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   Table of Contents - Current issue
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April-June 2019
Volume 8 | Issue 2
Page Nos. 43-112

Online since Wednesday, April 3, 2019

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EDITORíS PAGE  

Editor's page April 2019 p. 43
Ravi R Kasliwal
DOI:10.4103/2250-3528.222930  
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ORIGINAL ARTICLES Top

Utility of ankle–brachial pressure index/carotid intima-media thickness ratio in predicting presence and severity of coronary artery disease: A study from major center in Northeastern India p. 44
Farhin Iqbal, Amol Vasantrao Patil, Jogesh Chandra Barkataki
DOI:10.4103/JCPC.JCPC_38_18  
Background: Studies have shown that carotid intima-media thickness (CIMT) and ankle–brachial pressure index (ABI) can be used as surrogate markers of coronary artery disease (CAD). However, whether studying the ratio of ABI and CIMT has any added value in predicting CAD when compared to either of them alone, has not been studied. Aims: The aim of the study is to compare CIMT and ABI as surrogate markers for the presence and extent of CAD and to investigate whether studying the ratio of ABI and CIMT has any incremental value in predicting CAD than either of them. Methods: We prospectively enrolled 235 stable, non-ACS patients who underwent CIMT and ABI measurements followed by diagnostic coronary angiography. Results: The mean age of the study population was 56.32 ± 10.14 years. CIMT was significantly higher in the CAD group compared to non-CAD group (0.91 ± 0.22 vs. 0.66 ± 0.15, P ≤ 0.0001). ABI was significantly lower in the CAD group compared to non-CAD group (1.07 ± 0.19 vs. 1.18 ± 0.14, P ≤ 0.0001). At an optimal cutoff value of ≥0.75 mm, CIMT showed better predictive values (sensitivity and specificity –72.3% and 79%, respectively) compared to ABI ≤0.9 (sensitivity and specificity – 21.53% and 96.19%, respectively). CIMT was the strongest independent predictor of CAD (P < 0.0001) followed by ABI (P = 0.006) by multiple regression. ABI/CIMT ratio of ≤1.55 had better predictive value (sensitivity and specificity –75.4% and 78.1%, respectively) and stronger correlation with CAD severity (R = 0.42), than either of them. Conclusion: CIMT is a better surrogate marker of CAD compared to ABI. Studying ABI/CIMT ratio has an incremental value in predicting CAD.
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Association between hypertension and sleep duration and water intake in Indian young adults p. 50
Umeshwar Pandey, Tanu Midha, Yashwant Kumar Rao
DOI:10.4103/JCPC.JCPC_46_18  
Context: The prevalence of hypertension is on the rise in developing countries like India. Physiological parameters such as sleep duration and water intake may be associated with hypertension in young adults. Aims: The aim is to study the association between hypertension and day and nighttime sleep duration and water intake among young adults. Setting and Design: The study was a cross-sectional study, conducted among 596 students of Government Medical College, Kannauj, aged between 17 and 22 years. Materials and Methods: Participants were classified using the diagnostic criteria of the American Heart Association. Data were recorded on a pre-designed and pretested questionnaire. Data analysis was performed using SPSS 22.0. Receiver operator characteristic curve analysis and multiple logistic regression analysis were applied. Results: The prevalence of hypertension was 34.9%, 35.9% among boys, and 33.5% among girls, respectively. Less water intake and shorter sleep duration at nighttime were found to be independent predictors of hypertension. Cutoff of sleep duration at nighttime for predicting hypertension was ≤7.6 h among boys and ≤7.1 h among girls. The sensitivity and specificity of the cutoff for sleep duration at night time in boys was 79.3% and 74.2%, respectively, and that in girls was 81.5% and 75.6%, respectively. The cutoff for water intake for predicting hypertension was ≤2.1 L for boys and ≤1.5 L for girls, respectively. The sensitivity and specificity of the cutoff for water intake in boys was 74.8% and 70.3%, and in girls was 78.3% and 71.5%, respectively. Conclusions: Young adults with longer duration of sleep during night time and more water intake had a lesser risk of hypertension.
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Clinical presentation and 2-year mortality outcomes in acute heart failure in a tertiary care hospital in South India: A retrospective cohort study p. 56
Vengatesh Munusamy, Luxitaa Goenka, Masum Sharma, Thilagavathi Ramamoorthy, Durga Jha, S Solaipriya, VE Dhandapani, Melvin George
DOI:10.4103/JCPC.JCPC_45_18  
Background: Heart failure (HF) is one of the leading causes of mortality and morbidity worldwide. We sought to describe the clinical epidemiology of HF from a representative sample in a tertiary care setting and to evaluate the factors which could increase the mortality risk in the study patients. Methods: This retrospective cohort study was carried out among patients who had been admitted with a diagnosis of acute HF from 2013 to 2017. Demographic data, history, laboratory investigations, data on medication clinical variables, and in-hospital outcomes were obtained from the patient's hospital records. The patients were assessed through the telephonic interview for mortality outcomes. Data were analyzed using SPSS software version 16.0 (SPSS Inc., Chicago, IL) and all values of P < 0.05 was considered as statistically significant. Results: A total of 355 acute heart failure (AHF) patients were included in the study with a mean age of 57.78 ± 12.78 years. The most common etiologies among the study patients were ischemic heart disease (58%) and Dilated Cardiomyopathy (24.79%). The in-hospital and 2-year mortality was found to be 104 (29.3%) and 179 (50.4%), respectively. The 2-year mortality was significantly higher in patients with ischemic HF than that of nonischemic HF (119 [57.8%] vs. 58 [39.5%], P = 0.003). Multivariate Cox proportional hazard analysis demonstrated that elderly age, the presence of diastolic dysfunction and higher levels of total leukocyte count (TLC) were independent predictors of mortality. Conclusion: The mortality rate in AHF is higher among ischemic HF than nonischemic HF. The major factors contributing to the 2-year mortality rate among AHF were elderly age, diastolic dysfunction, and high-TLC.
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REVIEW ARTICLES Top

Stress echocardiography in aortic stenosis p. 64
Nitin Burkule
DOI:10.4103/JCPC.JCPC_9_19  
In apparently asymptomatic severe aortic stenosis (AS) group, stress echocardiography objectively identifies symptomatic, high-risk AS patients requiring early aortic valve replacement (AVR). The low-flow, low-gradient AS is well-characterized clinical entity with distinct diagnostic, management, and clinical outcome challenges. A comprehensive two-dimensional transthoracic echocardiography (2D echo) and Doppler and low-dose dobutamine stress echocardiography are of paramount importance for accurate diagnosis and timely decision of AVR. However, clinicians and imaging experts should be aware of the pitfalls and inaccuracies inherent in 2D echo/Doppler measurements and the effects of pathophysiological factors which impact the stroke volume and transvalvular gradient measurements. In appropriate clinical situations, clinicians should take additional help of cardiac computational tomography, cardiac magnetic resonance imaging, and biomarkers.
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QT interval – Its measurement and clinical significance p. 71
Sita Ram Mittal
DOI:10.4103/JCPC.JCPC_44_18  
QT interval extends from the beginning of QRS complex to the end of T wave. Thus, it includes the duration of ventricular depolarization (QRS) and repolarization (J point to end of T wave). It corresponds to the duration of cellular action potential. “long-” and “short”-QT intervals are considered as risk markers for cardiac arrhythmias and sudden death. In the last decade, there have been significant advances in our understanding about measurement and significance of QT interval. We have made an attempt to review the literature to find the limitations and queries surrounding the present status of measurement of QT interval and its significance as a risk marker for cardiac arrhythmias and sudden death.
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EXPERT DOCUMENT Top

Republication- Indian academy of echocardiography guidelines and manual for performance of stress echocardiography in coronary artery disease p. 80
Nitin Burkule, Manish Bansal
DOI:10.4103/JCPC.JCPC_18_19  
Stress echocardiography is one of the most useful non-invasive diagnostic modalities for detection and evaluation of coronary artery disease (CAD). It is also very useful for assessment of cardiac response to hemodynamic stress in a variety of other cardiac and non-cardiac disorders. Given its cost-effectiveness, stress echocardiography is particularly suited for Indian scenario where the incidence of CAD is rising at an alarming rate and the astronomical expenditure required for its management is borne largely by the patients themselves. However, despite its unequivocal diagnostic value, stress echocardiography remains underutilized, particularly in India, due to the lack of adequate exposure and training in this modality. Unfortunately, while there is extensive literature available to document diagnostic accuracy of stress echocardiography, there are very few texts that actually describe how to perform stress echocardiography in real life. This Indian Academy of Echocardiography guideline document aims to fill this very void. This is a comprehensive 'how to do' document prepared with the objective of providing detailed description of the steps involved in performance and interpretation of stress echocardiography so that there is increased adoption of this important and clinically useful diagnostic modality in daily clinical practice. However, while stress echocardiography has several clinical applications, the present document is restricted to its main application, which is evaluation of CAD. Republished with permission from: Dr. Satish Govind, Editor-in-chief (Journal of the Indian Academy of Echocardiography & Cardiovascular Imaging).
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