Essentials of Bedside Cardiology CONTEMPORARY CARDIOLOGY

Total Page:16

File Type:pdf, Size:1020Kb

Essentials of Bedside Cardiology CONTEMPORARY CARDIOLOGY Essentials of Bedside Cardiology CONTEMPORARY CARDIOLOGY CHRISTOPHER P. CANNON, MD SERIES EDITOR Aging, Heart Disease and Its Management: Facts and Controversies, edited by Niloo M. Edwards, MD, Mathew S. Maurer, MD, and Rachel B. Wellner, MD, 2003 Peripheral Arterial Disease: Diagnosis and Treatment, edited by Jay D. Coffman, MD, and Robert T. Eberhardt, MD, 2003 Essentials ofBedside Cardiology: With a Complete Course in Heart Sounds and Munnurs on CD, Second Edition, by Jules Constant, MD, 2003 Primary Angioplasty in Acute Myocardial Infarction, edited by James E. Tcheng, MD,2002 Cardiogenic Shock: Diagnosis and Treatment, edited by David Hasdai, MD, Peter B. Berger, MD, Alexander Battler, MD, and David R. Holmes, Jr., MD, 2002 Management of Cardiac Arrhythmias, edited by Leonard I. Ganz, MD, 2002 Diabetes and Cardiovascular Disease, edited by Michael T. Johnstone and Aristidis Veves, MD, DSC, 2001 Blood Pressure Monitoring in Cardiovascular Medicine and Therapeutics, edited by William B. White, MD, 2001 Vascular Disease and Injury: Preclinical Research, edited by Daniell. Simon, MD, and Campbell Rogers, MD 2001 Preventive Cardiology: Strategies for the Prevention and Treatment of Coronary Artery Disease, edited by JoAnne Micale Foody, MD, 2001 Nitric Oxide and the Cardiovascular System, edited by Joseph Loscalzo, MD, phD and Joseph A. Vita, MD, 2000 Annotated Atlas of Electrocardiography: A Guide to Confident Interpretation, by Thomas M. Blake, MD, 1999 Platelet Glycoprotein lIb/IlIa Inhibitors in Cardiovascular Disease, edited by A. Michael Lincoff, MD, and Eric J. Topol, MD, 1999 Minimally Invasive Cardiac Surgery, edited by Mehmet C. Oz, MD and Daniel J. Goldstein, MD, 1999 Management ofAcute Coronary Syndromes, edited by Christopher P. Cannon, MD, 1999 Essentials of Bedside Cardiology WITH A Complete Course in Heart Sounds and Murmurs on CD SECOND EDITION Jules Constant, MO, FACC Clinical Associate Professor of Medicine State University of New York at Buffalo School of Medicine Buffalo, NY Humana Press *- Totowa, New Jersey © 2003 Humana Press Inc. Softcover reprint of the hardcover 1 st edition 2003 999 Riverview Drive, Suite 208 Totowa, New Jersey 07512 www.humanapress.com All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording, or otherwise without written permission from the Publisher. The content and opinions expressed in this book are the sole work of the authors and editors, who have warranted due diligence in the creation and issuance of their work. The publisher, editors, and authors are not responsible for errors or omissions or for any consequences arising from the information or opinions presented in this book and make no warranty, express or implied, with respect to its contents. Due diligence has been taken by the publishers, editors, and authors of this book to assure the accuracy of the information published and to describe generally accepted practices. The contributors herein have care­ fully checked to ensure that the drug selections and dosages set forth in this text are accurate and in accord with the standards accepted at the time of publication. Notwithstanding, since new research, changes in government regulations, and knowledge from clinical experience relating to drug therapy and drug reactions constantly occur, the reader is advised to check the product information provided by the manufacturer of each drug for any change in dosages or for additional warnings and contraindications. This is of utmost importance when the recommended drug herein is a new or infrequently used drug. It is the responsibility of the treating physician to determine dosages and treatment strategies for individual patients. Further, it is the responsi­ bility of the health care provider to ascertain the Food and Drug Administration status of each drug or device used in their clinical practice. The publishers, editors, and authors are not responsible for errors or omissions or for any consequences from the application of the information presented in this book and make no warranty, express or implied, with respect to the contents in this publication. This publication is printed on acid-free paper. ® ANSI Z39.48-1984 (American National Standards Institute) Permanence of Paper for Printed Library Materials. Cover design by Patricia F. Cleary. For additional copies, pricing for bulk purchases, andlor information about other Humana titles, contact Humana at the above address or at any of the following numbers: Tel: 973-256-1699; Fax: 973-256-8341; E-mail: [email protected] or visit our website at http://humanapress.com Photocopy Authorization Policy: Authorization to photocopy items for internal or personal use, or the internal or personal use of specific clients, is granted by Humana Press Inc., provided that the base fee of US $20.00 per copy is paid directly to the Copyright Clearance Center at 222 Rosewood Drive, Danvers, MA 01923. Forthose organizations that have been granted a photocopy license from the CCC, a separate system of payment has been arranged and is acceptable to Humana Press Inc. The fee code for users of the Transactional Reporting Service is: [1-58829- 142-1/03 $20.00]. 10987654321 Library of Congress Cataloging in Publication Data Additional material to this book can be downloaded from http://extras.springer.com. Constant, Jules, 1922- Essentials of bedside cardiology: with a complete course in heart sounds and murmurs on CD 1 by Jules Constant.--2nd ed. p. ; cm. -- (Contemporary cardiology) Rev. ed. of: Essentials of bedside cardiology for students and house staff. 1st ed. c1989. Includes bibliographical references and index. ISBN 978-1-4684-9754-0 ISBN 978-1-59259-338-5 (eBook) DOI 10.1007/978-1-59259-338-5 I. Heart--Examination. 2. Heart--Diseases--Diagnosis. 3. Heart--Sounds. 4. Medical history taking. I. Constant, Jules, 1922- Essentials of bedside cardiology for students and house staff. II. Title. III. Contem­ porary cardiology (Totowa, N.J. : Unnumbered) [DNLM: I. Heart Diseases--diagnosis. 2. Heart Sounds. 3. Physical Examination. WG 141 C757ea 2002] RC683.C593 2002 616.1'2--dc21 2002190222 To Elizabeth my wife, without whom this book might never have been published Preface Essentials of Bedside Cardiology, Second Edition, like the first edition, is designed for those who wish to balance technological advances with increased personal skill in history taking and physical examination. It is important to teach physicians that all technologies now in use for diagnosing cardiovascular disorders, such as echocardiography, can have false positive and false negative results. It is not always wise to rely on these technologies alone; indeed, they may not even be available in some settings. Even when the full panoply of up-to-date techniques is at the physician's disposal, the patient may not be a good candidate for an echocardiogram, or the technician or reader may not be well qualified, or the equipment itself may be substandard. Technology must be combined with physical examination to decide what is true and what is false. The practice of expert history taking and physical examination returns the physician to the actual patient, where the physician can feel like a "real doctor" rather than a mere interpreter of laboratory data. Essentials of Bedside Cardiology, Second Edition, strives to teach and not simply to tell the facts, relying on three basic methods derived from the psychology of teaching and learning: 1. Explain the facts. 2. Use a question and answer format-the Socratic method. 3. Provide tricks or mnemonics to help the reader remember the facts. The value of the Socratic method is its ability to focus attention and stimulate thinking. The format of Essentials of Bedside Cardiology, Second Edition, supports this goal by allowing the reader to cover up the answer and so use the book as a programmed learning tool. A demonstration of all the heart sounds and murmurs with detailed explanations of what is being heard is provided on the enclosed CD. No simulators have been used. In addition, the use of phonocardiograms and pulse tracings for teaching is encouraged throughout the text. vii viii Preface The index also is a learning tool, having been compiled by me, based on 40 years of teaching experience, with the goal of efficiently guiding the reader to the information needed. The glossary, too, is designed for all levels of readers, constituting a virtual encyclopedia of terms for the cardiologist, student, and noncardiologist alike. Terms that are fully explained in the glossary are typeset in boldface throughout the text as one more pedagogical aid. Essentials of Bedside Cardiology, Second Edition, is the only book that teaches how to recognize normal jugular waves using updated terminology, how to measure jugular pressure accurately, how to record auscultation findings with an auscultogram, how to tell cardiac function by the blood pressure cuff and Val salva method, how to diagnose cardiomegaly on an X -ray without using the outdated cardiothoracic ratio, and how to tell whether the apex beat is due to the right or left ventricle. It also gives the latest explanation for the changing loudness of the first heart sound with changing P-R intervals and updates methods for recording and taking an accurate blood pressure. lules Constant, MD, FACC Contents Preface .......................................................................................
Recommended publications
  • General Physical Examination Skills for Ahps
    General Physical Examination Techniques for the Rheumatology Clinic This manual has been developed as an overview of the general examination of the rheumatology patient. Certain details have been specifically omitted because they have no relevance when examining a stable out patient in the rheumatology clinic. Vital Signs 1. Heart rate 2. Blood pressure 3. Weight 1. Heart Rate There are two things you want to document when assessing heart rate: The actual rate and the rhythm. Rate: count pulse for at least 15 – 30 seconds (e.g., if you count the rate for 15 seconds, multiply this result by 4 to determine heart rate). The radial pulse is most commonly used to assess the heart rate. With the pads of your index and middle fingers, compress the radial artery until a pulsation is detected. Normal 60-100 bpm Bradycardia <60 bpm Tachycardia >100 bpm 2. Heart Rhythm The rhythm should be regular. A regularly irregular rhythm is one where the pulse is irregular but there is a pattern to the irregularity. For example every third beat is dropped. An irregularly irregular rhythm is one where the pulse is irregular and there is no pattern to the irregularity. The classic example of this is atrial fibrillation. 3. Blood Pressure Blood pressure should be measured in both arms, and should include an assessment of orthostatic change How to measure the Brachial Artery Blood Pressure: • Patient should be relaxed, in a supine or sitting position, with the arms positioned correctly(at, not above, the level of the heart) • Remember that measurements should be taken bilaterally • Choice of appropriate cuff size for the patient is important to accuracy of measured blood pressure.
    [Show full text]
  • Blood Pressure (BP) Measurements in Adults
    Page 5 Blood Pressure (BP) Measurements in Adults Ramesh Khanna, MD Karl D. Nolph, MD Chair in Nephrology Professor of Medicine Director, Division of Nephrology University of Missouri-Columbia Uncontrolled high blood pressure is present in every 3rd person in the American community and is attributed to be a major risk factor for progression of chronic kidney disease, coronary artery disease, and stroke. Therefore, blood pressure recording is the most common measurements at home and by healthcare professionals in all of clinical medicine. It might come as a surprise that majority of recordings are done in a less than ideal circumstances and consequently performed inaccurately. BP measurements using mercury sphygmomanometer by a trained health care professional is the gold standard for clinical assessment of blood pressures. The appearance of the 1st Korotkoff sound signals the systolic blood pressure and the disappearance of the 5th sound denotes the diastolic blood pressure. The hypertension experts believe and have increasing evidence to suggest that this method frequently either over diagnose hypertension or fail to recognize masked hypertension (blood pressure that is normal in the physician’s office setting but high at other times including at home). The four commonly recognized reasons for this are: Avoidable inaccuracies in the methods, The inherent variability of blood pressure; and The tendency for blood pressure to increase in the presence of a health care professional (the so-called white coat effect). Failure to standardize blood pressure measurement dos and don’ts. It is believed and also to some extent evidence based that the health care providers including physicians often do not follow established guidelines for blood pressure measurement.
    [Show full text]
  • Blood Pressure Year 1 Year 2 Core Clinical/Year 3+
    Blood Pressure Year 1 Year 2 Core Clinical/Year 3+ Do Do • Patient at rest for 5 minutes • Measure postural BP and pulse in patients with a • Arm at heart level history suggestive of volume depletion or • Correct size cuff- bladder encircles 80% of arm syncope • Center of cuff aligns with brachial artery -Measure BP and pulse in supine position • Cuff wrapped snugly on bare arm with lower -Slowly have patient rise and stand (lie them down edge 2-3 cm above antecubital fossa promptly if symptoms of lightheadedness occur) • Palpate radial artery, inflate cuff to 70 mmHg, -Measure BP and pulse after 1 minute of standing then increase in 10 mmHg increments to 30 mmHg above point where radial pulse disappears. Know Deflate slowly until pulse returns; this is the • Normally when a person stands fluid shifts to approximate systolic pressure. lower extremities causing a compensatory rise in • Auscultate the Korotkoff sounds pulse by up to 10 bpm with BP dropping slightly -place bell lightly in antecubital fossa • Positive postural vital signs are defined as -inflate BP to 20-30mmHg above SBP as determined symptoms of lightheadedness and/or a drop in by palpation SBP of 20 mmHg with standing -deflate cuff at rate 2mmHg/second while auscultating • Know variations in BP cuff sizes -first faint tapping (Phase I Korotkoff) = SBP; • A lack of rise in pulse in a patient with an Disappearance of sound (Phase V Korotkoff)=DBP orthostatic drop in pressure is a clue that the Know cause is neurologic or related or related to -Korotkoff sounds are lower pitch, better heard by bell medications (eg.
    [Show full text]
  • Does This Patient Have Aortic Regurgitation?
    THE RATIONAL CLINICAL EXAMINATION Does This Patient Have Aortic Regurgitation? Niteesh K. Choudhry, MD Objective To review evidence as to the precision and accuracy of clinical examina- Edward E. Etchells, MD, MSc tion for aortic regurgitation (AR). Methods We conducted a structured MEDLINE search of English-language articles CLINICAL SCENARIO (January 1966-July 1997), manually reviewed all reference lists of potentially relevant You are asked to see a 59-year-old articles, and contacted authors of relevant studies for additional information. Each study woman with liver cirrhosis who will be (n = 16) was independently reviewed by both authors and graded for methodological undergoing sclerotherapy for esopha- quality. geal varices. When she was examined by Results Most studies assessed cardiologists as examiners. Cardiologists’ precision for her primary care physician, she had a detecting diastolic murmurs was moderate using audiotapes (k = 0.51) and was good pulse pressure of 70 mm Hg. The pri- in the clinical setting (simple agreement, 94%). The most useful finding for ruling in mary care physician is concerned about AR is the presence of an early diastolic murmur (positive likelihood ratio [LR], 8.8- the possibility of aortic regurgitation 32.0 [95% confidence interval {CI}, 2.8-32 to 16-63] for detecting mild or greater AR (AR) and asks you whether endocardi- and 4.0-8.3 [95% CI, 2.5-6.9 to 6.2-11] for detecting moderate or greater AR) (2 tis prophylaxis is necessary for sclero- grade A studies). The most useful finding for ruling out AR is the absence of early di- astolic murmur (negative LR, 0.2-0.3 [95% CI, 0.1-0.3 to 0.2-0.4) for mild or greater therapy.
    [Show full text]
  • A Review of Pericardial Diseases: Clinical, ECG and Hemodynamic Features and Management
    REVIEW SHAM IK AIKAT, MD SASAN GHAFFARI, MD Department of Cardiology, Cleveland Clinic Department of Cardiology, Cleveland Clinic A review of pericardial diseases: Clinical, ECG and hemodynamic features and management ABSTRACT ECAUSE PERICARDIAL DISEASES are com- mon and often misdiagnosed, physi- Pericardial diseases are common, have multiple causes, and cians need to he familiar with their presenta- are often misdiagnosed. Physicians need to recognize the tions and distinguishing features. characteristic and distinguishing features of the three most This article reviews the clinical features, important pericardial conditions: acute pericarditis, cardiac diagnosis, and management of acute pericardi- tamponade, and constrictive pericarditis. In these tis, cardiac tamponade, and constrictive peri- conditions, proper diagnosis and appropriate management carditis. can significantly reduce morbidity and mortality. • THE PERICARDIUM KEY POINTS The pericardium envelopes the heart, extend- ing on to the adventitia of the great vessels. It Acute pericarditis is an important part of the differential is 1 to 2 mm thick and consists of an outer and diagnosis of chest pain syndromes and needs to be an inner layer. The tough, fibrous outer layer is distinguished from acute myocardial infarction both called the parietal pericardium, and the serous clinically and electrocardiographically. inner layer is called the visceral pericardium. The parietal and visceral pericardium are sep- Suspect pericardial tamponade in any patient with acute arated by fluid: 15 to 50 mL of an ultrafiltrate dyspnea, especially in the presence of a pericardial rub, of plasma that acts as a lubricant.1-2 elevated jugular venous pressure, and hypotension. The pericardium limits excessive cardiac movement and acute cardiac distension.
    [Show full text]
  • Systolic Murmurs
    Murmurs and the Cardiac Physical Exam Carolyn A. Altman Texas Children’s Hospital Advanced Practice Provider Conference Houston, TX April 6 , 2018 The Cardiac Physical Exam Before applying a stethoscope….. Some pearls on • General appearance • Physical exam beyond the heart 2 Jugular Venous Distention Pallor Cyanosis 3 Work of Breathing Normal infant breathing Quiet Tachypnea Increased Rate, Work of Breathing 4 Beyond the Chest Clubbing Observed in children older than 6 mos with chronic cyanosis Loss of the normal angle of the nail plate with the axis of the finger Abnormal sponginess of the base of the nail bed Increasing convexity of the nail Etiology: ? sludging 5 Chest ❖ Chest wall development and symmetry ❖ Long standing cardiomegaly can lead to hemihypertrophy and flared rib edge: Harrison’s groove or sulcus 6 Ready to Examine the Heart Palpation Auscultation General overview Defects Innocent versus pathologic 7 Cardiac Palpation ❖ Consistent approach: palm of your hand, hypothenar eminence, or finger tips ❖ Precordium, suprasternal notch ❖ PMI? ❖ RV impulse? ❖ Thrills? ❖ Heart Sounds? 8 Cardiac Auscultation Where to listen: ★ 4 main positions ★ Inching ★ Ancillary sites: don’t forget the head in infants 9 Cardiac Auscultation Focus separately on v Heart sounds: • S2 normal splitting and intensity? • Abnormal sounds? Clicks, gallops v Murmurs v Rubs 10 Cardiac Auscultation Etiology of heart sounds: Aortic and pulmonic valves actually close silently Heart sounds reflect vibrations of the cardiac structures after valve closure Sudden
    [Show full text]
  • Simbaby™ Specs
    SimBaby™ Specs Normal & Difficult Airway • Airway opening acquired by head tilt, chin lift and jaw trust • Oropharyngeal and nasopharyngeal airways • Bag-Valve-Mask ventilation • Orotracheal and nasotracheal intubation • Sellick Maneuver • LMA insertion • Endotracheal tube insertion • Fiberoptic intubation • Gastric tube insertion • Variable lung compliance • Variable airway resistance • Tongue edema • Laryngospasm • Pharyngeal swelling • Decreased lung compliance • Right mainstem intubation • Gastric distention Pulmonary System • Spontaneous breathing with variable rate, depth and regularity • Bilateral and unilateral chest rise and fall • CO2 exhalation • Normal and abnormal breath sounds – bilateral • Lung Sounds: Normal, course crackles, fine crackles, stridor, wheezes and rhonchi • Oxygen saturation • See-saw respiration • Retractions • Pneumothorax • Unilateral chest movement • Unilateral breath sounds • Unilateral needle thoracentesis mid-clavicular • Unilateral chest tube insertion Cardiovascular System • Extensive ECG library with rate from 20-360 • CPR compressions generate palpable pulses, blood pressure waveform, and generate artifacts on ECG • Heart Sounds:Normal, systolic murmur, holosystolic murmur, diastolic murmur, continuous murmur and gallop • Blood pressure (BP) measured manually by auscultation of Korotkoff sounds • Pulses: Unilateral radial and brachial pulse and bilateral femoral pulses synchronized with ECG • Pulse strength variable with BP • Display of cardiac rhythms via 3-lead ECG monitoring • 12-lead dynamic
    [Show full text]
  • Blood Pressure Measurement Standardization Protocol
    Blood Pressure Measurement Standardization Protocol www. hearthighway.org 801-538-6141 We would like to extend a special Thank You to Dr. Roy Gandolfi for his help in editing this manual. This manual was funded in part by the Centers for Disease Control and Prevention through the Utah Heart Disease and Stroke Prevention Program, cooperative agreement number U50/CCU821337-05. The contents of this report are solely the responsibility of the authors and do not represent the opinions of the CDC Revised July 2006 Table of Contents 1. What is Blood Pressure? 2 2. Hypertension Overview 4 3. Non-Modifiable Risk Factors 5 4. Modifiable Risk Factors 6 5. Importance of Accuracy 8 6. Knowing the Equipment 9 7. Automated Blood Pressure Cuffs 11 8. Mercury Manometers 12 9. Pulse Obliteration Technique 13 10. Treatment and Referral for Adults 19 11. Treatment and Referral for Individuals over age 60 21 12. Treatment and Referral for Children 23 13. References 26 Appendices A: Following the DASH Diet B: Weigh In For Better Health C: Algorithm for Treatment of Hypertension D: Blood Pressure Levels by Gender, Age and Height Percentile E: CDC Growth Chart for Boys F: CDC Growth Chart for Girls G: Blood Pressure Management Quiz H: Blood Pressure Practicum 1 What is Blood Pressure? Key Abbreviations BP- Blood Pressure SBP- Systolic Blood Pressure DBP- Diastolic Blood Pressure JNC7- Seventh Report of the Joint National Committee on the Prevention, Detection, Evaluation and Treatment of High Blood Pressure CVD- Cardiovascular Disease BMI- Body Mass Index ABPM- Ambulatory Blood Pressure Monitoring ACE- Angiotensin-converting enzyme β-blockers- Beta-blockers LVH- Left Ventricular Hypertrophy Definitions Blood Pressure- measurement of the force exerted by blood against the walls of the arteries.
    [Show full text]
  • Physician Examination Procedures Manual
    Physician Examination Procedures Manual September 2011 TABLE OF CONTENTS Chapter Page 1 OVERVIEW OF PHYSICIAN EXAMINATION .......................................... 1-1 1.1 The Role of the Physician in NHANES .............................................. 1-1 1.2 Medical Policy Regarding the Examination ....................................... 1-2 1.2.1 Presence in MEC during MEC Examinations ..................... 1-2 1.2.2 Response to Medical Emergencies ...................................... 1-3 1.2.3 Maintenance of Emergency Equipment and Supplies ......... 1-3 1.3 Physician Examination ....................................................................... 1-3 1.4 Maintenance of Physician’s Examination Room ................................ 1-4 2 EQUIPMENT AND SUPPLIES ...................................................................... 2-1 2.1 Description of Equipment & Supplies ................................................ 2-1 2.2 Inventory ............................................................................................. 2-1 2.3 Blood Pressure .................................................................................... 2-1 2.3.1 Blood Pressure Equipment .................................................. 2-2 2.3.2 Blood Pressure Supplies ...................................................... 2-3 2.3.3 Description of Blood Pressure Equipment and Supplies .... 2-3 2.3.4 Blood Pressure Supplies – Description ............................... 2-5 2.3 HPV Supplies .....................................................................................
    [Show full text]
  • Bouncebacks Crit Care CHAPTER 11 – 63 Yo Man Fall
    BOUNCEBACKS! AVOID SERIOUS MISTAKES IN THE ED 31 Cases, 482 pages 10 Cases, 320 pages 28 Cases, 410 pages 30 Cases, 663 pages Praise for Bouncebacks! Bouncebacks! is a collection of cases that all emergency physicians dread, or should. - Academic Emergency Medicine, 2007 I would recommend this book for both residents and practicing physicians. For residency programs it can serve as an adjunct to case discussions and as a model for morbidity and mortality conference. For practicing emergency physicians it can provide excellent continuing education as an engaging and occasionally terrifying reminder of the high risk cases that masquerade as benign problems. - Annals of Emergency Medicine, 2007 Bouncebacks! Medical and Legal takes the reader along an enlightening educational journey beginning with deceptively well patient visits, followed by the feared patient “bouncebacks” with their unexpected bad outcomes, and ultimately revealing the courtroom proceedings that arose from the encounters… Bouncebacks! Medical and Legal should be mandatory reading for all involved in emergency medicine. - Annals of Emergency Medicine, 2012 Bouncebacks! Medical and Legal is an insightful and pragmatic analysis of emergency department malpractice litigation. The authors provide the reader with interpretive perspectives from all sides of patient care—the holistic view ultimately evaluated by a jury. The lessons presented are a good reminder for any practicing physician. - JAMA, 2012 After reading these 28 cases, I feel that I am less likely to miss similar patients in the ED. I highly recommend this as a book for anyone who cares for pediatric patients, and as a great teaching tool for residents and fellows. - The Journal of Emergency Medicine, 2016 The Bouncebacks! series is available from Anadem, Inc.
    [Show full text]
  • Pregnancy and Cardiovascular Disease
    Pregnancy and Cardiovascular Disease Cindy M. Martin, M.D. Co-Director, Adult Congenital and Cardiovascular Genetics Center No Disclosures Objectives • Discuss the hemodynamic changes during pregnancy • Define the low, medium and high risk cardiac lesions as related to pregnancy • Review use of cardiovascular drugs in pregnancy Pregnancy and the Heart • 2-4% of pregnancies in women without preexisting cardiac abnormalities are complicated by maternal CV disease • In 2000, there were an estimated 1 million adult patients in the US with congenital heart disease (CHD), with the number increasing by 5% yearly • In 2005, the number of adult patients with CHD surpassed the number of children with CHD in the United States • CV and CHD disease does not always preclude pregnancy but may pose increase risk to mother and fetus Hemodynamic Changes during Pregnancy • Blood Volume – increases 40-50% • Heart rate – increases 10-15 bpm • SVR and PVR – decreases • Blood Pressure – decreases 10mmHg • Cardiac Output – increases 30-50% – Peaks at end of second trimester and plateaus until delivery • These changes are usually well tolerated Physiologic Changes in Pregnancy Hemodynamic Changes in Labor and Delivery • CO increases an additional 50% with each contraction – Uterine contraction displaces 300-500ml blood into the general circulation – Possible for the cardiac output to be 70-80% above baseline during labor and delivery • Mean arterial pressure also usually rises • Volume changes – Increased blood volume with uterine contraction – Increase venous
    [Show full text]
  • An Audio Guide to Pediatric and Adult Heart Murmurs
    Listen Up! An Audio Guide to Pediatric and Adult Heart Murmurs May 9, 2018 Dr. Michael Grattan Dr. Andrew Thain https://pollev.com/michaelgratt679 Case • You are working at an urgent care centre when a 40 year old recent immigrant from Syria presents with breathlessness. • You hear the following on cardiac auscultation: • What do you hear? • How can you describe what you hear so another practitioner will understand exactly what you mean? • What other important information will help you determine the significance of your auscultation? Objectives • In pediatric and adult patients: – To provide a general approach to cardiac auscultation – To review the most common pathologic and innocent heart murmurs • To emphasize the importance of a thorough history and physical exam (in addition to murmur description) in determining underlying etiology for heart problems Outline • A little bit of physiology and hemodynamics (we promise not too much) • Interactive pediatric and adult cases – https://pollev.com/michaelgratt679 – Get your listening ears ready! • Systolic murmurs (pathologic and innocent) • Diastolic murmurs • Continuous murmurs • Some other stuff Normal Heart Sounds Normal First & Second Sounds Splitting of 2nd heart sound Physiological : • Venous return to right is increased in inspiration – causes delayed closure of the pulmonary valve. • Simultaneously, return to left heart is reduced - premature closure of the aortic valve. • Heart sounds are unsplit when the patient holds breath at end expiration. Fixed: • No alteration in splitting with respiration. • In a patient with ASD – In expiration there is reduced pressure in the right atrium and increased pressure in the left atrium. • Blood is shunted to the right and this delays closure of the pulmonary valve in the same way as would occur in inspiration.
    [Show full text]