Home | | Medicine Study Notes | Mitral Stenosis

Chapter: Medicine Study Notes : Cardiovascular

Mitral Stenosis

Causes: rheumatic heart disease, infection (less common than aortic) ® fusion of the leaflets

Mitral Stenosis


·        Causes: rheumatic heart disease, infection (less common than aortic) ® fusion of the leaflets


·        Symptoms: dyspnoea, PND, haemoptysis, arrhythmia (® palpitations), RH signs if pulmonary hypertension


·        Signs:

o  Loud S1, opening snap after S2 (loudest at apex)


o  Long, loud diastolic murmur accentuated just before S1 (atrial systole – not if AF). Loudest with bell at apex and left lateral side

o  Pulmonary oedema is worse than in other causes (eg mitral regurgitation)


o  If pulmonary hypertension then low cardiac output failure® thin patient, peripheral cyanosis, cool extremities, small pulse volume. Dilated veins and cyanosis of cheeks = mitral facies


·        Leads to:

o  LA enlargement:


§  ® pulmonary hypertension (> 7.5 mmHg/L/min) and pulmonary oedema

§  ® AF

o  Bronchitis

·        Investigations:


o  ECG: broad P wave, RV hypertrophy (NB – LV enlargement is not typical – key differential with mitral regurgitation)

o  X-ray: LA enlargement, RH enlargement

o  Echo: good at imaging the mitral valve

·        Differential: Left atrial myxoma (much less common)

·        Treatment:

o  Prophylaxis for RF (till 20) and infective endocarditis (eg dental work)

o  Surgery: valvotomy, balloon valvuloplasty, replacement


Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail
Medicine Study Notes : Cardiovascular : Mitral Stenosis |

Privacy Policy, Terms and Conditions, DMCA Policy and Compliant

Copyright © 2018-2024 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.