What is the best reasoning for the crackles on auscultation?

A patient with a history of peptic ulcer disease would be MOST likely to have what in his or her past medical history?

Conducting a thorough assessment of the scene, identifying all injured or ill patients, and categorizing them by severity of injury is the responsibility of:

Slow GI bleeding distal to the ligament of Treitz would MOST likely result in:

An adult patient complains of weakness. Assessment reveals pedal and sacral edema with moderate jugular venous distension. The paramedic should suspect: 

A patient presents with a BP of 70/40, pulse of 180, and responds only to deep pain. The EKG monitor shows a narrow complex tachycardia. You should:

Order the phases of the cardiac action potential, starting with the resting membrane potential. 

Which of the following would be most harmful to a patient who is undergoing intubation?

 A patient with an asthma exacerbation has diffuse wheezing in all lung fields. This is most likely explained by:

The following ECG is obtained from a conscious elderly diabetic patient with general weakness. The paramedic should first: