A41.5

Clinical Causes: Infections caused by less common Gram-negative bacteria such as Acinetobacter, Enterobacter, or Proteus species. Infections originating in the respiratory, urinary, gastrointestinal, or skin infections that become systemic. Hospital-acquired infections, especially in patients with weakened immune systems or those who have invasive devices like catheters. Use of broad-spectrum antibiotics that can disrupt normal flora, enabling overgrowth of resistant Gram-negative bacteria. Compromised immune defenses due to underlying health conditions such as cancer, diabetes, or chronic kidney disease.

Key Symptoms: Fever or hypothermia (low body temperature). Rapid heartbeat (tachycardia). Rapid breathing (tachypnea). Confusion or disorientation. Low blood pressure (hypotension). Chills and shivering. Weakness or exhaustion. Other signs of systemic infection like nausea, vomiting, or diarrhea.

Diagnosis Path: Diagnosing sepsis caused by Gram-negative organisms involves multiple steps. Medical professionals typically start with a thorough clinical examination, checking vital signs and assessing symptoms. Blood tests are crucial for confirmation, including blood cultures to identify the specific bacteria responsible. Additional laboratory tests may include complete blood count (CBC), lactate levels, and tests to evaluate organ function such as kidney and liver function tests. Imaging studies like X-rays or ultrasounds may be performed if an underlying source of infection is suspected. The goal is to quickly identify the causative organism and assess the severity of the condition.

Treatment Protocols: Treatment for sepsis due to other Gram-negative bacteria generally involves several key components. Immediate administration of broad-spectrum antibiotics is essential to combat the infection while awaiting specific culture results. Once the bacteria are identified, antibiotics may be tailored accordingly. Supportive therapies to stabilize blood pressure and maintain organ function include intravenous fluids and vasopressors. Additional interventions may involve oxygen therapy or mechanical ventilation if breathing is compromised. In some cases, surgery might be necessary to remove the source of infection, such as abscesses or infected tissues. Managing underlying conditions and close monitoring in an intensive care setting can improve outcomes.