In a healthy adult at rest, approximately how much time is required for the entire heart to depolarize?

Your patient is a 30-year-old female involved in a motorcycle crash. She was not wearing a helmet and struck her head on the pavement. She is unresponsive and has a blood pressure of 152/110 mmHg. Her pulse is 60 beats per minute and respirations are 8 breaths per minute and shallow. Which of the following is an appropriate intervention?

A) Apply a pressure dressing to her scalp lacerations. B) Hyperventilate at a rate of 24 breaths per minute using supplemental oxygen. C) Provide cervical spine immobilization. D) Elevate the legs.

Nine pieces of cartilage make up the larynx

Indicate whether the statement is true or false