The AGACNP knows that when evaluating a patient with suspected acute pyelonephritis, which of the following is not a common feature?

Correct Answer: A

Rationale: The correct answer is A: Pyuria. Pyuria is a common feature in acute pyelonephritis, as it indicates the presence of white blood cells in the urine due to the infection. Fever, CVA tenderness, and gross hematuria are all common features of acute pyelonephritis. Fever is a systemic response to infection, CVA tenderness indicates inflammation of the kidney, and gross hematuria is often seen due to inflammation and damage to the kidney tissue. Therefore, the absence of pyuria would be unexpected in a patient with suspected acute pyelonephritis.

Correct Answer: B

Rationale: The correct answer is B: Gastroesophageal reflux disease (GERD). Achalasia is a motility disorder characterized by impaired esophageal peristalsis and lower esophageal sphincter relaxation. This dysfunction can lead to stagnant food in the esophagus, causing regurgitation and increased intra-esophageal pressure, which can trigger GERD. Squamous cell carcinoma (choice A) is not directly linked to achalasia. Esophageal atrophy (choice C) is not a typical consequence of achalasia. Malabsorption syndromes (choice D) are not directly associated with achalasia.

Correct Answer: A

Rationale: The correct answer is A because high-volume liver resection is typically performed in individuals with significantly compromised hepatic function to ensure adequate liver remnant. Removing 50 to 75% of the liver in a patient with metastatic colon cancer may be necessary for tumor clearance but carries risks due to potential impairment of liver function postoperatively. Choices B and C provide inaccurate information regarding the timeline and extent of liver regeneration following resection. Choice D is incorrect as removing up to 95% of the liver would lead to severe consequences, such as liver failure. Hence, option A is the most appropriate advice given the patient's situation.

Correct Answer: B

Rationale: The correct answer is B: His procedure has put him at significant risk for B12 absorption problems. Rationale: 1. Jejunum is primarily responsible for nutrient absorption, including B12. 2. Resection of a large portion of the jejunum can lead to malabsorption of B12. 3. B12 is essential for neurological function and red blood cell production. 4. Patients with significant jejunum resection are at high risk for B12 deficiency. 5. Monitoring B12 levels and potentially requiring supplementation is crucial for patients like Jake. Summary of other choices: A: Incorrect. Lifetime issues with diarrhea are not necessarily expected following jejunum resection. C: Incorrect. The ileum may assume some functions of the jejunum but cannot fully compensate. D: Incorrect. Enteral nutrition should not be delayed for months as it is essential for Jake's recovery and nutritional needs.

Correct Answer: C

Rationale: The correct answer is C because in obstructive shock due to a large pulmonary embolus, there is increased resistance to blood flow out of the right ventricle, leading to elevated right ventricular pressure. This causes a backup of blood into the pulmonary circulation, increasing left ventricular pressure. The increased left ventricular pressure results in decreased cardiac output as the left ventricle struggles to pump against the increased resistance. A: Elevated atrial and decreased ventricular pressures - This is incorrect as obstructive shock typically results in elevated ventricular pressures due to increased resistance. B: Elevated right-sided and decreased left-sided pressures - This is partially true, but C is a more complete answer that explains the consequences of these pressures on cardiac output. D: Elevated left ventricular pressure and decreased systemic vascular resistance - This is incorrect as obstructive shock leads to increased, not decreased, systemic vascular resistance due to the embolus obstructing blood flow.