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O2 sat and Pulse Oximetry (Strong Exam)

A discussion of the principles and limitations of pulse oximetry, the normal range of oxygen saturation, and general etiologies of a reduced O2 sat (i.e. hypoxemia). 0:00 Introduction 0:28 General principles of pulse oximetry 2:23 Comparison between pulse ox and ABGs 4:02 Limitations of pulse oximetry 10:06 The normal range of O2 sat 11:41 Etiologies of hypoxemia (low O2 sat) 12:43 Common pitfalls/mistakes with measuring & interpreting O2 sats References: Sinex JE. Pulse oximetry: principles and limitations. Am J Emerg Med. 1999; 17:59-67. Jensen LA, Onyskiw LE, Prasad NG. Meta-analysis of arterial oxygen saturation monitoring by pulse oximetry in adults. 1998; 27:387-408. Sjoding MW, Iwashyna TJ, Valley TS. Change the Framework for Pulse Oximeter Regulation to Ensure Clinicians Can Give Patients the Oxygen They Need. Am J Respir Crit Care Med. 2023; 207:661-664. Sjoding MW, et al. Racial Bias in Pulse Oximetry Measurement. NEJM. 2020. 383;2477-2478. Shi C. et al. The accuracy of pulse oximetry in measuring oxygen saturation by levels of skin pigmentation: a systematic review and meta-analysis. BMC Medicine. 2022; 20:267. Louw A, et al. Accuracy of pulse oximetry in the intensive care unit. 2001; 27:1606-1613. Enright PL, Sherrill DL. Reference Equations for the Six-Minute Walk Test in Healthy Adults. Am J Respir Crit Med. 1998; 158:1384-1387. Rodriguez-Molinero A, Narvaiza L, Ruiz J, et al. Normal respiratory rate and peripheral blood oxygen saturation in the elderly population. J Am Geriatr Soc. 2013; 61:2238-40. Ceylan B, et al. Evaluation of oxygen saturation values in different body positions in healthy individuals. J Clin Nurs. 2016; 25:1095-1100. #physicalexam #osce #hypoxemia