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The nurse needs to administer an IM injection of 2.4 million units of penicillin G. it is supplied in a vial of 5,000,000 units of powder for injection. Instructions state to dilute with 8 mL of sterile water. How manu mL should the nurse draw up?
- A. 2.6 mL
- B. 4.1 mL
- C. 3.8 mL
- D. 4.4 mL
Correct Answer: B
Rationale: To administer an IM injection of 2.4 million units of penicillin G, the nurse should first reconstitute the penicillin powder with sterile water as per the instructions. The vial contains 5,000,000 units of the powder and when diluted with 8 mL of sterile water, the resulting concentration would be:
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Hemodynamic monitoring by means of a multilumen pulmonary artery catheter can provide detailed information about:
- A. Preload
- B. Afterload
- C. Cardiac output
- D. All of the above
Correct Answer: D
Rationale: A multilumen pulmonary artery catheter, also known as a Swan-Ganz catheter, is used for advanced hemodynamic monitoring. It is inserted through a central line and positioned in the pulmonary artery to provide detailed information about various hemodynamic parameters including preload, afterload, and cardiac output.
A medical student observes that infants cry in response to another infant's cry. The MOST appropriate answer is that it represents
- A. an early sign of empathy development
- B. a sign of good hearing
- C. a startle reflex
- D. an early sign of fear development
Correct Answer: A
Rationale: Infants crying in response to others may indicate early empathy development.
Children with secondary nocturnal enuresis may have
- A. UTI
- B. diabetes mellitus
- C. diabetes insipidus
- D. psychosocial stressor
Correct Answer: D
Rationale: Psychosocial stressors can trigger secondary nocturnal enuresis after a period of dryness.
A neonate, who was delivered by Cesarean section for a breech presentation, is being examined in the neonatal nursery. For which of the following complications should the nurse carefully assess the baby?
- A. Developmental dysplasia of the hips (DDH)
- B. Legg-Calve-Perthes (LCP)
- C. Duchenne muscular dystrophy (DMD)
- D. Slipped capital femoral epiphysis (SCFE)
Correct Answer: A
Rationale: A neonate delivered by Cesarean section for a breech presentation is at higher risk for developmental dysplasia of the hips (DDH). Breech presentation, especially frank breech, increases the chance of hip instability and DDH due to the positioning of the legs in utero. DDH is a condition where the ball and socket joint of the hip does not properly form, leading to potential dislocation of the hip joint. It is important for the nurse to carefully assess the neonate for signs of hip dysplasia, such as limited hip abduction or asymmetry in the thigh folds, to facilitate early detection and intervention for optimal outcomes. Legg-Calve-Perthes (LCP), Duchenne muscular dystrophy (DMD), and slipped capital femoral epiphysis (SCFE) are not specifically related to breech delivery, and therefore, are less likely to be
Hemangiomas are the most common benign tumors of infancy, occurring more in full-term infants. Of the following, the most common risk factor of development of hemangioma is
- A. male infant
- B. female infant
- C. infant of diabetic mother
- D. infant delivered by cesarean section
Correct Answer: B
Rationale: Female infants are at higher risk for developing hemangiomas.