Ms. Jackson has been suffering from persistent vomiting for two days. She appears to be lethargic and weak and has myalgia. She is noted to have dry mucous membranes and her capillary refill time takes more than 4 seconds. She is diagnosed with gastroenteritis and dehydration. Measurement of arterial blood gas shows pH 7.5, PaO2 85 mm Hg, PaCO2 40 mm Hg, and HCO3 34 mmol/L. What acid base disorder is shown?
Metabolic Alkalosis, Partially Compensated
Respiratory Acidosis, Partially Compensated
Respiratory Alkalosis, Uncompensated
Metabolic Alkalosis, Uncompensated
The Correct Answer is D
Choice A reason: This choice is incorrect. Partial compensation would typically involve a change in PaCO2 to counterbalance the elevated bicarbonate, which is not observed here.
Choice B reason: This choice is incorrect. Respiratory acidosis is characterized by a low pH and an elevated PaCO2, which is not consistent with the given values.
Choice C reason: This choice is incorrect. Respiratory alkalosis would present with a low PaCO2 due to hyperventilation, which is not the case here.
Choice D reason: This is the correct choice. The elevated pH and HCO3 with a normal PaCO2 indicate metabolic alkalosis without respiratory compensation. Persistent vomiting can lead to loss of stomach acid, which causes metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: A decreased neutrophil count is not typically associated with parasitic infections. Neutrophils are a type of white blood cell that responds to bacterial infections, so a decrease might be seen in viral infections or certain inflammatory conditions, but not specifically indicative of a parasitic infection.
Choice B reason: An elevated eosinophil count is often associated with parasitic infections, especially those involving tissue invasion. Eosinophils are white blood cells that play a crucial role in the immune response against parasitic infections. Normal eosinophil counts range from 0 to 500 cells per microliter of blood.
Choice C reason: An increased hemoglobin level is generally not related to the presence of a parasitic infection. Hemoglobin levels can be affected by various conditions, but they do not serve as a specific indicator for parasitic infections.
Choice D reason: An elevated platelet count can occur in various conditions, including inflammatory states and infections, but it is not a specific marker for parasitic infections. Platelets are components of blood that help with clotting and would not be used to differentiate between bacterial and parasitic infections.
Correct Answer is D
Explanation
Choice A reason: A rosebud like stoma orifice is a normal appearance for a new colostomy, indicating that the stoma is healthy and not in distress.
Choice B reason: Red drainage from a stoma can be normal, especially in the early postoperative period, as the stoma may ooze a small amount of blood. However, if the drainage is excessive or persistent, it should be reported.
Choice C reason: A shiny, moist stoma is also a sign of a healthy stoma. The stoma should be moist and have a pink or red color, similar to the inside of the mouth.
Choice D reason: A purplish colored stoma indicates compromised blood flow and is a sign of ischemia. This is a serious complication that requires immediate medical attention to prevent tissue death.
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