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	<owl:Ontology rdf:about="https://www.wikidoc.org/index.php/Special:ExportRDF/WBR0650">
		<swivt:creationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2026-07-31T11:51:07+00:00</swivt:creationDate>
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		<rdf:type rdf:resource="https://www.wikidoc.org/index.php/Special:URIResolver/Category-3AWBRQuestion"/>
		<rdfs:label>WBR0650</rdfs:label>
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		<property:AnswerA rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Rheumatoid arthritis</property:AnswerA>
		<property:AnswerAExp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">'''Incorrect''' Rheumatoid arthritis is a connective tissue disease characterized by pain and stiffness in the joints.  Valvular disease can be a  feature of rheumatoid arthritis. In a patient with a history of immigration and fever treated with penicillin, rheumatic fever is more likely.  There are no other clinical signs of rheumatoid arthritis in this patient.</property:AnswerAExp>
		<property:AnswerB rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Mitral regurgitation</property:AnswerB>
		<property:AnswerBExp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">'''Incorrect''' Mitral regurgitation is characterized by a holosystolic murmur at the cardiac apex. Dyspnea on exertion is the most common presentation</property:AnswerBExp>
		<property:AnswerC rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Mitral Stenosis</property:AnswerC>
		<property:AnswerCExp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Diastolic murmur after an opening snap is the classic presentation of mitral stenosis</property:AnswerCExp>
		<property:AnswerD rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Endocarditis</property:AnswerD>
		<property:AnswerDExp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">'''Incorrect''' Endocarditis is often accompanied by fever , and presents as a new murmur or change in an existing murmur. It is diagnosed by blood cultures and vegetations on cardiac valves on echocardiography. The patient in this vignette does not display fever or other acute infective symptoms</property:AnswerDExp>
		<property:AnswerE rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Ventricular septal defect</property:AnswerE>
		<property:AnswerEExp rdf:datatype="http://www.w3.org/2001/XMLSchema#string">'''Incorrect''' Ventricular septal defects are characterized by  a holosystolic murmur at the lower left sternal border</property:AnswerEExp>
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		<property:Explanation rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The murmur described here is the classic murmur of mitral stenosis, a diastolic murmur after an opening snap. An immigrant patient with a fever treated with penicillin should raise suspicion for rheumatic fever. During pregnancy, plasma volume increases, thereby increasing  blood flow through the narrowed mitral valve and causing pregnancy related cardiomyopathy.  Other special features of mitral stenosis are due to pressure of enlarged left atrium on adjacent tracts.  For example,dysphagia may occur due to pressure on esophagus, hoarseness of voice occurs due to pressure on recurrent laryngeal nerve and cough occurs due to pressure on the bronchus. Transthoracic echocardiogram is the best initial diagnostic test for all valvular diseases.Diuretics are the best initial therapy for mitral stenosis.

'''Educational Objective:''' An immigrant pregnant patient with a diastolic murmur after an opening snap is the classic presentation of mitral stenosis due to rheumatic fever

'''References:''' Page 29,30,86,87 Master the boards Step 2 CK second edition, Page 65,119 Master the  boards step 3 2009 edition, http://www.wikidoc.org/index.php/Mitral_stenosis_history_and_symptoms  C. Michael Gibson, M.S., M.D&lt;br/&gt;
'''Educational Objective:''' &lt;br/&gt;
'''References:'''</property:Explanation>
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		<property:PageAuthor rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Neeraja Danda M.B.B.S</property:PageAuthor>
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		<property:Prompt rdf:datatype="http://www.w3.org/2001/XMLSchema#string">A 27 year old female pregnant patient in her 26th week of gestation presents to the physician with complaints of difficulty in breathing, difficulty in swallowing and cough . Vitals include pulse rate 95/min, blood pressure 100/70 mm Hg and respiratory rate 22/min. On cardiac auscultation, a diastolic murmur after an opening snap is heard. Past history is significant for a fever which was treated with penicillin but she does not remember the diagnosis. She is an immigrant from India, having immigrated  to the United States 5 years ago.What is the most likely diagnosis?</property:Prompt>
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		<property:WBRKeyword rdf:resource="&wiki;Mitral_stenosis"/>
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		<swivt:wikiPageModificationDate rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-10-28T01:19:42Z</swivt:wikiPageModificationDate>
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