Here’s a **complete, concise, and high-yield summary on *Heart Disease in Pregnancy*** — covering definitions, physiology, classifications, diagnosis, management, and **20 clinical case scenarios with explanation and management**. --- ## 🫀 **HEART DISEASE IN PREGNANCY** ### 🔹 Definition: Heart disease in pregnancy refers to **any pre-existing or newly developed cardiac condition** that affects maternal or fetal health during pregnancy, labor, or puerperium. --- ## ⚙️ **Physiological Changes in Pregnancy Affecting Heart Disease** | Parameter | Change | Effect | | ---------------------------- | ------------------------------- | ---------------------- | | Blood volume | ↑ 40–50% | ↑ Preload | | Cardiac output | ↑ 30–50% (peaks at 20–24 weeks) | Strains heart | | Heart rate | ↑ 10–15 bpm | Increased workload | | Systemic vascular resistance | ↓ | May mask hypertension | | Colloid osmotic pressure | ↓ | ↑ Pulmonary edema risk | --- ## 🧩 **Types / Etiology** 1. **Congenital Heart Disease (CHD)** – 60% * ASD, VSD, PDA, Tetralogy of Fallot, Eisenmenger’s, Coarctation of aorta, Transposition of great arteries 2. **Rheumatic Heart Disease (RHD)** – 30–40% * Mainly **Mitral stenosis**, Mitral regurgitation 3. **Acquired Non-rheumatic** * Cardiomyopathy, Myocardial infarction 4. **Peripartum Cardiomyopathy** – develops last month of pregnancy or within 5 months postpartum. --- ## 🧮 **NYHA Functional Classification** | Class | Symptoms | | ----- | ----------------- | | I | No limitation | | II | Slight limitation | | III | Marked limitation | | IV | Symptoms at rest | --- ## ⚠️ **High-Risk Conditions (WHO Class IV – Pregnancy Contraindicated)** * Pulmonary hypertension (any cause) * Eisenmenger syndrome * Severe aortic stenosis * Severe LV dysfunction (EF <30%) * Marfan with aortic root >45 mm --- ## 🩺 **Clinical Features** * Dyspnea, orthopnea, fatigue, palpitations, syncope * Cyanosis, pedal edema * Murmurs (especially diastolic, loud S3/S4) * Signs of failure (rales, hepatomegaly, raised JVP) --- ## 🔍 **Investigations** * **ECG** – arrhythmias, hypertrophy * **Echocardiography** – type/severity * **Chest X-ray** (with shielding) * **BNP levels** – for heart failure * **O2 saturation, ABG** – in cyanotic heart disease --- ## 💊 **Management Principles** ### 🧠 General: * Early **cardiology + obstetric** joint management * **Avoid volume overload** * **Prevent anemia, infection, stress** ### 🧘 Antenatal: * Limit physical activity * Salt restriction * Diuretics (Frusemide if needed) * Beta-blockers (e.g., Metoprolol) * Avoid ACE inhibitors, ARBs, Warfarin (esp. 6–12 weeks) ### ⚕️ Labor: * Vaginal delivery preferred (short 2nd stage) * Epidural anesthesia (avoid sudden BP changes) * Lateral position, oxygen, avoid over-transfusion ### 🩸 Postpartum: * Risk of **heart failure peaks in first 24–48h** * Diuretics, fluid restriction * Monitor ECG and urine output closely --- ## 👶 **Fetal Risks** * Prematurity, growth restriction * Congenital heart disease (esp. if maternal CHD) * Hypoxia, acidosis, stillbirth --- ## 💀 **Complications** * Cardiac failure * Arrhythmia * Thromboembolism * Infective endocarditis * Maternal and fetal death --- ## 🧰 **Drugs in Pregnancy (Cardiac Safe Profile)** | Drug | Safe | Avoid | | ---------------------- | ---- | ----------------------------- | | Diuretics (Furosemide) | ✅ | Spironolactone | | Beta-blockers | ✅ | Atenolol (growth retardation) | | Heparin | ✅ | Warfarin (teratogenic early) | | Digoxin | ✅ | — | | ACE inhibitors | ❌ | Contraindicated | --- ## 🩻 **Special Cardiac Lesions** ### 🔸 **Mitral Stenosis** * Most common in pregnancy * Pulmonary edema risk ↑ * Management: Diuretics, beta-blockers, balloon valvotomy if severe ### 🔸 **Atrial Septal Defect** * Usually well tolerated unless pulmonary hypertension develops ### 🔸 **Eisenmenger Syndrome** * Maternal mortality 50–60% * **Pregnancy contraindicated** ### 🔸 **Peripartum Cardiomyopathy** * Heart failure near term/postpartum * Treat as heart failure; avoid subsequent pregnancy --- # 🧪 **Examinations** * **General**: Pallor, cyanosis, clubbing, edema, JVP * **Cardiac**: Murmurs, thrills, heart sounds, apex beat * **Obstetric**: Fetal growth, uterine size, fetal heart sound * **Investigations**: ECG, Echo, Chest X-ray, BNP, CBC --- # ⚡ **20 Case Scenarios with Explanation & Management** | No. | Case Scenario | Explanation | Management | | ------ | ----------------------------------------------------------------- | ------------------------------------------- | ------------------------------------------------------------------------ | | **1** | 26y G2P1 with breathlessness at 28 wks, diastolic murmur, loud S1 | Mitral stenosis | Restrict salt, beta-blocker, diuretics, balloon valvotomy if NYHA III–IV | | **2** | 22y with congenital VSD, no cyanosis | Small VSD tolerated | Routine care, avoid infection | | **3** | 30y with cyanosis, clubbing, pulmonary HTN | Eisenmenger’s | Termination advised; avoid pregnancy | | **4** | 28y with RHD, mitral regurgitation, mild symptoms | MR usually well tolerated | Regular follow-up, endocarditis prophylaxis | | **5** | 35y with palpitations, irregular pulse | Atrial fibrillation | Digoxin, beta-blocker, heparin | | **6** | 32y with sudden dyspnea postpartum | Peripartum cardiomyopathy | Diuretics, digoxin, anticoagulants, avoid next pregnancy | | **7** | 20y primigravida with syncope, ejection murmur | Aortic stenosis | Avoid exertion, C-section if severe | | **8** | 27y with Marfan’s, aortic root 48mm | High rupture risk | Termination advised | | **9** | 29y with previous valve replacement (mechanical) | On warfarin | Switch to heparin in 6–12wks; restart after delivery | | **10** | 26y with dyspnea at 34w, fine crepts | Pulmonary edema in MS | Oxygen, furosemide IV, morphine, digitalization | | **11** | 28y, ASD, NYHA I | Usually tolerated | Routine antenatal, antibiotic prophylaxis | | **12** | 30y, postpartum day 2, orthopnea | Cardiac decompensation | Oxygen, diuretics, rest | | **13** | 25y, TOF repaired in childhood | Good tolerance | Routine antenatal | | **14** | 32y, palpitation and fatigue, new murmur | Endocarditis | Antibiotics based on culture | | **15** | 29y, history of RHD, presents with fever | Subacute bacterial endocarditis | IV penicillin + gentamicin | | **16** | 35y, hypertrophic cardiomyopathy | Risk arrhythmia | Beta-blocker, avoid dehydration | | **17** | 28y, palpitations, hyperthyroidism | Sinus tachycardia, high output | Control thyroid first | | **18** | 24y, multiple pregnancy, SOB | Exaggerated volume overload | Monitor heart closely | | **19** | 29y, chest pain, ECG: MI | Pregnancy-related MI | Antiplatelets, heparin, avoid ACEI | | **20** | 26y, postpartum collapse | Amniotic fluid embolism vs. cardiac failure | Supportive care, ICU management | --- ### 🏁 **Summary Table** | Aspect | Summary | | ---------------- | --------------------------------------------- | | Commonest cause | Rheumatic Mitral stenosis | | Risk peak | 28–32 weeks & immediate postpartum | | Mode of delivery | Vaginal preferred unless obstetric indication | | Drugs to avoid | ACEI, ARB, warfarin (1st trimester) | | Postpartum care | Monitor 48–72h, diuretics, restrict fluids | --- **Tags:** `heart disease in pregnancy, mitral stenosis, rheumatic heart disease, congenital heart disease, Eisenmenger, peripartum cardiomyopathy, cardiac failure, NYHA classification, cardiac examination in pregnancy, pregnancy contraindicated heart disease, obstetric management, cardiology obstetrics, maternal mortality, fetal risk, cardiac drugs in pregnancy` --- Would you like me to make this into a **stylish responsive HTML page (medical notes format)** with collapsible sections and highlighted case scenarios (for your medical website)?