ATI RN
Psychology 2301 Exam 1
1. Where is the site of chemical communication in the brain?
- A. Neuron
- B. Synapse
- C. Axon
- D. Dendrite
Correct answer: B
Rationale: The correct answer is B: Synapse. The synapse is the site where chemical communication occurs between neurons. Neurotransmitters are released from the axon terminal of one neuron, cross the synaptic cleft, and bind to receptors on the dendrites of the next neuron. Choice A, Neuron, is incorrect as it refers to the entire nerve cell. Choices C and D, Axon and Dendrite, are also incorrect as they are specific parts of a neuron and not the primary site of chemical communication.
2. A nurse is caring for a client who has the following laboratory results: potassium 3.4 mEq/L, magnesium 1.8 mEq/L, calcium 8.5 mEq/L, sodium 144 mEq/L. Which assessment should the nurse complete first?
- A. Depth of respirations
- B. Bowel sounds
- C. Grip strength
- D. Electrocardiography
Correct answer: Depth of respirations
Rationale: The correct answer is 'Depth of respirations.' In a client with electrolyte imbalances like low potassium (hypokalemia) and low magnesium (hypomagnesemia), respiratory changes, such as shallow respirations or respiratory muscle weakness, can occur and lead to respiratory compromise. Assessing the depth of respirations is crucial to evaluate respiratory function in this client. Bowel sounds, grip strength, and electrocardiography are also important assessments in different situations, but in this case, respiratory assessment takes priority due to the potential impact of electrolyte imbalances on breathing.
3. A client with leukemia is considered for a bone marrow transplant. Which principle of healthcare ethics is being practiced by minimizing harm to the client?
- A. Justice
- B. Beneficence
- C. Nonmaleficence
- D. Autonomy
Correct answer: C
Rationale: The correct answer is C: Nonmaleficence. Nonmaleficence is the ethical principle that focuses on avoiding harm to the patient. In this scenario, by considering a bone marrow transplant for the client with leukemia, healthcare professionals are practicing nonmaleficence by aiming to minimize harm. Choice A, Justice, pertains to fairness in the distribution of resources and decisions, which is not the primary focus in this situation. Choice B, Beneficence, involves promoting the patient's well-being, which is related but not directly addressing the act of minimizing harm. Choice D, Autonomy, refers to respecting the patient's right to make decisions about their own care, which is not the key principle at play when minimizing harm in this context.
4. What ECG changes are expected in a patient with hypokalemia?
- A. Flattened T waves
- B. Prominent U waves
- C. Widened QRS complexes
- D. Tall T waves
Correct answer: A
Rationale: Flattened T waves are an early indicator of hypokalemia on an ECG. Hypokalemia primarily presents with flattened T waves, not prominent U waves, widened QRS complexes, or tall T waves. Prominent U waves are associated with hypokalemia only in severe cases. Widened QRS complexes are more indicative of hyperkalemia, while tall T waves are seen in hyperkalemia as well.
5. A client with chronic obstructive pulmonary disease (COPD) is being assessed by a nurse. Which finding should the nurse expect?
- A. Increased anterior-posterior (AP) chest diameter
- B. Decreased respiratory rate
- C. Weight gain
- D. Productive cough with yellow sputum
Correct answer: A
Rationale: In chronic obstructive pulmonary disease (COPD), clients often develop a barrel chest, characterized by an increased anterior-posterior diameter of the chest due to hyperinflation of the lungs. This change in chest shape is a common finding in COPD. Decreased respiratory rate, weight gain, and productive cough with yellow sputum are not typical findings associated with COPD.
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