Pulmonology
Physician discussions on respiratory conditions, critical care, interstitial lung disease, and pulmonary procedures.
Recent Discussions
Do you treat non-albicans strains of Candida on sputum culture or BAL in patients who are immunosuppressed?
I agree with these answers and do not treat either without biopsy.
What is the interpretation of an IGRA with positive TB wells and negative nil and negative mitogen wells?
We don't see positive controls in most clinical assays. They are run, of course, but hidden from view. The mitogen well is the positive control in the IGRAs. The mitogen used QuantiFERON-TB Gold is, I believe, PHA or phytohemagglutinin. PHA turns on T-cells to indiscriminately. If I remember my mito...
Which images do you routinely request when ordering a HRCT chest?
The images I tend to request depends in part on the clinical scenario. In general, I find it helpful to obtain a traditional "ILD protocol" when I meet an ILD patient for the first time, especially when the diagnosis is unclear. This includes both prone and supine images with 1-1.5 mm cuts, in addit...
For patients with newly diagnosed VTE on IV heparin planned for transition to DOAC, would you start at the loading or maintenance DOAC dose?
Agree with Dr. @Dr. First Last. In the clinical trials that led to rivaroxaban and apixaban approval, many patients had 2 days of injected anticoagulant first to arrive at successful outcomes leading to DOAC approval. I suggest IV heparin until hemodynamically normal (for PE), sq LMWH for a dose or ...
Do you obtain an echocardiogram as a part of risk stratification in all patients hospitalized with an acute pulmonary embolism?
I agree with Dr. @Dr. First Last! The echo offers a “functional view” that we can’t obtain by CTA, as well as the opportunity to diagnose clot-in-transit. However, if a formal echo cannot be quickly obtained, a bedside echo may offer key information. All critical care and ED clinicians should have a...
What are your preferred treatments for disrupted nighttime sleep in elderly patients with narcolepsy already taking sodium oxybate?
The treatment depends on what is causing the disruption. Before I consider any medication, I recommend a thorough investigation of possible causes of the disruption. For example, has sleep apnea been ruled out? Is the patient taking alerting substances close to bedtime? What is the sleep environment...
What factors do you consider when determining whether to perform a biopsy for the diagnosis of organizing pneumonia?
If there are known risk factors such as autoimmune disease, biopsy is usually not necessary in that circumstance. If it's truly cryptogenic in nature, or the appearance on CT imaging is not typical, then biopsy can be helpful. Direct tissue sampling also increases the yield for culture in case it is...
What are some immunosuppression regimens to consider in a patient with refractory cardiac sarcoidosis?
Unfortunately, there is no high quality data at this point to directly answer this question but here are some options. For patients who have only been treated with oral steroids, I would first consider the addition of weekly methotrexate at a dose of between 10 - 20 mg WEEKLY with supplemental folic...
Do you utilize soluble IL-2 receptor or ACE levels as serum biomarkers to monitor disease activity in pulmonary sarcoidosis?
I use ACE levels to monitor disease activity in patients who demonstrate elevated ACE levels at diagnosis of confirmed sarcoidosis and for which there is no other explanation for elevation of ACE. ACE normalizes with treatment and will increase again if/when the disease relapses. The literature indi...
What criteria do you use to determine if a change is clinically significant while evaluating PFTs?
This can be determined using various criteria, including whether or not a measurement has dropped below certain severity thresholds and/or if the observed change is greater than one might expect through general variability. Various professional societies have recommended using the lower limit of nor...