|Type of service:||Writing from scratch|
|Work type:||lab report|
|Deadline:||6 Dec, 08:07 AM (23h)|
|Academic level:||College (3-4 years: Junior, Senior)|
|Subject or discipline:||Medical Sciences (Anatomy, Physiology, Pharmacology etc.)|
|Number of sources:||0|
|Provide digital sources used:||No|
|# of pages:||4|
|# of words:||1100|
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L17 – Heart Sounds (4.0.2 Jan 6 2014)
File name: l11-L17
First recording (starts at event labeled ‘Seated, at rest’): Seated, relaxed, followed by deep breath cycle.
Second recording (starts at event labeled ‘After exercise’): Seated and relaxed, recovering from moderate exercise.
L17 DATA REPORT
Name: Height: Age:
Note: This Data Report assumes that all lesson recordings were performed, which may not be the case for your lab. Please disregard any references to excluded recordings.
- Data and Calculations
- Heart Sound Measurements
Complete Table 17.1 with Recording 1 and Recording 2 data and complete the required calculations.
|Selected area||Measurement||Seated, at rest||After exercise|
|R-wave to next R-wave||98.68 bpm||100.67||85.47||112.36|
|R-wave to 1st heart sound||0.038 sec||0.036||0.036||0.026|
|R-wave to 2nd heart sound||0.286 sec||0.302||0.29||0.24|
|1st to 2nd heart sound||0.26 sec||0.262||0.248||0.218|
|2nd sound to next 1st sound||0.326 sec||0.384||0.422||0.314|
|1st heart sound interval||2.5mv||2.47mv||2.00 mv||9.63 mv|
|2nd heart sound interval||0.967 mv||0.966 mv||1.125 mv||2.41 mv|
- Description of Heart Sounds Note: You may copy and paste descriptions from the Lesson 17 journal here. .
Describe the sounds of each of the following heart valves in terms of intensity (loudness), pitch (frequency) and duration (length). Begin with the aortic valve and compare others to it. This is a subjective description.
- Relative to the electrical and mechanical events of the cardiac cycle, what do each of the measurements in Table 17.1 represent?
Delta T: R-wave to first sound:
R-wave to second sound:
first to second:
second sound to next first sound:
P-P: first sound:
- Note whether the measured values in Table 17.1 increased, decreased or did not change from the resting value when heart rate increased.
|Measured Value||Increased||Decreased||No Change|
|Delta T R-wave to 1st sound||ae||inhale exhale|
|R-wave to 2nd sound||inhale||ae||exhale|
|1st to 2nd||exhale ae||inhale|
|2nd sound to next 1st sound||inhale exhale||ae|
|P-P 1st sound||ae||exhale||inhale|
|2nd sound||ae and exhale||inhale|
- Explain why each of these would change
- Briefly describe the cause of the turbulence associated with each of the four heart sounds:
- Which of the four heart sounds is loudest? Give a reason.
- Does ventricular ejection occur during ventricular depolarization or during ventricular repolarization?
Refer to your experimental record before you answer, and explain your answe
- Which cardiac valves close during ventricular systole? Which cardiac valves close during ventricular diastole?
- Define “systolic murmur” and give one example of a cause.
- Define “diastolic murmur” and give one example of a cause.
- Define “cardiac cycle.”
- Briefly characterize the relationship between the electrical events and the mechanical events of the cardiac cycle.
III. OPTIONAL Active Learning Portion
- Experimental Results
End of Lesson 17 Data Report
BSL 4.0 DRL17-02242012