Development of an optical probe to investigate the suitability of measuring photoplethysmographs and blood oxygen saturation from the human auditory canal [PDF]
, 2013 Pulse oximetry has become a standard for patient monitoring in the operating room, and the finger is the most common site used for monitoring blood oxygen saturation (SpO2).
Budidha, K., Kyriacou, P. A.
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Pleomorphic adenoma presenting with conductive hearing loss in the ear canal: a case report and review of the literature [PDF]
, 2014 INTRODUCTION: Pleomorphic adenoma accounts for 65 percent of all salivary gland tumors. It has been identified in several anatomical regions, but pleomorphic adenoma arising in the ear canal, first described in 1951, is extremely rare. CASE PRESENTATION:
Ayako Maruyama +2 more
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Investigation of photoplethysmography and arterial blood oxygen saturation from the ear-canal and the finger under conditions of artificially induced hypothermia [PDF]
, 2015 Pulse oximeters relay on the technique of photoplethysmography (PPG) to estimate arterial oxygen saturation (SpO2). In conditions of poor peripheral perfusion such as hypotension, hypothermia, and vasoconstriction, pulse oximeters become inaccurate or ...
Budidha, K., Kyriacou, P. A.
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Cartilage Conduction Is Characterized by Vibrations of the Cartilaginous Portion of the Ear Canal
PLoS ONE, 2015 Cartilage conduction (CC) is a new form of sound transmission which is induced by a transducer being placed on the aural cartilage. Although the conventional forms of sound transmission to the cochlea are classified into air or bone conduction (AC or BC),
T. Nishimura +7 more
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Cochlear-bone wave can yield a hearing sensation as well as otoacoustic emission
, 2014 A hearing sensation arises when the elastic basilar membrane inside the cochlea vibrates. The basilar membrane is typically set into motion through airborne sound that displaces the middle ear and induces a pressure difference across the membrane.
Reichenbach, T., Tchumatchenko, T.
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Cerebral Abscess with Rupture into the Ventricles due to Chronic Otitis Media
Philippine Journal of Otolaryngology Head and Neck Surgery, 2018 This 43-year-old man with a known history of schizophrenia presented with a one-week history of left ear pain accompanied by a purulent discharge from the external auditory canal over the last 3 days. Shortly afterwards he became confused.
Ian C. Bickle, Diyana Mohamed
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Anatomical study of the pigs temporal bone by microdissection [PDF]
, 2014 PURPOSE:Initial study of the pig`s temporal bone anatomy in order to enable a new experimental model in ear surgery.METHODS:Dissection of five temporal bones of Sus scrofa pigs obtained from UNIFESP - Surgical Skills Laboratory, removed with hole saw to ...
Andrade, José Santos Cruz de [UNIFESP] +2 more
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Wearable In-Ear PPG: Detailed Respiratory Variations Enable Classification of COPD
IEEE Transactions on Biomedical Engineering, 2022 An ability to extract detailed spirometry-like breathing waveforms from wearable sensors promises to greatly improve respiratory health monitoring. Photoplethysmography (PPG) has been researched in depth for estimation of respiration rate, given that it ...
H. Davies +5 more
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Dermal cylindroma of the external auditory canal
Autopsy and Case Reports, 2023 External auditory canal (EAC) cylindroma is a rare tumor that mainly presents as a painless mass over the lateral aspect of the ear canal. They have been designated under different nomenclatures in the literature, and controversies persist about their ...
Vivek Dokania, Indranil Mukherjee
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Squamous papilloma in the external auditory canal
Clinical Case Reports, 2021 Squamous papilloma is a benign neoplasm and most commonly occurs in the oral cavity or larynx but rarely in the external auditory canal. Human papilloma virus is thought to be the cause. The effective treatment is surgical excision.
Junhui Jeong
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