CA-1 Anesthesia Intro Past Exam

CA-1 Anesthesia Intro Past Exam QUESTIONS AND ANSWERS 100% score (reupdated 2025)

Standard 1: Qualified anesthesia personnel shall be present

in the room throughout the conduct of all general/regional anesthetics, and monitored anesthesia care.

Standard 2: During all anesthetics, the patients *oxygen,

ventilation, circulation, and temperature* shall be *continuously* monitored. - Correct Answers ✅Standards for basic anesthetic monitoring?

OXYGENATION

• Continuous pulse ox
• If using anesthesia machine, inspired gas FiO2 analyzer =

low O2 alarm should also be on

VENTILATION

• Capnography (with expired Vt)

CIRCULATION

3. EKG: minimum 3 lead; 5 leads if any cardiac concerns

4. BP monitoring: Minimum cycle Q5min

- At least one *continuous* circulatory assessment: pulse ox

tracing, A-line tracing, palpable pulse, auscultation, doppler.

TEMPERATURE 1 / 4

CA-1 Anesthesia Intro Past Exam QUESTIONS AND ANSWERS 100% score (reupdated 2025)

• Temperature probe (if clinically significant changes in body

temp are anticipated) - Correct Answers ✅5 Standard monitoring devices that should be employed in EVERY anesthesia case?

Continual: Repeated regularly and frequently in steady rapid

succession.(i.e. the pts blood pressure shall be checked continually every

• min)

Continuous: Prolonged without any interruption at any time

(i.e. EKG monitoring shall be continuously displayed) -

Correct Answers ✅ITE tip:

• Continuous vs continual?

85%.

• Commonly, the PaO2 in these patients will be normal; when

SaO2 is > 85%, you get a *falsely low* pulse ox reading.

• If the true O2 sat is actually < 85%, you will get a *falsely

high * pulse ox reading. - Correct Answers ✅O2 sats in patients with methemoglobinemia is typically ___ %? 2 / 4

CA-1 Anesthesia Intro Past Exam QUESTIONS AND ANSWERS 100% score (reupdated 2025) *Topical Prilocaine/benzocaine* *Metoclopramide* *Dapsone* *Nitric oxide* *Nitroglycerine* - Correct Answers ✅Medications that cause methemoglobinemia?Methylene blue Vitamin C (only in G6PD deficiency) - Correct Answers ✅Two treatment options for methemoglobinemia?The pulse ox will read *falsely high* given the similar absorption of carboxy-hemoglobin to O2Hb.

• At 50% COHb, pulse ox may read 95%, despite a low SaO2

of 50% on ABG. - Correct Answers ✅Danger of using pulse- ox in patients with carbon monoxide poisoning? 3 / 4

CA-1 Anesthesia Intro Past Exam QUESTIONS AND ANSWERS 100% score (reupdated 2025)

Community: smoke inhalation

*OR: volatile anesthetic degradation, desiccated

baralyme/soda lime.* - Correct Answers ✅Common cause of carbon monoxide poisoning in the Community? In the OR?100% FiO2 Hyperbaric oxygen - Correct Answers ✅Treatment for carbon monoxide poisoning?Causes falsely HIGH O2 sat readings.

• *ABG and VBG will show similar PO2 values due to

uncoupling of oxidative phosphorylation.* Hgb remains oxygenated, but tissues cannot use it.

• *Lactate* will be *very high* - Correct Answers ✅Cyanide

toxicity effects on pulse-ox readings?Sodium nitroprusside (prolonged use) Smoke inhalation - Correct Answers ✅Causes of cyanide toxicity?

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