Certified Registered Nurse Anesthetist (CRNA) Practice Exam

Which LMA and bronchoscope would be suitable for patients weighing between 10 to 20 kilograms?

1. Number 2 LMA and 3 mm bronchoscope

2. Number 3 LMA and 4 mm bronchoscope

3. Number 4 LMA and 5 mm bronchoscope

4. Number 5 LMA and 6 mm bronchoscope

The correct answer is: Number 4 LMA and 5 mm bronchoscope

For pediatric patients weighing between 10 to 20 kilograms, the appropriate choice is a Number 4 Laryngeal Mask Airway (LMA) and a 5 mm bronchoscope. The size of the LMA selected for pediatric patients is crucial, as it needs to match the anatomical and physiological needs of the patient. A Number 4 LMA is designed for children in this weight range, ensuring an effective seal in the airway while allowing for adequate ventilation. Using the correct size decreases the risk of complications and improves airway management. The bronchoscope size is also significant in this context. A 5 mm bronchoscope is appropriate for navigating the airways of patients in this weight category, providing enough flexibility and a suitable lumen size for procedures such as suctioning or diagnostic bronchoscopy without causing trauma to the airway. By combining a Number 4 LMA with a 5 mm bronchoscope, the chosen sizes align with the physiological parameters of pediatric patients, ensuring effective airway management and minimizing the risk of injury or complications during procedures.