B&K Precision 2530B Manual de instrucciones Pagina 12
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Valorado. / 5. Basado en revisión del cliente
Figure 6:
At this point you should be using the smart cursor to make all your measurements for
the following activities.
1. Measure the EKG of a person who is at rest. Person whose EKG is being measured
should relax, remain still, and breathe normally. Someone else should operate the
computer while data is collected.
2. Next measure the EKG of the same person while she or he is standing up.
3. Measure the intervals between P-Q, QRS, and Q-T. An example of an EKG signal is
shown in Fig. 7. The following intervals are known as the P wave, the QRS complex,
and the T wave, respectively. Explain the significance in relation to the heart. What
is the peak-to-peak value of the voltage between the R wave and the S wave? What is
the definition of this occurrence?
6.1 Additional questions and exercise
The sequence from P wave to T wave represents on heart cycle. The number of such cycles in
a minute is called the heart rate and is typically 70-80 cycles (beats) per minute at rest. What
was the frequency of your heart during the experiment (in beats/min and Hz)? Note: Do
not be alarmed if your EKG does not correspond to the numbers. These numbers represent
typical averages and many healthy hearts have data that fall outside of these parameters.
The sensor is NOT intended for medical diagnoses. You’re going to meaure your EKG cycle
before you exercise and after!
First measure the EKG at rest. Then disconnect the sensor wires from the electrode
patches, but leave the patches on the person whose EKG is being measured. Have the
person exercise for two minutes. Jogging in place or doing jumping jacks should be sufficient.
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