Which of the following statements correctly describes GABA (gamma-amino butyric acid)?

Correct Answer: B

Rationale: Rationale: Choice B is correct because GABA is indeed released by GABA neurons and acts to inhibit the propagation of signals triggered by dopamine in the post-synaptic neuron. GABA functions as an inhibitory neurotransmitter in the central nervous system. Choices A and C are incorrect. Choice A is inaccurate because GABA inhibits the release of dopamine, not the other way around. Choice C is incorrect as heroin and morphine act on opioid receptors, not GABA receptors. Choice D is incorrect because not all statements are true.

Correct Answer: C

Rationale: The correct answer is C because LPN/LVNs can assist in planning bathing, turning, and ambulation for a morbidly obese client. This is crucial in preventing complications such as pressure ulcers, deep vein thrombosis, and respiratory issues. LPN/LVNs can provide physical support and guidance to ensure the client's safety and comfort during these activities. Choice A is incorrect because obtaining oversized equipment is not the primary role of LPN/LVNs. Choice B is also incorrect as setting up a reinforced trapeze bar is more of a facility management task. Choice D is incorrect as designing alternatives for routine tasks is not within the scope of practice for LPN/LVNs.

Correct Answer: D

Rationale: The correct answer is D: Checking the tube placement and gastric residual prior to feedings. This is crucial to ensure proper placement of the tube and to assess if there is any undigested food in the stomach, which can lead to vomiting if fed through the tube. By checking these factors before administering feedings, the nurse can prevent complications. A: Consulting the physician and dietitian is important but does not directly prevent improper infusion or vomiting. B: Administering feedings at room temperature is a good practice but does not directly prevent vomiting. C: Changing the tube feeding container and tubing may be necessary for hygiene but does not directly prevent improper infusion or vomiting. In summary, checking the tube placement and gastric residual is essential in preventing vomiting and ensuring proper feeding, making it the correct choice.

Correct Answer: C

Rationale: The correct answer is C: Rapid breathing and pulse rate. In acute pancreatitis, inflammation of the pancreas can lead to systemic complications, including respiratory distress and tachycardia. This occurs due to the release of inflammatory mediators affecting the respiratory and cardiovascular systems. Increased thirst and urination (Choice A) are more indicative of diabetes or renal issues. Hypertension and nausea (Choice B) are not typical symptoms of acute pancreatitis. Frothy, foul-smelling stools (Choice D) are more likely linked to malabsorption disorders rather than acute pancreatitis. Rapid breathing and pulse rate are key signs that indicate the severity of the condition and the need for prompt intervention.

Correct Answer: C

Rationale: The correct answer is C: Elevated serum ammonia levels. Prolonged antibiotic therapy can lead to disruption of normal gut flora, causing overgrowth of ammonia-producing bacteria. Elevated serum ammonia levels can indicate hepatic encephalopathy, a serious condition that requires immediate intervention. Coagulation problems (A) are more commonly associated with liver disease or vitamin deficiencies. Impaired absorption of amino acids (B) is typically seen in conditions like celiac disease or gastrointestinal disorders, not specifically related to prolonged antibiotic use. Increased mucus and bicarbonate secretion (D) are not directly related to prolonged antibiotic therapy, but rather to respiratory or gastrointestinal conditions.