Emergency Medical Technician (EMT) Intermediate Practice Exam

Which situation would contraindicate the use of a LMA?

1. Patients who are pregnant

2. Patients with history of asthma

3. Patients who are morbidly obese

4. Patients with minor injuries

The correct answer is: Patients who are morbidly obese

The use of a Laryngeal Mask Airway (LMA) is contraindicated in certain circumstances due to anatomical or physiological considerations. In the case of a patient who is morbidly obese, the airway anatomy can be significantly altered, making it more difficult to properly position the LMA or to ensure a proper seal. Morbid obesity is associated with increased neck circumference, which can lead to difficulties with airway management and an increased risk of airway obstruction. Furthermore, these patients often have a higher risk for respiratory complications and may have reduced lung volumes, which can complicate the use of certain airway devices. In contrast, while patients who are pregnant, have a history of asthma, or have minor injuries might require specific considerations, they do not inherently present the same level of anatomical challenge that a morbidly obese individual does. The impact of obesity on airway management is a well-recognized concern in emergency medical practice.