Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Hypoxemia
|
- reduced oxygenation of arterial blood
|
|
|
Hypoxia
|
- reduced oxygenation in tissue cells
|
|
|
Causes of Hypoxemia (4)
|
- decreased FIO2
- hypoventilation (causes hyercapnia - diffusion abnormalities (can be caused by edema/fibrosis) - abnomal ventilation-perfusion*** |
|
|
abnormal ventilation-perfusion
|
- most common cause = shunting- perfusion w/o ventilation
- this is seen in asthma, pneumonia, ARDS due to bronchoconstriction/edema - deadspace ventilation = ventilation w/o perfusion |
|
|
Alveolar Gas equation
|
PaO2= (Patm - Ph2o)(FIO2)-(PaCO2/0.8)
|
|
|
Arterial Oxygen Content
|
PaO2= Hb x Pulse ox x 1.34 + (PaO2 x 0.003)
|
|
|
CT angiography
|
- this s the new gold standard for DX of PE/infarction - less risk and less technique sensitive
|
|
|
Back up technique for evaluating PE
|
- V/Q scan
|
|
|
Asthma triad
|
- reversible airway obstruction
- airway inflammation - hyperresponsiveness to various stimuli ** may also be component of atopic triad= dermatitis, allergic rhinitis and asthma |
|
|
5 triggers of asthma
|
- viral illness
- cold weather - allergens - exercise - emotions |
|
|
Asthma classifications
SEVERE PERSISTENT |
- Continual Days w/ symptoms
- Frequent nights w/ symptoms - FEV1 = <= 60% - PEF variability = >30% |
|
|
Asthma Classifications
Moderate Persistant |
- Daily day symptoms
- Night symptoms >=5 months - FEV1= >60-80% - PEF variability = >30% |
|
|
Asthma Classifications
Mild Persistent |
- 3-6/week days with symptoms
- 3-4/month nights w/ symptom - FEV1= >80% - PEF var. 20-30% |
|
|
Asthma classifications
Mild intermittent |
- <2/week days w/ symptoms
- <2/month nights w/symptoms - >80% FEV1 - <20% PEV var |
|
|
Asthma Meds
Rescue |
- short acting bronchodilators
- Albuterol |
|
|
Asthma Meds
Control |
- inhaled corticosteroids - flovent or pulmicort
- Combination - fluticasone and salmeterol - Mast cell stabilizers - cromolyn - Leukotriene Antagonists - singular |
|
|
Asthma meds
Acute Exacerbations |
- oral steroids (prednisone)
|
|
|
Asthma Meds
Therapy |
- Intermittent - rescue meds only
- Persistent - need rescue and control meds |
