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At least 1,513 records · Page 84Linked to original sources
PubMed2004

The silent sinus syndrome: maxillary sinus atelectasis with enophthalmos and hypoglobus.

PURPOSE OF REVIEW: The silent sinus syndrome is a rare clinical entity of spontaneous enophthalmos and hypoglobus caused by an alteration of the normal orbital architecture and function from maxillary sinus collapse in the setting of chronic sinusitis. RECENT FINDINGS: The maxillary sinus collapse appears to result from the development of negative sinus pressure from an acquired obstruction of the maxillary sinus outflow. Patients most often present with symptoms relating to enophthalmos, although few report any symptoms of sinus disease. SUMMARY: Characteristic radiographic features of the maxillary sinus including opacification and collapse of the antral walls with inward bowing of the orbital floor are necessary for diagnosis.

Enophthalmos↗
PubMed1999

The effect of nasal continuous positive airway pressure on normal ears and on ears with atelectasis.

OBJECTIVES: The effect of short-term nasal continuous positive airway pressure (CPAP) on normal and atelectatic ears was studied to investigate the effect of positive pressure on these ears. STUDY DESIGN AND SETTING: This is a prospective study performed at the ear, nose, and throat clinic of a district general hospital. No randomization was designed for this study. PATIENTS: The study on the normal ears was performed on healthy volunteers, whereas the study on atelectatic ears was performed on patients who had difficulty in performing the Valsalva maneuver. INTERVENTION: Tympanometry, audiometry, and electronystagmography were performed on normal subjects before, during, and immediately after a single use of nasal CPAP. In the group of atelectatic ears, otoscopy and audiometry were performed before and immediately after the use of nasal CPAP (3 hours). MAIN OUTCOME MEASURE: The change in the middle ear pressure and hearing on the normal ears during the use of nasal CPAP was measured. In the group with atelectatic ears, the incidence of reinflation of the collapsed eardrum after the use of nasal CPAP was measured. RESULTS: Positive pressure was recorded in all the middle ears during the use of nasal CPAP, resulting in a reversible hearing impairment. More than two thirds of the atelectatic eardrums could be reinflated by a single use of nasal CPAP. CONCLUSION: Nasal CPAP could be used to deliver positive pressure into the middle ear and, hence, could be used as a device to reinflate a collapsed eardrum in many atelectatic ears.

Acoustic Impedance Tests↗