Which factor is most likely to affect drug distribution?
Drug dose
Health of the client's kidneys
Client gastrointestinal health
Serum protein binding
The Correct Answer is D
A. Drug dose: While the dose determines the amount of drug available for absorption and potential effect, it does not directly control how the drug is distributed once in systemic circulation. Distribution depends on factors like tissue perfusion, membrane permeability, and protein binding.
B. Health of the client’s kidneys: Kidney function primarily influences drug elimination rather than distribution. Although renal disease can indirectly alter plasma protein levels and fluid balance, it mainly affects how quickly a drug is excreted from the body, not its initial distribution.
C. Client gastrointestinal health: Gastrointestinal health affects drug absorption, determining how much of the drug enters the bloodstream. However, once absorbed, the distribution phase depends on circulatory and protein-related factors, making GI health less directly relevant to this process.
D. Serum protein binding: Drugs that bind to plasma proteins, such as albumin, have reduced availability for tissue distribution since only unbound (free) drug is pharmacologically active. Conditions altering protein levels like liver disease or malnutrition can significantly impact drug distribution and therapeutic effect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A severe skin reaction that occurs following parenteral drug administration: Severe skin reactions, such as Stevens-Johnson syndrome, may occur with certain medications, but these are not related to torsades de pointes, which specifically involves the heart’s electrical conduction system.
B. A form of ototoxicity that can occur when taking the drug gentamicin: Gentamicin can indeed cause ototoxicity, leading to hearing loss or balance disturbances. However, this effect is unrelated to torsades de pointes, which is a ventricular arrhythmia.
C. A dangerous cardiac arrhythmia that can occur when taking doxorubicin: Torsades de pointes is a type of polymorphic ventricular tachycardia associated with QT prolongation. Certain drugs, including chemotherapeutics like doxorubicin and others that prolong QT interval, can trigger this life-threatening arrhythmia.
D. A musculoskeletal toxicity that can occur when taking simvastatin: Statins like simvastatin may cause muscle-related adverse effects such as myopathy or rhabdomyolysis, but they do not lead to torsades de pointes, which is cardiac in nature.
Correct Answer is D
Explanation
A. Hyperactivity in young children: Ginger root has no therapeutic role in managing hyperactivity or attention-related disorders. Interventions for hyperactivity typically involve behavioral therapy or stimulant medications, not herbal remedies like ginger.
B. Insomnia from shiftwork: Ginger does not have sedative or sleep-promoting properties. Sleep difficulties from shift work are better addressed through sleep hygiene, melatonin, or light therapy rather than using ginger supplements.
C. Depression following a tragedy: Ginger has not been shown to influence mood regulation or serotonin levels. Treatment for depression typically involves counseling, antidepressants, or cognitive-behavioral therapy.
D. Nausea during a cruise vacation: Ginger root is widely used as a natural antiemetic to relieve nausea and vomiting, including motion sickness. Its active compounds, such as gingerols and shogaols, help reduce gastrointestinal irritation and stabilize stomach motility.
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