Ccrn exam 2024 newest verified questions and correct detailed answers with rationales already graded a

Ccrn exam 2024 newest verified questions and correct detailed answers with rationales already graded aCCRN EXAM 2024 NEWEST VERIFIED QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES ALREADY GRADED A+. An 18 year old is admitted with a history of syncopal episode at the mall and has a history of an eating disorder. The nurse notes a prolonged QT on the 12-lead EKG and anticipates a reduction in an electrolyte to be the cause. Which of the following is LEAST likely to cause this patient's problems? (A) sodium (B) magnesium (C) potassium (D) calcium - ANSWER- (A) Abnormal sodium does NOT cause QT prolongation. In contrast, a low magnesium, potassium, or calcium, may cause QT prolongation and may result in TORSADES DE POINTES ventricular tachycardia and, if self-limiting, transient syncopal episodes. On the third day after admission for acute MI, a 67 year old male complains of chest pain and develops a fever. The pain is worse with deep inspiration and is relieved when he leans forward. There are nonspecific ST changes in the precordial leads of the EKG. The nurse anticipates that the patient will most likely need treatment for: (A) thoracic aneurysm (B) Dressler's syndrome (C) reinfarction harry (D) pleuritis - ANSWER- (B) The pain described in the scenario is typical of the pain caused by pericarditis. Dressler's syndrome is the pericarditis that may result after an acute MI. A patient is admitted to the CCU after a PCI with stent. Femoral sheath is in place, site is dry with no hematoma. He suddenly complains of severe back pain. Neck veins are flat with head of bed 30 degrees, heart sounds are normal. Vital signs are BP 78/48, HR 124 and RR 26. What should the nurse suspect? (A) cardiac tamponade (B) retroperitoneal bleeding (C) coronary artery dissection (D) acute closure of the stented coronary artery - ANSWER- (B) Retroperitoneal bleeding may cause signs of hypovolemia and hypovolemic shock as described in the scenario. It may be a complication of a PCI if the femoral artery is the access site during the procedure. Only this problem results in severe back pain; none of the other 3 choices results in back pain Your patient admitted with an NSTEMI develops acute shortness of breath, recurrence of chest pain, and a loud systolic murmur at the apex of the heart. Which of the following has most likely occurred? (A) the patient has developed acute mitral valve regurgitation (B) the patient has developed acute infarction (C) the patient has developed acute mitral wave stenosis harry (D) the patient has developed acute ventricular septal defect - ANSWER- (A) The location of the murmur, at the apex of the heart (midclavicular, 5th ICS), is one clue to this answer. In addition, regurgitation occurs when the valve should be closed and the mitral valve should be closed during systole. Mitral stenosis, choice (C), occurs when the mitral valve is open. Additionally, mitral stenosis cannot be acute, it develops gradually. A patient has just returned from the OR after insertion of a VVI pacemaker. In order to assess function of this pacemaker accurately, the nurse needs to understand that: (A) both atrium and ventricle are paced and sensed and may either inhibit or pace in response to sensing (B) the ventricle is paced, ventricular activity is sensed and pacing is inhibited in response to ventricular sensing. (C) both the atrium and ventricle are paced, but only ventricular pacing can be inhibited by a sensed intrinsic ventricular impulse. (D) the ventricle is paced in response to a sensed intrinsic atrial impulse or inhibited by a sensed intrinsic ventricular impulse. - ANSWER- (B) the first letter indicates chamber paced (ventricle). The second letter indicates chamber sensed (ventricle). The third letter indicates the response to sensing (inhibited in response to sensing).