Emergency Medical Minute13 Syys 2022

Podcast 813: Pulse Oximetry

Contributor: Travis Barlock, MD

Educational Pearls:

Most oxygen in the body is bound to hemoglobin, forming oxyhemoglobin. Less than 1% of the oxygen in the body is dissolved in plasma.
Pulse Oximeters (Pulse Ox) function by emitting wavelengths of light from one side, and capturing the amount absorbed on the opposite side. A calculation determined the amount of saturation.
Pulse Ox relies on pulsations in arterial flow to create a photoplethysmogram (pleth) for measurements
- Patients with poor peripheral perfusion may have unreliable pulse ox.
- Patient with an LVAD have constant flow and also unreliable pulse ox.
Pulse Ox is a useful tool when pacing to determine mechanical capture. If there is disparity between the electrical wave pulse and the rate on pulse ox, there is likely no mechanical capture leading to poor distal flow.

References

Eecen CMW, Kooter AJJ. Pulsoximeters: werking, valkuilen en praktische tips [Pulse oximetry: principles, limitations and practical applications]. Ned Tijdschr Geneeskd. 2021;165:D5891. Published 2021 May 11.

Elgendi M. On the analysis of fingertip photoplethysmogram signals. Curr Cardiol Rev. 2012;8(1):14-25. doi:10.2174/157340312801215782

Summarized by Kirsten Hughes, MS4 | Edited by John Spartz MD & Erik Verzemnieks, MD

The Emergency Medical Minute is excited to announce that we are now offering AMA PRA Category 1 credits™ via online course modules. To access these and for more information, visit our website at https://emergencymedicalminute.org/cme-courses/ and create an account.

Donate to EMM today!

Tämä jakso on lisätty Podme-palveluun avoimen RSS-syötteen kautta eikä se ole Podmen omaa tuotantoa. Siksi jakso saattaa sisältää mainontaa.

Jaksot(1167)

Podcast 1012: Meth Sedation

Contributor: Aaron Lessen, MD Educational Pearls: Agitated patients who are intoxicated with methamphetamine pose a unique challenge when selecting a sedative to counter their symptoms. Is there ...

13 Heinä 1min

Podcast 1011: Creepy Crawlies

Contributor: Meghan Hurley, MD Educational Pearls: What animal is the most lethal to humans? Depending on how we define lethal, and animal, this answer is actually not straight forward. Globall...

6 Heinä 7min

Podcast 1010: First Pass Intubation Success

Contributor: Travis Barlock, MD Educational Pearls: First-pass success is critical to limit complications from apnea, hypoxia, and airway trauma. Complication rate for patients intubated on the f...

29 Kesä 3min

On the Streets- Zero to Rodeo

Dan Orbidan, OMS-II and Dr. Travis Barlock, MD discuss a real out of hospital call. This episode covers the implications of a pharmacologically abnormal patient presentation and the pre and post hospi...

22 Kesä 35min

Carepoint Journal Club- Neurology

Carepoint Journal Club is a quarterly series with discussions about a medical topic, brought to you by Carepoint's Emergency Physicians.

15 Kesä 36min

Podcast 1009: Prevention for Recurrent UTI

Contributor: Aaron Lessen, MD Educational Pearls: UTIs are commonly seen in older women We often see them taking long-term prophylactic antibiotics because of common recurrence. Around 20-30% of...

8 Kesä 1min

Podcast 1008: Acupuncture for Low Back Pain in Older Adults

Contributor: Aaron Lessen, MD Educational Pearls: Back pain is a common presenting complaint in the emergency department. Challenges arise when tailoring care to elderly populations using standar...

1 Kesä 2min

Podcast 1007: Caffeine Pharmacology

Contributor: Travis Barlock, MD Educational Pearls: Caffeine Geography and Types: Caffeine is found throughout the world and has evolved independently in various plants that are not evolutionarily...

25 Touko 4min