CCRN Adult Exam Preparation Material | CCRN (Adult) - Direct Care Eligibility Pathway

Explanation:
The patient has signs of myxedema coma, a life-threatening complication of hypothyroidism. The patient needs immediate treatment with thyroid hormone replacement, glucocorticoids, and supportive care. One of the supportive measures is to correct the hypothermia that often accompanies myxedema coma. A forced air warming blanket is a device that delivers warm air through a hose to a blanket that covers the patient. This helps to raise the patient’s core temperature and prevent further complications. Insulin drip is not indicated, as the patient does not have diabetes or hyperglycemia. 3% saline is a hypertonic solution that can worsen the hyponatremia and fluid overload that are common in myxedema coma. Diuretics are not recommended, as they can cause dehydration and electrolyte imbalance in the patient.
Reference: Myxedema Coma: Diagnosis and Treatment | AAFP
Myxedema coma - UpToDate
Myxedema: Symptoms, treatment & coma - Medical News Today

Explanation:
Subcutaneous emphysema (SE) is a condition where gas or air accumulates in the subcutaneous tissue layer of the skin, causing swelling and a crackling sensation when touched. SE can occur after esophagectomy, a surgical procedure to remove part or all of the esophagus, due to air leakage from the anastomosis site or the lung. SE can also be a sign of a more serious complication, such as anastomotic leakage, mediastinitis, or tracheal injury12. Therefore, the nurse should expect an order for a CT scan, which is a diagnostic imaging test that can detect the source and extent of the air leakage and any associated complications. A CT scan can also guide the appropriate management of SE, which may include conservative measures, such as increasing the suction of the chest tube, or more invasive interventions, such as surgical repair or drainage123. Chest tube insertion, IV antibiotics, and gastric decompression are not likely to be ordered for SE after esophagectomy, as they do not address the underlying cause of the air leakage or the potential complications. Chest tube insertion may be indicated for pneumothorax, but not for SE alone. IV antibiotics may be indicated for infection, but not for SE alone. Gastric decompression may be indicated for gastric distension, but not for SE alone.

Explanation:
The intended effects of medications for a patient in acute CHF are to reduce CVP and reduce SVR, as this would decrease the preload and afterload on the failing heart and improve the cardiac output and tissue perfusion. CVP (central venous pressure) is a measure of the pressure in the right atrium and reflects the volume status of the patient. SVR (systemic vascular resistance) is a measure of the resistance in the systemic circulation and reflects the tone of the blood vessels. Medications that can reduce CVP and SVR in acute CHF include diuretics, nitrates, angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, and vasodilators12. Increasing CVP and reducing SVR would increase the preload and decrease the afterload, which may be beneficial for some patients with low cardiac output and low filling pressures, but not for patients with acute CHF and volume overload3.
Reducing CVP and increasing SVR would decrease the preload and increase the afterload, which would worsen the cardiac function and oxygen demand in acute CHF3. Increasing CVP and increasing SVR would increase both the preload and the afterload, which would also worsen the cardiac function and oxygen demand in acute CHF3.
Reference: 1: Acute decompensated heart failure: Management - UpToDate4, p. 5-6.
2: Acute heart failure: diagnosis and management | Guidance | NICE, p. 8-9.
3: Hemodynamic monitoring in acute heart failure - UpToDate, p. 3-4.

Explanation:



Alkalinization of urine is one of the main goals of treatment for salicylate poisoning, as it enhances the renal excretion of salicylate and reduces its reabsorption. Alkalinization of urine can be achieved by administering intravenous sodium bicarbonate and maintaining adequate hydration and urine output. Alkalinization of urine can be monitored by measuring the urine pH, which should be above 7.5. Osmotic diuresis, decrease in gastric pH, and decrease in CPK are not indicative of successful treatment for salicylate poisoning. Osmotic diuresis may occur as a result of salicylate toxicity, but it does not improve the elimination of salicylate. Decrease in gastric pH may impair the absorption of salicylate, but it does not affect the elimination of salicylate. Decrease in CPK may reflect the resolution of rhabdomyolysis, which is a possible complication of salicylate poisoning, but it does not reflect the clearance of salicylate.
Reference: Salicylate (aspirin) poisoning: Management - UpToDate1, p. 1-2.
Salicylate poisoning - Symptoms, diagnosis and treatment | BMJ Best Practice US2, p. 4-5.

Explanation:






The patient’s presentation is suggestive of splenic abscess, which is a rare but serious complication of splenomegaly. Splenic abscess is caused by bacterial or fungal infection of the spleen, usually from hematogenous spread or contiguous spread from adjacent organs. The most common symptoms are fever, chills, abdominal pain, and left shoulder pain (Kehr sign). The most significant laboratory finding is positive blood cultures, which indicate systemic infection and sepsis. Other laboratory findings may include leukocytosis, anemia, thrombocytopenia, elevated inflammatory markers, and abnormal liver function tests. However, these are nonspecific and may vary depending on the underlying cause of splenomegaly and the type of microorganism involved.
Reference: Splenic Abscess - Infectious Disease Advisor Cross-sectional imaging findings of splenic infections: is … - Springer