ARDS Part 1 Flashcards
ARDS affect what part of the lungs
Alveoli
This is a form of acute respiratory failure
(ALI) ACUTE LUNG INJURY
this is the most severe subset of ALI
ARDS
In ARDS the what happens to the alveolar-capillary
disrupted or destroyed
ALI is defined by ______ and presence of ______
Hypoxemia and bilateral infiltrates
Ards is commonly affect what type of patient
Critically ill or injured
ARDS starts with ______ of the lung tissue
Swelling
In ARDS there are ______ in the tiny air sacs impeding gas exchange
Fluids
In ARDS exudative phase occurs in the first __ days after exposure to ARDS risk factors
7
What causes tachypnea and increased work of breathing
Respiratory muscle fatigue and respiratory failure
Dyspnea is due _____
Increased work of breathing
Proliferative phase starts from day __-__
7-21
During what stage patients recover rapidly and liberated from mech vents
Proliferative
In proliferative phase even patient may improve they can still experience the following symtoms
Tachypnea, dyspnea, hypoxemia
What type of cell proliferates in the alveolar basement membrane to synthesise pulmonary surfactant to prevent alveolar collapse before converting to type 1 which lines the alveolar wall
Type 2 pneumocyte
Patients with ards recover lung function within how many weeks
3-4 weeks
During this phase, patient may need for long term mechanical ventilation support and supplemental oxygen
Fibrotic phase
In fibrotic phase there is what lung damage
Extensive alveolar duct and interstitial fibrosis, mark disruption of acinar architecture leading to emphysema like changes with large bullae
What caused progressive vascular occlusion and pulmonary HTN
Intimal fibroproliferation in the pulmonary microcirculation
Pulmonary HTN and vascular occlusion can cause the following:
Pneumothorax, decreased lung compliance and increased pulmonary dead space
