atelectasis, ARDS, and ARF Flashcards
V or P: open air-filled alveoli
ventilation
V or P: intact alveolar capillary membranes
ventilation
V or P: normal blood flow through the pulmonary vasculature
perfusion
goal of providing respiratory assistance
prevent cell death (hypoxia)
T/F ventilation and perfusion must be balanced
true
atelectasis
closure or collapse of alveoli
V or P: atelectasis
ventilation; cannot exchange O2 and CO2
acute respiratory distress syndrome (ARDS)
the build up of fluid in the alveoli
T/F: the patient responds to O2 therapy
false: the patient is refractory to therapy
Examples of ARDS: Lung tissue injury
aspiration, COVID, drug ingestion, embolism, hematologic disorders, localized infection, pancreatitis, prolonged inhalation of high concentrations, sepsis, shock, trauma, E-cigarettes
the process of ARDS
lung injury > inflammation > cell and chemical mediator > collapsed alveoli > increased resistance > decreased lung compliance
the circle of ARDS
severe hypoxia > shunt > refractory > acute lung injury > inflammation > hypoxia
what does hypoxemia represent
pulmonary edema
S&S of hypoxemia
rapid onset of severe dyspnea, SPO2 90-92%, increased RR, HR, headache, restlessness, confusion, SOB
medical interventions for ARDS
treat underlying cause, supplemental O2, support severe respiratory dysfunction