A. Ventricles contract simultaneously, but the myocardial layer of the left ventricle is significantly thicker than that of the right ventricle. Compare the volume of blood and the pressure with which blood is ejected from the two ventricles during ventricular systole?

2. During a heart transplant, the vagus nerve is severed, so no parasympathetic impulses reach the transplanted heart. In the absence of therapeutic intervention, how would the heart rate of recently transplanted heart compare with the normal heart rate (unless or until nerve regrowth occurs)

3.Explain what makes the accumulation of fluid in the pericardial space a life-threatening situation

4. Explain the importance of Purkinje fibers

Mr. will, a 67-year-old patient, is postoperative day 2 after a coronary artery bypass graft operation to revascularize his coronary arteries that were significantly blocked. he has a midline incision of his chest and a 7-inch incision on the inner aspect of his right thigh where a saphenous vein graft was harvested and used to vascularize the blocked coronary artery. the surgeon ordered oxycodone 5 mg every 4 hours prn for moderate pain and oxycodone 10 mg every 4 hours prn for severe pain. a. considering the patient's age, what medication administration considerations should the nurse incorporate into the pain management plan and why? b. what measures should the nurse provide the patient to prevent adverse effects of analgesic agents from occurring? c. what nonpharmacologic pain management methods should the nurse teach to mr. will to assist with pain management?