Unless you are to have continuous monitoring, the probe will be removed after the test. For example, if you plan to apply the oximeter to your finger, it's important that you remove anything that absorbs light (such as dried blood or nail polish) to avoid false low readings. The cold can cause poor perfusion, or blood flow, which in turn can lead the oximeter to make an error in its reading. Make sure the finger, ear, or forehead is room-temperature or slightly warm before beginning the procedure. High levels of ambient light, such as overhead lights, phototherapy lights and infrared warmers, can blind the light sensor and give you an inaccurate reading. Troubleshoot by reapplying the sensor or shielding the sensor with a towel or blanket. This will reduce transmission of microorganisms and body secretions. Probes are usually placed on the finger. Turn the oximeter on.  Probes can also be placed on the earlobe and forehead, although research suggests that the earlobe is not a reliable site for the measurement of oxygen saturation.  If a finger probe is used, the hand should be rested on the chest at the level of the heart rather than the affixed digit held in the air (as patients commonly do). This helps to minimize any motion.   Minimize movement. The most common cause of inaccurate oximeter readings is excessive movement. One way to make sure that motion isn't affecting the reading is to check that the displayed heart rate matches the heart rate when you check it manually. The two rates should be within 5 beats/minute of each other. Your oxygen saturation level and pulse rate are displayed in seconds on a lighted display screen. A range of 95% to 100% is generally considered normal. If your oxygen level drops below 85%, you should seek medical attention. Print out readings, and/or download them onto a computer if your oximeter has this capability. If you believe that your oximeter has given an imprecise or inaccurate reading, try the following:  Make sure there is no interference (environmental or on the probe site directly). Warm and rub skin. Apply a topical vasodilator that will help open the blood vessels (e.g., glyceryl trinitrate (GTN) cream). Try an alternative probe site. Try a different probe and/or oximeter. If you're still uncertain whether the oximeter is functioning properly, consult your physician.
حدد إن كنت تحتاج قراءة واحدة أم إلى متابعة مستمرة للقراءات. قم بإزالة أي شيء من شأنه وأن يمتص الضوء من مكان القياس. تأكد من تدفئة مكان وضع المجسّ. يجب عزل كل مصادر التداخل البيئي. اشطف يديك. تحقق من المجسّات. قراءة القياس. تابع تسجيل القراءات. إصلاح أي خلل في القراءات.