What is the frequency range of Chest-wall movements?
A. 0.025 to 0.05 Hz
B. 0.05 to 0.1 Hz
C. 0.1 to 20 Hz
D. 20 to 100 Hz
Answer:C
What is the frequency range of Chest-wall movements?
A. 0.025 to 0.05 Hz B. 0.05 to 0.1 Hz C. 0.1 to 20 Hz D. 20 to 100 Hz
Explanation: An apexcardiograph records the chest-wall movements over the apex of the heart. These movements are in the form of vibrations having a frequency range of 0.1 to about 20 Hz.