Pulseoximetry fianl
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Pulseoximetry fianl

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BMET 6th Batch,
National Health Training Center
Teku, kathmandu
Nepal

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Pulseoximetry fianl Pulseoximetry fianl Presentation Transcript

  • APresentation Report On Pulse Oximeter By: BISWAS LOHANI BMET 6th BATCH National Health Training Center Teku, Kathmandu Nepal 2012
  • HEMOGLOBINHemoglobin (abbreviated Hb) is the iron-containing oxygen- transport metalloprotein in the red blood cells of vertebrates. Hemoglobin transports oxygen from the lungs to the rest of the body, where it releases the oxygen for cell use.
  • What is a Pulse Oximeter?A Pulse Oximeter is a device used to perform the diagnostic procedure for determining the:Percentage of hemoglobin (Hb) that is saturated with oxygen The oxygen saturation (SpO2) is a measure of how much oxygen the blood is carrying as a percentage of the maximum it could carry and is sometimes referred to colloquially as the "sats" readingThe heart rate The heart rate refers to the number of times that the heart contracts in a period of one minute
  • TYPES OF OXIMETERSDesigns:Pulse Oximeter as part of an anesthetic machineA portable desktop unitA finger/mobile pulse Oximeter
  • Pulse Oximeter as part of an anesthetic machine
  • Pulse Oximeters (continue)Desktop Finger/mobile
  • What does a Pulse Oximeter tell you?A Pulse Oximeter can detect hypoxia (too little oxygen to fulfill the needs of the brain and body) before a patient shows signs of becoming cyanotic (bluish discoloration of the skin and mucous membranes due to not enough oxygen in the blood).
  • Pulse Oximeters may be used in patients:Undergoing surgical procedure Undergoing surgical procedureunder general anesthesia under conscious sedation
  • Pulse Oximeters may be used in patients:Emergency situations like loss of consciousness, trauma etc.After surgery during the recovery phaseMonitoring the blood oxygen saturation in various aviation situationsSport applications – e.g. mountaineering
  • Pulse Oximeters may be used in patients: In the ICU, Pulse Oximetry is used extensively on mechanically ventilated patients, as it can frequently detect problems with oxygenation before they are noticed clinically, as well as a valuable guide for weaning patients off ventilation and helping to assess the adequacy of a patients oxygen therapy. This continuing assessment process has been instrumental in the introduction of Pulse Oximeter usage within the community and homecare environment of patients suffering from a variety of heart and lung diseases and conditions Pulse Oximeters are routinely used in certain hospital wards and in casualty departments for immediate assessment of patients
  • Pulse Oximeter reading may not be accurate:Reduced peripheral pulsatile blood flowVenous congestion (partial obstruction of the veins) of an arm or legBright overhead lights, such as in an operating theatreShivering or significant, repeated movement of the sensor
  • Pulse Oximeter reading may not be accurate:Pulse oximetry struggles to distinguish between different forms of hemoglobin, such as carboxy-hemoglobin (hemoglobin combined with carbon monoxide)Nail varnish may cause falsely low readings with most pulse Oximeters, especially those colored blue or black
  • The following won’t affect thePulse Oximeter reading:Anemia Jaundice
  • But what is a "normal" reading? Firstly, we would ask "normal for whom"? A fit, healthy person should have an oxygen saturation level between 95% & 99%. Results lower than this, and especially below 90% may be caused by problems including lung diseases, such as COPD, breathing difficulties, cigarette smoking or circulatory problems such as excessive bleeding or blood vessel problems.
  • How does a Pulse Oximeter Work?The measurements are obtained by By measuring how much light has been absorbed by the oxygen in the blood, ansimply shining two wavelengths of light oxygen saturation or “sats” reading is(1 is a visible red beam, the other an established and displayed as ainvisible infrared beam) at e.g. the percentage of the maximum amount of oxygen the blood could carry.fingertip.
  • Q1 If a patient’s saturation isunacceptably low, what are yourimmediate actions? Check Airways, Breathing and Circulation (ABC)
  • Q1 If a patient’s saturation isunacceptably low, what are yourimmediate actions? Check Airways, Breathing and Circulation (ABC)
  • Q2 An elderly patient is admitted with pneumonia andhas a pulse oximetry reading of 75% breathing air. Withoxygen 6L per min, saturation improves to 85%. Whatare the implications of this oximetry reading?
  • Q2 An elderly patient is admitted with pneumonia andhas a pulse oximetry reading of 75% breathing air. Withoxygen 6L per min, saturation improves to 85%. Whatare the implications of this oximetry reading? The patient was severely hypoxic (Lack of Oxygen) Increase oxygen flow
  • Q3 What happens to the pulse Oximeter readingof a patient immediately after a cardiac arrest? The pulse would be lost (causing the alarm to sound) and the saturations will decrease
  • Q3 What happens to the pulse Oximeterreading of a patient immediately after acardiac arrest? The pulse would be lost (causing the alarm to sound) and the saturations will decrease
  • Q4 What happens to the Pulse Oximeterreading of a patient immediately after arespiratory arrest? The saturations decrease until cardiac arrest occurs
  • Q4 What happens to the Pulse Oximeterreading of a patient immediately after arespiratory arrest? The saturations decrease until cardiac arrest occurs
  • In conclusion…Pulse Oximetry is a useful modality for assessing a patient’s pulse rate and Hemoglobin Oxygen saturation in a number of routine and emergency medical situationsThe clinician should be aware of the limitations of Pulse Oximetry and the various factors that may produce a falsely low or high readingAlways keep the basics principles of medicine in mind, and keep a high level of suspicion - especially when the figures don’t make sense!
  • Preventive maintenanceQualitative Tests Chassis - verify physical integrity, cleanliness. Mount/Fasterners – verify physical integrity of mounts AC Plug - verify integrity. Line Cord - verify proper insulation and integrity. Strain Reliefs - verify physical integrity at both ends of line cord. Circuit Breaker/Fuse – verify integrity of external circuit breaker and/or value of external fuse. Cables - inspect patient cable and leads.
  • Quantitative TestsFor double insulated devices, indicate “DI” in place of resistance and leakage current values.Grounding Resistance [< 0.5 ohm]2.2 Chassis Leakage [< 300 microamps]
  • THANK YOU foryour undividedattention!!!I appreciate theopportunity toinvest into yourlives!!