2023

Posted on March 28, 2023 by Pulm PEEPs

It is Tuesday #RadiologyRounds time! We are in a pleural state of mind here at Pulm PEEPs. This is another great case authored by rockstar-associate editor @TessLitchman

A 65-year-old man with cirrhosis presents to the ED with progressive shortness of breath:

The CXR has a right lower opacity decreasing in density that is silhouetting the right hemi-diaphragm without signs of volume loss on the right concerning for pleural effusion. There is also associated atelectasis adjacent to the effusion

What is your next step for this patient?

This patient had a bedside POCUS revealing a simple pleural effusion and abdominal ascites. He also had a CT scan performed:

Based on his imaging and history, the most likely diagnosis on the differential was a hepatic hydrothorax. Here is some more information on hepatic hydrothoraces:

A transudative effusion was confirmed on thoracentesis, and no other clear etiologies were identified The treatment of hepatic hydrothorax should always start with medical management of volume overload in cirrhosis. Pleural procedures can be used for disease that is refractory

37. Top Consults: Approach to Parapneumonic Effusions

Posted on March 21, 2023 by Pulm PEEPs

We continue our Top Consult Series on Pleural Disease and bring you a dedicated episode on Parapneumonic effusions. We are joined by two guest experts, Dr. David Feller-Kopman and Dr. Mihir Parikh. Listen in as we discuss the spectrum of parapneumonic effusions, including simple parapneumonic effusions, complicated parapneumonic effusions, and empyema. You will hear what to look for on imaging, what tests to send with pleural drainage as well as discuss the need for surgical consultation.

Meet our Guests

Dr. Mihir Parikh is currently an Assistant Professor of Medicine and academic interventional pulmonologist at Beth Israel Deaconess Medical Center. He is a highly esteemed educator and has worked to incorporate simulation training to improve procedural training for trainees and is a master of pleural disease.

Dr. David Feller-Kopman is a Professor of Medicine and the Section Chief of Pulmonary and Critical Care Medicine at Darmouth whose clinical and research expertise span the field of interventional pulmonology. Dr. Feller-Kopman is a true master of pleural disease, and has authored more than 225 peer-reviewed manuscripts and has been a leader for both ATS and CHEST committees.

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Radiology Rounds – 3/14/2023

Posted on March 21, 2023 by Pulm PEEPs

We are back with another #RadiologyRounds! This week’s case comes from our Associate Editor @luke_hedrick

A portable film is obtained on a 65 yo woman with COPD presenting with progressive dyspnea and cough.

The image shows near complete opacification of the left lung. There is no ipsilateral or contralateral tracheal deviation which you would expect with atelectasis or a large pleural effusion, respectively. A CT chest is obtained to better visualize the parenchyma.

The CT chest shows all three findings as noted below.

Yes! There is still aeration in some of the upper lobe, which would not be the case if this were caused by profound atelectasis. Also, atelectasis of such a large territory of the lung would usually cause traction on surrounding structures.

Having seen the CT, can you explain why the x-ray showed aeration in the inferior, left hemithorax? This is from the overlap of the left upper and lower lobes when viewed anteriorly. The sagittal view of the CT demonstrates this nicely.

36. Top Consult Series: Approach to Pleural Effusions

Posted on March 7, 2023 by Pulm PEEPs

Today the PulmPEEPs are joined by two amazing educators as we start off our Top Consult series on Pleural Disease. Join us today as we go through cases to learn a systematic approach for evaluation and management of pleural effusions.

Meet our Guests

Dr. Mira John received her medical degree from Tulane University School of Medicine in New Orleans and completed internal medicine residency at Icahn School of Medicine at Mount Sinai. She is currently a second-year pulmonary and critical fellow at the University of Washington.

Dr. Ylinne Lynch completed her fellowship training at the University of Washington and is currently a Clinical Instructor at the UW. She is a great medical educator and spends her clinical time on the pulmonary consult service as well as in the ICU.

Learning Points

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Radiology Rounds – 2/28/2023

Posted on February 28, 2023 by Pulm PEEPs

We are back with another #RadiologyRounds brought to you today by one of our PulmPEEPs Associate Editors @TessLitchman

Make sure to check out our prior episode and infographic on Severe COPD and Lung Volume Reduction

35. The Future of ARDS Research Roundtable

Posted on February 21, 2023 by Pulm PEEPs

We are extremely excited for another PulmPEEPs Roundtable table discussion today. We have spent multiple episodes talking about different aspects of ARDS and respiratory failure. Today, multiple expert guests return, as well as a new guest to the show, to discuss the future of ARDS research. This is a can’t miss discussion that is so jam-packed with pearls you’ll have to listen twice!

Meet Our Guests

Carolyn Calfee is a Professor of Medicine and Anesthesia at the University of California, San Francisco. She is a world-renowned ARDS researcher and has authored multiple landmark studies in the field. She previously joined us for a discussion on ARDS precision medicine and phenotypes.

Ewan Goligher is an Assistant Professor at the University of Toronto and University Health Network. He has published many practice-changing papers in ARDS. These have included prospective studies and some fantastic retrospective analyses that have fundamentally shaped our interpretation of trial results. He previously came on the show discussing lung and diaphragm protection.

Sarina Sahetya is an Assistant Professor of Medicine at Johns Hopkins. She is a funded researcher in ARDS and respiratory physiology and has published multiple studies on lung protection and ARDS. She last helped us understand how to titrate PEEP in ARDS.

Matthew Semler is an Assistant Professor of Medicine and Biomedical Informatics at Vanderbilt University Medical Center, where he is also the Associate MICU Director and the co-director of the Inpatient Division of the Learning Healthcare System at Vanderbilt. Through his role as Chair of the Steering Committee for the Pragmatic Critical Care Research Group, he has helped lead more than two dozen randomized trials leading to multiple high-impact publications.

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Radiology Rounds – 2/14/23

Posted on February 14, 2023 by Pulm PEEPs

What better way to celebrate Valentine’s Day than with a new #RadiologyRounds?! We think it is time for a Lung-centered holiday, but until then enjoy this case.

The patient’s pneumothorax was managed conservatively with observation and temporary 100% oxygen via a non-rebreather for nitrogen washout. The consolidations and effusion were concerning, so the patient had a CT chest performed.

34. Fellows’ Case Files: The Ohio State University College of Medicine

Posted on February 7, 2023 by Pulm PEEPs

Welcome back to Pulm PEEPs Fellows’ Case Files series. We are traveling to the midwest to visit The Ohio State University College of Medicine and hear about another great pulmonary case.

Meet Our Guests

Kashi Goyal is a second-year Pulmonary and Critical Care Fellow at The Ohio State University Wexner Medical Center. She obtained her MD at OSU, and then completed her Internal Medicine residency at Beth Israel Deaconess Medical Center. She worked as a hospitalist and educator before going back to fellowship and remains passionate about medical education.

Lynn Fussner is an Associate Professor of Internal Medicine at OSU and has been there since completing her fellowship and Post-doctorate at Mayo Clinic. In addition to her clinical work in the multidisciplinary vasculitis clinic, she is a translational researcher with a focus on inflammatory pulmonary disorders and vasculitis.

Avi Cooper is an Assistant Professor of Medicine at Ohio State University College of Medicine and the Program Director of the Pulmonary and Critical Care Fellowship. He is an Associate Editor at the Journal of Graduate Medical Education. Last but not least, he co-hosts the Curious Clinician Podcast, one of the most popular medical education podcasts.

Patient Presentation

Key Learning Points

**Spoilers Ahead** If you want to think through the case on your own we advise listening to the episode first before looking at these points.

The three most common causes of cough in adults in the USA are cough variant asthma, GERD, and post-nasal drip
A post-viral cough can last for 8-12 weeks and still be within normal
Sinus symptoms in a chronic cough can just be sinusitis and post-nasal drip, but should consider eosinophilic granulomatosis with polyangiitis (EGPA), aspirin exacerbated respiratory disease (AERD), cystic fibrosis, or ciliary dyskinesia.
Examination of a wheeze
- Fixed sound vs variable
- Pitch: larger central airways vs lower peripheral airways
- Is it throughout the cycle or at a certain phase?
- Ask the patient to cough before listening and ask them to breathe out through their mouth
Approach to eosinophilia in a patient with cough and dyspnea
- Multi-system involvement vs lungs
  - Multi-system involvement
    - Vasculitis
    - Parasitic infection
    - Hematologic malignancy
    - Medication side effect
    - Primary hypereosinophilic syndromes
  - Within the lungs:
    - Parenchymal disease
      - Loeffler’s syndrome
      - Eosinophilic pneumonia
    - Airway disease
      - Asthma
      - ABPA
If you have a high suspicion for airways disease, PFTs should be requested with bronchodilator testing regardless of the degree of obstruction on baseline spirometry
Asthma alone should not cause ground glass opacities, so if see these in a patient with asthma we think about:
- Infection, especially atypical infections
- EGPA
- Vasculitis with DAH
- ABPA
- Hypogammaglobulinemia or other immunodeficiency
EGPA diagnosis
- ANCA testing is only positive in 60% of patients with EGPA so a negative test doesn’t rule it out by any means
- It is easiest to make a diagnosis when there is a clear small vessel manifestation
  - Alveolar hemorrhage
  - Mononeuritis multiplex
  - Glomerulonephritis
- Many patients with asthma, nasal polyposis, and high peripheral eosinophilia have EGPA but don’t have a clear small vessel feature of vasculitis or a positive ANCA
  - These patients typically have eosiniophilia a lot higher than when thinking about allergic phenotype asthma alone. As a rule of thumb, at least an absolute eosinophil count > 1000

References and Further Reading

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Radiology Rounds – 1/31/23

Posted on January 31, 2023 by Pulm PEEPs

For today’s #RadiologyRounds we have a combined Radiology and Ventilator imaging rounds! You’re in the ICU caring for a young patient on a ventilator when you are called to the bedside for a desaturation.

You perform an inspiratory hold and see that the PIP, plateau, and difference between peak and plateau have all increased. On exam you hear bilateral mechanical breath sounds anteriorly. You order a CXR and the student asks a question about the waveforms

There are pressure deviations corresponding to the flow deviations.

There is no clear patient effort The fact that the PIP and plat have changed makes water in the tubing or cardiac oscillations less likely.

You think this is mucus, with a plug ball-valving in a bronchus

The CXR arrives and shows right lower lobe collapse.

A bedside bronchoscopy is performed with large mucus plugs suctioned out of the RLL and RML. Afterward, the patient’s oxygenation is improved, the flow deviations resolve, and the plateau pressure drops to 19

33. Lung and Diaphragm Protective Ventilation Roundtable

Posted on January 24, 2023 by Pulm PEEPs

Today the PulmPEEPs are discussing Lung and Diaphragm Protective Ventilation with two experts in the field. We are joined by Dr. Jose Dianti and Dr. Ewan Goligher.

Meet Our Guests

Dr. Jose Dianti is a clinical and research fellow at the University of Toronto and University Health Network. He completed his residency in Critical Care and worked as a critical care attending previously at the Hospital Italiano in Buenos Aires, Argentina. He is particularly interested in ventilator induced lung injury and personalized ventilation strategies. Dr. Ewan Goligher is an Assistant Professor at the University of Toronto and University Health Network, and is a world renowned researcher in the mechanisms of ventilator induced lung and diaphragm injury.

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