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Women and cardiovascular disease(CVD):
What do we need to know?
Dr.Udaya RalapanawaMBBS(SL),MD(Col),MRCP(UK),FRCP(London)
Consultant PhysicianSenior Lecture In Medicine
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Are women more complicated than men?
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Hormones in Men vs. Women
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Cardiovascular disease is mainly a disease of old
men
Myth
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Myths vs Facts
Myths Facts
Men are more likely to have heart disease
Heart disease is the #1 killer of men and women; 50,000 more women than men die of heart disease every year
Cancer is a bigger threat than heart disease
Nearly twice as many US women die from heart disease and stroke than from all cancers combined
Doctors are aware of women’s risk for heart disease and act accordingly
Undertreatment and underdiagnosis of heart disease in women contributes to excess mortality in women
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Gender Bias in the Treatment of Women
“… The community has viewed women’s health almost with a ‘bikini’ approach, looking essentially at the breast and reproductive system, and almost ignoring the rest of the woman as part of women’s health ….”
Nanette Wenger, MDChief of Cardiology, Grady Hospital Professor of Medicine, Emory UniversityAtlanta, Georgia
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Magnitude of the Problem
2.5 million women per year in the US are hospitalized with cardiovascular disease (CVD)
Deaths from CVD = 500,000/yr
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Magnitude of the Problem
Leading cause of death in US women: CAD
1990: US Congress directed the National Institutes of Health that women be included in clinical trials and that gender differences be evaluated
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Statistics for Women
1 in 5 women has some form of CVD
38% of women who have a heart attack die within 1 year
40% of coronary events in women are fatal› Most occur without prior warning
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CVD Mortality Trends (1979-1999)
American Heart Association. 2002 Heart and Stroke Statistical Update. 2001
Death
s in
Th
ou
san
ds
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Gender Differences in Heart Attack Symptoms
Typical in both sexes Pain, pressure, squeezing,
or stabbing pain in the chest
Pain radiating to neck, shoulder, back, arm, or jaw
Pounding heart, change in rhythm
Difficulty breathing Heartburn, nausea,
vomiting, abdominal pain Cold sweats or clammy
skin Dizziness
Typical in women Milder symptoms (without
chest pain) Sudden onset of
weakness, shortness of breath, fatigue, body aches, or overall feeling of illness (without chest pain)
Unusual feeling or mild discomfort in the back, chest, arm, neck, or jaw (without chest pain)
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Prevalence of CVD in the US
5.510.4
17.4
34.2
51.0
65.270.7
4.60 4.20
13.60
28.90
79.00
48.10
65.20
010203040
5060708090
20-24 25-34 35-44 45-54 55-64 65-74 75+Ages
Pe
rce
nt
of
Po
pu
lati
on
Males
Females
American Heart Association. 2002 Heart and Stroke Statistical Update. 2001
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Although less frequent, CVD occurs in young women
More than35,000 women under the
age of 65 die annually in the US
from CVD
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Women’s Perceptions of Heart Disease
72% of young women (ages 25-40) still consider cancer to be the greatest threat to women’s health
Some women know about the risks of heart disease but do not hear it from their own doctors and do not “personalize” it
Robinson A. Circulation. 2001
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Women’s Perceptions of Heart Disease
65% of women recognize that symptoms may be “atypical” but do not know classic symptoms
Most women learn about coronary artery disease (CAD) from magazines and the Web—not from their own physicians!
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Health Threats to Women: Perception vs Reality
1. Gallup survey. 1995 2. American Heart Association. Heart & Stroke Facts. 1996 Statistical Supplement
Perceived health threats
55%
40%
22%
2%
Cance
r
Breas
t can
cer
Heart
dise
ase
Heart
atta
ck
Leading causes of death in women
3%4%4%
24%
46%
1 2
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Death From Breast Cancer or Heart Disease in Women in the US
US Vital Statistics, 1990
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Women don’t need to worry about cardiovascular disease before
menopause
Myth
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Relationship between early menopause and accelerated CVD?
Increasing Risk of CVD
Minimal or no CVD Risk
Menopause
Traditional Paradigm:
Increasing Risk of CVD
Menopause
Alternative Paradigm:
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Coronary heart disease progresses over decades
Decades of time
Smoking, High Blood Pressure, Elevated
Cholesterol, Diabetes, Inactivity, Obesity
Age, Heredity
The reality: Being premenopausal probably does not protect you from cardiovascular
disease and you should be vigilant at all ages …
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Estrogen
Critical to reproductive function in men & women
Most produced by ovaries
Some arises from fat, liver, breasts, adrenals
Complex physiologic effects
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Is There a Role for HRT?
Secondary prevention› 1998: HERS
4 years of treatment with conjugated estrogen plus medroxyprogesterone acetate
No reduction in the risk of MI and coronary death in women with established CAD
HERS trial. JAMA. 1998.
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Is There a Role for HRT?
Secondary prevention› 3/2000: Estrogen Replacement and Atherosclerosis trial
(ERA) 309 postmenopausal women with CAD Placebo vs conjugated estrogen (.625 mg/day) vs
conjugated estrogen (.625 mg/day) with medroxyprogesterone acetate (2.5 mg/day)
Angiographic analysis of the diameter of the coronary arteries at the start of the study and 3 years later
ERA trial results at follow-up angiography› The progression of coronary atherosclerosis was
unchanged in the women randomized to either of the estrogen groups
ERA trial. J Am Coll Cardiol. 2001
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Women’s Health Initiative
16,608 Post-menopausal women aged 50-79 with an intact uterus
Estrogen +Progesterone
Placebo
Study stopped after mean
follow-up of 5.6 years
Hormonal replacement associated with:• Increased heart disease (29% ↑)• Increased stroke (41% ↑)• Increased blood clots • Increased breast cancer (26% ↑)• Reduced colon cancer• Reduced hip fracture
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RCOG and the hormone replacement therapy (HRT)
RCOG UPDATE (11 June 2013): The British Menopause Society (BMS) and Women’s Health Concern recently published a literature review
In summary, their key recommendations are: The decision whether to use HRT should be made
by each woman having been given sufficient information by her healthcare professional, including information about complementary therapies and lifestyle and dietary changes.
HRT dosage, regimen and duration should be individualised, with an annual evaluation of the pros and cons
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RCOG and the hormone replacement therapy (HRT)
Arbitrary limits should not be placed on the duration of usage of HRT; if symptoms persist, the benefits of hormone therapy usually outweigh the risks.
HRT prescribed before the age of 60 has a favourable benefit/risk profile.
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RCOG and the hormone replacement therapy (HRT)
It is imperative that women with Premature Ovarian Insufficiency (POI) are encouraged to use HRT at least until the average age of the menopause.
If HRT is to be used in women over 60 years of age, lower doses should be started, preferably with a transdermal route of administration.
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Coronary Disease Mortality and Diabetes in Women
33
Sources: Krolewski 1991, National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III) 2002.
0
10
20
30
40
50
60
0 - 3 4 - 7 8 - 11 12 - 15 16 - 19 20 - 23
Duration of Follow-up (yrs)
Women withDiabetes
Women withoutDiabetes
Mortality Rate per 1,000
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Diabetes Creates Higher Risks for Women With CAD
65% of diabetics die from heart disease or stroke
4.2 million American women have diabetes › Diabetes increases CAD risk 3-fold to 7-fold in women
vs 2-fold to 3-fold in men› Diabetes doubles the risk of second heart attack in
women but not in men
American Heart AssociationCenters for Disease Control and Prevention
Manson JE, et al. Prevention of Myocardial Infarction. 1996
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Diabetes: Powerful Risk Factor for CAD in Women
Framingham Heart Study › Women with diabetes mellitus had relative
risk of 5.4% for CAD vs women without diabetes
› Men with diabetes had relative risk of 2.4% Nurses’ Health Study
› Relative risk of 6.3% for total cardiovascular (CV) mortality
› Even if women had diabetes for <4 years, their risk of CAD was significantly elevated
Kannel W. Am Heart J. 1987Manson J, et al. Arch Intern Med. 1991
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Clinical Identification of the Metabolic Syndrome
Abdominal obesity› Men >88 cm (>40 in)› Women >80 cm (>35 in)
Triglycerides (TG) >150 mg/dL HDL cholesterol
› Women <50 mg/dL› Men <40 mg/dL
Blood pressure >130/>85 mm Hg Fasting glucose >100 mg/dL
National Heart, Lung, and Blood Institute
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Impact of Triglyceride Levels on Relative Risk of CAD
Framingham Heart Study
0.55
1
1.4 1.45
1.8 1.85
2.2 2.15
0.650.8 0.75
1
1.21.3 1.25 1.25
0
0.5
1
1.5
2
2.5
50 100 150 200 250 300 350 400
Rel
ativ
e R
isk
(x-f
old)
Women
Men
Castelli WP. Can J Cardiol. 1988
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Smoking
Single most preventable cause of death in US
Smoking by women causes 150% more deaths from heart disease than lung cancer
Women who smoke are 2-6 times more likely to suffer a heart attack
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39
Smoking
Nurses’ Health Study: Even a few cigarettes a day correlated with a greater risk of CVD or fatal MI
About one-quarter of all women smoke; prevalence greatest among postmenopausal women
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Smoking
Younger women who smoke probably cancel out any premenopausal protection
Women who take oral contraceptives and smoke are more likely to have an MI or stroke than those who take the pill but don’t smoke
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Stress
Puts a woman at greater risk for CVD and poorer outcomes
Depression also may increase risk or defer her from seeking medical help
Consider screening women with CAD for depression and refer for treatment as needed
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Physical Inactivity
Lack of exercise is a proven risk factor for heart disease› A lack of regular physical exercise is a growing
epidemic all over the world. “We seem to eat much more than what we burn”
Heart disease is twice as likely to develop in inactive people than in those who are more active
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Physical Inactivity
Physical activity helps maintain weight, blood pressure, and diabetes
Women should exercise to increase heart rate for 20-30 minutes a day, 3-5 times per week
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Women in Clinical Trials
Women are underrepresented in cardiovascular (CV) trials› Evidence-based CV medicine biased
toward men Food and Drug Administration/National
Institutes of Health mandate: 50% enrollment of women
Women need to be empowered to enroll in clinical trials for heart disease › Breast-cancer awareness is a good
example
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Coronary Microvascular Disease
Coronary MVD is heart disease that affects the heart's tiny arteries. This disease is also called cardiac syndrome X or nonobstructive CHD. In coronary MVD, the walls of the heart's tiny arteries are damaged or diseased.
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Coronary Microvascular Disease
Women are more likely than men to have coronary MVD. Many researchers think that a drop in estrogen levels during menopause combined with other heart disease risk factors causes coronary MVD.
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Coronary Microvascular Disease
Although death rates from heart disease have dropped in the last 30 years, they haven't dropped as much in women as in men. This may be the result of coronary MVD.
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PET Case Study: Patient FF
Stress Rest
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PET Case Study: Patient FFIschemia of Lateral Wall
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Treatment differences
Thrombolysis – equally effective – Cerebral hemorrhage risk is more
Low rates of coronary angiography in women
Under referral for revascularization procedures
CABG - > operative mortality 1.9 % v/s 4.6% Restenosis after PTCA, or CABG occlusion
rates are more for women - ? Smaller lumen sizes
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Rehabilitation
Women have higher hospital readmission rates for unstable angina, reinfarction, heart failure, ventricular tachycardia, and ventricular fibrillation.
Main goals: Reduce risk and restore functional capacity
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Cardiac Diseases in Pregnancy
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Cardio-circulatory changes during normal pregnancy
parameterChanges at various times (weeks)
5 12 20 24 32 38
HR ↑ ↑↑↑ ↑↑↑ ↑↑↑ ↑↑↑↑ ↑↑↑↑
SBP ↔ ↓ ↓ ↔ ↑ ↑↑
DBP ↔ ↓ ↓↓ ↓ ↔ ↑↑
SV↑
↑↑↑↑↑ ↑↑↑↑↑↑ ↑↑↑↑↑↑ ↑↑↑↑↑↑↑↑↑↑
CO ↑↑ ↑↑↑↑↑↑ ↑↑↑↑↑↑↑ ↑↑↑↑↑↑↑ ↑↑↑↑↑↑↑ ↑↑↑↑↑↑↑
SVR ↓↓ ↓↓↓↓↓ ↓↓↓↓↓↓ ↓↓↓↓↓↓ ↓↓↓↓↓↓ ↓↓↓↓↓
LV EF ↑ ↑↑ ↑↑ ↑↑ ↑ ↑
↑ ≤ 5%; ↑↑ 6-10%; ↑↑↑ 11-15%; ↑↑↑↑ 16-20%; ↑↑↑↑↑ 21-30%; ↑↑↑↑↑↑ > 30%, ↑↑↑↑↑↑↑ > 40%.
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Changes in plasma volume, erythrocyte volume, and hematocrit during pregnancy
Plasma volume ↑ 50% (20-100%).
“Physiologic anemia of pregnancy”.
Estrogen-mediated stimulation of the RAS.
Role of other hormones› deoxycorticosterone,
prostaglandins, estrogen, prolactin, placental lactogen, GH, ACTH, ANP
From Pitkin RM, Nutritional support in obstetrics and gynecology. Clin Obstet Gynecol 1976;19:489.
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Many Women Develop Conditions During the Reproductive Years that Contribute to CVD Risk in Later Life
55
CVD Mortality
per 100,000Women
Source: Adapted from “CVD Prevention and the Primary Care Partnership”, Deborah Ehrenthal, MD, FACP
HTN – HypertensionGDM – Gestational DiabetesPCOS – Polycystic Ovary Syndrome
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Hemodynamic changes during labor and delivery
Anxiety, pain, uterine contraction. Oxygen consumption ↑ threefold. ↑ CO during labor (↑ SV and ↑ HR). ↑ SBP & DBP (especially 2nd stage)
Those changes are influenced by the form of anesthesia and analgesia.
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Hemodynamic changes post partum
Blood shifting “auto-transfusion” (from the contracting uterus to
the systemic circulation)
Increase in effective blood volume
Substantial increase in LV filling pressure, SV and CO
Clinical deterioration
Blood loss during
delivery
-
• HR and CO return to pre-labor values within 1 hour. MAP and SV within 24 hours.• Hemodynamic adaptation persists post partum and return to pre-pregnancy values within 12-24 weeks after delivery.
Increase in venous return(relief of caval compression)
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HistoryExercise capacity
Current or past evidence of HFAssociated arrhythmias
Physical exam
Cardiac HemodynamicsSeverity of heart disease, PA pressures
Echo, MRI.
Exercise testingUseful if the history is inadequate to allow assessment of functional capacity
During pregnancyEvaluate once each trimester and whenever there is change in symptoms
Multidisciplinary approach, Fetal Echo
Befo
re c
on
cep
tion
Reimold, S. C. et al. N Engl J Med 2003;349:52-59
During Labor & DeliveryMultidisciplinary approach (Obstetrician, Cardiologist, Anesthesiologist)
Tailor management to specific needs
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High-risk pregnancy
Pulmonary HTN and Eisenmenger’s syndrome.
Symptomatic obstructive cardiac lesions:› AS, PS, uncorrected coarctation of the aorta.
Marfan’s Syndrome with dilated aortic root.
Systemic ventricular dysfunction (LVEF < 40%).
Severe cyanotic heart disease. Patients with prosthetic valves. Significant uncorrected CHD.
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Contraindications to Pregnancy
Lesion Maternal death rate (%)
• Severe Pulmonary Hypertension 50
• Severe obstructive lesions: AS,PS, HOCM, Coarctation.
17
• Systemic Ventricular Dysfunction, NYHA class III or IV
7
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Pregnancy Outcomes
The prevalence of clinically significant maternal heart disease is low (<1%)1.
Its presence increases the risk of adverse maternal, fetal, and neonatal outcomes2.
1. Siu SC, Sermer M, Colman JM, et al. Prospective multicenter study of pregnancy outcomes in women with heart disease. Circulation 2001;104:515-521.
2. Siu SC, Colman JM, Sorensen S, et al. Adverse neonatal and cardiac outcomes are more common in pregnant women with cardiac disease. Circulation 2002;105:2179-2184.
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Preeclampsia
Preeclampsia (pre-e-KLAMP-se-ah) is a condition that develops during pregnancy. The two main signs of preeclampsia are a rise in blood pressure and excess protein in the urine.
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Preeclampsia
These signs usually occur during the second half of pregnancy and go away after delivery. However, your risk of developing high blood pressure later in life increases after having preeclampsia.
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Preeclampsia
Preeclampsia also is linked to an increased lifetime risk of heart disease, including CHD, heart attack, and heart failure. (Likewise, having heart disease risk factors, such as diabetes or obesity, increases your risk for preeclampsia.)
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Preeclampsia
If you had preeclampsia during pregnancy, you're twice as likely to develop heart disease as women who haven't had the condition. You're also more likely to develop heart disease earlier in life.
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Aortic stenosis Severe AS is poorly tolerated.
› AVA < 0.7 cm2, Mean PG > 50 mmHg.› Mortality up to 17%.
Symptomatic patients or Mean gradient > 50 mmHg
→ Delay conception until after surgical or interventional correction.
Consider balloon valvuloplasty, Ross procedure, tissue valve (no need for anticoagulation).
Symptomatic patients before end of 1st trimester
Terminate pregnancy. Β-Blockade, Bed rest. Palliative aortic balloon valvuloplasty
or AVR. Early Delivery.
Reimold, S. C. et al. N Engl J Med 2003;349:52-59
Hameed A, et al. The effects of valvular heart disease on maternal and fetal outcome of pregnancy. J Am Coll Cardiol 2001;37:893-9.
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Prosthetic valves and pregnancy
Anticoagulation
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Warfarin vs. HeparinWarfarin
Crosses the placenta. ↑early abortion,
prematurity, and embryopathy when used in 1st trimester (6th–12th weeks).
CNS & Eye abnormalities (2nd & 3rd trimester).
Bleeding in the fetus (especially at delivery)› Should be stopped
before delivery.
Heparin
Does not cross the placenta
No teratogenicity No fetal bleeding
Twice daily SC injection Risk of osteoporosis
› <2% symptomatic fractures.› but 30% decrease in bone
density. Risk for thrombocytopenia ↑↑ Risk of thrombosis
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Endocarditis prophylaxis
Antibiotic prophylaxis at the time of delivery is not recommended for patients expected to have uncomplicated vaginal delivery or cesarian section, unless clinically overt infection is present 1,2
Patients at high risk for endocarditis may receive antibiotics at the discretion of their physician2:› Those with prosthetic heart valves.› Previous IE.
1 Sugrue D, Troy P, McDonald D. Antibiotic prophylaxis against infective endocarditis after normal delivery -- is it necessary? Br Heart J 1980;44:499-502. 2 Dajani AS, Taubert KA, Wilson W, et al. Prevention of bacterial endocarditis: recommendations by the American Heart Association. JAMA
1997;277:1794-1801.
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Peuperal Cardiomyopathy
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Pregnancy and CHDConclusions
Most women with heart disease can have a pregnancy proper care.
Pre-pregnancy evaluation mandatory.
High-risk cases benefit from combined high-risk OB and cardiac care in the same center.
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THANK YOU