Burns - Nursing Case Study
Pathophysiology
• Primary mechanism: Thermal injury causes coagulation of proteins and cellular damage, leading to loss of skin integrity and barrier function. This results in increased permeability, fluid loss, and risk of infection.
• Secondary mechanism: The inflammatory response is activated, releasing cytokines and mediators, causing vasodilation and increased capillary permeability, which leads to edema and hypovolemia. This systemic response can result in burn shock if not managed.
• Key complication: Loss of fluid and proteins from the vascular compartment can cause hypovolemic shock, characterized by decreased cardiac output and tissue perfusion, necessitating prompt fluid resuscitation to stabilize the patient.
Patient Profile
Demographics:
32-year-old male, construction worker
History:
• Key past medical history: Hypertension, smoker for 10 years
• Current medications: Lisinopril 10 mg daily
• Allergies: Penicillin
Current Presentation:
• Chief complaint: Severe pain and blistering on arms and chest after a workplace accident
• Key symptoms: Redness, swelling, blister formation, fever, and increasing pain in affected areas
• Vital signs: Temperature 101.3°F, Heart rate 110 bpm, Blood pressure 145/90 mmHg, Respiratory rate 22 breaths per minute
Section 1
As the patient is admitted to the burn unit, an initial comprehensive assessment is conducted to evaluate the severity and extent of his injuries. Upon examination, the burned areas on the arms and chest are classified as partial-thickness burns, with significant blistering and erythema covering approximately 25% of his total body surface area (TBSA). The blisters are tense and fluid-filled, indicating that the dermis is still viable, but there is a risk of progression to deeper damage if not properly managed. Additionally, his skin is hot and dry to the touch, correlating with his elevated temperature, suggesting a systemic inflammatory response and potential infection.
Laboratory results reveal elevated white blood cell count at 15,000/mm³, supporting the suspicion of an infectious process possibly developing in the burn wounds. Electrolyte imbalances are noted with hyponatremia at 132 mEq/L and hyperkalemia at 5.6 mEq/L, indicating the body's loss of fluids and electrolytes due to increased capillary permeability and fluid shifts. These findings, combined with his elevated heart rate and low urine output of 20 mL/hr, highlight early signs of hypovolemic shock. The priority is aggressive fluid resuscitation using lactated Ringer's solution to restore intravascular volume and prevent shock progression.
The patient's pain remains severe, and he reports difficulty breathing as edema worsens, potentially compromising airway patency. The multidisciplinary team discusses the necessity for close monitoring of respiratory status and the potential need for intubation if respiratory distress continues to escalate. The nursing team implements an analgesic regimen tailored to his needs and collaborates with the burns team to initiate debridement and topical antimicrobial therapy to minimize infection risk. As the patient’s condition evolves, the team remains vigilant for further complications such as acute respiratory distress syndrome (ARDS) or sepsis, necessitating ongoing reassessment and intervention adjustments.
Section 2
As the patient's care progresses in the burn unit, the clinical team observes a change in his status, marked by worsening respiratory distress. Despite initial interventions, his respiratory rate has increased to 30 breaths per minute, and oxygen saturation has dropped to 88% on room air. Auscultation reveals diminished breath sounds in the lower lobes with the presence of crackles, indicating fluid accumulation and possible pulmonary complications. The nursing team promptly administers supplemental oxygen, but concerns about airway compromise and the potential development of acute respiratory distress syndrome (ARDS) prompt a reassessment of his respiratory management plan.
Further diagnostic results from arterial blood gas analysis indicate a partial pressure of oxygen (PaO2) of 58 mmHg and a partial pressure of carbon dioxide (PaCO2) of 48 mmHg, confirming hypoxemia and respiratory acidosis. This suggests the patient's ventilation is inadequate, likely due to the increasing edema and inflammatory response affecting lung function. The multidisciplinary team, including a respiratory therapist and intensivist, convenes to discuss the urgent need for mechanical ventilation. Intubation is performed to ensure airway protection and to provide adequate oxygenation and ventilation support.
Meanwhile, the patient's hemodynamic status shows slight improvement with fluid resuscitation, as his heart rate stabilizes to 96 beats per minute, but urine output remains low at 25 mL/hr, signaling ongoing renal hypoperfusion. Attention turns to optimizing fluid management, while continuing vigilant monitoring for signs of sepsis and other potential complications. Continuous reassessment of the patient's response to these interventions will be crucial in guiding further treatment decisions, ensuring a comprehensive approach to mitigate the risk of additional complications such as multi-organ dysfunction.
Section 3
As the patient's care continues in the burn unit, the clinical team notices a significant change in his hemodynamic status. Despite aggressive fluid resuscitation, the patient's blood pressure begins to drop, measured at 88/56 mmHg, indicating potential onset of shock. Concurrently, laboratory results reveal elevated lactate levels at 4.2 mmol/L, suggesting tissue hypoxia and metabolic acidosis. These findings prompt the team to consider the possibility of septic shock, given the patient's extensive burn injuries and compromised skin barrier, which increase his risk for infection.
In response to these developments, the medical team initiates a sepsis protocol, starting with broad-spectrum antibiotics to target potential pathogens. Additionally, a norepinephrine drip is administered to support his blood pressure and improve perfusion to vital organs. The nursing team closely monitors the patient's vital signs, urine output, and mental status, noting any changes that could indicate further deterioration or improvement. The patient's temperature is recorded at 38.9°C, consistent with a possible infectious process, further supporting the diagnosis of sepsis.
As the patient is transitioned to mechanical ventilation, careful titration of sedation is required to ensure patient comfort while maintaining optimal respiratory support. The multidisciplinary team emphasizes the importance of vigilant monitoring and reassessment to adjust the treatment plan as necessary. Ongoing collaboration between nursing, respiratory therapy, and medical staff is crucial in managing the complex interplay of the patient's pulmonary and hemodynamic challenges. The team's immediate priority is to stabilize the patient, prevent progression to multi-organ dysfunction, and pave the way for gradual recovery.
Section 4
As the medical team continues to manage the patient's care, a change in his status is noted during the next shift assessment. Despite ongoing interventions, the patient's heart rate has increased to 125 beats per minute, and his blood pressure remains on the lower side at 90/58 mmHg, indicating persistent hemodynamic instability. The nursing staff observes that the patient's peripheral perfusion is poor, with cool, clammy extremities and capillary refill time extending beyond 3 seconds. Additionally, the patient's urine output has decreased to 20 mL/hour over the past three hours, raising concerns about renal perfusion and potential acute kidney injury.
Laboratory tests reveal a further increase in lactate levels to 5.0 mmol/L, suggesting worsening metabolic acidosis and insufficient tissue oxygenation. The white blood cell count is elevated at 18,000/mm³, supporting the hypothesis of an infectious process despite antibiotic therapy. Arterial blood gas analysis indicates a pH of 7.31, PaCO2 of 32 mmHg, and HCO3- of 16 mEq/L, confirming a mixed respiratory and metabolic acidosis. These findings suggest that the patient is not responding optimally to the current treatment regimen, prompting the team to consider additional interventions.
The multidisciplinary team gathers to reassess the situation, contemplating the addition of vasopressin to further support blood pressure and improve renal perfusion. An infectious disease specialist is consulted to evaluate the need for antifungal coverage, given the high risk of opportunistic infections in burn patients. The team also discusses the possibility of initiating renal replacement therapy if oliguria persists, aiming to prevent further renal compromise. The immediate goal is to stabilize the patient's hemodynamic status, optimize tissue perfusion, and mitigate the risk of multi-organ dysfunction, while continuously reassessing the effectiveness of the current treatment plan.
Section 5
As the multidisciplinary team implements the revised treatment plan, including the addition of vasopressin to support blood pressure and improve renal perfusion, the patient's condition is closely monitored for signs of stabilization. Over the next few hours, the nursing staff notes a slight improvement in blood pressure readings, now at 98/64 mmHg, although the heart rate remains elevated at 120 beats per minute. Peripheral perfusion continues to be a concern, with the patient's extremities remaining cool and clammy. Capillary refill time shows minimal improvement, now at approximately 3 seconds. Despite these efforts, urine output remains low at 25 mL/hour, suggesting persistent renal insufficiency.
The infectious disease specialist recommends broadening the antimicrobial regimen to include antifungal coverage due to the patient's immunocompromised state and risk for opportunistic infections. A preliminary culture report indicates the presence of gram-positive cocci, raising concerns about a potential bloodstream infection that may be contributing to the patient's hemodynamic instability. In response, the team initiates a targeted antibiotic therapy while awaiting final culture and sensitivity results. Concurrently, the possibility of initiating renal replacement therapy is revisited, given the ongoing oliguria and elevated creatinine levels, which have increased to 2.1 mg/dL.
Despite these adjustments, the patient's lactate levels remain elevated at 4.8 mmol/L, indicating ongoing tissue hypoperfusion. The arterial blood gas analysis shows a slight improvement with a pH of 7.34, PaCO2 of 30 mmHg, and HCO3- of 18 mEq/L, suggesting a partial compensation of the metabolic acidosis. The team remains vigilant, recognizing the fine balance between stabilizing the patient's hemodynamics and preventing further complications. The next steps will involve continuous monitoring and reassessment of the patient's response to the expanded antimicrobial regimen and vasoactive support, with a focus on preventing the progression to multi-organ dysfunction syndrome.