DAANCE Managing Systemic Diseases 5

Question 1

A patient with severe COPD (FEV1 <35% predicted) presents for sedation. Which supplemental oxygen approach is most appropriate?

Accepted Answer

Titrated low-flow oxygen at 1–2 L/min via nasal cannula

Answer

Low-flow titrated oxygen (1–2 L/min) maintains adequate SpO2 while minimizing the risk of suppressing the hypoxic ventilatory drive in severe COPD patients.

Question 2

Which electrolyte abnormality most commonly associated with chronic diuretic use can predispose a sedated patient to cardiac dysrhythmias?

Accepted Answer

Hypokalemia

Answer

Hypokalemia from chronic diuretic use increases cardiac membrane excitability, predisposing patients to ventricular dysrhythmias during sedation.

Question 3

A patient with Addison's disease is undergoing moderate sedation for a lengthy dental procedure. What supplemental management is required?

Accepted Answer

Stress-dose corticosteroid supplementation

Answer

Patients with adrenal insufficiency cannot mount a cortisol stress response and require supplemental corticosteroids to prevent an adrenal crisis during stressful procedures.

Question 4

A patient with obstructive sleep apnea (OSA) is sedated with benzodiazepines. What is the PRIMARY concern unique to this population?

Accepted Answer

Exaggerated upper airway collapse and apnea

Answer

OSA patients have anatomically and physiologically compromised upper airways; benzodiazepine-induced muscle relaxation significantly worsens upper airway obstruction and apnea.

Question 5

In a patient with cirrhotic liver disease, which pharmacokinetic change is most clinically significant when dosing sedatives?

Accepted Answer

Decreased hepatic first-pass metabolism causing elevated drug levels

Answer

Cirrhosis significantly reduces hepatic metabolic capacity and decreases plasma proteins, leading to elevated free drug levels and prolonged sedative effects.

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE - Dental Anesthesia Assistant National Certification Examination Practice Test

DAANCE Managing Systemic Diseases 5