Which type of respirator is required to prevent exposure to tuberculosis?

You have been called for a 42-year-old male complaining of back pain. On scene, the man tells you that he was lying on the floor when his 5-year-old son unexpectedly jumped feet first onto his back. He gives a medical history of high blood pressure and asthma, for which he takes medications. As you assess the patient, which one of the following signs or symptoms provides the greatest indication

that the patient has sustained an abdominal injury? A) Bruise to his back B) Mild nausea C) Blood in his urine D) Shortness of breath

Atrial fibrillation can be interpreted by noting:

A) PR intervals that vary from complex to complex. B) an irregularly irregular rhythm and absent P waves. C) a regularly irregular rhythm with abnormal P waves. D) the presence of wide QRS complexes and a rapid rate.