In proliferous inflammation, where adhesions exist with rigidity and hypertrophy of the mucous membrane, an apparatus is required to inject steam into the tympanum cavity. The apparatus includes a vapor generator (copper flask or glass flask over sand-bath), flexible rubber tubing, Eustachian catheter, and air-bag for pressure control. Steam can be generated by gas burner or alcohol lamp; sudden sharp pressure on the air-bag forces steam into the middle ear without discomfort to the patient.
After experiments determining whether fluids forced through the Eustachian catheter reach the tympanum cavity, it is concluded that large quantities of fluid do indeed reach this area. The usual method involves placing a drop or two of fluid in the catheter nozzle and forcing it into the tube during swallowing using an air-bag.
Dr. Wreden's experiments suggest that drops injected through Eustachian catheters may not reach the tympanum cavity but rather pass to the osseous part of the tube, though large injections do reach the cavity. He advises using a tympanic catheter for introducing fluids into the middle ear.
Wreden uses various agents such as fused caustic potash, liquor potassae, acetic acid, iodine, corrosive sublimate of mercury, nitrate of silver, sulphate of copper, zinc, potassium iodide, atropine, and chloral hydrate through the tympanic catheter. These are used in proliferous inflammation cases every third or fourth day for 15-20 days.
Bishop invented a nebulizer for the Eustachian tube's faucial mouth but it was inconvenient; Dr. C.E. Hackley’s instrument is more efficient, consisting of an air-bag, Eustachian catheter with hard-rubber nozzle, rubber tubing, and hypodermic syringe.
Politzer's method of inflating the drum-cavity after using the Eustachian catheter is employed in chronic disease cases. Chloroform vapor can penetrate when other methods fail, but caution must be used due to intense pain if too much chloroform is applied.
Key Takeaways
- Steam and fluid injections through Eustachian catheters are effective treatments for chronic non-suppurative ear inflammation.
- Large quantities of fluids injected through the tube reach the tympanum cavity, while small drops may not.
- Chloroform vapor can diagnose closed tubes when other methods fail.
Practical Tips
- Use an air-bag to control steam injection pressure for patient comfort and safety.
- Ensure large quantities of fluid are injected at once to reach the tympanum cavity effectively.
- Employ Politzer's method after Eustachian catheter use in chronic ear disease cases.
Warnings & Risks
- Avoid prolonged contact with steam as it can cause discomfort or pharynx inflammation.
- Do not exceed maximal doses of agents used through tympanic catheters to prevent acute inflammation.
- Be cautious when using chloroform vapor due to potential for intense pain if too much is applied.
Modern Application
While the historical methods described here are still relevant, modern medical practices have advanced with more precise diagnostic tools and less invasive treatments. However, understanding these techniques provides valuable insights into managing chronic ear inflammation without relying solely on antibiotics or surgery.
Frequently Asked Questions
Q: What is the purpose of steam injection in treating middle ear inflammation?
Steam injection aims to relieve rigidity and hypertrophy of the mucous membrane, particularly where adhesions exist. It helps reduce inflammation by introducing moisture into the affected area.
Q: Why are large quantities of fluid more effective than small drops in reaching the tympanum cavity?
Large injections reach the tympanum cavity due to pressure and volume, whereas small drops may only pass to the osseous part of the tube. This is based on Dr. Wreden's experiments.
Q: What are some agents used through a tympanic catheter for proliferous inflammation?
Agents include fused caustic potash, liquor potassae, acetic acid, iodine, corrosive sublimate of mercury, nitrate of silver, sulphate of copper, zinc, potassium iodide, atropine, and chloral hydrate.