Pulmonology 🫁 Flashcards
(269 cards)
Which two parts of mechanical ventilation determine O2?
PEEP and FiO2
When do we not do a thoracentesis 1st for effusion
If we suspect CHF, we do a diuretics trial first
Name some CIs for non invasive ventilation
Agitated patient, high risk of aspiration, non resp organ failure, ARDS, severe acidosis, cardio respiratory arrest, upper airway obs, facial trauma, esophgeal anastomosis
Think airway protection, need for invasive over non invasive, and mechanical issues
Myasthenia crisis Mx
Intubate, and IVig and CSs
4 interventions to decrease mortality in COPD
O2, rehab, Vx, stop smoking
Criteria for long term O2 therapy in COPD patients
- Resting arterial oxygen tension (PaO2) ≤55 mm Hg or pulse oxygen
saturation (SaO2) ≤88% on room air - PaO2 ≤ 59 mm Hg or SaO2 ≤ 89% in patients with cor pulmonale,
evidence of right heart failure, or hematocrit >55%
Lung abcess 1st and 2nd line Abx
Ampi and sulbactam
Then clindamycin 2nd line
Patient on ventilation, what criteria is there for spontaneous breathing trial?
pH > 7.25, adequate O2 on minimal support, intact insp effort and no AMS
Treatment for invasive aspergillosis
Voriconazole and echinocandin.. then voriconazole alone.
Best confirmation Invx for aspergillosis
Bronchoscopy with bronchoalveolar lavage
Signs of transient tachypnoea of the newborn
Risk factors (premature etc.). Signs of resp distress. Increase lung volume and clear breath sounds. Interlobular fissure seen on X-RAY
Contrast aspiration pneumonia and chemical pneumonitis. Main differences in presentation
Chemical (acid) = rapid onset, bilateral,
Pneumonia = unilateral, over days, fever, sputum
What is post surgical atelectasis . How to prevent from occurring
Atelectasis after surgery. Usually after 2 days, due to pain restricting TV and thus causing lobar collapse. Causes low O2, increase RR and elevated pH. Prevent by doing post operative deep breathing excersizes
What is respiratory failure due to asthma. What are the signs. Three steps in Mx
Asthma attack signs, with accessory muscle use, silent chest, wheezing actually decreases. K+ may decrease (alkalosis), lactate may increase, and O2 will go down. Do albuterol, LAMA, CS, Mg first. Can quickly trial NIPPV (not as effective as for COPD). Very low threshold for intubation
Lung issue in CREST syndrome
PAH (literally the pulmonary artery endothelial hyperplasia type) not a Pulm HTN secondary to some fibrosis.
Laryngomalacia
Where the supraglottic structures are flabby and collapse. Causes stridor, worse in supine. Presents in infants
Unilateral choanal atresia presentation
Assume usually until adulthood, causing chronic nasal discharge
What are vascular rings, and how do they usually present
Where the great vessels wrap around the trachea and esooahgus. Presents with biphasic stridor, improved with neck extension.
Can you get pulmonary edema in altitude sickness? Treatment aims?
Yes, from the hypoxia vasoconstriction in the lungs causing very high pressure and thus a transudate. Do things to increase oxygen to reduce the vasoConstriction, and to therefor reduce the edema. Take of backpack to reduce o2 consumé, give o2, decent
Why does someone with bronchopulomary dysplasia have HTN
There is increase circulating catecholamines….. causing HTN
And 5 ways to decrease the risk of VAP
Subglottic secretion suction
Avoid PPI use unless 100% needed
Decrease movement of patient
Avoid excess sedation
Elevate head to a 45° angle
Discuss the concepts of ventilation in ARDS
Aim to limits alveolar distension. So Vt (TV) can be low (6-8). This can cause hypoventilation, but we allow this persmissive hypercapnia. The collapsed airways don’t all open up, so giving high pressure or Vt just damages open alveoli. Prone positioning is good. Still use PEEP to recruit some alveoli. Keep FiO2 at its lowest to avoid oxygen toxicity
Aspiration pneumonia Tx
Same as CAP. ceftriaxone and azithromycin… not as heavily anaerobic as once thought
Presentation of high alititude pulmonary edema, and how to differentiate from pneumonia
Our vasoconstriction is very high in some areas of the lung, causing transudate formation. Presents like patchy pneumonia . But will have not too high Leuk, patient will have recently been at high altitudes, procalcitonin normal. Rapid improvement with supplemental O2