The cardiac cycle begins with the firing of the ________ node, which appears as the P wave on the ECG

Which of the following represents the MOST correct technique for performing transillumination-guided intubation?

A) Place the patient's head in a hyperflexed position and insert the tube-stylet combination into the left side of the mouth. B) Grasp the lower jaw with your thumb and forefinger, displace it forward, and insert the tube-stylet combination in the midline of the patient's mouth. C) Hyperextend the patient's head, pull the jaw down, and insert the tube-stylet combination into the right side of the patient's mouth. D) Place the patient's head in a neutral position, displace the tongue with a tongue blade, and insert the tube-stylet combination in the midline of the mouth.

For a lateral cervicothoracic projection (Twining method), the

1. patient is placed in a lateral projection. 2. arm placed adjacent to the imaging table is elevated. 3. arm placed farther from the imaging table is positioned at a 90-degree angle with the body. 4. midsagittal plane is aligned parallel with the IR. a. 1 and 4 only b. 2 and 3 only c. 1, 2, and 4 only d. 1, 2, 3, and 4