The action of stimulant drugs used in the treatment of ADHD increases the availability of a certain neurotransmitter, leading to which of the current popular ideas on the etiology of ADHD?

a. norepinephrine theory
b. serotonin hypothesis
c. monoamine theory
d. dopamine hypothesis


D
Because stimulant drugs (the mainstay of treatment for ADHD) increase the availability of the neurotransmitter dopamine, "the dopamine hypothesis" of ADHD causation has gained a wide following. This hypothesis suggests that ADHD is due to inadequate availability of dopamine in the central nervous system.

Nursing

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A drug is ordered to be administered IV at the initial rate of 2 mU/min, and may increase by 4 mU/min q 15 min to a maximum of 18 mU/min. The IV strength is 10 mU/mL. The initial flow rate is __________ mL/h. Standard Text:

Fill in the blank(s) with correct word

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The nurse needs to assess the client's elimination patterns. Which client will most likely deny the urge to defecate?

A) Client with anxiety and depression B) Client who consumes >30 g of fiber C) Client who has a colostomy D) Client 3 days' postvaginal delivery

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A patient with cancer has also been diagnosed with uterine leiomyomas. Which procedure does the nurse prepare the patient for?

a. Myomectomy b. Hysterectomy c. Endometrial ablation d. Magnetic resonance-guided focused ultra sound surgery

Nursing

The patient is a gravida 6, para 1. She is admitted after a cesarean section after an amniotic embolus. Her heart rate (HR) is more than 150 beats/min with a systolic BP less than 80 mm Hg

Her temperature is 38 °C, and her condition has caused her to develop prerenal azotemia. The patient was fluid resuscitated through a double-lumen catheter, which was placed into her right femoral access, and started on vasopressors with a fair response (BP, 80/50 mm Hg; HR, 122 beats/min). Because of her diagnosis and a concern regarding fulminating sepsis, the patient was begun on CVVH. Which of the statements best describes CVVH? a. Complete renal replacement therapy requiring large volumes of ultrafiltrate and filter replacement b. Complete renal replacement therapy that allows removal of solutes and modification of the volume and composition of extracellular fluid to occur evenly over time c. Involves the introduction of sterile dialyzing fluid through an implanted catheter into the abdominal cavity, which relies on osmosis, diffusion, and active transport to help remove waste from the body d. Complete renal replacement therapy that allows an exchange of fluid, solutes, and solvents across a semipermeable membrane at 100 to 300 mL/hr

Nursing