Correct Answer: C

Rationale: A serum potassium level of 3.0 mEq/L is significantly low and indicates hypokalemia, which can lead to serious complications such as cardiac arrhythmias. Therefore, it is crucial for the nurse to report this finding promptly to the healthcare provider for immediate intervention. The other findings are not as critical in this situation. Gastric output of 100 mL in the last 8 hours may be expected in a patient with persistent vomiting. The shift intake of IV fluids and ice chips indicates fluid replacement, which is important but not as urgent as correcting electrolyte imbalances. A serum pH of 7.45 is within the normal range and does not indicate an immediate concern.

Correct Answer: A

Rationale: The correct answer is A because a low red blood cell count may indicate anemia, which could pose risks during surgery. Anemia can affect oxygen delivery to tissues, impacting wound healing and overall surgical outcomes. The other options, such as white blood cell count, weight gain, and urine specific gravity, are less critical for immediate surgical considerations. White blood cell count is more related to infection risk postoperatively rather than immediate surgical risk. Weight gain reflects good overall growth but does not impact the immediate surgical situation. Urine specific gravity is more indicative of hydration status rather than immediate surgical risk.

Correct Answer: C

Rationale: In pediatric basic life support, for an unresponsive infant who is not breathing normally, the correct action is to give two breaths that make the chest rise. This helps provide oxygen to the infant's body and is a crucial step in resuscitation efforts for infants in distress. Choices A, B, and D are incorrect. Palpating the femoral pulse or feeling the carotid pulse is not indicated in this scenario where the infant is unresponsive and not breathing. Delivering cycles of chest compressions and breaths is not the immediate action to take; the priority is to provide two breaths to help with oxygenation.

Correct Answer: C

Rationale: When assessing a child with acute glomerulonephritis (AGN), a common trigger to expect in the nursing history is a recent strep throat infection. AGN can be triggered by a streptococcal infection, leading to the deposition of immune complexes in the glomeruli. This finding is crucial as it helps identify a potential cause for the development of AGN in the child. Choices A, B, and D are incorrect as high blood cholesterol levels, increased thirst and urination, and recent DPT immunization are not directly associated with triggering acute glomerulonephritis in children.

Correct Answer: B

Rationale: Administering the scheduled dose is appropriate in this scenario. The nurse obtained an apical heart rate of 128 bpm, which is within the expected range for a 2-year-old child. Therefore, there is no immediate concern to withhold the scheduled dose of digoxin. Determining the pulse deficit is not necessary as the heart rate is appropriate. Calculating the safe dose range is not needed as the current dose is within the therapeutic range. Reviewing the serum digoxin level may be indicated later for monitoring but is not urgent based on the heart rate assessment. Administering the scheduled dose of digoxin is the correct action at this time.