Kuc Clinical Pharmacy Final Exam

The best empiric therapy for P.E. is Doxycycline 100 mg orally twice daily because it covers the most common pathogens that cause community-acquired pneumonia (CAP), including Streptococcus pneumoniae and atypical organisms such as Mycoplasma pneumoniae and Chlamydophila pneumoniae. It is also effective against the causative agents of CAP in patients who have not received antibiotics in the past 3 months. Additionally, Doxycycline has good oral bioavailability and is well-tolerated, making it a suitable choice for outpatient treatment.

Aggressive fluid resuscitation is the most likely option to improve the survival of this patient. The patient's presentation suggests sepsis, as indicated by the fever, hypotension, tachycardia, and leukocytosis. The dry mucous membranes, poor skin turgor, and absence of edema further support the diagnosis of hypovolemia. Aggressive fluid resuscitation helps restore intravascular volume and improve tissue perfusion, which is crucial in sepsis management. This intervention can help stabilize the patient's hemodynamics and prevent further organ damage.

The patient's presentation of nausea, vomiting, polyuria, polydipsia, and vague abdominal pain along with the laboratory findings of low bicarbonate (HCO3-) levels, high glucose, and positive ketones suggest diabetic ketoacidosis (DKA). DKA is a type of metabolic acidosis characterized by an increased anion gap. The low bicarbonate levels indicate a primary metabolic acidosis. The respiratory alkalosis is a compensatory response to the acidosis, as the body tries to increase ventilation to eliminate carbon dioxide and decrease the acidity. Therefore, the correct answer is metabolic acidosis with high anion gap, with non-compensatory respiratory alkalosis.

The most appropriate medication to discontinue in this patient's regimen is metformin and celecoxib. This is because both metformin and celecoxib can potentially contribute to renal impairment, which can worsen the patient's stage 3 chronic kidney disease. Discontinuing these medications can help preserve the remaining kidney function and prevent further damage. Nifedipine and quinapril are commonly used to manage hypertension, and discontinuing them may lead to uncontrolled blood pressure. Nifedipine and metformin, as well as quinapril and metformin, are not the most appropriate choices to discontinue based on the patient's medical history and current condition.

The target hemoglobin level for this patient is 11-12 g/dL. This is because the patient has symptoms of anemia, such as fatigue and pallor, and a low hemoglobin level of 9.8 g/dL. The goal of therapy with an erythropoiesis-stimulating agent is to increase the hemoglobin level to a target range that is appropriate for the patient's condition. In this case, a target hemoglobin level of 11-12 g/dL is considered appropriate for a patient with diabetic nephropathy and an estimated glomerular filtration rate of 19 mL/min/1.73 m2. Higher target hemoglobin levels may increase the risk of cardiovascular events and mortality in patients with chronic kidney disease.

The best reason to discourage the use of HES in this patient is because it is associated with an increased incidence of mortality. This means that using HES for fluid resuscitation could potentially increase the risk of death for the patient.

ACEI or ARBs are effective in reducing proteinuria and are nephroprotectors in the early stages of diabetic nephropathy. This means that these medications can help decrease the amount of protein in the urine and protect the kidneys from damage in the early stages of diabetic kidney disease. The combination of ACEIs and ARBs has been shown to be more effective than using either medication alone. Hypokalemia, or low potassium levels, is a common problem that can occur with the use of RAAS blockers. Therefore, all of the statements mentioned in the question are true.

ANCA is typically present in Wegener's granulomatosis. Wegener's granulomatosis is a systemic autoimmune disease that primarily affects the respiratory tract and kidneys. ANCA is an autoantibody that targets neutrophils, causing inflammation and tissue damage. The presence of ANCA is a characteristic feature of Wegener's granulomatosis and is used as a diagnostic marker for the disease. Goodpasture's syndrome, systemic lupus erythematosus, and thrombotic thrombocytopenic purpura are not typically associated with the presence of ANCA.

The correct answer is elevated serum potassium level. Acute renal failure induced by nonsteroidal anti-inflammatory drugs can lead to decreased renal blood flow and impaired filtration of potassium, resulting in elevated serum potassium levels. This condition is known as hyperkalemia. The other options, including decreased serum chloride, sodium, and potassium levels, are not typically associated with acute renal failure induced by nonsteroidal anti-inflammatory drugs.

Mannitol causes hypertonic hyponatremia by drawing water from the intracellular space into the extracellular space. This leads to an increase in extracellular fluid volume and a dilution of sodium concentration. As a result, the overall sodium concentration in the body decreases, causing hypertonic hyponatremia.

Calcium should be administered first in the management of patients with acute hyperkalemia. Hyperkalemia is a condition characterized by high levels of potassium in the blood, which can lead to serious cardiac complications. Calcium helps stabilize the cardiac membranes and can quickly counteract the effects of hyperkalemia, preventing life-threatening arrhythmias. Administering calcium first buys time to address the underlying cause of hyperkalemia and allows for subsequent treatments, such as sodium bicarbonate or other interventions, to be more effective.

Hypokalemia refers to low levels of potassium in the blood. Transcellular shift is a process in which potassium is shifted from the extracellular fluid into the cells. Beta blockers, insulin, and metabolic alkalosis can all cause hypokalemia due to transcellular shift. However, periodic paralysis is a condition characterized by episodes of muscle weakness or paralysis, often due to a genetic defect in ion channels. It does not cause transcellular shift of potassium and therefore does not lead to hypokalemia.

In acute diarrhea, there is excessive loss of fluids and electrolytes through the gastrointestinal tract. This can lead to dehydration and a decrease in urine sodium excretion. As a result, the body tries to conserve sodium by reducing its excretion in the urine, leading to urine sodium excretion being less than 20 mmol/day.

Studies have shown that dopamine use in patients with established intrinsic acute renal failure does not improve mortality rates. Dopamine is commonly used to increase urine output and improve renal function, but there is no evidence to support its effectiveness in reducing mortality in this population. Therefore, the correct answer is that dopamine use has not been shown to improve mortality rates in patients with established intrinsic acute renal failure.

Stage 1 diabetic nephropathy is characterized by increased GFR due to hyperfiltration. This means that the glomerular filtration rate (GFR), which is the rate at which blood is filtered by the kidneys, is higher than normal. This is caused by the kidneys working harder to compensate for the damage caused by diabetes. However, it is important to note that this increased GFR is not sustainable and eventually leads to progressive deterioration of kidney function in later stages of diabetic nephropathy.

Minimal change disease is a kidney disorder characterized by selective proteinuria, which means that only certain proteins are excreted in the urine. This condition is not associated with renal insufficiency despite treatment, as it typically responds well to corticosteroid therapy. It is also not the most common cause of nephrotic syndrome in adults, as it is more commonly seen in children. Diagnosis of minimal change disease is typically made through electron microscopy, not light microscopy. Therefore, the statement "It is associated with selective proteinuria" accurately characterizes minimal change disease.

Giving prophylactic valganciclovir at the time of transplantation and for 12 weeks thereafter could have decreased the likelihood of the patient developing CMV infection and decreased the severity of her illness. CMV infection is a common complication after renal transplantation and can lead to significant morbidity and mortality. Prophylactic antiviral therapy with valganciclovir has been shown to reduce the risk of CMV infection and its associated complications in transplant recipients. Therefore, initiating prophylactic valganciclovir in this patient could have prevented or minimized the development of her symptoms and improved her overall outcome.

HIV disease is a secondary cause for focal segmental sclerosis. Focal segmental sclerosis is a kidney disease characterized by scarring in the glomeruli, the tiny blood vessels in the kidneys. HIV can directly affect the kidneys and lead to damage and scarring. This can result in focal segmental sclerosis. Therefore, HIV disease is a secondary cause for this condition.

Cyclosporine commonly induces a volume-dependent form of hypertension in patients who have undergone renal transplantation. This means that the hypertension is caused by an increase in blood volume, which can lead to an increase in blood pressure. This is a common complication in patients who are taking cyclosporine as part of their immunosuppressive regimen after a renal transplant. It is important to monitor blood pressure regularly in these patients and manage hypertension appropriately to prevent further complications.

In this scenario, B.Y. is an 85-year-old woman who is bedridden and has a chronically catheterized urinary catheter. Although her urine is cloudy and a urinalysis shows many bacteria, she is not experiencing any symptoms. Asymptomatic bacteriuria is common in chronically catheterized patients and does not require treatment unless there are accompanying symptoms such as fever or discomfort. Therefore, the best option for B.Y. is to not administer any therapy because she is chronically catheterized and has no symptoms.

Most deaths caused by infection in patients with ESRD are not the result of pneumonia. Other types of infections, such as bloodstream infections, access site infections, and urinary tract infections, are more common causes of infection-related deaths in patients with ESRD.

The most likely diagnosis for the patient's allograft dysfunction is antibody-mediated rejection. This is supported by the patient's history of high levels of preformed antibodies and positive cross-match to several potential deceased donors. Additionally, the patient's biopsy displaying evidence of tubular injury with occasional perivascular polymorphs is consistent with antibody-mediated rejection. The other options, delayed posttransplantation acute tubular necrosis (ATN), early pyelonephritis, and subclinical acute cell-mediated rejection, do not align with the patient's clinical presentation and history.

The correct answer is that the results of analysis of the urine sediment are consistent with a finding of hypercalciuria as a cause of the hematuria. This statement is false because the presence of dysmorphic red cells and red cell casts in the urine sediment suggests glomerular pathology, not hypercalciuria. Hypercalciuria is a condition characterized by elevated levels of calcium in the urine and is not typically associated with dysmorphic red cells or red cell casts. The other statements are true and consistent with the patient's presentation of acute glomerulonephritis, likely due to IgA deposition.

The patient's presentation with fatigue, bone pain, anemia, and thrombocytopenia, along with the presence of osteolytic lesions and replacement of normal marrow with plasma cells on bone marrow biopsy, suggests multiple myeloma. In multiple myeloma, there is an overproduction of abnormal plasma cells that can lead to the overproduction of normally filtered proteins. This overwhelms the reabsorptive capacity of the tubules, resulting in proteinuria. The other options are not consistent with the patient's clinical findings and underlying pathology.