Therapeutic Equipment Quiz: Pacemakers, Defibrillators, Diathermy, Ventilators
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Questions and Answers

Which type of pacemaker can regulate the heart rate by giving external electrical stimulation impulses?

  • External pacemakers (correct)
  • Internal pacemakers
  • Programmable pacemakers
  • Rate responsive pacemakers

    • What is the specialized tissue in the right atrium of the heart known as?

  • Defibrillator node
  • Ventricular node
  • Sino-atrial node (correct)
  • Pacemaker node

    • In abnormal situations, what happens if the natural pacemaker ceases to function or becomes unreliable?

  • Decrease in heart rate (correct)
  • No change in heart rate
  • Increase in heart rate
  • Irregular heartbeats

    • Which therapeutic equipment is used to give external electrical stimulation impulses to regulate the heart rate?

    <p>Defibrillator</p> Signup and view all the answers

    What type of diathermy uses short wave and micro wave technology?

    <p>Short wave diathermy</p> Signup and view all the answers

    What is the need for a pacemaker, as discussed in the text?

    <p>To regulate the heart rate</p> Signup and view all the answers

    What is the basic structure of a pacemaker?

    <p>A pulse generator and a lead</p> Signup and view all the answers

    Which type of electrode arrangement can be used with cardiac pacemakers?

    <p>Both bipolar and unipolar systems</p> Signup and view all the answers

    What is the main difference between fixed rate and demand pacemakers?

    <p>Fixed rate pacemakers are intended for patients with permanent heart blocks, while demand pacemakers avoid competition between natural and artificial rhythm</p> Signup and view all the answers

    What determines the frequency and duration of the impulses in a pacemaker?

    <p>The impulse-forming circuit</p> Signup and view all the answers

    When are external pacemakers used?

    <p>When expected to be present for a short time as an emergency measure</p> Signup and view all the answers

    What does the lead include in a pacemaker?

    <p>Termination and insulated conductors</p> Signup and view all the answers

    In a bipolar system for cardiac pacing, how many electrodes are placed on the heart for myocardial stimulation?

    <p>Two</p> Signup and view all the answers

    Why has the demand pacemaker almost replaced the fixed rate pacemaker?

    <p>Because it avoids competition between natural rhythm and artificial rhythm.</p> Signup and view all the answers

    What is the mode of application of stimulating pulses to the heart in internal pacemakers?

    <p>Long-term pacing mode</p> Signup and view all the answers

    What is included in the electronic circuit of a pacemaker?

    <p>Impulse-generating circuit and output circuit</p> Signup and view all the answers

    What is the specialized tissue in the right atrium of the heart known as?

    <p>Sino-atrial node</p> Signup and view all the answers

    What type of diathermy uses short wave and micro wave technology?

    <p>Short wave Diathermy and Micro wave Diathermy</p> Signup and view all the answers

    What is the mode of application of stimulating pulses to the heart in internal pacemakers?

    <p>Electronic instrument called a ‘pacemaker’</p> Signup and view all the answers

    What determines the frequency and duration of the impulses in a pacemaker?

    <p>Electronic circuit of the pacemaker</p> Signup and view all the answers

    What is the main difference between fixed rate and demand pacemakers?

    <p>Fixed rate pacemakers have a constant impulse rate, while demand pacemakers have a rate that varies with the need of the heart</p> Signup and view all the answers

    When are external pacemakers used?

    <p>In abnormal situations, when the natural pacemaker ceases to function or becomes unreliable</p> Signup and view all the answers

    What are the two main parts of a pacemaker?

    <p>Pulse generator and lead</p> Signup and view all the answers

    What types of waveforms are commonly used for pacing?

    <p>Round-topped rectangular pulses</p> Signup and view all the answers

    How many electrodes are placed on the heart for myocardial stimulation in a unipolar system for cardiac pacing?

    <p>One electrode</p> Signup and view all the answers

    What is the main difference between external and internal pacemakers?

    <p>External pacemakers are used for short-term emergency situations, while internal pacemakers are used for long-term pacing due to permanent damage.</p> Signup and view all the answers

    What type of pacemaker is intended for patients having permanent heart blocks?

    <p>Fixed rate/Free running/Asynchronous pacemaker</p> Signup and view all the answers

    What determines the frequency and duration of the impulses in a pacemaker?

    <p>Impulse-forming circuit</p> Signup and view all the answers

    What is the specialized tissue in the right atrium of the heart known as?

    <p>Sinoatrial node</p> Signup and view all the answers

    Which type of electrode arrangement can be used with cardiac pacemakers?

    <p>Bipolar or unipolar system</p> Signup and view all the answers

    What type of pacemaker rhythm avoids competition between the heart’s natural rhythm and the pacemaker rhythm?

    <p>On demand/Synchronous pacemaker</p> Signup and view all the answers

    When are external pacemakers used?

    <p>When the heart block presents as an emergency and when it is expected to be present for a short time</p> Signup and view all the answers

    Study Notes

    Pacemaker Overview

    • A pacemaker is a therapeutic equipment used to regulate heart rate by giving external electrical stimulation impulses.
    • The basic structure of a pacemaker includes two main parts: a pulse generator and a lead.
    • The pulse generator produces electrical impulses, and the lead carries these impulses to the heart.

    Types of Pacemakers

    • Fixed rate pacemakers: Produce impulses at a fixed rate, unaffected by the heart's natural rhythm.
    • Demand pacemakers: Regulate heart rate according to the heart's natural rhythm, only producing impulses when necessary.
    • External pacemakers: Used temporarily until a permanent pacemaker is implanted or until the heart's natural pacemaker resumes function.
    • Internal pacemakers: Implanted permanently in the body to regulate heart rate.

    Pacemaker Function

    • The frequency and duration of impulses in a pacemaker are determined by the pulse generator.
    • A pacemaker can be set to produce impulses in a bipolar or unipolar electrode arrangement.
    • In a bipolar system, two electrodes are placed on the heart for myocardial stimulation.
    • In a unipolar system, one electrode is placed on the heart and the other on the metal casing of the pacemaker.

    Heart Anatomy and Pacemaker Need

    • The specialized tissue in the right atrium of the heart is known as the sinoatrial (SA) node or natural pacemaker.
    • A pacemaker is needed when the natural pacemaker ceases to function or becomes unreliable, leading to abnormal heart rhythms.
    • A pacemaker is intended for patients having permanent heart blocks, which can cause abnormal heart rhythms.

    Diathermy and Pacemaker Rhythm

    • Diathermy using short wave and micro wave technology can be used in conjunction with pacemakers.
    • A pacemaker rhythm that avoids competition between the heart's natural rhythm and the pacemaker rhythm is known as asynchronous pacing or ventricular inhibited pacing.
    • External pacemakers are used when the natural pacemaker is unreliable or when a permanent pacemaker is not yet implanted.

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    Description

    Test your knowledge on therapeutic equipment such as pacemakers, defibrillators, diathermy, and ventilators. Explore topics like types of pacemakers, defibrillators with synchronizer circuit, diathermy techniques, nerve and muscle stimulators, and the need for pacemakers.

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