This vessel flow pattern is commonly known as the tango step. What part of the cardiac cycle is identified at the arrow?

A patient was mechanically vented for 7 days for community acquired pneumonia (CAP) and was extubated 2 days ago. His vitals and labs have been stable, but he failed the swallow evaluation by the speech therapist. What is the most appropriate intervention?

What are the two major branches of the left coronary artery?

An unrestrained driver presents to the ED after a head-on motor vehicle crash with airbag deployment. The patient is awake and alert. GCS = 15. Vital signs: heart rate 94, blood pressure 138/78, respiratory rate 28, and SpO2 99% on room air. Chest wall is symmetrical, but tender to palpation. Breath sounds are diminished throughout related to shallow respirations. Chest x-ray is negative for any acute changes. Initial management should include which of the following?

The gold standard for the diagnosis of OSA-hypopnea syndrome is:

A 42-year-old obese female with OSA, diabetes mellitus, and hypertension is admitted for community-acquired pneumonia. After multiple attempts, she is emergently intubated with ET tube size 8.5. She has been intubated for 7 days and today she has tolerated the spontaneous breathing trial. What is the next step?

At about the 4th lumbar vertebra, near the level of the umbilicus, the abdominal aorta divides into which right and left vessels?

What does the sonographic finding indicate about the vessel?

What is the wall segment located at the yellow arrow? _______ What is the wall segment located at the blue arrow? _______

A 64-year-old female presents with a 5-day history of exertional dyspnea and orthopnea. Her medical history is significant for SLE and diastolic heart failure. Chest X-ray reveals significant bilateral pleural effusions. The decision is made to perform a thoracentesis.  Which laboratory value would indicate that the effusions are a result of her known diagnosis of SLE?