Effect of Different Nail Polish Colors on Oxygen Saturation and Non-Invasive Hemoglobin Measurements: Cohort Study Farklı Oje Renklerinin Oksijen Satürasyonu ve Noninvaziv Hemoglobin Ölçümleri Üzerine Etkisi: Kohort Araştırması
Turkiye Klinikleri Journal of Medical Sciences, cilt.46, sa.3, ss.235-240, 2026 (Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 46 Sayı: 3
- Basım Tarihi: 2026
- Doi Numarası: 10.5336/medsci.2026-117775
- Dergi Adı: Turkiye Klinikleri Journal of Medical Sciences
- Derginin Tarandığı İndeksler: Scopus, Central & Eastern European Academic Source (CEEAS), CINAHL, EMBASE, TR DİZİN (ULAKBİM), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest)
- Sayfa Sayıları: ss.235-240
- Anahtar Kelimeler: cosmetics, monitoring, nails, Oximetry
- Gazi Üniversitesi Adresli: Evet
Özet
Objective: Oxygen saturation (SpO₂), noninvasive hemoglobin (SpHb), perfusion index (PI), and pleth variability index (PVI) are widely used in operating rooms and intensive care units. How-ever, the accuracy of these measurements can be affected by nail polish. This study investigated whether various nail polish colors influence non-invasive readings of SpO₂ and SpHb. Material and Methods: In this single-centre, randomised study, 15 healthy volunteers were enrolled. Nine different nail polish colors (white, yellow, orange, pink, red, pur-ple, blue, green, and black) were applied to the participants' fingernails in a rotational design, with one finger left unpolished as a control. SpO₂, SpHb, PI, and PVI were measured from each finger using a Masimo Root® monitor after a 2-minute stabilization period. Results: Compared to the unpolished control (SpO₂: 97.07±0.25 %), purple (96.00±0.38 %; p=0.03) and black (96.13±0.42 %; p=0.04) produced significant reduc-tions in SpO₂ readings. In contrast, none of the tested colors significantly affected the SpHb or PI values (p>0.05). PVI significantly declined with purple polish compared to the control (21.60±1.68 % vs. 32.87±4.08 %; p=0.01). Conclusion: Dark-colored nail polishes, specifically purple and black, can lead to statistically significant underestimation of SpO₂. Furthermore, purple polish may interfere with the accuracy of PVI. However, the reliability of non-invasive SpHb and PI measurements ap-pears to be unaffected by the presence of nail polish.