Which of the following is not a function of parathyroid hormone?

Correct Answer: B

Rationale: The correct answer is 'inhibiting renal tubular reabsorption of phosphorus.' Parathyroid hormone actually inhibits renal tubular reabsorption of phosphorus, making this choice the opposite of its function. Parathyroid hormone functions to move calcium from bones to the bloodstream (Choice A), promote renal tubular reabsorption of calcium (Choice C), and enhance renal production of vitamin D metabolites (Choice D). Therefore, all other choices are functions of parathyroid hormone except for the inhibition of phosphorus reabsorption.

Correct Answer: C

Rationale: The correct answer is '"I should lay him on his back during a seizure."?' When a client is having a seizure, it is crucial to turn them onto their side to prevent aspiration of secretions. Placing them on their back can lead to potential airway compromise. Choices A, B, and D are correct statements that indicate a good understanding of caring for a child with a seizure disorder: ensuring rest, getting a medical alert bracelet for identification, and loosening clothing to facilitate breathing during a seizure.

Correct Answer: B

Rationale: The correct answer is diabetes insipidus. In this condition, the client's ADH level is increased. Diabetes insipidus is characterized by the inability of the kidneys to conserve water due to either inadequate secretion of ADH (central diabetes insipidus) or the kidneys' inability to respond to ADH (nephrogenic diabetes insipidus). Choices A, C, and D are incorrect. In diabetes mellitus, ADH levels are typically normal or elevated in response to high blood sugar levels. Hypothyroidism is not directly related to ADH secretion. In hyperthyroidism, ADH levels are usually normal or decreased.

Correct Answer: D

Rationale: Huntington's chorea is a neurological disorder characterized by writhing, twisting movements of the face and limbs, known as chorea. Epilepsy is characterized by seizures, not writhing, twisting movements. Parkinson's disease presents with tremors, rigidity, and bradykinesia, not writhing, twisting movements. Multiple sclerosis affects the central nervous system but does not typically involve writhing, twisting movements. Therefore, the correct answer is Huntington's chorea as it specifically manifests with these characteristic movements.

Correct Answer: A

Rationale: When a client is having a seizure and their blood oxygen saturation drops significantly, the priority action for the nurse is to open the airway. This allows for adequate oxygenation and ventilation. Administering oxygen can come after ensuring the airway is clear. Suctioning the client should be done if there is an airway obstruction, and checking for breathing is part of the assessment but opening the airway takes precedence to ensure proper oxygenation and ventilation during a critical event like a seizure.