Case Conclusion
The veteran was referred to a PDCEN site and underwent a comprehensive multidisciplinary evaluation. Pulmonary function testing showed lung volumes and vital capacity within the predicted normal range, mild air trapping, and a low diffusion capacity for carbon monoxide. Methacholine challenge testing was normal; however, forced oscillometry suggested small airways obstruction. A high-resolution CT showed air trapping without parenchymal changes. Cardiopulmonary exercise testing demonstrated a peak exercise capacity within the predicted normal range but low breathing reserve. Otolaryngology evaluation including laryngoscopy suggested chronic nonallergic rhinitis.
At the end of the veteran’s evaluation, a summary review reported nonallergic rhinitis and distal airway obstruction consistent with small airways disease. Both were reported as most likely related to deployment given her significant environmental exposures and the temporal relationship with her deployment and symptom onset as well as lack of other identifiable causes. A more precise histopathologic diagnosis could be firmly established with a surgical lung biopsy, but after shared decision making with a PDCEN HCP, the patient declined to undergo this invasive procedure. After you review the summary review and recommendations from the PDCEN group, you start the veteran on intranasal steroids and a combined inhaled corticosteroid/long-acting β agonist inhaler as well as refer the veteran to pulmonary rehabilitation. After several weeks, she reports an improvement in sleep and nasal symptoms but continues to experience residual exercise intolerance.
This case serves as an example of the significant limitations that a previously active and healthy patient can develop after deployment to Southwest Asia and Afghanistan. Encouraging this veteran to complete the AHOBPR allowed her to be considered for a PDCEN evaluation that provided the opportunity to undergo a comprehensive noninvasive evaluation of her chronic dyspnea. In doing so, she obtained 2 important diagnoses and data from her evaluation will help establish best practices for standardized evaluations of respiratory concerns following deployment. Through the AHOBPR and PDCEN, the VA seeks to better understand postdeployment health conditions, their relationship to military and environmental exposures, and how best to diagnose and treat these conditions.
Acknowledgments
This work was supported by the US Department of Veterans Affairs (VA) Airborne Hazards and Burn Pits Center of Excellence (Public Law 115-929). The authors acknowledge support and contributions from Dr. Eric Shuping and leadership at VA’s Health Outcomes Military Exposures office as well as the New Jersey War Related Illness and Injury Study Center. In addition, we thank Erin McRoberts and Rajeev Swarup for their contributions to the Post-Deployment Cardiopulmonary Evaluation Network. Post-Deployment Cardiopulmonary Evaluation Network members:
Mehrdad Arjomandi, Caroline Davis, Michelle DeLuca, Nancy Eager, Courtney A. Eberhardt, Michael J. Falvo, Timothy Foley, Fiona A.S. Graff, Deborah Heaney, Stella E. Hines, Rachel E. Howard, Nisha Jani, Sheena Kamineni, Silpa Krefft, Mary L. Langlois, Helen Lozier, Simran K. Matharu, Anisa Moore, Lydia Patrick-DeLuca, Edward Pickering, Alexander Rabin, Michelle Robertson, Samantha L. Rogers, Aaron H. Schneider, Anand Shah, Anays Sotolongo, Jennifer H. Therkorn, Rebecca I. Toczylowski, Matthew Watson, Alison D. Wilczynski, Ian W. Wilson, Romi A. Yount.