Laboratory Values & Diagnostics MCQs for Nursing Exams

Answer: B. 27–40 mm Hg

Paediatric ABG – pH 7.35 to 7.45 (infant and child); PaCO2 35 to 45 mm Hg (infant 27 to 40); PaO2 75 to 100 mm Hg.

Answer: B. Amylase and lipase

Pancreatic inflammation raises lipase and often amylase.

Answer: D. Creatinine clearance 23 mL/minute

Cisplatin is contraindicated and should not be given to patients with a creatinine clearance below 30 mL/min. The iron level is within normal limits and is not a contraindication of administering cisplatin. The ammonia level is also within normal limits, which is important to monitor as cisplatin should be used cautiously with hepatic impairment. BNP is used to measure the severity of heart failure; this value is within the normal range.

Answer: B. Apply the fetal heart monitor

244. Answer B is correct. Applying a fetal heart monitor is the appropriate action now. Preparing for a caesarean section is premature; placing the patient in Trendelenburg is also not an indicated action, and an ultrasound is not needed based on the finding. Therefore, answer B is the best answer, and answers A, C, and D are incorrect.

Answer: B. Cavities caused by caseation

Cavities are evident on radiograph. Necrotic lung tissue may liquefy, leaving a cavity (cavitation), or ANSWERS AND RATIONALES granulose tissue can surround the lesion, become fibrous, and form a collagenous scar around the tubercle (Ghon tubercle). 1 This is determined by a positive reaction to a tuberculin skin test, not on radiograph; a skin test only determines the presence of antibodies; it does not confirm active disease. 2 This may be determined by a sputum culture, not by radiograph. 4 Microscopic primary infection may be so small it does not appear on a radiograph.