Correct Answer: B

Rationale: Goiter is a condition characterized by the enlargement of the thyroid gland. The most common cause of goiter worldwide is iodine deficiency, which is required for the production of thyroid hormones. When there is insufficient iodine intake, the thyroid gland enlarges in an attempt to produce more hormones, leading to the development of goiter. While other factors can also contribute to the development of goiter, such as autoimmune diseases and certain medications, the primary cause associated with the condition is an iodine-deficient diet.

Correct Answer: B

Rationale: Vestibular neuritis is a condition characterized by the acute onset of severe vertigo, nausea, vomiting, and nystagmus. These symptoms are typically worsened by head movement. Vestibular neuritis is caused by inflammation of the vestibular nerve, which plays a key role in balance and spatial orientation. The classic presentation of these symptoms, along with the absence of hearing loss (which is seen in labyrinthitis), points towards vestibular neuritis as the most likely cause in this scenario. Meniere's disease presents with recurrent episodes of vertigo, hearing loss, tinnitus, and sensation of fullness in the ear. Benign paroxysmal positional vertigo (BPPV) is characterized by brief episodes of vertigo triggered by changes in head position.

Correct Answer: A

Rationale: Nurse Nilda immediately responds to any cry from her pediatric patients to attend to her patients who cannot communicate verbally. Crying is one of the few ways infants and young children communicate their needs and discomforts. By responding promptly to their cries, Nurse Nilda can assess and address potential issues such as hunger, pain, discomfort, or other needs that the child may have. This enhances the quality of care provided and helps in comforting and soothing the child, ultimately promoting their well-being and building trust between the nurse and the patient.

Correct Answer: D

Rationale: When a client experiences cardiac arrest, their breathing may become insufficient, leading to inadequate elimination of carbon dioxide (CO2) from the body. With reduced CO2 elimination, the level of CO2 in the bloodstream increases, causing respiratory acidosis. This imbalance is characterized by a decrease in blood pH along with an increase in CO2 levels in the blood, resulting in an acidic environment. Respiratory acidosis is the most common imbalance seen in clients who have experienced cardiac arrest, as impaired gas exchange impacts the body's ability to maintain proper acid-base balance.

Correct Answer: B

Rationale: A severe headache is a classic sign of a hemorrhagic stroke. Hemorrhagic stroke occurs when a blood vessel in the brain ruptures and causes bleeding. This bleeding can lead to increased pressure within the skull, resulting in a sudden and severe headache. Other symptoms of a hemorrhagic stroke may include nausea, vomiting, sudden weakness or numbness on one side of the body, difficulty speaking or understanding speech, and loss of coordination. It is important to seek immediate medical attention if someone is experiencing symptoms of a stroke, including a severe headache, as prompt treatment is crucial in minimizing damage and improving outcomes.