Updates in Critical Care-Slides

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Critical Care Updates 2024 by Dr. Meshell Johnson addresses recent advances in ARDS, cardiac arrest, sepsis, steroids, and miscellaneous ICU care topics, illustrated through a clinical case of a 75-year-old man with community-acquired pneumonia (CAP) who develops ARDS and a subsequent cardiac arrest.

<strong>ARDS:</strong>  
The Berlin definition and recent 2023 updates were reviewed, emphasizing criteria such as acute onset within one week of a clinical insult, bilateral infiltrates not fully explained by cardiac failure or fluid overload. Management guidelines strongly recommend high-flow nasal oxygen (HFNO) over conventional oxygen therapy to prevent intubation in non-intubated patients, low tidal volume ventilation (4-8 mL/kg predicted body weight) for intubated patients, prone positioning in moderate to severe ARDS, avoidance of high-pressure recruitment maneuvers, and cautious use of neuromuscular blockade. ECMO referral is advised for appropriate candidates.

<strong>Cardiac Arrest:</strong>  
Post-arrest management updates include evidence that mild hypercapnia (PaCO2 50-55 mmHg) does not improve neurological outcomes compared to normocapnia (PaCO2 35-45 mmHg). Also, extending device-based fever prevention beyond 24 hours to 72 hours does not alter mortality or neurological disability. ECMO use in selected shockable rhythm arrests without ROSC after prolonged CPR is under investigation.

<strong>Sepsis:</strong>  
Beta-blockers like landiolol in septic shock with tachycardia showed no benefit and potentially increased harm, leading to early trial termination. However, continuous hydrocortisone combined with fludrocortisone for septic shock demonstrated improved survival and vasopressor-free days, aligning with prior studies and supporting corticosteroid use in chosen patients.

<strong>Steroids in Severe CAP:</strong>  
A randomized trial found early hydrocortisone reduced 28-day mortality and decreased the need for intubation and vasopressors in ICU patients with severe CAP.

<strong>Other ICU Updates:</strong>  
Tight glycemic control targeting 80-110 mg/dL in critically ill patients did not improve ICU length of stay or survival compared to liberal control (up to 215 mg/dL), with less hypoglycemia than prior studies.

Dr. Johnson concludes by challenging traditional dogma such as intubating all patients with GCS ≤8, highlighting ongoing evolution in critical care management guided by emerging evidence and clinical trials.
Keywords
ARDS
Berlin definition 2023
high-flow nasal oxygen
low tidal volume ventilation
prone positioning
cardiac arrest management
mild hypercapnia
sepsis treatment
hydrocortisone and fludrocortisone
steroids in severe CAP