earliest.