Echocardiography Techniques and Applications Flashcards
6 cards from real CCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Echocardiography Techniques and Applications flashcards as text
Which echocardiographic view is obtained by placing the transducer at the left parasternal border to visualize the long axis of the heart?
Answer: Parasternal long-axis view
The parasternal long-axis view is obtained at the left parasternal border and displays the left ventricle, mitral valve, aortic valve, and aortic root along the long axis.
In M-mode echocardiography, which measurement is used to calculate left ventricular ejection fraction using the Teichholz method?
Answer: Left ventricular end-diastolic and end-systolic dimensions
The Teichholz method uses left ventricular end-diastolic dimension (LVEDD) and end-systolic dimension (LVESD) from M-mode to calculate ejection fraction.
What does an E/A ratio greater than 2 with a short deceleration time indicate in Doppler assessment of mitral inflow?
Answer: Grade III restrictive diastolic dysfunction
An E/A ratio >2 with a deceleration time <160 ms indicates Grade III (restrictive) diastolic dysfunction, suggesting elevated filling pressures.
Which Doppler modality uses a sample volume placed at a fixed depth and provides spectral analysis of flow at that specific location?
Answer: Pulsed wave Doppler
Pulsed wave Doppler uses a sample volume at a specific depth with range resolution, allowing interrogation of flow at a precise location but limited by the Nyquist limit.
During a transesophageal echocardiogram (TEE), which structure is best visualized in the mid-esophageal four-chamber view?
Answer: All four cardiac chambers and AV valves
The mid-esophageal four-chamber view at approximately 0 degrees displays all four chambers, the mitral valve, tricuspid valve, and interatrial septum simultaneously.
What is the significance of a left ventricular wall motion score index (WMSI) greater than 1.0 on stress echocardiography?
Answer: Evidence of regional wall motion abnormalities suggesting ischemia or infarction
A WMSI >1.0 indicates that at least one segment has abnormal wall motion (hypokinesis, akinesis, or dyskinesis), suggesting ischemia or prior infarction.