You are preparing to cardiovert a patient who has a perfusing ventricular tachyarrhythmiaand hypotension. Why is it important to turn on the synchronizing circuit of the defibrillator?

In lead II you notice inverted P waves with shortened P-R intervals. The QRS complex isnormal. What type of dysrhythmia should you suspect?

The monitor shows an atrial rate of 60, a ventricular rate of 46. There is no relationshipbetween the P waves and the QRS complexes. What type of heart block is this?

Which of the following dysrhythmias presents a significant risk for emboliccerebrovascular accident (CVA)?

The development of Q waves on a 12 lead ECG tracing suggests

What is an early effect of a tension pneumothorax on the heart?

What does the following 12 lead ECG indicate? 7471.jpg

A 35-year-old man is admitted to the hospital and has been confirmed to have pneumococcal pneumonia. What test would it be wise to order at this time?

A 26 year-old seasonal worker from South America came to the ER with a history of a dry, hacking blood-tinged cough, fever, chills, and loss of appetite. The chest x-ray showed cavitary lesion in the right upper lobe. After a week in the hospital, the sputum culture shows the present of acid-fast stained organisms. Which of the following medications would you recommend for this patient at this time?1. Ceftizoxime2. Isoniazid3. Rifampin4. Ethambutol

In what clinical scenario will a Gram stain and culture’s value be diminished?