“A Study on the Prevalence of Cardiorenal Syndrome In
Total Page:16
File Type:pdf, Size:1020Kb
“A STUDY ON THE PREVALENCE OF CARDIORENAL SYNDROME IN TYPE 2 DIABETIC PATIENTS” Dissertation submitted to THE TAMILNADU Dr. M.G.R MEDICAL UNIVERSITY CHENNAI-600 032 In partial fulfilment of the regulations For the award of the degree of M.D (GENERAL MEDICINE) BRANCH-1 Reg. No: 201711260 GOVT. CHENGALPATTU MEDICAL COLLEGE & HOSPITAL, CHENGALPATTU-603001. MAY-2020 CERTIFICATE This is to certify that the dissertation titled “A STUDY ON THE PREVALENCE OF CARDIORENAL SYNDROME IN TYPE 2 DIABETIC PATIENTS” is the bonafide original work of Dr. V. VIGNESH in partial fulfilment of the requirements for M.D. Branch-1 (General Medicine) Examination of the Tamil Nadu Dr. M.G.R. Medical University to be held in May 2020. The period of study was from June 2018 to May 2019. Prof. Dr. HARIHARAN M.S., MCh., Prof. Dr. R. NARMADHA LAKSHMI, M.D, Dch, DEAN Professor and HOD, Chengalpattu Medical College, Department of General Medicine Chengalpattu Chengalpattu Medical College, Chengalpattu. Place: Date BONAFIDE CERTIFICATE This is to certify that dissertation “A STUDY ON THE PREVALENCE OF CARDIORENAL SYNDROME IN TYPE 2 DIABETIC PATIENTS” is a bonafide work performed by Dr. V. VIGNESH, postgraduate student of General medicine, Chengalpattu medical college, Chengalpattu, under my guidance and supervision in fulfilment of regulations of The Tamil Nadu Dr. M.G.R Medical University for the award of M.D. Degree during the Academic period 2017-2020. Prof. Dr. R. NARMADHA LAKSHMI, M.D, Dch, Professor and HOD, Guide, Department of General Medicine Chengalpattu Medical College, Chengalpattu. Place: Date: DECLARATION I, Dr. VIGNESH.V, solemnly declare that dissertation titled “A STUDY ON THE PREVALENCE OF CARDIORENAL SYNDROME IN TYPE 2 DIABETIC PATIENTS” is a bonafide record of work done by me in the Department of Internal Medicine, Government Chengalpattu Medical College and Hospital during June 2018 to May 2019 under the guidance of Prof. Dr. R. NARMADHA LAKSHMI , M.D., Dch Professor of General Medicine, Government Chengalpattu Medical College and Hospital, Chengalpattu. This dissertation is submitted to Tamil Nadu Dr. M.G.R. Medical University, in partial fulfilment of the University regulations for the award of M.D. Degree (Branch 1) General Medicine- May 2020. SIGNATURE OF THE CANDIDATE Place: Date: ACKNOWLEDGEMENT I would like to thank our beloved Dean, Govt. Chengalpattu Medical College and Hospital, Dr. HARIHARAN, M.S, MCh, for permitting me to utilize the hospital facilities for this dissertation. I extend my sincere thanks to Prof. Dr. R. NARMADHA LAKSHMI, M.D., Dch Professor and Head of the Department of Medicine, and guide Govt. Chengalpattu Medical College and Hospital for her guidance during the study. Co-guide DR. S. RAVISHANKAR, M.D., Assistant Professor for his guidance and support throughout the conduct of the study and also during my post graduate course. I owe my sincere thanks to my Assistant Professor Dr. R. JAYALAKSHMI, M.D., and Dr. A . SENTHIL KUMARAN, M.D., for her valuable advice and appropriate suggestions. I am grateful to Dr. S. Ragothaman, M.D., D.M., and Dr. P. Suresh M.D., D.M., Assistant Professor Department of Cardiology for the guidance and encouragement. I thank Dr. N. Nagarajan M.D., D.M., Assistant Professor Department of Nephrology for the guidance and help provided during the study. I extend my thanks to family and my senior / Junior postgraduates, who stood by me during my times of need. Their help and support have been invaluable to the study. Finally, I thank all the patients for their extreme patience and cooperation. PLAGIARISM CERTIFICATE This is to certify that this dissertation work titled “A STUDY ON THE PREVALENCE OF CARDIORENAL SYNDROME IN TYPE 2 DIABETIC PATIENTS” of the candidate DR. V. VIGNESH., with registration Number 201711260 for the award of Degree of M.D in the branch of GENERAL MEDICINE-BRANCH-I. I personally verified the urkund.com website for the purpose of plagiarism Check. I found that the uploaded thesis file contains from introduction to conclusion pages and result shows 2% percentage of plagiarism in the dissertation. Prof. Dr. R. NARMADHA LAKSHMI, M.D, Dch, Professor and HOD, Department of General Medicine Chengalpattu Medical College, Chengalpattu. CONTENTS S. NO. TITLE PAGE NO. 1. INTRODUCTION 1 2. AIM OF THE STUDY 5 3. REVIEW OF LITERATURE 6 4. MATERIALS AND METHODS 41 5. RESULTS AND ANALYSIS 43 6. DISCUSSION 65 7. CONCLUSION 68 8. ABBREVIATIONS 69 9. BIBLIOGRAPHY 70 10. PROFORMA 77 11. MASTER CHART 79 INTRODUCTION The term cardio renal syndrome has been increasingly used at present. Diabetes is a most important risk factor for cardiorenal syndrome. CRS generally defined as pathophysiological disorder of the kidneys and Heart, whereas acute or chronic dysfunction of one organ may induce acute or chronic dysfunction of the other. Type 1 CRS defined as abrupt worsening of cardiac function (eg acute cardiogenic shock or decompensated congestive cardiac failure) leading to acute kidney injury. Type 2 CRS reflects a chronic abnormality in cardiac dysfunction (eg chronic congestive failure) lead to progressive chronic kidney disease. Type 3 CRS Comprises sudden worsening of renal function (eg acute kidney ischemia or glomerulonephritis) causing an acute cardiac dysfunction (heart failure, arrhythmia, ischemia) Type 4 CRS is defined as a state of chronic kidney disease (eg chronic glomerular disease) contributing to decreased cardiac function, left ventricular hypertrophy and increased risk of adverse cardiovascular events. Type 5 CRS nothing but systemic conditions (eg. sepsis, diabetes, Hypertension, amyloidosis, vascultis) causing both cardiac and renal dysfunction. 1 Over all pathogenesis of CRS Change in renin angiotensin aldosterone system Imbalance between nitric oxide and reactive oxygen species Inflammation Sympathetic nervous system Diabetes is an important risk factor for kidney disease and cardiovascular disease Biomarkers contribute early diagnosis of CRS & timely therapeutic intervention. In diabetes, common consequence of inflammation and oxidative related endothelial dysfunction is fibrosis. In heart failure and kidney disease, fibrosis is a common feature. Therefore, fibrosis is not only a marker, it is a primary driver of pathophysiology in several cardiorenal syndrome. Risk factors for worsening renal function while heart failure: Old age Comorbidities Drugs like diuretics leads to renal hypoperfusion ACE inhibitors and ARBs for RAAS blockade leading to renal impairment Prior Myocardial infarction Previous renal insufficiency. 2 Risk factors regarding LV failure in CKD Hypertension Diabetes Hypercholesterolemia Age Smoking Obesity Male sex 3 Diagnosis of CRS 1 by renal function test and renal biomarkers for acute kidney injury. Diagnosis of CRS 2 based on Kidney Disease: Improving Global Outcomes (KDIGO) / Kidney Disease Outcomes Qualitive Initiative (KDOQI) guidelines: albuminuria and /or GFR <60ml/min/1.73 sq m or a sustained decrease in GFR >5ml/min/1.73 sq m/yr or >10ml/min/1.73 sq m/5 yrs or sustained increase in albuminuria, along with documented or sustained appearance of CCF before the onset or progression of chronic kidney disease Diagnosis of cardiorenal syndrome type 3, 4 done by ECHO and cardiac biomarkers. CRS 5 is identified by both renal and cardiac biomarkers, echo and renal function test, ultrasound. Treatment mainly target on the primary events of cardiorenal syndrome and glycemic control. 4 AIMS &OBJECTIVES To assess the prevalence of cardiorenal syndrome in type 2 diabetic patients. To correlate the duration of diabetes and occurrence of cardiorenal syndrome. 5 REVIEW OF LITERATURE CARDIO-RENAL SYNDROME INTRODUCTION The global increase in disease of kidneys and heart is associated with a significant impact mainly on morbidity and mortality rates. A disease causing dysfunction of one organ may lead to a dysfunction of another distant organ due to inter-organ crosstalk pathways. Eg, dysfunction of the heart may affect kidneys negatively and vice-versa. Cardiac and renal functions overlaping and both organ shares common vascular risk factors like diabetes and hypertension. Coexistence of heart and kidney dysfunction defined as a“cardio-renal syndrome” (CRS).This umbrella term denotes primary acute or chronic dysfunction of one, i.e. either the heart or the kidneys, which contribute to the acute or chronic dysfunction of other organ. The Acute Dialysis Quality Initiative (ADQI) work group defined and classified the CRS. This group defined CRS as ‘disorders of the heart and kidneys whereby acute or chronic dysfunction of one organ may affect acute or chronic dysfunction of the other organ’. Epidemiological data shows the rising of incidence of chronic cardiac diseases including hypertension, heart failure and valvular heart disease have led to increased prevalence of the CRS.4 Epidemiology of CRS have limited Indian data. In hospitalized patients Indian study, all age groups having CRS, elderly male patients more commonly involved.2 One more study involving hospitalized 6 children, significant risk of mortality seen associated with an increasing incidence of CRS.5 The Acute Decompensated Heart Failure National Registry (ADHERE)6 data shows more than 100,000 patients associated with heart failure (HF) required hospitalization, in that approximately 30% have a diagnosis of chronic kidney disease (CKD) (serum creatinine being greater than 2.0 mg/dl). Over 60% of that patients included in this registry with acute decompensated HF (ADHF) have a stage 3 (GFR<60ml/min per 1.73 m2) or higher stages of Chronic kidney disease. In “Organ Crosstalk”, complex biological communications and feedback mechanisms occur between the two distant organs for maintaining the normal physiological response of the human body. It is medicated via cellular, molecular, neural and endocrine pathways. This pathway maintaining homeostasis. But when one organ develops a dysfunction because of disease states, this one lead to initiate and perpetuate structural /functional dysfunction of the another organ also. An, acute and chronic cardiac diseases can directly reflects to the concurrent acute / chronic worsening of the renal function or vice versa.