Effect of onychomycosis on pulse oximeter

Objective Onychomycosis causes nail thickness and discoloration of the dorsum of the nail plate. This study was aimed to investigate the effect of discoloration and nail thickness associated with onychomycosis on pulse oximetry measurement. Materials and methods The involvement degree of onychomycosis was determined using onychomycosis severity index (OSI). Two different measurements were recorded by pulse oximetry. The first one was from the nail with onychomycosis, and the second one was from the normal nail of the same hand. Results A total of 93 onychomycosis cases were included in the study. When SpO2 values of white nail color were measured, it was statistically significant higher in the onychomycosis group than the control (P