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Biomedical subjects

Tuncay Ozçelik

Publications and source records attributed to Tuncay Ozçelik.

5 recordsLinked to original sources
PubMed2003

Auditory brain stem responses in the detection of brain death.

OBJECTIVES: We evaluated comatose patients by auditory brain stem responses (ABR) to determine the role of ABR in the diagnosis of impending brain death. PATIENTS AND METHODS: Sixty comatose patients in the intensive care unit were evaluated by brain stem evoked response audiometry. Correlations were sought between the absence or presence of ABRs and the presenting pathology, the Glasgow Coma Scale (GCS) scores, and ultimate diagnoses. RESULTS: The brain stem responses were totally absent in 41 patients. Presence of wave I could be obtained in only 10 patients. All the waveforms were found in nine patients; however, in eight patients the potentials disappeared as the GCS scores decreased to 3. Detection of wave I alone strongly suggested dysfunction of the brain stem. However, loss of wave I particularly in trauma patients aroused doubt as to whether the absence was associated with auditory end organ injury or brain stem dysfunction. CONCLUSION: The results suggest that evaluation of ABR may support brain death in a comatose patient (i) when wave I is present alone, (ii) the absence of wave I is accompanied by a documented auditory end organ injury, or (iii) when previously recorded potentials are no longer detectable.

Adolescent↗
PubMed2003

Thyroid hemiagenesis: a case report.

Thyroid hemiagenesis is usually diagnosed incidentally during examination for other thyroid gland diseases. Iodine-123 thyroid scan of a 25-year-old woman showed a normal homogeneous right thyroid lobe, but no uptake in the left lobe. Ultrasonography of the neck confirmed the absence of the left thyroid lobe, while the right lobe was homogeneous and normal. Thyroid hemiagenesis should be included in the differential diagnosis of thyroid diseases.

Adult↗
PubMed2003

Factors that affect the outcome of open-technique procedures performed in the treatment of cholesteatoma.

OBJECTIVES: We evaluated the factors that have considerable significance on the outcome of open cavity procedures in the treatment of cholesteatoma. PATIENTS AND METHODS: The study included 66 patients (43 males, 23 females; mean age 47 years; range 21 to 69 years) who underwent surgery for cholesteatoma. Of these, 56 patients completed at least a five-year follow-up. RESULTS: Mucosal infections and granulation tissue formation occurred in seven patients (10%) in the early postoperative period. Retraction pockets developed in three patients (4%); of these, only one patient required excision because of deep localization. Drum perforations that occurred in two patients (3%) were repaired by myringoplasty. Revision surgery was performed in four patients (7.1%) due to residual cholesteatoma within a five-year follow-up. CONCLUSION: The height of the facial ridge was found as the most important factor related to a successful outcome of open-technique procedures. Other factors included the creation of a smooth mastoid cavity with round edges, removal of all diseased mastoid cells, and an extensive conchameatoplasty.

Adult↗