Examkin

Question

Difficulty: EasyCardiovascular System

Match the following classic auscultatory findings with their most likely underlying valvular pathology.

  • Opening snap followed by a low-pitched, rumbling diastolic murmur at the apexMitral stenosis
  • Harsh, crescendo-decrescendo systolic murmur at the right upper sternal border radiating to the carotidsAortic stenosis
  • Holosystolic, high-pitched blowing murmur at the apex radiating to the axillaMitral regurgitation
  • High-pitched, blowing early diastolic decrescendo murmur heard best at the left sternal borderAortic regurgitation

Answer

The auscultatory findings map to their respective valvular pathologies: the opening snap with diastolic rumble indicates mitral stenosis; the harsh systolic crescendo-decrescendo murmur indicates aortic stenosis; the holosystolic apical murmur indicates mitral regurgitation; and the early diastolic decrescendo murmur indicates aortic regurgitation.
Each auscultatory description contains pathognomonic features for the matched valvular disorder based on foundational hemodynamic principles of timing, optimal location, anatomical radiation, and sound quality.

Step-by-Step Solution

1
Identify the timing of the murmur relative to the cardiac cycle (systole vs. diastole).
Determines whether the pathology involves forward flow through a stenotic valve or backward flow through an incompetent valve.
Timing is the most critical initial step in classifying heart murmurs.
2
Evaluate the location of maximal murmur intensity and its pattern of radiation.
Localizes the specific valve involved (e.g., apex for mitral lesions, right upper sternal border for aortic lesions).
Anatomic position and blood flow direction dictate where specific murmurs are auscultated best on the chest wall.
3
Assess for specific acoustic characteristics.
Identifies classic diagnostic features such as an opening snap for mitral stenosis or a crescendo-decrescendo shape for aortic stenosis.
Specific structural valve lesions produce unique flow dynamics and characteristic cardiac sounds.

Key Concept

Clinical recognition of primary valvular heart diseases via cardiac auscultation
Rate this question

Topics

Cardiovascular System

More questions from this topic