امرأة عمرها ٥٢ سنة في العناية بعد عملية، واعية وتتكلم، ولونها وردي، والتنفس ١٦. قراءة جهاز التشبع على إصبعها متذبذبة وتعطي ٨٤٪ مع موجة ضعيفة. يداها باردتان من التكييف، وأظافرها مطلية بلون داكن. ما الإجراء الأنسب؟

A 52-year-old woman in ICU after surgery is alert, talking and pink with RR 16. The finger oximeter reading fluctuates around 84% with a poor waveform. Her hands are cold from the air conditioning and her nails have dark polish. What is the most appropriate action?

1. Ignore the reading because oximeters are unreliable
2. Raise oxygen to 15 L immediately
3. Call the arrest team
4. Warm the hand or move the probe, and remove the polish

Answer: D) Warm the hand or move the probe, and remove the polish. Cold, poor perfusion, nail polish and movement cause false readings. Assess the client first, improve the probe site, and check a blood gas if doubt persists.