A patient with acute kidney injury presents with hyperkalemia, pulmonary edema, and confusion. Which of the following interventions should the nurse prioritize to address the hyperkalemia and prevent cardiac complications?

A) Administer intravenous furosemide to reduce fluid overload

B) Initiate continuous renal replacement therapy to remove excess potassium

D) Provide supplemental oxygen to improve oxygen saturation

A patient with acute kidney injury and hyperkalemia is being treated with insulin and glucose to shift potassium intracellularly. Which additional intervention should the nurse prioritize to prevent life-threatening complications associated with hyperkalemia?

C) Administer intravenous calcium gluconate.

A) Administer oral sodium polystyrene sulfonate.

B) Prepare the patient for emergent hemodialysis.

C) Administer intravenous calcium gluconate.

D) Encourage increased oral fluid intake.

A patient with persistent hyperkalemia and metabolic acidosis is being prepared for hemodialysis. Which nursing intervention is most important to perform prior to initiating dialysis?

B) Ensure the dialysis access site is patent and free from infection

A) Administer a bronchodilator to improve respiratory function

B) Ensure the dialysis access site is patent and free from infection

C) Restrict fluid intake to prevent further fluid overload

D) Monitor for signs of hypoglycemia during dialysis preparation

A patient with persistent hyperkalemia, metabolic acidosis, and pulmonary edema is scheduled for hemodialysis. Which nursing intervention should be prioritized to ensure patient safety before initiating dialysis?

B) Monitor the patient's vital signs and oxygen saturation closely

A) Administer sodium bicarbonate to correct acidosis

B) Monitor the patient's vital signs and oxygen saturation closely

C) Restrict fluid intake to prevent further fluid overload

D) Educate the patient about the hemodialysis procedure

A patient undergoing hemodialysis presents with confusion and lethargy, jugular venous distension, peripheral edema, and respiratory distress. Which nursing intervention should be prioritized to address the underlying cause of these symptoms?

B) Increase the dialysis flow rate to enhance clearance.

A) Administer a diuretic to reduce fluid overload.

B) Increase the dialysis flow rate to enhance clearance.

C) Monitor the patient for signs of hypotension during dialysis.

D) Administer sodium bicarbonate to correct metabolic acidosis.

A patient undergoing hemodialysis for acute renal failure exhibits signs of confusion and lethargy, has elevated serum creatinine and BUN levels, and persistent metabolic acidosis. During the dialysis session, the nurse observes a sudden drop in the patient's blood pressure. What is the most appropriate initial nursing intervention?

C) Elevate the patient's legs to promote venous return.

A) Administer a bolus of intravenous saline to address hypotension.

B) Decrease the rate of the dialysis to stabilize hemodynamics.

C) Elevate the patient's legs to promote venous return.

D) Stop the dialysis session and notify the healthcare provider immediately.

A patient undergoing hemodialysis has developed hypotension with a blood pressure of 96/64 mmHg and a heart rate of 120 beats per minute. Laboratory results show a persistent elevated potassium level of 5.9 mEq/L. Which of the following nursing interventions is the most appropriate to prioritize at this time?

C) Administer calcium gluconate to stabilize cardiac membranes.

A) Administer an additional fluid bolus of 500 mL normal saline.

B) Prepare the patient for emergency dialysis to rapidly correct hyperkalemia.

C) Administer calcium gluconate to stabilize cardiac membranes.

D) Initiate a low-potassium diet to manage hyperkalemia over time.

A patient has just completed a hemodialysis session and is experiencing hypotension with a blood pressure of 96/64 mmHg and tachycardia with a heart rate of 120 beats per minute. The patient also has an elevated potassium level of 5.9 mEq/L. What is the most appropriate nursing intervention to prioritize for this patient?

A) Administer a fluid bolus of 500 mL normal saline to address hypotension

B) Prepare to administer calcium gluconate to stabilize cardiac membrane potential

C) Encourage the patient to increase oral fluid intake

D) Immediately notify the nephrologist without other interventions

A patient with acute renal injury exhibits signs of fluid overload and persistent tachycardia despite receiving a normal saline bolus. Which nursing intervention should be prioritized to address the patient's current condition?

C) Adjust the diuretic regimen to promote fluid removal.

A) Administer additional fluids to improve renal perfusion.

B) Initiate oxygen therapy to support respiratory function.

C) Adjust the diuretic regimen to promote fluid removal.

D) Increase the patient's physical activity to enhance circulation.

A patient with acute renal injury is showing signs of fluid overload and persistent tachycardia despite interventions. Which nursing intervention should be prioritized to address the patient's current condition?

C) Adjust the diuretic regimen as per the nephrologist's recommendations and monitor urine output closely.

A) Administer an additional normal saline bolus to improve blood pressure.

B) Increase the patient's oxygen therapy to maintain oxygen saturation above 98%.

C) Adjust the diuretic regimen as per the nephrologist's recommendations and monitor urine output closely.

D) Initiate continuous cardiac monitoring and prepare for potential cardioversion due to suspected arrhythmias.

acute renal injury - Nursing Case Study

Pathophysiology

• Primary mechanism: Reduced renal perfusion - Acute kidney injury (AKI) often begins with decreased blood flow to the kidneys, leading to insufficient oxygen and nutrient delivery, impairing glomerular filtration and renal function.

• Secondary mechanism: Tubular injury - Hypoperfusion and ischemia can damage renal tubules, causing necrosis and compromised reabsorption and secretion functions, which further exacerbate renal impairment.

• Key complication: Fluid and electrolyte imbalance - As renal function declines, the body struggles to maintain homeostasis, leading to dangerous imbalances such as hyperkalemia and fluid overload, which can have systemic effects and require urgent intervention.

Patient Profile

Demographics:

58-year-old male, construction worker

History:

• Key past medical history: Hypertension, Type 2 Diabetes, Chronic Back Pain

• Current medications: Lisinopril, Metformin, Ibuprofen

• Allergies: Penicillin

Current Presentation:

• Chief complaint: Decreased urine output and swelling in legs

• Key symptoms: Fatigue, nausea, shortness of breath, confusion, decreased appetite

• Vital signs: Blood pressure 160/95 mmHg, heart rate 105 bpm, respiratory rate 22 breaths per minute, temperature 99.1°F, oxygen saturation 94% on room air

Section 1

After the initial assessment, the healthcare team ordered a series of diagnostic tests to further evaluate the extent of the patient's acute kidney injury and associated complications. The laboratory results revealed a serum creatinine level of 3.8 mg/dL, significantly elevated from the patient's baseline, indicating severe renal impairment. Blood urea nitrogen (BUN) was also elevated at 65 mg/dL. Electrolyte panel showed hyperkalemia with a potassium level of 6.2 mEq/L, which poses a risk for cardiac arrhythmias. Urinalysis indicated the presence of proteinuria and hematuria, suggesting tubular damage. An ultrasound of the kidneys revealed no structural abnormalities, ruling out obstructive causes and reinforcing the diagnosis of acute tubular necrosis due to ischemia.

The patient's condition continued to evolve with the development of pulmonary edema, as evidenced by bilateral crackles on lung auscultation and increased respiratory distress. Oxygen saturation dropped to 90% on room air, necessitating supplemental oxygen therapy. The patient's mental status declined further, with increased confusion and lethargy, likely due to the accumulation of uremic toxins and worsening electrolyte imbalance. Blood pressure remained elevated at 168/100 mmHg, complicating the fluid overload and placing additional stress on the cardiovascular system.

In response to these findings, the clinical team initiated interventions aimed at correcting the fluid and electrolyte imbalances. Immediate measures included the administration of intravenous calcium gluconate to stabilize cardiac membranes and insulin with glucose to temporarily shift potassium intracellularly. Diuretics were cautiously administered to manage fluid overload, though their efficacy was limited by renal dysfunction. Continuous monitoring was essential, and the potential need for renal replacement therapy, such as dialysis, was discussed as a next step, considering the patient's deteriorating condition and persistent metabolic derangements.

Section 2

As the healthcare team continued to monitor the patient closely, new complications began to emerge. Despite initial interventions, the patient's hyperkalemia persisted, with potassium levels only marginally reduced to 5.8 mEq/L. Additionally, the patient developed metabolic acidosis, as indicated by arterial blood gas analysis showing a pH of 7.28 and a bicarbonate level of 18 mEq/L. This acid-base disturbance further contributed to the patient's confusion and lethargy, as the acidemia began to affect cerebral function.

The patient's respiratory status continued to deteriorate, with increased oxygen requirements to maintain adequate saturation levels, now requiring a high-flow nasal cannula at 40% FiO2 to keep oxygen saturation above 92%. Despite fluid management efforts, the pulmonary edema worsened, evidenced by the development of frothy sputum and further decreased breath sounds in the lung bases upon auscultation. These signs, along with the patient's declining mental status, prompted the team to reassess their approach.

In light of these escalating complications, the decision was made to initiate renal replacement therapy. Hemodialysis was chosen as the most appropriate modality to address the severe metabolic derangements, including persistent hyperkalemia, acidosis, and fluid overload. This decision was based on the patient's rapid clinical decline and the limited response to conservative measures. The initiation of dialysis marked a critical point in the patient's management, offering a chance to stabilize the internal environment while providing time for the kidneys to potentially recover from the acute injury. As preparations for dialysis proceeded, the clinical team remained vigilant, ready to manage potential complications associated with the procedure.

Section 3

As the patient was prepared for hemodialysis, the healthcare team conducted a thorough initial assessment to establish a baseline prior to the procedure. Vital signs indicated a blood pressure of 148/92 mmHg, a heart rate of 110 beats per minute, and a respiratory rate of 28 breaths per minute, reflecting the patient’s ongoing respiratory distress. The physical examination revealed jugular venous distension and peripheral edema, consistent with fluid overload. Neurological assessment showed continued confusion and lethargy, with the patient responding only to verbal stimuli, emphasizing the impact of the metabolic acidosis on cerebral function.

Additional laboratory results returned, revealing a further decline in renal function with serum creatinine levels now elevated to 4.2 mg/dL, and blood urea nitrogen (BUN) at 68 mg/dL, reinforcing the need for urgent dialysis. Electrolyte imbalances persisted, with magnesium levels slightly elevated at 2.8 mg/dL, which could further affect cardiac rhythm and neuromuscular function. The patient's arterial blood gas results showed no significant improvement in acidosis with a pH of 7.26 and bicarbonate still low at 17 mEq/L, underscoring the critical need for metabolic correction.

As dialysis commenced, the team closely monitored the patient for any immediate complications such as hypotension, which could further compromise renal perfusion. Despite the initial challenges, the patient showed gradual improvement in respiratory effort and mental clarity as the session progressed. Oxygen requirements decreased slightly, suggesting a reduction in pulmonary congestion. The team remained cautious yet optimistic, recognizing that while dialysis was a pivotal intervention, continuous monitoring and adjustment of the treatment plan would be essential to address any new complications and support the patient’s recovery trajectory.

Section 4

As the hemodialysis session concluded, the healthcare team continued their vigilant assessment of the patient's condition. While the patient's respiratory effort improved and mental clarity began to return, new complications emerged that required immediate attention. During the post-dialysis evaluation, the patient demonstrated signs of hypotension with blood pressure dropping to 96/64 mmHg. This sudden decrease in blood pressure raised concerns about the patient's hemodynamic stability and potential effects on renal perfusion. The patient's heart rate increased to 120 beats per minute, suggesting a compensatory response to the reduced blood pressure.

Concurrently, laboratory results indicated that while serum creatinine and BUN levels showed a slight decrease to 3.8 mg/dL and 60 mg/dL respectively, electrolyte imbalances persisted. The potassium level remained elevated at 5.9 mEq/L, presenting a risk for cardiac arrhythmias. The nursing team initiated a fluid bolus of 500 mL normal saline to address the hypotensive episode while continuing to monitor cardiac rhythm closely for any signs of arrhythmia. The patient's neurological status improved slightly, with more consistent responses to verbal stimuli, yet the team remained concerned about the persistent electrolyte imbalances and their potential systemic effects.

In response to these developments, the healthcare team huddled to re-evaluate the patient's care plan. They determined that close monitoring of fluid status and a reassessment of electrolyte management were crucial. The nephrologist recommended adjusting the dialysis prescription to achieve more effective clearance of potassium and address the patient's ongoing metabolic acidosis. The team also planned for frequent blood pressure and cardiac monitoring, ensuring that any further episodes of hypotension or arrhythmias could be promptly addressed. This proactive approach underscored the importance of dynamic clinical reasoning and adaptability in managing the complexities of acute renal injury and its complications.

Section 5

As the healthcare team continued to monitor the patient post-intervention, they noted a gradual stabilization of blood pressure following the administration of the normal saline bolus, with readings improving to 104/68 mmHg. Despite this positive change, the patient's heart rate remained elevated at 115 beats per minute, indicating ongoing compensatory tachycardia. These vital sign trends prompted the team to reassess the patient's fluid status and consider potential underlying causes for the persistent tachycardia.

During the reassessment, the team identified subtle changes in the patient's respiratory pattern, with a slight increase in respiratory rate to 22 breaths per minute and occasional use of accessory muscles. Although the patient's oxygen saturation remained stable at 95% on room air, these respiratory changes suggested the possibility of fluid overload, especially in the context of recent fluid administration and ongoing renal impairment. The team decided to conduct a bedside ultrasound to evaluate for signs of pulmonary congestion and to further explore the patient's fluid balance.

The ultrasound findings revealed mild pulmonary edema, corroborating the team's suspicions of fluid overload. In light of these findings, the nephrologist recommended an adjustment in the patient's diuretic regimen to facilitate fluid removal while continuing to monitor electrolyte levels closely. Additionally, the team emphasized the need for vigilant monitoring of the patient's respiratory status and cardiac rhythm, given the elevated risk for arrhythmias due to persistent hyperkalemia. This scenario highlighted the importance of integrating clinical data with dynamic assessment to effectively manage the evolving complexities of acute renal injury.