Stoelting's Anesthesia and Co-Existing Disease · 8th Edition
Infectious Diseases
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ⓘ This audio and summary are simplified educational interpretations and are not a substitute for the original text.
Key Takeaways
- Surgical site infection prevention requires prophylactic antibiotics within one hour preoperatively combined with glycemic control, normothermia, and adequate tissue perfusion.
- Central line infections are prevented through hand hygiene, maximum sterile barriers, chlorhexidine antisepsis, and avoiding femoral insertion sites.
- Elective surgery must be postponed during sepsis unless the procedure provides source control such as drainage or removal of ischemic tissue.
- Clostridium difficile spores require soap and water hand cleaning rather than alcohol-based sanitizers, and necrotizing soft tissue infections demand emergent surgical debridement.
- Tuberculosis and emerging pathogens like coronavirus require negative-pressure operating rooms, specialized respiratory protection, and modified anesthetic techniques during airway procedures.
- Immunocompromised patients experience shifting infection patterns from bacterial and fungal threats early to opportunistic pathogens during moderate immunosuppression.
Chapter SummaryWhat this audio overview covers
Infectious disease management in the perioperative setting requires understanding both the pathophysiology of infections and evidence-based prevention strategies that reduce patient morbidity and mortality. Surgical site infections occur in 2-5% of clean extra-abdominal procedures and up to 20% of intra-abdominal surgeries, with Staphylococcus aureus as the predominant causative organism; prevention depends on timely prophylactic antibiotics administered within one hour before incision, glycemic control, normothermia maintenance, and adequate tissue oxygenation. Central line-associated bloodstream infections represent a major nosocomial threat addressed through hand hygiene protocols, maximum sterile barrier precautions, chlorhexidine skin antisepsis, and avoidance of femoral catheter sites. Sepsis exists on a continuum progressing from systemic inflammatory response syndrome through severe sepsis with organ dysfunction to septic shock characterized by refractory hypotension; elective surgery should be postponed until sepsis resolves unless the procedure itself provides source control such as abscess drainage or removal of ischemic tissue. Specific organ system infections demand tailored management approaches, including recognition that Clostridium difficile spores resist alcohol-based sanitizers requiring soap and water hand hygiene, that necrotizing soft tissue infections necessitate emergent extensive surgical debridement despite deceptively mild cutaneous findings, and that tuberculosis transmission risk during airway manipulation mandates negative-pressure operating rooms and N95 respiratory protection. Immunocompromised populations including solid organ transplant recipients and patients with advanced HIV infection face evolving infection risks that shift from bacterial and fungal threats in early periods to opportunistic pathogens during months of moderate immunosuppression and back toward community-acquired infections during later periods. Emerging infectious threats including Ebola virus disease, Mycobacterium chimaera contamination of cardiopulmonary bypass heater-cooler units with delayed endocarditis presentation, and coronavirus disease require heightened infection control vigilance, specialized personal protective equipment, and modified anesthetic techniques including negative-pressure room protocols and powered air-purifying respirator use during high-risk airway procedures.