Anesthetic Equipment and Monitoring — Flashcards

Flashcard 71: Which specialized catheter utilizes electrodes to sense the electrical activity of the diaphragm (Edi) to trigger and control mechanical ventilation?

Answer: NAVA catheter (Neurally Adjusted Ventilatory Assist)

Flashcard 72: Administration of **methylene blue** will lead to a falsely _____ reading on pulse oximeter

Answer: decreased (falsely low)

Extra: Pulse oximetry accuracy and interferences: 1. **Anemia:** Does not affect SpO2 accuracy until Hb < 5 g/dL. 2. **Methylene blue:** Causes a significant false decrease in SpO2. 3. **Carboxyhemoglobin:** Causes a falsely high SpO2 (the oximeter sees CO-Hb as Oxy-Hb). 4. **Methemoglobin:** SpO2 tends toward 85% ("magic number"). 5. **Nail polish:** Blue, black, and green can cause falsely low readings.

Flashcard 73: Can medications, blood products, and fluids be administered through the intraosseous (IO) route?

Answer: Yes. Any medication, blood product, or fluid that can be given intravenously (IV) can also be administered via the IO route.

Extra: The intraosseous (IO) route is a safe and effective alternative for the administration of fluids and medications in both pediatric and adult emergencies when rapid intravenous access is not possible. Plasma concentrations and onset of action are comparable to the IV route.

Flashcard 74: Flowmeter is a part of the _____ pressure system of the anesthesia machine

Answer: low

Flashcard 75: _____ is a rapid real-time bedside test that will test the entire coagulation pathway

Answer: Thromboelastography

Flashcard 76: Oxygen flush valve is a part of the _____ pressure system of the anesthesia machine

Answer: intermediate

Flashcard 77: Shock/Hypotension will lead to a falsely _____ in reading on pulse oximeter

Answer: decreased

Flashcard 78: Common gas outlet is a part of _____ pressure system of the anesthesia machine

Answer: low

Flashcard 79: Mapleson _____ circuit is also referred to as Magills

Answer: A

Flashcard 80: Eustachian tube (ET) catheterization is done using an ET catheter and _____ bag

Answer: Politzer