The nurse plans discharge teaching for a patient with chronic heart failure who has prescriptions for digoxin (Lanoxin) and hydrochlorothiazide. Appropriate instructions for the patient include

Correct Answer: C

Rationale: Nausea is an indication of digoxin toxicity and should be reported so that the provider can assess the patient for toxicity and adjust the digoxin dose, if necessary. The patient will need to include potassium-containing foods in the diet to avoid hypokalemia. Patients should be taught to check their pulse daily before taking the digoxin and if the pulse is less than 60 beats/min, to call their provider before taking the digoxin. Diuretics should be taken early in the day to avoid sleep disruption.

Correct Answer: D

Rationale: Pulmonary veins (from lungs to left atrium) and umbilical veins (in fetus from placenta) carry oxygenated blood; cephalic veins do not.

Correct Answer: A

Rationale: Lead III uses the left arm as the negative electrode and the left leg as the positive electrode.

Correct Answer: C

Rationale: Subendocardial flow decreases more during systole due to greater compression by the contracting myocardium.

Correct Answer: B

Rationale: Neurogenic shock decreases total peripheral resistance (TPR) due to loss of sympathetic tone.