CEN practice exam 1 questions and answers with solutions 2025

A. The use of supplemental oxygen in normoxic patients has not been established. In patients with potential coronary artery syndrome, withholding of additional supplemental oxygen should be considered for those in the prehospital or in-patient hospital setting and the emergency department. - ANSWER A patient presents to the emergency department with chest pain and diaphoresis, and denies dyspnea. Vital signs are BP 148/70 mm Hg, HR 72 beats/minute, RR 18 breaths/minute, Sp02 98% on room air. Breath sounds are clear and equal. rlhe electrocardiogram shows an inferior wall ST segment elevation. You anticipate the following oxygen order. A. No supplemental oxygen at this time B. Nasal cannula at 6 L per minute C. Partial rebreather mask at 10 L per minute D. Nonrebreather mask at 15 L per minute C. Chest pain that radiates to both shoulders has a likelihood ratio of 7.1, and pain that radiates to the right shoulder has a stronger likelihood ratio of 2.9 of predicting acute COronary syndro compared with pain that radiates only to the left shoulder. - ANSWER A patient complains of chest pain, dyspnea, and diaphoresis. Which of the following assessment factors would indicate a possible diagnosis of acute coronary syndrome? A. Pleuritic chest pain B. Positional chest pain C. Chest pain that radiates to the shoulders, with pain in the right shoulder worse than pain in the left shoulder D. Pain reproducible with chest wall palpation D. Adrenal gland stimulation causes the adrenals to release two catecholamines: epinephrine and norepinephrine. Epinephrine increases heart rate and peripheral vasoconstriction and triggers glycogenolysis. - ANSWER Whic