Ninety years of pulse oximetry: history, current status, and outlook.

Quaresima, Valentina; Ferrari, Marco; Scholkmann, Felix (2024). Ninety years of pulse oximetry: history, current status, and outlook. Journal of biomedical optics, 29(Suppl 3), S33307. SPIE International Society for Optical Engineering 10.1117/1.JBO.29.S3.S33307

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SIGNIFICANCE

This year, 2024, marks the 50th anniversary of the invention of pulse oximetry (PO), which was first presented by Takuo Aoyagi, an engineer from the Nihon Kohden Company, at the 13th Conference of the Japanese Society of Medical Electronics and Biological Engineering in Osaka in 1974. His discovery and the development of PO for the non-invasive measurement of peripheral arterial oxygenation represents one of the most significant chapters in the history of medical technology. It resulted from research and development efforts conducted by biochemists, engineers, physicists, physiologists, and physicians since the 1930s.

AIM

The objective of this work was to provide a narrative review of the history, current status, and future prospects of PO.

APPROACH

A comprehensive review of the literature on oximetry and PO was conducted.

RESULTS AND CONCLUSIONS

Our historical review examines the development of oximetry in general and PO in particular, tracing the key stages of a long and fascinating story that has unfolded from the first half of the twentieth century to the present day-an exciting journey in which serendipity has intersected with the hard work of key pioneers. This work has been made possible by the contributions of numerous key pioneers, including Kurt Kramer, Karl Matthes, Glenn Millikan, Evgenii M. Kreps, Earl H. Wood, Robert F. Show, Scott A. Wilber, William New, and, above all, Takuo Aoyagi. PO has become an integral part of modern medical care and has proven to be an important tool for physiological monitoring. The COVID-19 pandemic not only highlighted the clinical utility of PO but also revealed some of the problems with the technology. Current research in biomedical optics should address these issues to make the technology even more reliable and accurate. We discuss the necessary innovations in PO and present our thoughts on what the next generation of PO might look like.

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