What is oxygen saturation using pulse oximetry

Measurement of oxygen saturation using pulse oximetry

Prior to executing the surgery, take customary procedures to maintain infection control and patient safety.  Verify the physician's order to ensure that the procedure is necessary and serves a purpose.  Explain the technique to the patient clearly in order to gain cooperation and lessen worry.  Prepare all required equipment in accordance with the manufacturer's instructions, ensuring that each item is clean, functional, and ready to use.  Before taking the reading, make sure the patient has been getting the appropriate dose of oxygen for at least 15 minutes, since this allows oxygen levels to stabilize and ensures measurement accuracy.

Choose an acceptable probe site for the patient's age and condition, such as the finger, toe, or ear lobe.  To get an accurate reading, make sure the targeted spot is clean, warm, and has excellent circulation.  Place the probe carefully so that the sensors are opposite each other, allowing for good alignment and excellent light transmission and detection.  If utilizing the ear lobe as the probe site, carefully massage the area for about 10 seconds before inserting the probe to improve blood flow and signal quality.

Turn on the pulse oximeter and allow it to run its self-check function.  Once the gadget is ready, the pulse indicator light should start flashing in time with the patient's pulse.  Check the oximeter's displayed pulse rate to confirm it matches the patient's apical or radial pulse.  To avoid false SpO₂ readings, ensure proper pulse detection, patient movement, and circulation at the monitoring site.

To ensure accuracy, steady the SpO₂ reading for several minutes before recording.  After the measurement is completed, remove the probe, turn off the pulse oximeter, and unplug the unit if necessary.  To ensure cleanliness and prevent cross-contamination, carefully clean the probe with an alcohol wipe.  Document the process, including SpO₂ value, pulse rate, site, patient state, and any observations made during the test.

Begin by assessing the posterior tibial pulse.  If the pulse is difficult to palpate, attempt passive dorsiflexion of the foot, which relaxes the surrounding tissues and makes the pulse easier to find.  Once discovered, count the pulses for one minute to precisely measure the heart rate.

 To find the dorsalis pedis pulse, palpate the top of the foot just lateral to the big toe's extensor tendon.  Apply very moderate pressure, as too much power can easily destroy this superficial pulse.  After identifying the pulse, count the pulses for one minute and assess the rhythm and strength.  Finally, record the technique, including the pulse rate, location, and any anomalies or difficulties noticed during palpation.