EMT Airway and Breathing Practice Test

Question 1

What is the maximum flow rate for a Nasal Cannula?

Accepted Answer

6 lpm

Answer

A nasal cannula is designed to deliver low-flow oxygen, typically providing 24-44% oxygen concentration. Its maximum recommended flow rate is generally 6 liters per minute (LPM). Beyond this rate, the effectiveness of oxygen delivery does not significantly increase, and it can cause discomfort and dryness to the nasal passages.

Question 2

What is the following device ?﻿A device designed to facilitate the blind intubation of a patient. It consists of a cuffed double-lumen tube with one blind end. Inflation of the cuff allows the device to function as an endotracheal tube and closes off the esophagus, allowing ventilation and preventing reflux of gastric contents.

Accepted Answer

Dual Lumen Airway

Answer

The description accurately defines a dual lumen airway, such as a Combitube or King LT airway. These devices are designed for blind insertion and feature two lumens and cuffs, one to seal the esophagus and the other to allow ventilation, often into the trachea or pharynx. This design facilitates effective ventilation and helps prevent gastric insufflation and aspiration in emergency situations.

Question 3

In order to provide Oxygen Therapy at "100%" what should the flow rate be?

Accepted Answer

12-15 LPM

Answer

To provide the highest possible concentration of oxygen, often referred to as '100%' (though typically 90-100% with proper seal), a non-rebreather mask is used with a flow rate of 12-15 liters per minute (LPM). This high flow rate ensures the reservoir bag remains inflated, preventing the patient from rebreathing exhaled air and maximizing the delivery of supplemental oxygen.

Question 4

What airway opening maneuver should be used on a man that has fallen off a ladder and is suffering from respiratory distress?

Accepted Answer

Jaw Thrust

Answer

For a patient who has fallen off a ladder and is in respiratory distress, there is a high suspicion of spinal injury. The jaw thrust maneuver is the preferred airway opening technique in trauma patients because it minimizes movement of the cervical spine. Unlike the head-tilt, chin-lift, the jaw thrust helps open the airway without hyperextending the neck, thus reducing the risk of further spinal cord damage.

Question 5

A device that delivers a specific amount of medication to the lungs, in the form of a short burst of aerosolized medicine that is inhaled by the patient is known as a(n)?

Accepted Answer

Metered Dose Inhaler

Answer

A Metered Dose Inhaler (MDI) is a handheld device that delivers a precise, pre-measured dose of medication to the lungs in the form of an aerosolized mist. The patient activates the device while inhaling, allowing the medication to reach the lower airways. This method is commonly used for bronchodilators and corticosteroids to treat respiratory conditions like asthma and COPD.

NREMT Practice Test

NREMT Practice Test

EMT Airway and Breathing Practice Test