A nurse documents that the client has a normal pupillary light reflex. The nurse should recognize that this reflex indicates which of the following?
The eyes converge to focus on the light.
The eye focuses the image in the center of the pupil.
Dilation of both pupils occurs in response to bright light.
Constriction of both pupils occurs in response to bright light.
The Correct Answer is D
A. The eyes converge to focus on the light.
This statement refers to the convergence reflex, where both eyes move medially (towards each other) to maintain single binocular vision when focusing on a near object. It is not related to the pupillary light reflex, which involves changes in pupil size in response to light.
B. The eye focuses the image in the center of the pupil.
This choice does not accurately describe the pupillary light reflex. The pupillary light reflex involves constriction of the pupil in response to light, not focusing an image in the center of the pupil.
C. Dilation of both pupils occurs in response to bright light.
This statement is incorrect. In response to bright light, the pupils should constrict, not dilate. Dilation of pupils in bright light could indicate an abnormal response, such as in cases of certain neurological conditions or drug use.
D. Constriction of both pupils occurs in response to bright light.
This choice is correct. In the pupillary light reflex, both pupils constrict when exposed to bright light. This response is a protective mechanism to prevent excessive light from entering the eyes, ensuring optimal visual acuity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D","E"]
Explanation
A. Use of accessory muscles
Explanation: Using accessory muscles during breathing indicates increased effort to breathe, which can be a sign of respiratory distress. It suggests that the client is having difficulty breathing and is using additional muscles to aid in the process. This finding should be reported to the practitioner for further evaluation.
B. Nail bed greater than 160 degrees
Explanation: A nail bed angle greater than 160 degrees, also known as clubbing, is an abnormal finding and can be associated with chronic respiratory or cardiovascular conditions. It may indicate insufficient oxygenation and should be reported to the practitioner for evaluation.
C. Circumoral cyanosis
Explanation: Circumoral cyanosis, which is a bluish discoloration around the mouth, indicates inadequate oxygenation. It can be a sign of respiratory or cardiac problems and should be reported to the practitioner for further assessment and intervention.
D. Pursed lip breathing
Explanation: Pursed lip breathing is a technique often used by individuals with respiratory difficulties to improve oxygen exchange. However, if it's observed in a person who does not normally use this technique, it could indicate respiratory distress and should be reported to the practitioner for evaluation.
E. Anteroposterior-to-transverse diameter of 1:1
Explanation: An anteroposterior-to-transverse diameter of 1:1 (also known as barrel chest) is an abnormal finding often associated with chronic obstructive pulmonary disease (COPD). It suggests overinflation of the lungs and can impair effective breathing. This finding should be reported to the practitioner for further evaluation.
Correct Answer is B
Explanation
A. Wheezing: Wheezing is a continuous, high-pitched whistling sound usually heard during expiration. It is often associated with narrowed airways, such as in asthma or chronic obstructive pulmonary disease (COPD). Wheezing occurs due to the turbulent airflow through narrowed bronchi or bronchioles and is not typically associated with pleuritis.
B. Friction rub: Pleuritis, or inflammation of the pleura, can cause a friction rub. This sound occurs when the inflamed pleural layers rub against each other during breathing. It's a grating or rubbing sound heard on auscultation and is a hallmark sign of pleuritis.
C. Stridor: Stridor is a high-pitched, harsh sound heard during inspiration and sometimes expiration. It is often a sign of upper airway obstruction, such as in croup or anaphylaxis. Stridor results from turbulent airflow through a partially obstructed or narrowed larynx or trachea.
D. Crackles: Crackles, also known as rales, are brief, discontinuous, popping sounds heard on inspiration. They can be fine or coarse and are often associated with conditions that cause fluid or secretions in the alveoli or small airways, such as pneumonia or heart failure. Crackles are not typically associated with pleuritis.
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