The nurse is testing a patient's visual accommodation, which finding would the nurse expect to see?
Changes in the peripheral vision in response to light.
Pupillary constriction and convergence of the axis when looking at a near object.
Involuntary blinking in the presence of bright light.
Dilation of the pupils when looking at a far object.
The Correct Answer is B
Choice A rationale
Changes in peripheral vision in response to light are not directly related to visual accommodation. Peripheral vision is mediated by rod photoreceptors and is assessed through visual field testing, whereas accommodation involves the crystalline lens and its ability to change shape for focusing.
Choice B rationale
Visual accommodation is the process by which the eye changes its optical power to maintain a clear image or focus on an object as its distance varies. When looking at a near object, the ciliary muscles contract, relaxing the suspensory ligaments, allowing the lens to become more convex (thicker) to increase refractive power. This change in lens shape is accompanied by pupillary constriction (miosis) and convergence of the visual axes (medial movement of the eyeballs) to maintain binocular vision.
Choice C rationale
Involuntary blinking in the presence of bright light is a reflex action called the blink reflex, serving to protect the eye from excessive light and maintain lubrication. It is a protective mechanism and not a component of the physiological process of visual accommodation, which focuses on near objects.
Choice D rationale
Dilation of the pupils (mydriasis) occurs when looking at a far object or in dim light conditions to allow more light to enter the eye. This is regulated by the sympathetic nervous system and is opposite to the pupillary constriction that accompanies accommodation for near vision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
"Right medication" refers to ensuring that the drug administered is precisely the one prescribed by the healthcare provider. This involves verifying the medication name, strength, and formulation against the order. In this scenario, the issue is not the medication itself, but rather the timing of its administration, making this choice incorrect.
Choice B rationale
"Right route" pertains to administering the medication via the prescribed pathway (e.g., oral, intravenous, subcutaneous). This ensures that the drug reaches the systemic circulation or target site effectively. The scenario explicitly states "oral guaifenesin," indicating the route was correct; the error lies in the timing.
Choice C rationale
"Right time" is a crucial aspect of medication administration, ensuring that the drug is given at the prescribed frequency and within the specified time window. Administering a medication 2 hours after its scheduled dose constitutes a deviation from the ordered time, potentially affecting its therapeutic efficacy or peak plasma concentration.
Choice D rationale
"Right dose" involves verifying that the amount of medication given is precisely what was ordered, preventing under-dosing or over-dosing. The scenario does not indicate any error in the quantity of guaifenesin administered, only the timing of its delivery. Therefore, this choice is not applicable to the described problem.
Correct Answer is ["2590/2000"]
Explanation
INTAKE:.
Step 1: Jevity (Tube feeding) 50 mL/hr × 12 hours = 600 mL.
Step 2: oz free water tube feeding flush. Convert ounces to milliliters: 6 oz × 30 mL/oz = 180 mL.
Step 3: units of PRBCs (250 mL/each) = 2 × 250 mL = 500 mL.
Step 4: Zosyn IV 50 mL.
Step 5: oz ice chips. Convert ounces to milliliters (ice chips are typically calculated as half their volume in liquid): 4 oz × 30 mL/oz = 120 mL; 120 mL ÷ 2 = 60 mL.
Step 6:.9% NS 100 mL/hr × 12 hours = 1200 mL.
Step 7: Total Intake = 600 mL + 180 mL + 500 mL + 50 mL + 60 mL + 1200 mL = 2590 mL. OUTPUT:.
Step 1: NG Suction: 50 mL.
Step 2: Urine: 1850 mL.
Step 3: Wound vac: 100 mL.
Step 4: Total Output = 50 mL + 1850 mL + 100 mL = 2000 mL. Answer: INTAKE: 2590 mL / OUTPUT: 2000 mL.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.