What is the Resistance of the Patient in a Defibrillation Shock?

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SUMMARY

The resistance of a patient during a defibrillation shock can be calculated using the fraction of charge remaining on the capacitor after 1.00 ms of discharge, which is 0.300. This calculation is distinct from the resistance in a standard RC circuit. The formula to determine the resistance involves the time constant and the characteristics of the capacitor used in the defibrillator. Understanding this concept is crucial for medical professionals and engineers working with defibrillation technology.

PREREQUISITES
  • Basic knowledge of capacitor discharge principles
  • Understanding of time constants in RC circuits
  • Familiarity with Ohm's Law
  • Concept of exponential decay in electrical circuits
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  • Study the mathematical derivation of capacitor discharge equations
  • Learn about the role of time constants in defibrillation
  • Research the specifications of defibrillator capacitors
  • Explore the physiological effects of electrical shocks on human resistance
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Medical professionals, biomedical engineers, and physics students interested in the electrical properties of defibrillation and patient safety during cardiac procedures.

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Homework Statement


When the defibrillation shock is applied, the capacitor discharges through the patient as shown in the diagram below:

CapDischarge.png


The fraction of charge remaining on the capacitor 1.00 ms after it begins discharging is 0.300.

Calculate the resistance of the patient. Note: This will not be the resistance of the resistor in the previous RC circuit.

Give your answer in units of Ohms (Ω). You do not need to supply a unit with your answer.

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