A patient's arterial blood gas (ABG) values include a pH of 7.48, a PaCO2 of 38, and an HCO3- of 30. Around which acid-base imbalance would the nurse plan the patient's care?

Choice A rationale:

Palpating lymph nodes for swelling is not directly related to thrombocytopenia. Thrombocytopenia is a condition characterized by a low platelet count, which can lead to easy bruising and bleeding. Checking lymph nodes is more relevant in assessing for infection or malignancy.

Choice B rationale:

Checking temperature for elevation is important for assessing infection, which could be a cause of thrombocytopenia. However, in this context, inspecting the skin for bruising or petechiae is more specific to thrombocytopenia. Petechiae are small, red or purple dots that appear on the skin when platelet count is low.

Choice D rationale:

Examining oral mucosa for ulceration is essential in the assessment of conditions like oral cancer or infection. While thrombocytopenia could lead to bleeding in the oral mucosa, it is not the most specific or immediate concern in a patient with known thrombocytopenia.

Choice A rationale:

Fullness from ascites is a symptom associated with conditions like liver cirrhosis, not directly related to chronic heart failure. Ascites is the accumulation of fluid in the abdominal cavity, causing a feeling of fullness and abdominal discomfort.

Choice B rationale:

Hypoproteinemia, a condition characterized by low levels of proteins in the blood, can lead to fluid retention and edema. However, it is not a direct cause of frequent urination. Frequent urination in this context is more likely related to increased fluid volume in the body, which can be caused by increased renal perfusion in the supine position due to fluid redistribution from the lower extremities to the kidneys.

Choice C rationale:

Hypoperfusion to the brain can lead to neurological symptoms, but it does not directly cause frequent urination. Frequent urination is often related to the kidneys' ability to filter excess fluid and excrete it as urine.

Choice D rationale:

Increased renal perfusion in the supine position can cause frequent urination, especially at night. When a person with chronic heart failure lies down, fluid that has accumulated in the lower extremities (edema) during the day is redistributed to the kidneys due to the change in body position. This increased renal perfusion results in an increased production of urine, leading to nocturia (frequent urination at night) and disrupting the patient's ability to sleep well. This symptom is characteristic of heart failure-related fluid overload and is an important clinical sign indicating worsening heart failure.