5 research outputs found
Effects of Glycerol Test on Resonance Frequency in Patients with Meniere's Disease
Objective: To evaluate resonance frequency (RF) values via dehydration effects in the inner ear caused by the glycerol test, which is used as a diagnostic method for Meniere's disease (MD). Methods: Twenty adult patients with unilateral MD were included in the study. Before, and then at 1, 2, and 3 h after administration of glycerol (1 g/kg), pure-tone hearing levels (125-8,000 kHz) and multifrequency tympanometry tests were performed. As a control, the RF values of the ears of 25 healthy subjects (i.e., 50 ears) were compared to the affected and unaffected ears in the 20 MD patients. Results: There was a significant difference between the RF values of affected and healthy ears before glycerol administration (p = 0.047). The RF values before and after glycerol administration into affected ears were compared. The average RF values decreased significantly from 748.0 +/- 402.1 to 808.0 +/- 410.1 Hz at 1 h after glycerol intake, and this value increased during the subsequent hours. There were no statistically significant differences between the pure-tone levels before and 1 h after glycerol administration, but a significant decrease was observed at 3 h. Conclusion: We suggest that MD has different inner-ear dynamics and normal RF values when compared to healthy ears. Furthermore, decreased inner ear pressure causes reduction of the mass effect and a stiffening of the annular ligament. We conclude that pre- and post-RF tests should be added to the test battery for diagnosis of MD
An unusual peripheric facial paralysis onset
WOS: 000419795800015Peripheric facial paralysis may be observed primary or secondary causes. Firearm injuries may cause facial paralysis via direct injury or ballistic effects. Ballistic effects may be observed far beyond the bullet trace. In this article we present an unusual late peripheric facial paralysis onset related with ballistic effect a firearm injury to the left maxillary sinus. Due to late onset of facial paralysis after firearm injury; differential diagnosis and ballistic effects have been discussed
Bilateral Vocal Cord Paralysis Secondary to Head and Neck Surgery
Even endotracheal intubation could be considered safe in operations under general anesthesia; rarely, it could cause recurrent laryngeal nerve paralysis as a complication. As mentioned in the literature, as a possible reason for this, anterior branches of the recurrent laryngeal nerve in the larynx could suffer from compression between the posteromedial part of the thyroid cartilage and the cuff of the tube. In the literature, unilateral vocal cord paralysis due to endotracheal intubation occurs more frequently in comparison to bilateral vocal cord paralysis. These types of palsies usually totally improve in approximately 6 months
The Effect of Garlic Derivatives (S-Allylmercaptocysteine, Diallyl Disulfide, and S-Allylcysteine) on Gentamicin Induced Ototoxicity: An Experimental Study
The Effect of Garlic Derivatives (S-Allylmercaptocysteine, Diallyl Disulfide, and S-Allylcysteine) on Gentamicin Induced Ototoxicity: An Experimental Study
Objectives. Gentamicin is a potent aminoglycoside antibiotic.
Ototoxicity and nephrotoxicity are the main side effects which restrict
the use of gentamicin. Garlic with its intrinsic antioxidant activity
may prove beneficial in prevention from ototoxicity.
S-allylmercaptocysteine (SAMC), diallyl disulfide (DD), and
S-allylcysteine (SAC) are three active compounds found in garlic. In
this study, we investigated the effect of SAMC, DD, and SAC on the
ototoxicity induced by gentamicin in rats, by using brainstem evoked
response audiometry (BERA).
Methods. Thirty male Wistar rats with intact Preyer's reflex initially
weighing 220-260 g were randomly assigned to either the gentamicin
injection with SAMC treatment group (Genta-w SAMC), DD treatment group
(Genta-w DD), SAC treatment group (Genta-w SAC), gentamicin injection
without any active compounds (AC) treatment groups (Genta-w/o AC), or
control group (n=6 rats each group). Gentamicin was given 120-mg/kg body
weight, intraperitoneally once daily for 25 days to subjects in all
groups except the control group. SAMC 100-mg/kg, and DD 50-mg/kg body
weight were given intragastrically, and SAC 250-mg/kg body weight was
given intraperitoneally once daily to subjects in Genta-w SAMC, and
Genta-w DD, and Genta-w SAC groups, respectively during the study. After
25 days hearing thresholds were evaluated by using BERA test.
Results. The mean amplitude of auditory thresholds (sensation level
{[}SL]) measured by using BERA for the Genta-w SAMC, Genta-w DD, Genta-w
SAC, Genta-w/o AC, and control groups were 22 +/- 8, 25 +/- 5, 30 +/- 9,
54 +/- 11, and 10 +/- 7 dB SL, respectively (mean +/- SD). The
differences between every active compound group (Genta-w SAMC, Genta-w
DD, and Genta-w SAC) and Genta-w/o AC were statistically significant (P
< 0.016).
Conclusion. SAMC, DD, and SAC are derivative of garlic seems to
attenuate aminoglycoside-induced hearing loss. The effect of SAMC and DD
seems to be more prominent than that of SAC