An otherwise healthy 27-year-old woman is referred to a cardiologist because of a murmur detected by her general practitioner during a routine health maintenance examination. She has a history of recurrent episodes of sore throat and fever during childhood. She emigrated from Kenya 6 years ago. Cardiac examination shows an opening snap followed by a late diastolic rumble, which is best heard at the fifth intercostal space in the left midclavicular line. Which of the following pressure-volume loop graphs is most likely to correspond to this patient's cardiac condition?
- A)A
- B)B
- C)C
- D)DGABARITO
- E)E
Explicação
Graph D shows the pressure-volume loop for mitral stenosis. The narrowed mitral valve restricts left ventricular filling during diastole, resulting in decreased end-diastolic volume. By the Frank-Starling law, reduced end-diastolic volume leads to decreased pr... Ver explicação completa e trilha adaptativa →