Ventilation Studies of the Middle Ear and the Paranasal Sinuses with Xenon-133

1997 ◽  
pp. 503-506 ◽  
Author(s):  
W. Brenner ◽  
K. H. Bohuslavizki ◽  
W. Peters ◽  
B. Kroker ◽  
H. Wolf ◽  
...  
Keyword(s):  
Middle Ear ◽  
Paranasal Sinuses ◽  
Xenon 133 ◽  
Ventilation Studies

Paranasal sinuses and middle ear infections: what do they have in common?

2007 ◽  
Vol 18 (s18) ◽  
pp. 31-34 ◽  
Author(s):  
P. Marchisio ◽  
E. Ghisalberti ◽  
M. Fusi ◽  
E. Baggi ◽  
M. Ragazzi ◽  
...  
Keyword(s):  
Middle Ear ◽  
Paranasal Sinuses ◽  
Ear Infections

Risks from Breathing Elevated Oxygen

2019 ◽  
Vol 90 (12) ◽  
pp. 1041-1049 ◽  
Author(s):  
Barbara E. Shykoff ◽  
Rees L. Lee
Keyword(s):  
Blood Pressure ◽  
Sea Level ◽  
Middle Ear ◽  
Paranasal Sinuses ◽  
Decompression Sickness ◽  
Oxygen Toxicity ◽  
Pressure Control ◽  
Small Airways ◽  
Oxygen Fraction ◽  
Inspired Oxygen

INTRODUCTION: Effects of breathing gas with elevated oxygen partial pressure (Po2) and/or elevated inspired oxygen fraction (FIo2) at sea level or higher is discussed. High FIo2 is associated with absorption problems in the lungs, middle ear, and paranasal sinuses, particularly if FIo2 > 80% and small airways, Eustachian tubes, or sinus passages are blocked. Absorption becomes faster as cabin altitude increases. Pulmonary oxygen toxicity and direct oxidative injuries, related to elevated Po2, are improbable in flight; no pulmonary oxygen toxicity has been found when Po2 < 55 kPa [418 Torr; 100% O2 higher than 15,000 ft (4570 m)]. Symptoms with Po2 of 75 kPa [520 Torr; 100% O2 at 10,000 ft (3050 m)] were reported after 24 h and the earliest signs at Po2 of 100 kPa (760 Torr, 100% O2 at sea level) occurred after 6 h. However, treatment for decompression sickness entails a risk of pulmonary oxygen toxicity. Elevated Po2 also constricts blood vessels, changes blood pressure control, and reduces the response to low blood sugar. With healthy lungs, gas transport and oxygen delivery are not improved by increasing Po2. Near zero humidity of the breathing gas in which oxygen is delivered may predispose susceptible individuals to bronchoconstriction.Shykoff BE, Lee RL. Risks from breathing elevated oxygen. Aerosp Med Hum Perform. 2019; 90(12):1041–1049.

Osteomyelitis of the Skull Base with Atypical Onset and Evolution

2000 ◽  
Vol 109 (3) ◽  
pp. 326-330 ◽  
Author(s):  
Giuseppe Magliulo ◽  
Serena Varacalli ◽  
Andrea Ciofalo
Keyword(s):  
Elderly Patients ◽  
Skull Base ◽  
Middle Ear ◽  
Paranasal Sinuses ◽  
Microvascular Disease ◽  
External Otitis ◽  
Skull Base Osteomyelitis ◽  
Malignant External Otitis

Skull base osteomyelitis arises as a complication of malignant external otitis, but it can be also due to middle ear and/or mastoid infection. Other causes can be infections of the paranasal sinuses or of the mandible or maxilla due to odontic caries. Generally, osteomyelitis involves elderly patients affected by diabetic immunodeficiency or microvascular disease. In this paper, we present 3 new cases of skull base osteomyelitis with atypical onset and evolution. The difficulties of diagnosis and details of the management are discussed.

scholarly journals Black fungus due to covid-19: audiological assessment of middle ear functioning

2021 ◽  
Author(s):  
Prajwal Kumar ◽  
Swati Goyal ◽  
Prashanth Prabhu
Keyword(s):  
Early Detection ◽  
Fungal Infection ◽  
Middle Ear ◽  
Paranasal Sinuses ◽  
Crucial Role ◽  
Otoacoustic Emissions ◽  
Easy Access ◽  
Study Results ◽  
Second Wave

Background and Aim: A rare fungal infection, mucormycosis, has become more common in patients recovering from COVID in its second wave in India. The proximity and easy access to the middle ear through the Eustachian tube from paranasal sinuses alarms the need for early detec­tion of middle ear involvement. Hence, the study was carried out to determine the influence of mucormycosis on Immittance and otoacoustic emissions. Methods: eleven rhino orbital mucormycosis patients aged 40-60 years participated in the study. Middle ear evaluation was carried out with the help of Immittance and otoacoustic emissi­ons. Results: It was found that 4/11 (36.36%) parti­cipants had abnormal Immittance and absent oto­acoustic emissions, indicating middle ear dys­function. 3/4 participants had middle ear dys­function in the ear ipsilateral to the side of the infection. Conclusion: The study results reveal a rare cha­nce of middle ear involvement in mucormycosis patients, which calls for the crucial role of the audiologist in the early detection of middle ear dysfunction. Keywords: Mucormycosis; immittance; otoacoustic emissions

EPIDEMIOLOGIC CHARACTERISTICS OF MIDDLE EAR AND PARANASAL SINUSES BAROTRAUMA

1995 ◽  
Vol 88 ◽  
pp. S76
Author(s):  
Khanh-Gien G. Hoang ◽  
Millage C. Miller ◽  
W. Keith Martin
Keyword(s):  
Middle Ear ◽  
Paranasal Sinuses ◽  
Epidemiologic Characteristics

Penerapan Metode Certainty Factor untuk Mendiagnosa Penyakit THT

2021 ◽  
Vol 1 (2) ◽  
pp. 46-50
Author(s):  
Kristian Siregar ◽  
Paska Marto Hasugian
Keyword(s):  
Expert System ◽  
Inner Ear ◽  
Middle Ear ◽  
Paranasal Sinuses ◽  
Olfactory Organ ◽  
Human Knowledge ◽  
Certainty Factor ◽  
Specialist Doctor ◽  
Nose And Throat

Expert system is a system that seeks to adopt human knowledge into computers, so that computers can solve problems like experts do. ENT (ears, nose, and throat) are organs that are closely interconnected. Abnormalities in these organs are diagnosed and treated by a specialist doctor. One of the functions of these organs such as the ear. The ear is an organ for hearing and balance consisting of the outer ear, middle ear and inner ear. The function of the nose, the nose is the olfactory organ and the main way in and out of air, the nose also provides additional sound resonance and is a place for paranasal sinuses and tear ducts. While the function of the throat is a muscular duct where the food goes to the esophagus and where the air travels to the lungs. In this study, an expert system was built to detect and be equipped with a certainty value of the diagnosis. The certainty value is obtained using the Certainty Factor (CF) method.

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