Pulmonology
Physician discussions on respiratory conditions, critical care, interstitial lung disease, and pulmonary procedures.
Recent Discussions
How do you workup patients with neuropathy suspected to be secondary to sarcoid?
To answer this question, the attached paper with consensus criteria for the diagnosis of neurosarcoidosis, published in 2018, should be reviewed, Stern et al., PMID 30167654.Based on this paper, a diagnosis of probable or definite neurosarcoidosis requires unequivocal evidence of non-caseating granu...
Is there an upper threshold of pCO₂ that can cause symptomatic hypercapnia (e.g. AMS) despite metabolic compensation and normal pH?
Hi - I'm not sure about an upper threshold of pCO2 and AMS. However, even with normal pH, elevated pCO2 can cause significant increases in cerebral blood flow. Pollock et al., PMID 19406361 studied MR perfusion imaging and found that patients with a mean pCO2 of ~ 54mmHg had more than double the cer...
What is your pharmacologic approach to treating insomnia comorbid with sleep apnea?
I do not usually treat any insomnia, regardless of comorbidities, with any targeted medication for the insomnia itself. If the patient is getting over 5 hours of sleep, then I use CBT-I as this is guideline-recommended (AASM) first-line treatment for insomnia and has efficacy lasting over a year out...
Are you more permissive of perioperative interruption of anticoagulation for VTE depending on the location and relative chronicity of the thrombus?
Yes - in general, I try to balance the relative urgency/importance of the procedure or surgery v. the thrombotic risk to the patient of a period of time off of anticoagulation. Location and chronicity both can feed into determining thrombotic risk. An upper extremity DVT, in general, has a lower rec...
What is your experience with transesophageal lung mass biopsies?
Thoracic lesions requiring FNA in the mediastinum are often best approached with EUS–FNA, as the sedation and airway management are less complex than the EBUS, and the needle does not need to break through cartilage rings to access the lesion. On the other hand, a lung mass would require the needle ...
How do you or your practice manage young, average-risk patients without structural lung disease referred to you or self-referred for concern of environmental mold exposure?
These individuals are generally managed by pulmonology and allergy/immunology clinics because the clinical presentation is generally more aligned with allergy-type symptoms like a chronic cough, congestion, or other symptoms associated with airway irritation. In individuals who are receiving chronic...
How long do you strictly enforce low tidal volume ventilation in ARDS?
I do not believe that there is data specifically looking at during duration of LTVV in ARDS vs shorter durations. However, there are multiple trials that argue that LTVV in ARDS and patients at risk for ARDS improves mortality outcomes with minimal negative side effects. In my practice, I try to adh...
Do you maintain a strict platelet threshold of >50k when performing a lumbar puncture, or are there situations in which you feel comfortable with a lower threshold?
Our institution still uses 50k as a best practice guideline, though many of our proceduralists are comfortable performing the procedure with platelets slightly lower than 50k, and will have a risk/benefit discussion with the patient/team about the bleeding risk prior to proceeding; I myself would be...
Has your management of severe hyponatremia changed after a recent observational study described higher in-hospital mortality for sodium correction of <6 mEq/L compared to 6-10 mEq/L in the first 24 hours?
In short, no. I think the recent studies tell me two things: We need to better discriminate correction rates based on the risk of osmotic demyelination (ODS). Perhaps, do not worry so much about over-correction. They do not tell me to start rapidly correcting patients, and I guess I will summarize m...
Would you treat Scedosporium growth in expectorated sputum in a patient with COPD, pulmonary hypertension, and bronchiectasis, who has chronic dyspnea with exertion, thick sputum production, negative bacterial cultures, and no signs of mold infection on a high resolution CT scan, with no other clinical symptoms of infection?
In persons with bronchiectasis, almost anything that grows can be a pathogen, but it is tough to know. If the patient has COPD and no other immunocompromising conditions, I would not expect typical invasive fungal infection findings. Having said that, scedosporium is not the first common pathogen th...