Top positive review
822 people found this helpful
Big surprise - in a good way
on May 21, 2013
I decided to take a chance and buy the cheapest one on Amazon. I'm an ophthalmologist and performed 34 cataract surgeries today. I asked my preop staff as well as the nurse anesthetists to directly compare this new unit to our preexisting, expensive medical quality units on patients all during the day. Whether at the high range (97-100% saturation), mid range, or lower range (as low as 83% saturation) there was excellent correlation between the units. And the CMS 50DL actually responded FASTER to rapidly changing conditions than our expensive models. We were all shaking our heads in amazement by the end of the day. I bought it so that my son and I can fly our small plane over the Rocky Mountains this summer on oxygen and make sure we're not hypoxic. This lightweight, accurate fingertip unit will be perfect for our needs.
Update: Flew my plane at 14,000 feet with a bottle of oxygen last weekend. The pulse oximeter did very well with a fast response time. Helped me discover my blood oxygen had fallen to 84% saturation before I started breathing oxygen. I'm still VERY happy with this unit.
Second update: 9/5/14 After two summers of flying across the Rockies the unit is still in perfect working order. I can't say I use it very often, but when I do it's still 100% dependable and reliable.