Which of the following situations could cause an excessive negative pressure on the right atrium during ECMO? 1. Hypovolemia 2. Insufficient height of the patient 3. A kink in the cannula or circuit tubing 4. Hypervolemia
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
Servo regulation is commonly used as a safety mechanism to prevent excessive negative pressure on the right atrium in the presence of inadequate volume. This situation can result from hypovolemia, insufficient height of the patient (poor gravity-assisted flow), or a kink in the can-nula or circuit tubing.
You might also like to view...
Louise arrived at the hospital in labor. She is 39 weeks and six days into her pregnancy. She started having contractions two hours ago and on arrival at the hospital, the contractions are approximately three minutes apart. She has quickly placed in bed and examined. She is 9 centimeters dilated, and her bag of water ruptures spontaneously. She soon delivers a 6 lb. 4 oz. healthy baby girl
Dx: Precipitate labor; 39 weeks pregnant; NSVD. First-listed diagnosis: ________ Secondary diagnoses:
Universal curettes are designed to be used ____________
a. in specific areas of the mouth only b. throughout the mouth c. interproximally d. none of the above