Cardic Monitoring Devices

Cardiac Monitoring Cardiac Monitoring DevicesDevices

Foothill Paramedic Program 60A

Introduction

Objectives• Identify various types of EKG Monitors

– 3 Lead– 12 Lead

• Describe various EKG functions– Monitoring– Defibrillation– Transcutaneous Pacing– Cardioversion

• Describe the use of Pulse Oximetry in the pre-hospital environment

• Describe the use of Capnography in the pre-hospital environment

Foothill College EMTP 60BFall 2012

ECG/EKG Monitors


• Electrocardiography (elektrokardiography)a trans-thoracic interpretation of the electrical

activity of the heart over a period of time.

• EKG monitor A computer designed to recognize, record and

display electrical activity within the heart.

• Electrocardiogram (elektrokardiogramm)The waveform produced and displayed by an EKG

monitor

Current Technology


Monitoring Terms• ElectrodeElectrode

Electrical detection device attached to the skin “the sticker”

• Monitor Cables wires that connect electrode to monitor

• Lead A tracing of the voltage difference between two electrodes.


3 Lead Vs. 12 Lead• 3 Lead EKG

– Created through the combination of 3 (limb) electrodes• Right arm (White)• Left arm (Black)• Left Leg (Red)

– Offers 3 views (leads) of the heart• Lead I• Lead II• Lead III

Foothill College

EMTP 60BFall 2012

““White Right, Smoke White Right, Smoke over Fire” over Fire”

3 Lead Vs. 12 Lead• 12 Lead EKG

– Combines the 3 limb electrodes with 6 chest electrodes

– Creates 12 views (leads) of the heart• 3 limb leads• 6 chest leads• 3 “augmented” leads


Interventional Functions• Transcutaneous (External) Pacing

Providing an electrical signal (stimulus) to the heart when it’s own built in (natural) pacemaker or conduction system has failed.Goal: Control the heart rate and/or rhythm

• Synchronized CardioversionDelivering a selected dose of electricity to the heart at a specific period in the cardiac cycle.Goal: To reset the hearts intrinsic firing rate.

• DefibrillationDelivering a selected dose of electricity to the heart at any period in the cardiac cycle.

Goal: To terminate disorganized electrical activityFoothill College

EMTP 60BFall 2012

Monitor Operation


Defibrillation

Pacing

Cardioversion

Pulse OximetryWhat it is..

A non-invasive method of monitoring a patients oxygen saturation.

What is does..• Pulse Ox probe measures

amount of light absorbed by oxygen saturated blood hemoglobin


Pulse Oximetry• Clinical significance

– Provides a clinical picture of a patients respiratory status.

– Especially useful for patients in respiratory distress.“Is the patient getting

oxygen into the blood?


CapnographyWhat it is..

A non-invasive method of monitoring a patients ventilatory status, perfusion and metabolism.

What is does..• Sampling devices measure

the amount of expired CO2 at the end of each respiratory cycle

End Tidal CO2

Normal Range 35-45 mm/Hg


Capnography

• Clinical Significance– Mainstream

• Verification of ET tube placement

• Viability• ROSC

– Side stream• Narcotic Overdose• DKA• Head Injuries• Chronic Respiratory Conditions


Review• ECG/EKG Monitors– Transcutaneous Pacing– Synchronized Cardioversion– Defibrillation

• Pulse Oximetry• Capnography

Questions?


Health & Medicine

Cardic Monitoring Devices