which of the following infant behaviors demonstrates the concept of object permanence

NCLEX-PN

NCLEX-PN Quizlet 2023

1. Which of the following infant behaviors demonstrates the concept of object permanence?

A. The infant cries when his mother leaves the room.
B. The infant looks at the floor to find a toy that he was playing with and dropped.
C. The infant picks up another toy after the one he was playing with rolls under the couch.
D. The infant participates in a game of patty-cake.

Correct answer: B

Rationale: Object permanence occurs when the infant learns that something or someone still exists even though they might not be able to see it or them. This typically develops between 9 and 10 months of age. The correct answer, 'The infant looks at the floor to find a toy that he was playing with and dropped,' demonstrates object permanence as the infant understands that the toy still exists even though it is temporarily out of sight. Choices A and C do not directly relate to object permanence as the behaviors described do not necessarily indicate an understanding of objects existing when out of sight. Choice D is incorrect as participating in a game of patty-cake does not involve demonstrating object permanence. Peek-a-boo is a more suitable example of a game that demonstrates object permanence, as the infant continues to look for the hidden face, understanding that it still exists even though temporarily unseen.

2. A client goes to the Emergency Department with acute respiratory distress and the following arterial blood gases (ABGs): pH 7.35, PCO2 40 mmHg, PO2 63mmHg, HCO3 23, and oxygenation saturation (SAO2) 93%. Which of the following represents the best analysis of the etiology of these ABGs?

A. tuberculosis (TB)
B. pneumonia
C. pleural effusion
D. hypoxia

Correct answer: D

Rationale: A combined low PO2 and low SAO2 indicates hypoxia. The pH, PCO2, and HCO3 are normal. ABGs are not necessarily altered in TB or pleural effusion. In pneumonia, the PO2 and PCO2 might be low because hypoxia stimulates hyperventilation, but the best analysis in this case is hypoxia due to the combination of low PO2 and low SAO2.

3. A client has been diagnosed with Disseminated Intravascular Coagulation (DIC) and transferred to the medical intensive care unit (ICU) following an acute bleeding episode. In the ICU, continuous Heparin drip therapy is initiated. Which of the following assessment findings indicates a positive response to Heparin therapy?

A. increased platelet count
B. increased fibrinogen
C. decreased fibrin split products
D. decreased bleeding

Correct answer: B

Rationale: Effective Heparin therapy should halt the process of intravascular coagulation, leading to increased availability of fibrinogen. Heparin interferes with thrombin-induced conversion of fibrinogen to fibrin. Therefore, an increased fibrinogen level indicates a positive response to Heparin therapy. While increased platelet count and decreased bleeding are positive outcomes, the specific indicator for Heparin therapy response is the increase in fibrinogen level. Decreased fibrin split products would also be a positive response, but an increase in fibrinogen directly reflects the impact of Heparin therapy.

4. Which of the following individuals is at the highest risk for suicide?

A. 76-year-old widow with chronic renal failure
B. 19-year-old with new SSRI therapy
C. 28-year-old post-partum crying weekly
D. 50-year-old client with obsessive-compulsive disorder (OCD) and depression

Correct answer: A

Rationale: The correct answer is the 76-year-old widow with chronic renal failure. Elderly individuals with chronic diseases, especially men, are at very high risk for suicide. The other choices, although they may be vulnerable populations, do not carry as high a risk for suicide. The 19-year-old with new SSRI therapy may actually have a lower risk as they are receiving treatment. The 28-year-old post-partum individual is experiencing a common emotional response after childbirth, which is not necessarily indicative of a high suicide risk. The 50-year-old with OCD and depression is at risk but not as high as elderly individuals with chronic illness.

5. The nurse is caring for a client with hyperemesis gravidarum. What is the most likely electrolyte imbalance?

A. Hypocalcemia
B. Hypomagnesemia
C. Hyponatremia
D. Hypokalemia

Correct answer: D

Rationale: In hyperemesis gravidarum, where the client experiences severe nausea and vomiting, the most likely electrolyte imbalance is hypokalemia. Potassium is abundant in the stomach, and excessive vomiting leads to potassium loss. Hypocalcemia (Choice A) is not typically associated with hyperemesis gravidarum. Hypomagnesemia (Choice B) and Hyponatremia (Choice C) are less likely to occur compared to hypokalemia in this condition.