system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
An 86-year-old male with a history of hypertension and hyperlipidemia is sent to the hospital from the skilled nursing facility due to fever, confusion, and decreased urine output. Urinalysis shows 12-18 WBC/hpf with occasional lymphocytes. Urine and blood cultures grow out gram-negative, motile, urease positive rods. What component in the identified bacteria is primarily responsible for causing the innate immune response seen in this patient?
assistant
Outer membrane