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Questions and Answers
What is the purpose of examining arterial pulses?
What is the purpose of examining arterial pulses?
- To count the rate of the heart and assess the amplitude of the pulse wave (correct)
- To measure blood pressure and determine heart rhythm
- To identify the location of pulse points and assess the time lag from cardiac systole
- To detect obstructions to blood flow and assess the heart rate
What is the time lag from cardiac systole for the femoral pulse?
What is the time lag from cardiac systole for the femoral pulse?
- 75ms (correct)
- 30ms
- 80ms
- 60ms
How is heart rate measured from an ECG?
How is heart rate measured from an ECG?
- By dividing 300 by the number of large squares between two successive R-waves of QRS complex (correct)
- By calculating the average duration of P-waves
- By counting the number of small squares between T-waves
- By measuring the amplitude of the QRS complex
Where is the radial pulse located?
Where is the radial pulse located?
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Which arteries should be examined to assess the arterial pulse in all 4 limbs and both sides of the neck?
Which arteries should be examined to assess the arterial pulse in all 4 limbs and both sides of the neck?
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In which of the following conditions does heart rate typically decrease?
In which of the following conditions does heart rate typically decrease?
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Which of the following situations is most likely to result in increased heart rate?
Which of the following situations is most likely to result in increased heart rate?
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What is a common cause of tachycardia based on the given information?
What is a common cause of tachycardia based on the given information?
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Study Notes
Arterial Pulse Examination
- Examining arterial pulses helps assess cardiovascular health and detect any abnormalities.
Pulse Locations and Timing
- The femoral pulse has a time lag of approximately 70-80 milliseconds from cardiac systole.
- The radial pulse is located at the wrist.
Heart Rate Measurement
- Heart rate can be measured from an ECG (electrocardiogram) by counting the number of QRS complexes per minute.
Pulse Examination in Limbs and Neck
- To assess the arterial pulse in all 4 limbs and both sides of the neck, the following arteries should be examined:
- Brachial arteries in the upper arms
- Radial arteries in the wrists
- Femoral arteries in the groin
- Dorsalis pedis arteries in the feet
- Posterior tibial arteries in the legs
- Carotid arteries in the neck
Heart Rate Changes in Different Conditions
- Heart rate typically decreases in:
- Trained athletes
- Heart rate is likely to increase in:
- Stressful or anxious situations
- During exercise
- Due to certain medications
- A common cause of tachycardia (rapid heart rate) is:
- Stress and anxiety
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