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Sinusoidal Sources

Sinusoidal Sources

Direct current (DC) refers to an electric current that flows in a single direction, maintaining a constant polarity. This is in contrast to alternating current (AC), which periodically changes its direction and magnitude. AC forms the backbone of modern electricity transmission and distribution systems due to its efficient long-distance transmission capabilities.
In homes, the power supplies use sinusoidal sources to provide electricity. These sources generate a voltage that varies sinusoidally...

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Preauricular sinus: a novel approach.

Kavuturu V S Kumar Chowdary¹, Nelakurthi Sateesh Chandra¹, Ratnavelu Karthik Madesh²

¹Department of ENT, H & NS, NRI ACADEMY of Medical Sciences, Chinnakakani, Mangalagiri, 522503 Guntur (Dist), Andhra Pradesh India.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India

|January 16, 2014

Summary

This summary is machine-generated.

This study discusses preauricular sinus, a congenital condition. Wide local excision using an extended postauricular incision provides good results with no recurrence over 8 years.

Keywords:

Excision Preauricular sinus Recurrence

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Area of Science:

Otolaryngology
Congenital Malformations

Background:

Preauricular sinus is a common congenital malformation.
It presents with varied incidence and potential for recurrence post-excision.
Associated congenital anomalies are sometimes observed.

Purpose of the Study:

To discuss the etiology, clinical features, and associations of preauricular sinus.
To evaluate the optimal management for symptomatic or recurrent preauricular sinus.
To present personal experience with a specific surgical approach.

Main Methods:

Literature review on etiology, clinical features, and associations.
Analysis of personal surgical cases.
Wide local excision via extended postauricular incision with magnification.

Main Results:

The described surgical technique yielded good results.
No recurrence was observed during an 8-year follow-up period.
Magnification was found to be a valuable tool in the procedure.

Conclusions:

Wide local excision with an extended postauricular incision is an effective management for preauricular sinus.
The supra-auricular approach combined with magnification offers good outcomes and prevents recurrence.
This method is recommended for symptomatic and recurrent cases.