Indications for NIPPV ✅Acute hypercapnic RF in COPD
Cardiogenic Pulmonary Edema
Immunosuppressed patients with pulmonary infiltrates, fever and ARespFX
Ventilator management of O2 ✅Manipulation of FiO2 or PEEP
Ventilator Management of CO2 ✅Manipulation of tidal volume and rate
To retain Co2--> Lower rate/less Vt
To blow off CO2--.> increase rate/Vt
PUSH/PULL SIGN ✅Push: blood in lung space displaces lung to the other side.
Tracheal deviation. Hemothorax
Pull sign: Air vacuum pulls to affected side. Pneumothorax
Types of Acute Resp Failure ✅Hypoxemia vs Hypercabia
Hypoxemic RF V/Q Mismatch ✅Most common cause
PNA, PE, ARDS, Alveolar Collapse, Pulm AV communication
Increased A-a gradient
pulmonary vasoconstriction (reduce perfusion) to the area of the lung with reduced
ventilation
hypoxic pulmonary vasoconstriction- unique to pulm vasculature
responsive to O2 therapy
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