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Srinivas S, Swaminathan N, Ravishankar G, Justin Paul G, Venkatesan S. Not So Innocent Heart: Echo Assessment of Obstructive COR Triatriatum with Cleft Mitral Valve. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Srinivas S, Swaminathan N, Ravishankar G, Justin Paul G, Venkatesan S. Alcoholic Cardiomyopathy Mimicking as LMCA Disease - A Rare Case Report. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Anbarasan S, Swaminathan N, Ravishankar G, Paul J, Venkatesan S. Acute aortic dissection presenting as st segment elevation myocardial infarction- importance of clinical examination revisited. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Anbarasan S, Swaminathan N, Ravishankar G, Paul G, Venkatesan S, Majella C. Electrocardiographic Changes in Ostium Secundum Atrial Septal Defect- Before and after Shunt Closure- A Retrospective Cohort Analysis. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Iliyas M, Swaminathan N, Ravishankar G, Srinivasan K, Manimegalai E, Elangovan C, Venkatesan S, Nageshwaran P, Justin Paul G. Pharmaco-invasive therapy Vs primary PCI in A tertiary referral hospital in South India: A prospective observational study. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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31
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Hariharan N, Nandakumaran M, Swaminathan N, Venkatesan S, Nageshwaran P, Majella C. Situs Inversus with Levocardia, Congenitally Corrected Transposition of Great Vessels, Right Sided Aortic Arch, Inverted Coranaries in a 46 Year Old Female. Indian Heart J 2019. [DOI: 10.1016/j.ihj.2019.11.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Vasnik GK, Venkatesan S, Sharma S, Malik A. Plasma cell neoplasm with varied morphology: A report of two cases. J Lab Physicians 2019; 11:281-283. [PMID: 31579230 PMCID: PMC6771323 DOI: 10.4103/jlp.jlp_172_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Plasma cell (PC) neoplasm (PCN) with varied morphology has been described in the literature. The majority of clonal proliferation of PCs is composed of easily recognizable morphology in the bone marrow (BM). However, few cases may cause diagnostic complexity, as they exhibit varied cytological and architectural heterogeneity which may pose problem in morphological diagnosis and require the use of ancillary techniques like immunohistochemistry (IHC). We illustrate here two such cases of PCN with varied morphology in BM aspirate, in the form of clustering/rosetting and multiple clear cytoplasmic vacuoles, respectively, leading to varied differential diagnosis. However, later, the histopathological features on BM biopsy findings were relatively characteristic and IHC confirmed the final diagnosis. The morphological variants documented in both these cases are exceptional and representative of the various forms of atypical PCs.
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Venkatesan S, Thangaraju P. Leprosy in French Polynesia-points focused. New Microbes New Infect 2019; 30:100559. [PMID: 31193308 PMCID: PMC6525310 DOI: 10.1016/j.nmni.2019.100559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 04/11/2019] [Indexed: 10/31/2022] Open
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Mathew AE, Kumar Y, Angeline RP, Christopher P, Rehman SP, Venkatesan S. Workplace-based assessment of family medicine competencies using "field note tool" - A pilot study. J Family Med Prim Care 2019; 7:1458-1463. [PMID: 30613542 PMCID: PMC6293892 DOI: 10.4103/jfmpc.jfmpc_141_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Department of Family Medicine in a medical college in South India introduced "field note" (FN) as a tool for Work-Place Based Assessment in postgraduate training. FN collects "open-ended" feedback from both resident and faculty and helps them to arrive at an action plan. This study describes our experience of implementing FN and perceptions of learners and faculty. Methods While precepting the residents in Family Medicine service areas, faculty documented their observations of the resident's clinical work using FN and provided an action plan. Faculty and residents described their experience and provided feedback. Focus group discussions were conducted for faculty and residents. Data were coded and grouped into themes. Results Four residents and seven faculties participated in the study during 12 weeks period using 17 consultations. Clinical expert (13/17) and communicator (6/17) are the most commonly assessed competencies followed by professionalism (2/17) and collaborator (2/17). Faculty and residents agreed that "FN" was a useful tool and it helped the faculty to give feedback and guide the learner. Residents and faculty arrived at an action plan in 70% of the consultations. Three of four residents perceived the change in their behaviour positively after the use of FN. Both resident and faculty found the rating of the learner using Dreyfus scale as a barrier. Conclusion FN could be one of the important tools in our "Toolbox of Assessment Methods" for family medicine specialty. There is a need for sensitizing the learners to feedback process and training the faculty in assessment and feedback.
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Nenwani D, Ganesan G, Venkatesan S, Babu SS. Quadrivalvular rheumatic heart disease. JOURNAL OF THE INDIAN ACADEMY OF ECHOCARDIOGRAPHY & CARDIOVASCULAR IMAGING 2019. [DOI: 10.4103/jiae.jiae_45_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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36
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Venkatesan S, Myles PR, Manning HJ, Mozid AM, Andersson C, Jørgensen ME, Hardman JG, Moonesinghe SR, Foex P, Mythen M, Grocott MPW, Sanders RD. Cohort study of preoperative blood pressure and risk of 30-day mortality after elective non-cardiac surgery. Br J Anaesth 2018. [PMID: 28633374 DOI: 10.1093/bja/aex056] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Preoperative blood pressure (BP) thresholds associated with increased postoperative mortality remain unclear. We investigated the relationship between preoperative BP and 30-day mortality after elective non-cardiac surgery. Methods We performed a cohort study of primary care data from the UK Clinical Practice Research Datalink (2004-13). Parsimonious and fully adjusted multivariable logistic regression models, including restricted cubic splines for numerical systolic and diastolic BP, for 30-day mortality were constructed. The full model included 29 perioperative risk factors, including age, sex, comorbidities, medications, and surgical risk scale. Sensitivity analyses were conducted for age (>65 vs <65 years old) and the timing of BP measurement. Results A total of 251 567 adults were included, with 589 (0.23%) deaths within 30 days of surgery. After adjustment for all risk factors, preoperative low BP was consistently associated with statistically significant increases in the odds ratio (OR) of postoperative mortality. Statistically significant risk thresholds started at a preoperative systolic pressure of 119 mm Hg (adjusted OR 1.02 [95% confidence interval (CI) 1.01-1.02]) compared with the reference (120 mm Hg) and diastolic pressure of 63 mm Hg [OR 1.24 (95% CI 1.03-1.49)] compared with the reference (80 mm Hg). As BP decreased, the OR of mortality risk increased. Subgroup analysis demonstrated that the risk associated with low BP was confined to the elderly. Adjusted analyses identified that diastolic hypertension was associated with increased postoperative mortality in the whole cohort. Conclusions In this large observational study we identified a significant dose-dependent association between low preoperative BP values and increased postoperative mortality in the elderly. In the whole population, elevated diastolic, not systolic, BP was associated with increased mortality.
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Anbarasan S, Swaminathan N, Venkatesan S. Recurrent laryngeal nerve palsy (cardiovocal syndrome) in dilated cardiomyopathy - Reversal with optimal medical management. Indian Heart J 2018. [DOI: 10.1016/j.ihj.2018.10.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Thangaraju P, Venkatesan S, Sivashanmugam E, Showkath Ali MK. Target Hansen's disease. J Family Med Prim Care 2018; 7:838. [PMID: 30234065 PMCID: PMC6132014 DOI: 10.4103/jfmpc.jfmpc_15_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Andola N, Prakash S, Venkatesan S, Verma S. Secure and lightweight multi user searchable encryption scheme. JOURNAL OF INTELLIGENT & FUZZY SYSTEMS 2018. [DOI: 10.3233/jifs-169668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Jørgensen ME, Andersson C, Venkatesan S, Sanders RD. Beta-blockers in noncardiac surgery: Did observational studies put us back on safe ground? Br J Anaesth 2018; 121:16-25. [PMID: 29935568 DOI: 10.1016/j.bja.2018.02.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/10/2018] [Accepted: 02/07/2018] [Indexed: 01/10/2023] Open
Abstract
Based on landmark trials, international guidelines had for years promoted the use of beta-blockers in the setting of non-cardiac surgery. In 2011, concerns were raised regarding the integrity of some of the landmark trials, as the Dutch Erasmus Medical Center found some of them to be scientifically incorrect. Based on the remaining studies that were to be trusted, investigations showed that, in contrast to prior beliefs, the widespread use of perioperative beta-blockers might be harmful. A call for further investigations into the matter ushered in several observational studies evaluating the safety of perioperative beta-blocker therapy in specific patient subgroups. Within this review, we discuss important aspects for making these decisions, and compare the major observational studies and specific estimates of risk in subgroups of interest. We conclude that patients at high risk with heavy co-morbidities, such as heart failure, may benefit from beta-blocker therapy, whereas low-risk patients, such as patients with uncomplicated hypertension, may be at increased risk with beta-blocker therapy. We provide a critical review of current perioperative guidelines in view of the new observational data, suggesting that the recommended schematics, such as the Revised Cardiac Risk Index, for risk stratification of patients in this setting may be suboptimal. Further, we provide discussions of other aspects, including risk of sepsis, type of beta-blocker, and the potential of perioperative beta-blocker withdrawal, which may be important in guiding future studies. Summarising the current evidence, we argue that, after a precarious decade, we may just now, be back on safe ground.
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Venkatesan S, Rosenthal R, Kanu N, McGranahan N, Bartek J, Quezada SA, Hare J, Harris RS, Swanton C. Perspective: APOBEC mutagenesis in drug resistance and immune escape in HIV and cancer evolution. Ann Oncol 2018; 29:563-572. [PMID: 29324969 PMCID: PMC5888943 DOI: 10.1093/annonc/mdy003] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like (APOBEC) mutational signature has only recently been detected in a multitude of cancers through next-generation sequencing. In contrast, APOBEC has been a focus of virology research for over a decade. Many lessons learnt regarding APOBEC within virology are likely to be applicable to cancer. In this review, we explore the parallels between the role of APOBEC enzymes in HIV and cancer evolution. We discuss data supporting the role of APOBEC mutagenesis in creating HIV genome heterogeneity, drug resistance, and immune escape variants. We hypothesize similar functions of APOBEC will also hold true in cancer.
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Thangamuthukumar KG, Karthikeyan S, Gnanavelu G, Swaminathan N, Venkatesan S. An unusual case of right atrial mass. JOURNAL OF THE INDIAN ACADEMY OF ECHOCARDIOGRAPHY & CARDIOVASCULAR IMAGING 2018. [DOI: 10.4103/jiae.jiae_50_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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43
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Seenivasan A, Venkatesan S, Panda T. Cellular Localization and Production of Lovastatin from Monascus purpureus. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Kongunattan KV, Swaminathan N, Venkatesan S. An unusual complication of perimembranous ventricular septal defect with infective endocarditis: Vegetations obstructing right ventricular outflow tract and pulmonary valve. JOURNAL OF THE INDIAN ACADEMY OF ECHOCARDIOGRAPHY & CARDIOVASCULAR IMAGING 2018. [DOI: 10.4103/jiae.jiae_48_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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45
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Karthik N, Gnanavelu G, Swaminathan N, Venkatesan S. Mitral annular plane excursion (MAPSE) correlation with ejection fraction in cardiovascular disease. Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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46
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Nachiappan K, Swaninathan N, Gnanavelu G, Venkatesan S. An observational study on the timing of appearance of coronary collaterals during acute ST elevation myocardial infarction (STEMI). Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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47
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Nachiappan K, Swaminathan N, Venkatesan S. A study on the left atrial volume and its correlation with left ventricular diastolic dysfunction in normal Indian population. Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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48
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Princy SA, Majella JCM, Paul GJ, Venkatesan S. A study on pregnancy following prosthetic valve: Expect hemodynamic triumph in most! Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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49
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Kumar BM, Paul GJ, Swaminathan N, Gnanavelu G, Ravishankar G, Kumar N, Venkatesan S. Assessment of hemodynamic and clinical response in thrombolytic therapy for prosthetic valve thrombosis. Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.215] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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50
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Zakir Hussain G, Cecily Mary Majella J, Swaminathan N, Gnanavelu G, Ravishanker G, Justin Paul G, Kumaran N, Venkatesan S. An echocardiographic correlation of pulmonary artery size in pulmonary hypertension. Indian Heart J 2017. [DOI: 10.1016/j.ihj.2017.09.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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