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ABSTRACT 1790 _Poster Session II, Sunday, 5/2 (poster 44)_ Pulse oximetry is widely used in the NICU, but numerous false alarms can cause clinicians to distrust displayed oxygen saturation

(%SpO2) and pulse rate (PR) values. Masimo Corp. (Irvine, CA) has developed a unique sensor design and signal processing algorithms (Masimo SET) that detect and discard sources of

interference in %SpO2 and PR. A study population was selected at random among NICU infants that were unsedated and on supplemental oxygen and/or mechanical ventilation. Masimo LNOP Neo and

Nellcor N-25 sensors were placed on opposite feet and attached to the Masimo SET and Nellcor N-200 pulse oximeters, respectively. Each infant was monitored for a total of 6 hours. The

sensors were switched in the middle (at 3 hours) of each case. Data (ECG heart rate from Datascope Passport, %SpO2 and PR from the two pulse oximeters) were sampled from the serial output of

each device once every second (1 Hz) by a PC data acquisition system. The raw pulse oximeter waveform was analyzed whenever either the Nellcor or Masimo pulse oximeters had detected

hypoxemia. This technique (Comp. Biol. Med. 26:143-159, 1996) allows a manual SpO2 reference which has been shown to be reliable in determining "False" %SpO2 readings. A total of

156 hours of monitoring time was accumulated and examined for false %SpO2 alarms, and true and false bradycardic events. False %SpO2 and PR alarms occurring at the same time were counted as

one alarm. Results: Masimo SET demonstrated a 92% reduction in (Table) false hypoxia and bradycardia alarm duration. Also, Masimo SET identified 12 of 14 bradycardias (86%) versus 2 o/f 14

(14%) for the Nellcor. Conclusions: Routine use of Masimo SET pulse oximetry in the NICU should result in dramatically fewer false %SpO2 alarms and zero-outs, while capturing more true

events than use of conventional pulse oximetry. Better monitoring should lead to more timely clinical interventions, indicating also that O2 could be more effectively titrated leading to

possible reductions in hypoxic (e.g., pulmonary hypertension) and hyperoxic (e.g., retinopathy) pathology. Study was funded by Masimo Corp however authors hold no equity in said company.

AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Pediatrics/Neonatology, University of Colorado Health Sciences Center, Denver, CO William W Hay Jr, Donna J Rodden, Shannon M Collins, Diane L

Melara, Kathryn A Hale & Lucy M Fashaw Authors * William W Hay Jr View author publications You can also search for this author inPubMed Google Scholar * Donna J Rodden View author

publications You can also search for this author inPubMed Google Scholar * Shannon M Collins View author publications You can also search for this author inPubMed Google Scholar * Diane L

Melara View author publications You can also search for this author inPubMed Google Scholar * Kathryn A Hale View author publications You can also search for this author inPubMed Google

Scholar * Lucy M Fashaw View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS

ARTICLE Hay, W., Rodden, D., Collins, S. _et al._ Pulse Oximetry in the NICU: Conventional Vs Masimo SET. _Pediatr Res_ 45, 304 (1999). https://doi.org/10.1203/00006450-199904020-01807

Download citation * Issue Date: 01 April 1999 * DOI: https://doi.org/10.1203/00006450-199904020-01807 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this

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