The TNM (Tumor size, Node (lymph) & Metastases) classification is not used for brain tumors for:
Most patients with CNS tumors develop metastatic disease
Brain tumors are more deadly
Tumor size is less relevant than the location and histology
Brain tumors have poor prognosis
The Correct Answer is C
Choice A reason: Most patients with CNS tumors do not develop metastatic disease. Central nervous system (CNS) tumors, including brain tumors, typically do not metastasize outside the CNS. Instead, they grow and exert pressure on adjacent brain structures, leading to neurological symptoms.
Choice B reason: While brain tumors can be very deadly, the TNM classification system is not avoided due to the lethality of the tumors. The main reason for not using the TNM system is because the classification criteria do not align well with the unique aspects of brain tumors.
Choice C reason: Tumor size is less relevant than the location and histology for brain tumors. The location of the tumor within the brain and its histological characteristics (e.g., type, grade, and molecular features) are more critical for prognosis and treatment planning. Brain tumors can cause significant clinical issues even when small, depending on their location.
Choice D reason: Brain tumors can have a poor prognosis, but this is not the reason the TNM classification is not used. The classification system's limitation is primarily due to the fact that brain tumors' behavior and treatment considerations depend more on their location and histological features than on tumor size, nodal involvement, and metastasis, which are the focus of the TNM system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This explanation is not correct. The reason why oral medications are not used for type 1 diabetes is not related to the child's ability to take the entire dose. The primary issue is the nature of insulin and how it must be administered.
Choice B reason: This statement is incorrect. The use of insulin injections is not based on age but on the type of diabetes. Type 1 diabetes requires insulin therapy regardless of the patient's age.
Choice C reason: Insulin is a protein that, if taken orally, would be broken down by the digestive enzymes in the gastrointestinal tract, rendering it ineffective. For this reason, insulin must be administered through subcutaneous injections to ensure it reaches the bloodstream intact and can effectively regulate blood glucose levels.
Correct Answer is B
Explanation
Choice A reason: Running, while excellent for cardiovascular fitness and overall muscle strength, does not specifically target the pelvic floor muscles. These muscles require specific exercises to strengthen them effectively.
Choice B reason: Kegel exercises are specifically designed to strengthen the pelvic floor muscles. These exercises involve repeatedly contracting and relaxing the muscles that form part of the pelvic floor, which supports the bladder, bowel, and uterus. Regular practice of Kegel exercises can improve bladder control and overall pelvic health.
Choice C reason: Holding urine for extended periods of time is not a recommended way to strengthen pelvic muscles. In fact, this practice can lead to urinary tract infections and bladder problems. It is important to empty the bladder regularly to maintain urinary health.
Choice D reason: Weight-bearing exercises are beneficial for bone health and overall muscle strength but do not specifically target the pelvic floor muscles. Specific exercises, like Kegels, are needed to strengthen the pelvic floor effectively.
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