Which B vitamin deficiency is associated with cheilosis, glossitis, vascularization of the cornea, and itchy dermatitis of the scrotum and vulva?
Pyridoxine (vitamin B6)
Riboflavin (vitamin B2)
Thiamine (vitamin B1)
Niacin (nicotinic acid)
The Correct Answer is B
A. Pyridoxine (vitamin B6): Deficiency in vitamin B6 can cause peripheral neuropathy, irritability, depression, and seizures. While glossitis may occur, the combination of cheilosis and corneal vascularization is not typical of B6 deficiency.
B. Riboflavin (vitamin B2): Riboflavin deficiency is classically associated with cheilosis, glossitis, corneal vascularization, and seborrheic dermatitis affecting areas like the scrotum and vulva. These findings are hallmark signs of ariboflavinosis.
C. Thiamine (vitamin B1): Thiamine deficiency causes beriberi and Wernicke-Korsakoff syndrome, with manifestations including neuropathy, heart failure, and confusion. It is not linked to cheilosis or corneal changes.
D. Niacin (nicotinic acid): Niacin deficiency results in pellagra, characterized by the “three Ds”: dermatitis, diarrhea, and dementia. The dermatitis is photosensitive but does not involve cheilosis or corneal vascularization.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The right second intercostal space: This area corresponds to the aortic valve area, not the pulmonic valve area. Palpation here would assess for pulsations related to the aortic region rather than the pulmonic.
B. The left fifth intercostal space: This location is too low and corresponds more closely to the tricuspid area if near the sternum. It does not provide assessment data for the pulmonic valve.
C. The left second intercostal space: The pulmonic valve area is located at the left second intercostal space near the sternal border. This is the correct site for palpating unexpected pulsations associated with the pulmonic area.
D. The left fifth intercostal space at the midclavicular line: This area is where the apical impulse, or point of maximal impulse (PMI), is palpated. It reflects left ventricular activity, not the pulmonic valve.
Correct Answer is A
Explanation
This is the dorsalis pedis pulse located on the dorsum of the foot along the extensor hallucis longus tendon.
B. This is the posterior tibial located behind and slightly below the medial malleolus on the inner aspect of the ankle.
C. This is the popliteal artery pulse found behind the knee in the popliteal fossa. It assesses circulation above the tibia, not posterior tibial.
D. This is the femoral pulse found in the groin (inguinal area), useful for assessing central circulation, but not posterior tibial.
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