MICU Exam LATTEST UPDATE 2024-2025 QUESTIONS AND
ANSWERS 100% CORRECT
ARDS findings - ANSWER: INFLAMMATORY
Acute
CXR - Bilateral infiltrates
PaO2/FiO2 <300mmHg
Predisposing condition
Nothing else explains
ARDS - WHAT TO SEE TO DIAGNOSE - ANSWER: Lavage
CBC: 80% neutrophils
Proteinacious fluid
ARDS - What to Ignore - ANSWER: PCWP
VENTING ARDS: - ANSWER: lung infiltration happens because the posterior portions of the lungs are
gravidy dependent (Deadspace: volume of ventilated air not participating in gas exchange)
Anatomical: Nose, trachea, bronchi
Physiological: Alveoli not paricipating in gas exchange So pushing air just vents the anterior portions
Overdisdentioin causes Ventilator Related Injury NOT Barotrauma
VENTILATION GOALS - ANSWER: TIDAL VOLUME: 6ml/Kg PBW
PlPressure: 30cm H20
SpO2: 88% -95%
pH: 7.35 - 7.45
ARDS CAUSE OF DEATH - ANSWER: Multiorgan failure
Number of organs that fail from systemic inflammation predict mortality (adults)
IN pediatric patients, progosis is mesured by FiO2 and PaO2
WHAT IS HYPOXEMIA - ANSWER: Hemoglobin saturation <60%
, MICU Exam LATTEST UPDATE 2024-2025 QUESTIONS AND
ANSWERS 100% CORRECT
NON INVASIVE FiO2 PERCENTAGES - ANSWER: NASAL CANNULA: **Number 1-6**; 20% -40% o2
VENTILATED FACE MASK: Number 6-10; 40% - 60% o2
NON-REBREATHER: Number 10-15; 60% - 80% o2
NONINVASIVE VENTILATION
(Tight Fitting Mask - reduces intubation rates and complications, mortality in Hypoxemic Respriatory
Failure) - ANSWER: HF Nasal Cannula
CPAP - PeeP only, oxygenation (CHF, OSA)
BiPAP - Expiratory PosAirPRessure and Inspiratory PosAirPressure (COPD)
NonInvasive Vent WHO IS IT NOT GOOD FOR - ANSWER: Unresponsive
Facial Trauma
Circulatory mess
Impending cardiac or respiratory arrest
Lots of secretions
NonInvVent - Good for - ANSWER: OSA
CHF
COPD exacerbations
ASTHMA (early)
Hyperinflates at the end of expiration, makes for dynamic hyperinflation
POSITIVE PRESSURE
WHAT IS IT GOOD FOR - ANSWER: Reducing preload, reducing ventricular filling by increasing
pulmonary vascular resistance
Decreasing pressure gradient for venous flow into the thorax
Increases interabdominal pressure by pushing diaphragm down
HOWEVER
A failing heart has increased preload with positive pressure ventilation
ANSWERS 100% CORRECT
ARDS findings - ANSWER: INFLAMMATORY
Acute
CXR - Bilateral infiltrates
PaO2/FiO2 <300mmHg
Predisposing condition
Nothing else explains
ARDS - WHAT TO SEE TO DIAGNOSE - ANSWER: Lavage
CBC: 80% neutrophils
Proteinacious fluid
ARDS - What to Ignore - ANSWER: PCWP
VENTING ARDS: - ANSWER: lung infiltration happens because the posterior portions of the lungs are
gravidy dependent (Deadspace: volume of ventilated air not participating in gas exchange)
Anatomical: Nose, trachea, bronchi
Physiological: Alveoli not paricipating in gas exchange So pushing air just vents the anterior portions
Overdisdentioin causes Ventilator Related Injury NOT Barotrauma
VENTILATION GOALS - ANSWER: TIDAL VOLUME: 6ml/Kg PBW
PlPressure: 30cm H20
SpO2: 88% -95%
pH: 7.35 - 7.45
ARDS CAUSE OF DEATH - ANSWER: Multiorgan failure
Number of organs that fail from systemic inflammation predict mortality (adults)
IN pediatric patients, progosis is mesured by FiO2 and PaO2
WHAT IS HYPOXEMIA - ANSWER: Hemoglobin saturation <60%
, MICU Exam LATTEST UPDATE 2024-2025 QUESTIONS AND
ANSWERS 100% CORRECT
NON INVASIVE FiO2 PERCENTAGES - ANSWER: NASAL CANNULA: **Number 1-6**; 20% -40% o2
VENTILATED FACE MASK: Number 6-10; 40% - 60% o2
NON-REBREATHER: Number 10-15; 60% - 80% o2
NONINVASIVE VENTILATION
(Tight Fitting Mask - reduces intubation rates and complications, mortality in Hypoxemic Respriatory
Failure) - ANSWER: HF Nasal Cannula
CPAP - PeeP only, oxygenation (CHF, OSA)
BiPAP - Expiratory PosAirPRessure and Inspiratory PosAirPressure (COPD)
NonInvasive Vent WHO IS IT NOT GOOD FOR - ANSWER: Unresponsive
Facial Trauma
Circulatory mess
Impending cardiac or respiratory arrest
Lots of secretions
NonInvVent - Good for - ANSWER: OSA
CHF
COPD exacerbations
ASTHMA (early)
Hyperinflates at the end of expiration, makes for dynamic hyperinflation
POSITIVE PRESSURE
WHAT IS IT GOOD FOR - ANSWER: Reducing preload, reducing ventricular filling by increasing
pulmonary vascular resistance
Decreasing pressure gradient for venous flow into the thorax
Increases interabdominal pressure by pushing diaphragm down
HOWEVER
A failing heart has increased preload with positive pressure ventilation
