Pulse and pulse oximetry in the medical sector
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Pulse Oximeter Usage and Interpretation
Introduction
The pulse oximeter is a crucial tool for assessing oxygen saturation and pulse rate.
Important Points:
- Measures percentage of oxygen attached to haemoglobin.
- Typically used on patients with respiratory conditions like COPD.
Usage and Procedure
Placement and Procedure:
- Place the pulse oximeter on the patient's finger.
- Ensure the finger is clean and free from obstruction.
- Use any finger except the one used for blood pressure measurement.
Considerations:
- Ensure the finger is clean and unimpeded by substances like grease or nail varnish.
- For children, use appropriate-sized probes designed for their age.
Interpretation and Intervention
Readings:
- Ideal oxygen saturation is 96% or above.
- If oxygen saturation falls below 88%, it indicates an emergency.
Additional Assessments:
- Check pulse rate audibly and manually for strength and regularity.
- Assess capillary refill time by pressing fingernail and observing color change.
Assessment of Capillary Refill
Procedure:
- Press fingernail down for five seconds.
- Release and observe time taken for fingernail to return to pink color.
Interpretation:
- Capillary refill should occur within two seconds.
- Delayed refill indicates potential circulation problems.
Conclusion
Understanding pulse oximeter readings and additional assessments like capillary refill time is essential for effective patient care and timely intervention.