Related Experiment Video
Updated: Aug 15, 2026

07:47
Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Hypersensitivity pneumonitis in a technician using Pauli's reagent
Thorax
|December 1, 1979
Summary
A laboratory technician developed a severe respiratory illness, including interstitial pneumonitis, after exposure to sodium diazobenzenesulphate (Pauli's reagent). This case highlights occupational hypersensitivity to the chemical, emphasizing the need for safety precautions in laboratory settings.
Area of Science:
- Occupational Medicine
- Immunology
- Pulmonary Medicine
Background:
- Chromatography technicians may be exposed to various chemical reagents.
- Sodium diazobenzenesulphate, also known as Pauli's reagent, is used in laboratory settings.
Observation:
- A technician developed respiratory symptoms including airway obstruction and interstitial pneumonitis after using Pauli's reagent.
- Occupational challenge testing revealed immediate and late bronchial obstruction and decreased oxygen levels.
Findings:
- Lung biopsy, low serum C3, and positive skin prick tests indicated a hypersensitivity reaction.
- The patient's illness was attributed to an allergic response to Pauli's reagent.
Implications:
- This case underscores the potential for occupational hypersensitivity pneumonitis from specific laboratory chemicals.
- Highlights the importance of recognizing and managing chemical hypersensitivity in healthcare professionals.
- Suggests the need for stringent safety protocols when handling diagnostic reagents like Pauli's reagent.
Related Concept Videos
Allergic Reactions
Overview
Transmission-based Precautions II: Airborne and Protective Environment
Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Pneumonia II: Pathophysiology
The pathophysiology of pneumonia involves the following steps:
Pulmonary Function Tests
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Atypical Pneumonia
Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Pneumonia I: Introduction
Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...

