Calculate magnitude of the hearth dipole moment

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Reference no: EM133287843

Q1: For an excitable cellRheobase currentis given as 5μA.a)What is the Rheobase current? b)The cell is stimulated with a current strength of 4μA for 60 seconds. How will be cell membrane potential change by time in the first 30 seconds, and in the next 30 seconds.

Q2: A premature baby is under ECG monitoring; pediatric electrodes with 0.5 cm2contact area are used. The maximum measured voltage is 2mV, the distance between pickup electrodes is 10 cm, the heart dipole length is 0.5cm, the distance between the heart dipole and lines connecting pickup electrodes is 3cm, and the specific resistance of tissue is 2?m. Calculate a) Magnitude of the hearth dipole moment b) What can be done to increase the picked-up voltage by 50%.c) How will the picked-up voltage change if adult ECG electrodes with 1 cm2contact area are used instead, and list all other benefits if there is any.

Reference no: EM133287843

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