Common Complications of ICU Admission in Critical Care Medicine (2024)

POST-INTENSIVE CARE SYNDROME & OTHER LONG-TERM PHYSICAL AND COGNITIVE DISABILITY

  • Definition: Generally defined as new or worsening cognitive, psychiatric, and/or physical function

    • - Cognitive: Memory, executive function

    • - Psychiatric: Depression, anxiety, PTSD

    • - Physical: ICU-acquired weakness is most common

  • Risk factors:

    • - Pre-existing factors: Neuromuscular disorders, prior cognitive impairment, psychiatric disease, frailty, medical comorbidities

    • - ICU-specific factors: Mechanical ventilation, delirium, sepsis, ARDS

  • Management:

    • - Daily sedation interruptions, delirium avoidance and management, early ambulation and physical therapy, nutritional optimization, avoidance of hypoglycemia and hypoxemia

    • - Post-discharge treatment with physical therapy and rehab, occupational therapy, social support, mental health services

  • Clinical importance:

    • - Survivors of critical illness report lower quality of life (QOL) scores

    • - Family members of survivors report lower QOL scores

    • - Survivors of critical illness have higher likelihood of rehospitalization, higher unemployment rates, and higher overall mortality

COMPLICATIONS ASSOCIATED WITH MECHANICAL VENTILATION

  • See “Intubation and Mechanical Ventilation” under Key Medications and Interventions

DELIRIUM

  • Definition: Sudden, acute onset, fluctuating changes in consciousness and cognition

    • - Can be hypoactive (diminished responsiveness, apathy) or hyperactive (agitation)

  • Importance:

    • - Delirium increases hospital length of stay and mortality (3× in mechanically ventilated patients), long-term cerebral dysfunction, SNF placement, and dementia after ICU discharge

    • - Common: Prevalence of 50% in ICU patients

  • Risk factors:

    • - Nonmodifiable: Older age, cognitive impairment/dementia, substance use disorder

    • - Modifiable: Medications, pain, acute renal failure, critical illness, environment, weakness, extra drains, lines and tubes

  • Assessment: CAM-ICU (Confusion Assessment Method): validated, RN-driven protocol

  • Management:

    • - Reverse underlying cause(s)

    • - Maximize nutrition

    • - Reorientation

    • - Correct sensory deficits (e.g., replace hearing aids, glasses)

    • - Limit extraneous stimuli in the environment

    • - Promote normal sleep pattern

    • - Avoid restraints if possible. Use bedside coaches/sitters

    • - Pharmacologic management (if all earlier interventions fail): Use with caution, best indication is to protect patient/staff safety if pulling at devices or interfering with care; no evidence that antipsychotics reduce duration of delirium or mortality

      • Antipsychotics (haloperidol, quetiapine, risperidone)

      • Benzodiazepines only if withdrawal is suspected

INFECTIONS

Central line-associated bloodstream infections (CLABSI)

  • Pathogens:

    • - Typically skin flora with coagulase-negative staph, S. aureus, enterococci. Infections with Gram-negative organisms (E. coli, Klebsiella, Pseudomonas) less common

    • - Often infection from skin colonization but can be from hematogenous spread from bloodstream infection occurring from another, distant focus

  • Risk factors: Duration of use, catheter material, insertion conditions, site care, placement site (subclavian < internal jugular ≤ femoral), host immunodeficiency

  • Clinical importance: Nosocomial infection associated with higher morbidity and mortality

  • Management: Empiric systemic antibiotics, catheter removal. May need ID consultation depending on the organism/clinical situation.

Catheter-associated UTI (CAUTI)

  • Definition: Culture growth of ≥1000 CFU/mL with symptoms compatible with UTI in a patient with an indwelling urethral or suprapubic catheter OR in a patient who had ...

Common Complications of ICU Admission in Critical Care Medicine (2024)
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