Based on the diagnosis of Dehydration, select which IV solution will be ordered to treat waiting this patient.
5% dextrose in Lactated ringers
0.45% sodium chloride
0.9 Sodium chloride
3% Normal Saline
The Correct Answer is C
0.9% Sodium chloride is a balanced isotonic solution that closely resembles the electrolyte composition of the extracellular fluid. It is commonly used to treat dehydration because it helps restore fluid volume and electrolyte balance in the body.
5% dextrose in Lactated Ringers: This solution is typically used for fluid and electrolyte replacement in patients who have significant fluid losses or imbalances, but it may not be the best choice for dehydration alone.
0.45% sodium chloride: This solution, also known as half-normal saline, has a lower concentration of sodium chloride and is often used for patients who require hypotonic fluids. It may not provide enough electrolyte replacement for a dehydrated patient. 3% Normal Saline: This solution has a higher concentration of sodium chloride and is typically used for specific indications, such as severe hyponatremia or in critical care settings. It is not the first-line choice for treating dehydration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Cephalosporins are similar to another group of beta-lactam antibiotics called the Penicillins. Both cephalosporins and penicillins belong to the beta-lactam class of antibiotics, which share a similar structure and mechanism of action. They inhibit bacterial cell wall synthesis by binding to specific proteins called penicillin-binding proteins (PBPs), leading to bacterial cell death. This shared mechanism of action makes cephalosporins and penicillins similar in their antibacterial effects.
On the other hand, macrolides, fluoroquinolones, and aminoglycosides are different classes of antibiotics with distinct structures and mechanisms of action. They work through different mechanisms to inhibit bacterial growth and have different spectrums of activity compared to beta-lactam antibiotics like cephalosporins and penicillins.
Correct Answer is B
Explanation
Antihistamines primarily work by blocking the H1 receptors, which are the receptors responsible for mediating the actions of histamine in the body. By blocking these receptors, antihistamines prevent or reduce the effects of histamine, such as itching, sneezing, runny nose, and watery eyes. This is the main mechanism by which antihistamines provide their therapeutic effects. "Antihistamines block release of histamine from mast cells and basophils." This statement is incorrect. Antihistamines do not block the release of histamine; instead, they block the histamine receptors to prevent the effects of histamine.
"H1 antagonists can bind to H1 receptors, H2 receptors, and muscarinic receptors." This statement is incorrect. H1 antagonists, or H1 receptor blockers, specifically bind to H1 receptors and do not have significant affinity for H2 receptors or muscarinic receptors. "First-generation antihistamines are more selective than second-generation antihistamines." This statement is incorrect. First-generation antihistamines are generally less selective and can have more sedating and anticholinergic effects compared to second-generation antihistamines, which are designed to be more selective for H1 receptors and have reduced sedative properties.
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