Ebook Manual of cardiac diagnosis Part 1 - Pdf 42

Prelims.indd 1

Manual of

Cardiac Diagnosis

11-02-2014 13:37:07


Prelims.indd 2

11-02-2014 13:37:07


Prelims.indd 3

Manual of

Cardiac Diagnosis

Editors
Kanu Chatterjee 

MBBS

Clinical Professor of Medicine
The Carver College of Medicine
University of Iowa
United States of America
Emeritus Professor of Medicine
University of California, San Francisco

Jaypee-Highlights Medical Publishers Inc
City of Knowledge, Bld. 237, Clayton
Panama City, Panama
Phone: +1 507-301-0496
Fax: +1 507-301-0499
Email:

Jaypee Medical Inc
The Bourse
111 South Independence Mall East
Suite 835, Philadelphia, PA 19106, USA
Phone: +1 267-519-9789
Email:

Jaypee Brothers Medical Publishers (P) Ltd
17/1-B Babar Road, Block-B, Shaymali
Mohammadpur, Dhaka-1207
Bangladesh
Mobile: +08801912003485
Email:

Jaypee Brothers Medical Publishers (P) Ltd
Bhotahity, Kathmandu, Nepal
Phone: +977-9741283608
Email:
Website: www.jaypeebrothers.com
Website: www.jaypeedigital.com
© 2014, Jaypee Brothers Medical Publishers
The views and opinions expressed in this book are solely those of the original
contributor(s)/author(s) and do not necessarily represent those of editor(s) of the book.


Contributors
Abhimanyu (Manu)
Uberoi  MD

Department of Cardiology
The Stanford School of Medicine
Palo Alto, California, USA

Amardeep K Singh  MD
Department of Cardiology
University of California
San Francisco, USA

Andrew Boyle  MD

Assistant Professor of Medicine
University of California
San Francisco, USA

Brad H Thompson  MD

Professor of Medicine
The Carver College of Medicine
University of Iowa, USA

Ellen El Gordon  MD

Associate Professor of Medicine
The Carver College of Medicine


Byron F Vandenberg  MD

Cardiology Division
The Carver College of Medicine
University of Iowa, USA

Donald Brown  MD

Associate Professor of Medicine
The Carver College of Medicine
University of California
San Francisco, USA

Professor of Medicine
The Carver College of Medicine
University of Iowa, USA

Isidore C Okere  MBBS

Edwin JR van Beek  MD

Jagat Narula  MD PhD

Professor of Medicine
Chair of Clinical Radiology
Clinical Research Imaging Centre
Queen’s Medical Research Institute
University of Edinburgh, United
Kingdom

University of Iowa, USA

Department of Cardiology
The Carver College of Medicine
University of Iowa, USA

11-02-2014 13:37:07


Prelims.indd 6

vi

Manual of Cardiac Diagnosis
Mohan Brar  MD

Assistant Clinical Professor of
Medicine
The Carver College of Medicine
University of Iowa, USA

Nelson B Schiller  MD
Professor of Medicine
University of California
San Francisco, USA

Paul Lindower  MD

Professor of Medicine
The Carver College of Medicine


Teresa De Marco  MD
Professor of Medicine
University of California
San Francisco, USA

Teruyoshi Kume  MD

Stanford School of Medicine
Palo Alto, California, USA

Victor F Froelicher  MD

Professor of Medicine
The Stanford University School of
Medicine
Pala Alto, California, USA

Vijay U Rao  MD PhD

Department of Cardiology
University of California
San Francisco, USA

Wassef Karrowni  MD

Division of Cardiology
The Carver College of Medicine
University of Iowa, USA


of cardiovascular pathology. Molecular imaging, threedimensional echocardiography, and intravascular ultrasound
imaging have been introduced. Advances have occurred
in cardiovascular nuclear, computerized tomographic, and
magnetic resonance imaging.
In this book, the advancements in these diagnostic
techniques and their clinical applications in the practice of
cardiology have been extensively discussed. The role of resting
and stress electrocardiography and echocardiography has also
been elaborated upon.
The success of cardiac angiography stimulated the
continued development of selective catheter coronary
arteriography, which is the driving force in the progress and
increased effectiveness of coronary artery bypass surgery,
prosthetic valve replacement, and valve repair.
With contributions from nationally and internationally
recognized experts, an effort has been made to bring forth a
book that will serve as a useful diagnostic manual for students
and practitioners, whole-heartedly involved in the field of
cardiology.
Kanu Chatterjee

11-02-2014 13:37:07


Prelims.indd 8

11-02-2014 13:37:07


Prelims.indd 9

‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰
‰‰
‰‰
‰‰
‰‰

‰‰

137

Introduction 137
Before the Test  138
Methodology of Exercise Testing  142
During the Test  147
After the Test  160
Screening 166

6. Left Ventricle
Rakesh K Mishra, Nelson B Schiller
‰‰

96


‰‰

18

General Appearance  18
Measurement of Arterial Pressure  23
Auscultation 40
References 68

3.Plain Film Imaging of Adult Cardiovascular Disease
Brad H Thompson, Edwin JR van Beek
‰‰

1

177

Introduction 177
Systolic Function  178

11-02-2014 13:37:07


Prelims.indd 10

x

Manual of Cardiac Diagnosis
‰‰
‰‰

Introduction 233
Determinants of Left Ventricular Performance  233
Left Ventricular Pump Function  240
Heart Rate  247
Diastolic Function  249
Right Ventricular Function  251

8.Transthoracic Echocardiography
Byron F Vandenberg, Richard E Kerber
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰
‰‰

‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰

233

357

Introduction 357
History 357
Guidelines 358
Performance 358
Safety 359
Views 359
Major Clinical Applications  360
Structural Valve Assessment  366
Acute Aortic Dissection  371
Procedural Adjunct or Intraoperative Transesophageal
Echocardiography (TEE)  372

11-02-2014 13:37:07


Prelims.indd 11

Contents
11. Real-time Three-dimensional Echocardiography
Manjula V Burri, Richard E Kerber
‰‰
‰‰
‰‰
‰‰

Elias H Botvinick
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

Introduction   497
Pathophysiologic Considerations  498
Myocardial Perfusion Imaging  505
Risk Assessment of General and Specific Patient Populations  521
Positron Emission Tomography Perfusion and Metabolism   524
Imaging Myocardial Viability  526
Imaging Perfusion  530
Quantitation of Regional Coronary Flow and Flow Reserve  532
Blood Pool Imaging—Equilibrium Radionuclide Angiography
and First Pass Radionuclide Angiography  533
First Pass Curve Analysis   535
Equilibrium Gated Imaging—Erna  538
The Value of Functional Imaging  540

15.Cardiovascular Magnetic Resonance
Robert M Weiss
‰‰
‰‰

557

602

Introduction 602
Diagnosis of Epicardial Coronary Artery Stenosis  603

11-02-2014 13:37:07


Prelims.indd 12

xii

Manual of Cardiac Diagnosis
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

709

Introduction 709
History and Devices  709
Techniques 711

Introduction 750
Historical Perspective and Evolution of Catheter Designs  750
Placement of Balloon Flotation Catheters  751
Normal Pressures and Waveforms  754
Abnormal Pressures and Waveforms  758
Clinical Applications  759
Indications for Pulmonary Artery Catheterization  768
Complications 769

11-02-2014 13:37:07


Prelims.indd 13

Contents

xiii

20.Coronary Angiography and Catheter-based Coronary
Intervention776
Elaine M Demetroulis, Mohan Brar
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰
‰‰

Indications for Coronary Angiography  778
Contraindications for Coronary Angiography  780
Patient Preparation  781
Sites and Techniques of Vascular Access  782
Catheters for Coronary Angiography  786
Catheters for Bypass Grafts  788
Arterial Nomenclature and Extent Of Disease  790
Angiographic Projections  792
Normal Coronary Anatomy  793
Congenital Anomalies of the Coronary Circulation  801
General Principles for Coronary and/or Graft Cannulation  806
The Fluoroscopic Imaging System  814
Characteristics of Contrast Media  816
Contrast-Induced Renal Failure  817
Access Site Hemostasis  819
Complications of Cardiac Catheterization  821
Lesion Quantification  824
Degenerated Saphenous Vein Grafts  828
Lesion Calcification  828
Physiologic Assessment of Angiographically Indeterminate
Coronary Lesions  829
Clinical Use of Translesional Physiologic Measurements  830
Non-Atherosclerotic Coronary Artery Disease and Transplant
Vasculopathy 831
Potential Errors In Interpretation of the Coronary
Angiogram 834
Percutaneous Coronary Intervention   838
Pharmacotherapy for PCI 839
Parenteral Anticoagulant Therapy  846
Equipment for Coronary Interventions  848

–– Analysis of Symptoms

The history and physical examination are essential, not only
for the diagnosis of cardiovascular disorders but also to assess
its severity to establish a plan of its management and to assess
the prognosis. Appropriate history and physical examination are
also essential to decide what tests are necessary for a patient as
presently a plethora of tests is available for the diagnosis and
management of the same cardiac disorder. For example, for the
diagnosis of the etiology of chest pain due to coronary artery
disease, one can perform many non­invasive, semiinvasive and
invasive tests to establish or exclude the presence of obstructive
coronary artery disease. It should also be appreciated that “history
and physical examination” are cost-effective. Many tests that
are frequently performed today are unnecessary and are much
more expensive. During examination of the patient, the physician
can gain the confidence of the patient and of the family and can
establish a good rapport that is necessary for the appropriate
manage­ment of the problem of the patient. During examination,
the physician has the opportunity to demonstrate sincerity, which
facilitates to gain trust of the patient and the family.
In today’s electronic age, the patients and their relatives
are often more familiar than the physicians about the recent
developments in the diagnostic techniques and therapies. It
is thus preferable (but sometimes impossible) to have this
knowledge before examining the patient. In today’s health care
environ­ment, there are severe constraints on time available
for taking appropriate history and to do adequate physical
examination.1 Frequently, the physicians have to order the
“tests” because of time constraints even before examining

palpitations, dizziness, and syncope.

Analysis of Symptoms
Chest Pain or Discomfort
Chest pain is one of the very common presenting symptoms that
patients present to the cardiologists for their expert views for
the diagnosis of its etiology and management. The chest pain
or discomfort can be caused by various cardiac and noncardiac
causes that are summarized in Tables 1 to 4.
“Cardiac pain” may be due to myocardial ischemia or it
can be nonischemic in origin. The cardiac pain resulting from
myocardial ischemia is called “Angina pectoris”. The precise
mechanism of cardiac pain due to myocardial ischemia has not
been elucidated. It has been postulated that small nonmedullated
sympathetic nerve fibers, which are present in the epicardium
along the coronary arteries, serve as the afferent pathways for
angina pectoris. The afferent impulses enter the spinal cord in C8
 TABLE 1
Cardiac chest pain
• 
• 
• 
• 
• 
• 
• 

Coronary artery disease
 cute coronary syndromes
A

3

 TABLE 3
Cardiac causes of chest discomfort
• 
• 
• 
• 
• 

 ortic stenosis
A
Aortic regurgitations
Hypertrophic cardiomyopathy
Restrictive cardiomyopathy
Pulmonary hypertension

 TABLE 4
Noncardiac chest pain
Musculoskeletal
•  Costochondritis
•  Intercostal muscle cramps
•  Cervical disk disease
Other causes
•  Herpes zoster
•  Emotional
•  Chest wall tumor
•  Disorders of breast

to T4 segments and are transmitted to the sympathetic ganglia of


4

Manual of Cardiac Diagnosis

likelihood ratio is 0.2:0.3.2 When chest pain is much localized
and can be indicated by one or two finger tips, it is unlikely
to be angina pectoris.
The radiation of angina pain may be to one or both shoulders,
one or both arms and hands, one or both sides of the neck,
lower jaw and interscapular area. The radiation can also occur
to armpits, epigastrium, and subcostal areas. The radiation is
usually from the center to the periphery (centri­petal) and rarely
from the periphery to center (centrifugal). The radiation to one
or both shoulders is associated with the likelihood ratios of
2.3:4.7.2
Patient’s gestures during describing the chest discomfort
have been thought to be useful in the diagnosis of its etiology.
The prevalences, specificities, and positive predictive values of
the Levine sign, the palm sign, the arm sign and the pointing
sign (Figs 1A to D) have been assessed in a prospective obser­
vational study.3 The prevalence of the Levine, palm, arm and
pointing signs was 11%, 35%, 16% and 4%, respectively. The
specificities of Levine sign and arm sign were 78% and 86%,
respectively, but the positive predictive values were only 50%
and 55%, respectively. The pointing sign had a specificity of
98% for nonischemic chest discomfort.
The intensity of angina increases slowly and reaches its
peak in minutes, not instantaneously. Similarly, it is relieved
gradually, not abruptly. Analysis of the duration of chest

The effort angina is also relieved by sublingual nitroglycerin.
The time for relief after using nitroglycerin sublingually is
not instantaneous. It takes a few seconds (usually 30 seconds
or longer). It should be appreciated that chest pain due to
esophageal spasm is also relieved by nitroglycerin.
Exposure to cold weather precipitates angina more easily in
patients with classic angina. Similarly, carrying heavy objects
and heavy meals are also frequent precipitating factors. The
character, location and radiation of chest discomfort are similar
in the different clinical subsets of angina. However, some
distinctive features can be recognized in various subsets.
In patients with vasospastic angina, angina occurs at rest
and usually not during exercise. The duration is variable. It
tends to have cyclic phenomenon, and in the individual patient,
it tends to occur more or less at the same time.
In patients with acute coronary syndromes, the duration is
usually longer. In patients with ST segment elevation myocardial
infarction (STEMI), the relief of chest pain may not occur until
reperfusion therapy is established.
The atypical presentations frequently called “anginal
equivalents” are dyspnea, indigestion and belching, and
dizziness and syncope without chest pain. The atypical
presentations are more common in diabetics, women, and the
elderly. A few clinical features of angina are summarized in

08-02-2014 17:31:53


Ch-1.indd 6


•  Usually retrosternal, can be epigastric, interscapular
Localization
•  Usually diffuse, difficult to localize
•  When is very localized (point sign)—unlikely to be angina
Quality
•  Pressure, heaviness, squeezing, indigestion
Radiation
•  One or both arms, upper back, neck, epigastrium, shoulder
•  Lower jaw (upper jaw, head, lower back, lower abdomen or lower
extremities radiation is not feature of angina )
Duration
•  Usually 1–10 minutes (not a few seconds or hours)
Precipitating factors
•  Physical activity, emotional stress, sexual intercourse
Aggravating factors
•  Cold weather, heavy meals
Relieving factors
•  Cessation of activity, nitroglycerin (if relief is instantaneous, it is
unlikely to be angina)
Associated symptoms
•  Usually none, occasionally dyspnea

08-02-2014 17:31:53


Ch-1.indd 7

History

7

•  Deep, may be similar to acute coronary syndromes
Associated symptoms
•  Tachypnea and dyspnea
Acute aortic dissection
Location
•  Chest, back
Quality
•  Shearing, tearing
Onset
•  Instantaneous
Radiation
•  Downwards along the spine

or Specific Activity Scale6 (Table 9). The CCS functional
classification is most frequently used to assess the severity of
angina and has been proven to be useful to assess its prognosis.7
The Specific Activity Scale, which is a more quantitative assess­
ment of the severity of angina, is not used in the clinical trials.

08-02-2014 17:31:53


Ch-1.indd 8

8

Manual of Cardiac Diagnosis
 TABLE 8
Canadian Cardiovascular Society (CCS) functional classification
Class I

•  Patients can perform to completion any activity requiring 7 metabolic equivalents
Class III
•  Patients can perform to completion any activity requiring >2 metabolic equivalents (e.g. shower without stopping, strip and make
bed, clean windows, walk 2.5 mph, bowl, play golf, dress without
stopping), but cannot and do not perform to completion any activities
requiring >5 metabolic equivalents
Class IV 
•  Patients cannot or do not perform to completion activities requiring
>2 metabolic equivalents. Cannot carry out activities listed above
(Specific Activity Scale Class III)

In patients with suspected or documented coronary artery
disease, inquiries should be made about the risk factors.
The modifiable and nonmodifiable risk factors for atherosclerotic
coronary artery diseases are summarized in Table 10.

08-02-2014 17:31:53


Ch-1.indd 9

History

9

 TABLE 10
Cardiac and pulmonary causes of dyspnea: Differential diagnosis

defined as “labored” breathing. The precise mechanism of dyspnea
has not been established. It has been suggested that activation of
the mechanoreceptors in the lungs, pulmonary artery and heart
and activation of the chemoreceptors are involved in inducing
dyspnea. Dyspnea can occur during exertion (exertional), during
recumbency (orthopnea), or even with standing (platypnea).
There are both cardiac and noncardiac (Table 10) causes of
dyspnea. Pulmonary disease, such as chronic obstructive lung
disease, is one of the common non­cardiac causes of dyspnea.
Many patients have both cardiac and pulmonary disease. It
is not uncommon in clinical practice to encounter patients
who have coro­nary artery disease and chronic obstructive
pulmonary disease. In such patients, to determine the cause
of dyspnea, appropriate history and physical examination
are essential. To distinguish between cardiac and noncardiac
dyspnea, the measurements of serum B-type Natriuretic
Peptide (BNP) or N-Terminal ProBNP (NTBNP) is helpful. In
non­cardiac dyspnea, the natriuretic peptide levels are normal,
and in patients with heart failure, they are substantially
elevated.

08-02-2014 17:31:53


Ch-1.indd 10

10

Manual of Cardiac Diagnosis


alternating periods of apnea and hyperpnea. During hyperpneic
phases, there is a progressive decrease in PCO2 with increased
pH, which inhibits the respiratory drive; during apneic phase,
CO2 accumulates with an increase in respiratory acidosis, and
the respiratory center is stimulated and breathing is initiated.
It appears that chemoreceptors-mediated stimulation of the
respiratory centers is blunted in patients with Cheyne–Stokes
respiration. Patients feel shortness of breath during the hyperpneic
phase. Central, obstructive, and mixed types of sleep apnea are
observed in patients with heart failure. The hemodynamic causes
of sleep-disordered breathing in heart failure have not been
clearly elucidated. Initially, the Cheyne–Stokes respiration was
thought to be due to low cardiac output;8 however, there does
not appear to be a good correlation between any hemodynamic
changes of systolic heart failure and Cheyne–Stokes respiration.
History of sleep-disordered breathing should be inquired, as it is
associated with worsening heart failure, pulmonary hypertension,
and increased risks of arrhythmias, and sudden cardiac death.

08-02-2014 17:31:53


Ch-1.indd 11

History

11

Wheezing due to constriction of the bronchial smooth
muscles associated with dyspnea does not always imply

present in both conditions. A plain chest X-ray may be useful
to establish the diagnosis. In patients with pulmonary embolism,
the chest X-ray is clear and does not demonstrate radiologic
evidences of pulmonary venous hypertension. In patients with
hemodynamic pulmo­nary edema, prominent upper lobe vessels,
perihilar haziness, and Kerley lines and frank pulmonary edema
may be present (Fig. 3).
A careful cardiovascular examination may also reveal the
etiology of dyspnea. For example, evidence of valvular and
myocardial heart diseases suggests cardiac cause of dyspnea
(Table 11). The presence of S3 gallop usually indicates increased
left ventricular diastolic pressures except in young people and
patients with chronic primary mitral regurgitation. In patients
with heart failure, presence of S3 is also associated with the
increased levels of B-type natriuretic peptides. The presence
of characteristic physical findings of significant valvular heart

08-02-2014 17:31:53


Ch-1.indd 12

12

Manual of Cardiac Diagnosis

FIGURE 3: A plain chest X-ray of a patient with acute severe mitral
regurgitation showing florid hemodynamic pulmonary edema
 TABLE 11
Diagnosis of causes of cardiac dyspnea



Nhờ tải bản gốc

Tài liệu, ebook tham khảo khác

Music ♫

Copyright: Tài liệu đại học © DMCA.com Protection Status