The full content of Annals is available to subscribers

Subscribe/Learn More  >
Articles |

Hypersensitivity Pneumonitis Treated with an Electrostatic Dust Filter

Robert L. Jacobs, MD; Charles P. Andrews, MD; and Frank O. Jacobs, BS
[+] Article, Author, and Disclosure Information

Request for Reprints: Robert L. Jacobs, MD, 8279 Fredericksburg Road, San Antonio, TX 78229.

Current Author Addresses: Dr. Jacobs: 8279 Fredericksburg Road, San Antonio, TX 78229.

Dr. Andrews: 4751 Hamilton Wolfe, San Antonio, TX 78229.

Mr. Jacobs: 6612 Countess Adria, San Antonio, TX 78238.

© 1989 American College of PhysiciansAmerican College of Physicians

Ann Intern Med. 1989;110(2):115-118. doi:10.7326/0003-4819-110-2-115
Text Size: A A A

A 60-year-old woman had had recurrent acute migratory pneumonias for 9 months. The results of an evaluation, which included tests for serum precipitins, a transbronchial biopsy, and a bronchial provocation, confirmed a diagnosis of hypersensitivity pneumonitis caused by an Aspergillus species. The findings from gravity air cultures in the home showed a heavy infestation of mold. The installation of electrostatic dust filters in the return ducts of the central air conditioning system resulted in the lowering of mold colony counts to normal levels. This change in the environment enabled the patient to live at home without having the signs and symptoms of hypersensitivity pneumonitis, or a need for medication. Thirty months after the electrostatic dust filters were installed, total mold colony counts were still normal, the patient remained free of the signs and symptoms of hypersensitivity pneumonitis, and serum precipitins could no longer be demonstrated. The results of a bronchial challenge to Aspergillus species, however, remained positive; these positive results suggest that long-term memory immune mechanisms may play an important role in the pathogenesis of hypersensitivity pneumonitis and lessen the importance of precipitins in establishing a diagnosis. We report that electrostatic dust filters may be an effective treatment for patients with hypersensitivity pneumonitis when avoidance of the causative antigen cannot be easily and rapidly achieved.





Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).


Submit a Comment/Letter
Submit a Comment/Letter

Summary for Patients

Clinical Slide Sets

Terms of Use

The In the Clinic® slide sets are owned and copyrighted by the American College of Physicians (ACP). All text, graphics, trademarks, and other intellectual property incorporated into the slide sets remain the sole and exclusive property of the ACP. The slide sets may be used only by the person who downloads or purchases them and only for the purpose of presenting them during not-for-profit educational activities. Users may incorporate the entire slide set or selected individual slides into their own teaching presentations but may not alter the content of the slides in any way or remove the ACP copyright notice. Users may make print copies for use as hand-outs for the audience the user is personally addressing but may not otherwise reproduce or distribute the slides by any means or media, including but not limited to sending them as e-mail attachments, posting them on Internet or Intranet sites, publishing them in meeting proceedings, or making them available for sale or distribution in any unauthorized form, without the express written permission of the ACP. Unauthorized use of the In the Clinic slide sets will constitute copyright infringement.


Buy Now for $42.00

to gain full access to the content and tools.

Want to Subscribe?

Learn more about subscription options

Related Articles
Topic Collections
Forgot your password?
Enter your username and email address. We'll send you a reminder to the email address on record.