What is the compression to ventilation ration for single rescuer adult CPR?

Spina bifida is most accurately defined as:

Approximately 2 weeks following a total hip replacement, a 70-year-old female complains of a sudden onset of dyspnea and pleuritic chest pain. Your assessment reveals perioral cyanosis, blood-tinged sputum, and wheezing to the base of her right lung. As your partner applies high-flow oxygen, the patient states that she has a history of hypertension. You should be most suspicious of:

Descent of the fetal head to the pelvic inlet (lightening) occurs:

Which of the following head-injured patients should be ventilated at a rate of 20 breaths/min with a bag-mask device and 100% oxygen?

You are dispatched to a local nightclub for a patient who has been stabbed. After arriving at the scene and ensuring your safety as well as your partner’s, you find the patient sitting on the ground. He is conscious, screaming in pain, and attempting to control bright red blood that is spurting from his groin area. After taking standard precautions, you should:

Which of the following statements regarding the dermal layer of the skin is correct?

Drugs that attach to a receptor and counteract the effects of something else are called:

Which cranial nerve is responsible for constriction of the pupil and accommodation of the lens?

When immobilizing a patient onto a long backboard, it is important to: