Asım Kaytaz

Istanbul University

Author Statistics

Papers

Citation

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i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Nurten Uzun Adatepe

Istanbul University-Cerrahpaşa

FÖ

Ferhan Öz

Acıbadem Kadıköy Hospital

ŞÖ

Şahin Öğreden

Sağlık Bilimleri Üniversitesi

Hüseyin Işıldak

Stony Brook University

Emin Karaman

Istanbul University-Cerrahpaşa

Mehmet Ada

Istanbul University-Cerrahpaşa

GÖ

Gül Özbilen Acar

Istanbul Medeniyet University

VÖ

Volkan Özben

Acıbadem Adana Hospital

Gediz Murat Serin

Kent Hastanesi

Feray Karaali Savrun

Istanbul University-Cerrahpaşa

Cooperative Institutions

Istanbul University

Istanbul University-Cerrahpaşa

Acıbadem University

Sağlık Bilimleri Üniversitesi

Acıbadem Adana Hospital

Marmara University

Kent Hastanesi

Fundación Juan March

Istanbul Medeniyet University

Medeniyet Üniversitesi Göztepe Eğitim ve Araştırma Hastanesi

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Investigation of Superior Laryngeal Nerve Disorders with Laryngeal Electromyography in Patients with Voice Hoarseness

İstanbul medical journal (2018)

Sahin Ögreden Asım Kaytaz Ferhan Öz Nurten Uzun Adatepe Mustafa Şahin

Superior laryngeal nerve

Laryngeal Diseases

10.5152/imj.2018.26032

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Citations (0)

Stridor associated with essential laryngeal myoclonus

Otolaryngology (2008)

Emin Karaman Hüseyin Işıldak Şahin Öğreden Ferhan Öz Asım Kaytaz

Laryngeal Diseases

10.1016/j.otohns.2007.10.004

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Citations (1)

Laryngeal paraganglioma: report of an unusual entity.

Ear Nose & Throat Journal (2010)

Asım Kaytaz Emin Karaman Deniz Tuna Edızer Yusuf Haciyev Büğe Öz

Paragangliomas are rare in the larynx. When they do occur there, the most common subsite is the supraglottic compartment. Unlike other neuroendocrine tumors of the larynx, laryngeal paragangliomas are three times as common in women as in men. Although a preoperative biopsy is often performed to establish the diagnosis, this procedure carries a considerable risk of bleeding, which may necessitate a tracheotomy to secure the airway. Immunohistochemical staining is useful in the differential diagnosis to distinguish a paraganglioma from other neuroendocrine tumors. Computed tomography and/or magnetic resonance imaging with preoperative angiography and possible embolization are important to obtain prior to treatment. Surgical excision is the treatment of choice.

Tracheotomy

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Citations (15)

Motor Unit Potential Analysis of the Palatal Muscles in Obstructive Sleep Apnea Syndrome

Neurological Sciences and Neurophysiology (2020)

Feray Karaali‐Savrun Nurten Uzun Adatepe Gülçin Benbir Rahşan İnan Hakan Kaynak

Objectives: Among different theories about pathogenesis of obstructive sleep apnea syndrome (OSAS), dysfunction of upper airway muscles still awaits to be delineated. The aim of this study is to examine differences in motor unit potential (MUP) parameters of upper airway muscles between OSAS patients and healthy controls. Methods: Ten male patients diagnosed as OSAS by whole-night polysomnography were analyzed for MUP parameters of genioglossus (GG) muscle, palatoglossus muscle (PG), palatopharyngeus muscle, and uvular (U) muscle. Eight healthy volunteer men matched by age were enrolled as a control group. Results: In PG muscle parameters, the mean MUP area was significantly smaller ( P = 0.040) in OSAS patients than those in controls. On the other hand, U muscle parameters showed a significantly larger mean MUP area ( P = 0.022) in OUAS patients compared to those in the control group. In OSAS patients, the percentages of polyphasic MUPs of GG and PG muscles were significantly high ( P < 0.001 and P = 0.05, respectively). Body mass index was positively correlated with number of phases of GG muscle ( r s = 0.63, P < 0.05) and duration of U muscle ( r s = 0.71, P < 0.05) in OSAS patients. Other MUP parameters of palatal muscles were similar between the two groups. Conclusion: Our results showed that, although mild in severity, structural neurogenic and myogenic changes characterized as mild and nonuniform MUP changes may co-exist in OSAS patients. These changes in palatal muscles may be attributed to compensatory adaptation of muscle fibers to other precipitating factors in OSAS.

Pharyngeal muscles

10.4103/nsn.nsn_14_20

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Citations (1)

The Effect of Different Hemostatic Systems on Injury of The External Branch of Superior Laryngeal Nerve in Thyroidectomy

İstanbul medical journal (2018)

Volkan Özben Recep Özgültekin Nurten Uzun Adatepe Asım Kaytaz

Superior laryngeal nerve

Nerve Injury

10.5152/imj.2018.42243

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Citations (1)

Carotid-Cavernous Fistula After Functional Endoscopic Sinus Surgery

Journal of Craniofacial Surgery (2009)

Emin Karaman Hüseyin Işıldak Yusuf Haciyev Asım Kaytaz Özgün Enver

Carotid-cavernous fistulas (CCFs) are anomalous communications between the carotid arterial system and the venous cavernous sinus. They can arise because of spontaneous or trauma causes. Most caroticocavernous fistulas are of spontaneous origin and unknown etiology. Spontaneous CCF may also be associated with cavernous sinus pathology such as arteriosclerotic changes of the arterial wall, fibromuscular dysplasia, or Ehler-Danlos syndrome. Traumatic CCFs may occur after either blunt or penetrating head trauma. Their clinical presentation is related to their size and to the type of venous drainage, which can lead to a variety of symptoms, such as visual loss, proptosis, bruit, chemosis, cranial nerve impairment, intracranial hemorrhage (rare), and so on. Treatment by endovascular transarterial embolization with electrolytically detachable coils is a very effective method for CCF with good outcomes. Carotid-cavernous fistulas have been rarely reported after craniofacial surgery and are uncommon pathologies in otolaryngology practice. In this study, we report a 40-year-old woman with CCF secondary to blunt trauma of functional endoscopic sinus surgery.

Chemosis

Head trauma

Carotid-Cavernous Sinus Fistula

Superior ophthalmic vein

Blunt trauma

Etiology

10.1097/scs.0b013e31819ba1e8

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Citations (12)

Sağlıklı Erkeklerde Palatal Kasların Multi-MÜP Analizi

Journal of Turkish Sleep Medicine (2014)

Feray Karaali Savrun Gülçin Benbir Rahşan İnan Asım Kaytaz Hakan Kaynak

Introduction:The palatal muscles play an important role in the patency of upper airway together with other pharyngeal muscles.Studying their function will be helpful for delineating the pathophysiology of disorders affecting the upper airway patency like obstructive sleep apne syndrome.

10.4274/jtsm.09

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Citations (0)

Unilateral Blindness After Septoplasty

Journal of Craniofacial Surgery (2017)

Ahmet Erdem Kılavuz Düzgün Yıldırım Gediz Murat Serin Asım Kaytaz

Abstract Septoplasty is a frequently performed procedure with mostly minor complications. Nevertheless, it may lead to serious complications. The authors present a 29-year-old patient admitted to their hospital 10 days after septoplasty in another institution. He suffered a total loss of vision immediately after the surgery. High-resolution computed tomography and magnetic resonance imaging revealed a direct trauma of the optic canal and an inflamed and edematous optic nerve. Even though a successful endoscopic optic nerve was performed, the patient's loss of vision did not improve after the surgery. Blindness after septoplasty is an extremely rare but a devastating complication. There are only few patients that indicates the optic nerve injury caused by a direct trauma.

Optic canal

10.1097/scs.0000000000003329

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Botulinum Toxin Injections for Neurological Disorders

Neurological Sciences and Neurophysiology (2020)

Cem Bölük Yesim Gökçe Ayşegül Gündüz Nurten Uzun Adatepe Feray Karaali Savrun

Aim: Reported results of botulinum toxin (BoNT) injections vary widely in different studies and in different neurological disorders. The aim of this study was to investigate the efficacy and safety of BoNT injections for each neurological disorder and to report our experience in this area since 1994. Materials and Methods: All patients who were injected with BoNT since 1994 were included in this retrospective study. Age, gender, etiology, specific diagnosis, time from first symptom to first injection, type of BoNT (onabotulinum toxin-abobotulinum toxin), doses, treatment response, and complications were extracted from patient files. Etiologies were classified into five main groups: hyperkinetic movement disorders, focal spasticity, painful conditions, sialorrhea, and hyperhidrosis. Positive treatment response was defined as any objective clinical improvement determined by the attending physician and declared by the patient. Results: We determined that 1792 patients were considered for BoNT injections. Among them, 341 were not found to be suitable for injections or did not accept to have the procedure done. In total, 1451 different patients were included in the study. The most common indications for BoNT injection were hyperkinetic movement disorders (72.3%) and focal spasticity (15.2%). Other disorders included painful conditions, hyperhidrosis, and sialorrhea. In 74.3% of the patients, the only injected toxin was onabotulinum toxin, whereas 10.2% of the patients were injected only with abobotulinum toxin. In 14.7% of the patients, the injection type was changed from one to the other, due to ineffectiveness or unavailability. Response rates were 95.4% for focal spasticity, 92.6% for hyperkinetic movement disorders, 81.1% for painful conditions, 66.7% for hyperhidrosis, and 63.1% for sialorrhea. Severe complications were seen in 0.6% of the patients. Conclusion: BoNT injections seem to be effective in all of the neurological disorders which we investigated. Except for mild cosmetic complications, BoNT is generally safe in experienced hands.

Movement Disorders

Sialorrhea

Etiology

10.4103/nsn.nsn_36_20

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Citations (1)

Investigation of superior laryngeal nerve disorders with laryngeal electromyography in patients with voice hoarseness

Istanbul Medical Journal (2019)

Şahin Öğreden Asım Kaytaz Ferhan Öz Nurten Uzun Adatepe Mustafa Şahin

Superior laryngeal nerve

10.4274/imj.26032

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Citations (0)