Radiological measurement of cochlear dimensions in cochlear hypoplasia and its effect on cochlear implant selection

2021 ◽  
pp. 1-7
Author(s):  
G Pamuk ◽  
A E Pamuk ◽  
A Akgöz ◽  
M D Bajin ◽  
B Özgen ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Lateral Wall ◽  
Control Group ◽  
Type I ◽  
Basal Turn ◽  
Radiological Measurement ◽  
Computed Tomography Images ◽  
Implant Selection ◽  
Incomplete Partition ◽  
Electrode Selection

Abstract Objective To determine the effect of cochlear dimensions on cochlear implant selection in cochlear hypoplasia patients. Methods Temporal bone computed tomography images of 36 patients diagnosed with cochlear hypoplasia between 2010 and 2016 were retrospectively reviewed and compared with those of 40 controls without sensorineural hearing loss. Results Basal turn length and mid-modiolar height were significantly lower in the cochlear hypoplasia patients with subtypes I, II and III than in the control group (p < 0.001). Mid-scalar length was significantly shorter in subtype I–III patients as compared with the control group (p < 0.001). In addition, cochlear canal length (measured along the lateral wall) was significantly shorter in subtype I–IV patients than in the control group (subtypes I–III, p < 0.001; subtype IV, p = 0.002) Conclusion Cochlear hypoplasia should be considered if basal turn length is less than 7.5 mm and mid-modiolar height is less than 3.42 mm. The cochlear implant should be selected according to cochlear hypoplasia subgroup. It is critically important to differentiate subtype II from incomplete partition type I and subtype III from a normal cochlea, to ensure the most appropriate implant electrode selection so as to optimise cochlear implantation outcomes.

scholarly journals Incomplete Partition Type III: Computed Tomography Features and Cochlear Implantation Complications

2021 ◽  
Vol 36 (4) ◽  
pp. e286-e286
Author(s):  
Raya Salim Al-Busaidi ◽  
Salwa Jaffar Habib ◽  
Ammar Mohsin Al-Lawati ◽  
Khalid Tahhan ◽  
Yousuf Al-Saidi
Keyword(s):  
Computed Tomography ◽  
Cochlear Implant ◽  
Revision Surgery ◽  
Cochlear Implantation ◽  
Internal Auditory Canal ◽  
High Resolution Computed Tomography ◽  
Type Iii ◽  
Implant Selection ◽  
Incomplete Partition ◽  
Electrode Selection

In this case report, we review a male child who presented with severe bilateral hearing loss. Preoperative high-resolution computed tomography (HRCT) evaluation facilitated the initial diagnosis of the disease, which revealed typical findings of cochlear incomplete partition type III anomaly (IP-III), surgical planning, and cochlear implant selection to avoid possible complications. The child underwent cochlear implantation, which resulted in gushing and misplacement of the electrodes into the internal auditory canal (IAC) as postoperative complications. Postoperative imaging was used to determine the position of the implant and to assess the complications. The child’s postoperative X-ray revealed misplacement of the cochlear implant, the extent of which was further assessed by a HRCT scan for preplanning the revision surgery and electrode selection. Following the revision surgery, a further HRCT scan confirmed proper implantation and ruled out any further complications.

scholarly journals The severity of developmental dysplasia of the hip does not correlate with the abnormality in pelvic incidence

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Rongshan Cheng ◽  
Muyin Huang ◽  
Willem Alexander Kernkamp ◽  
Huiwu Li ◽  
Zhenan Zhu ◽  
...  
Keyword(s):  
Pelvic Incidence ◽  
Sagittal Plane ◽  
Three Dimensional ◽  
Developmental Dysplasia ◽  
Control Group ◽  
Type I ◽  
Type Ii ◽  
Computed Tomography Images ◽  
Significant Difference ◽  
Dysplasia Of The Hip

Abstract Background The purpose of this study was to investigate the association between the severity of Developmental dysplasia of the hip (DDH) and the abnormality in pelvic incidence (PI). Methods This was a retrospective study analyzing 53 DDH patients and 53 non-DDH age-matched controls. Computed tomography images were used to construct three-dimensional pelvic model. The Crowe classification was used to classify the severity of DDH. The midpoint of the femoral head centers and sacral endplates were projected to the sagittal plane of the pelvis. The PI was defined as the angle between a line perpendicular to the sacral plate at its midpoint and a line connecting this point to the axis of the femoral heads. Independent sample t-tests were used to compare the differences between the PI of DDH group and the non-DDH controls group. Kendall’s coefficient of concordance was used to determine the correlation between the severity of DDH and PI. Results Patients with DDH had a significantly (p = 0.041) higher PI than the non-DDH controls (DDH 47.6 ± 8.2°, normal 44.2 ± 8.8°). Crowe type I patients had a significantly (p = 0.038) higher PI (48.2 ± 7.6°) than the non-DDH controls. No significant difference between the PI in Crowe type II or III patients and the PI in non-DDH controls were found (Crowe type II, 50.2 ± 9.6°, p = 0.073; Crowe type III, 43.8 ± 7.2°, p = 0.930). No correlation was found between the severity of DDH and the PI (r = 0.091, p = 0.222). Conclusions No correlation was found between the severity of DDH and the PI. The study confirmed that the PI in DDH (Crowe type I) group was higher than that of the non-DDH control group, while the PI does not correlate with the severity of DDH.

scholarly journals Potential implications of slim modiolar electrodes for severely malformed cochlea: A comparison with the straight array with circumferential electrodes

2021 ◽  
Author(s):  
Sang-Yeon Lee ◽  
Byung Yoon Choi
Keyword(s):  
Spiral Ganglion ◽  
Compound Action Potential ◽  
Lateral Wall ◽  
Electrode Position ◽  
Type I ◽  
Evoked Compound Action Potential ◽  
Incomplete Partition ◽  
Auditory Performance ◽  
Ganglion Neurons ◽  
Selection Of

Objectives: Malformations of the inner ear account for approximately 20% of congenital deafness. In current practice, the straight arrays with circumferential electrodes (i.e., full-banded electrodes) are widely used in severely malformed cochlea. However, the unpredictability of the location of residual spiral ganglion neurons in such malformations argues against obligatorily pursuing the full-banded electrode in all cases. Here, we present an experience of electrically evoked compound action potential (ECAP) and radiography-based selection of an appropriate electrode for severely malformed cochlea. Methods: Three patients with the severely malformed cochlea, showing cochlear hypoplasia type II (CH-II), incomplete partition type I (IP-I), and cochlear aplasia with a dilated vestibule (CADV), were included, and the cochlear nerve deficiency (CND) was evaluated. Full-banded electrode (CI24RE(ST)) and slim modiolar electrode (CI632) were alternately inserted to compare ECAP responses and electrode position. Results: In patient 1 (CH-II with CND) who had initially undergone cochlear implantation (CI) using the lateral wall electrode (CI422), a revision CI was performed due to incomplete insertion of CI422 and resultant unsatisfactory performance, thus explanting the CI422 and re-inserting the CI24RE(ST) and CI632 sequentially. Although both electrodes elicited reliable ECAP responses with correct positioning, CI24RE(ST) showed overall lower ECAP thresholds compared to CI632; thus, CI24RE(ST) was selected. In patient 2 (IP-I with CND), CI632 elicited superior ECAP responses relative to CI24RE(ST), with correct positioning of the electrode; CI632 was chosen. In patient 3 (CADV), CI632 did not elicit an ECAP response while meaningful ECAP responses were obtained with the CI24RE(ST) array once correct positioning was achieved. All patients markedly improved auditory performance postoperatively. Conclusion: ECAP and radiography-based strategy for an appropriate electrode may be useful for severely malformed cochlea, leading to enhanced functional outcomes. Additionally, the practice of sticking to the full-banded straight electrode may not always be the best for IP-I and CH-II.

A Revision Surgery for Cochlear Implantation in a Case of Incomplete Partition Type I

2016 ◽  
Vol 27 (10) ◽  
pp. 846-850 ◽  
Author(s):  
Habib G. Rizk ◽  
Francesca Hagood ◽  
Meredith A. Holcomb ◽  
Ted A. Meyer
Keyword(s):  
Cochlear Implant ◽  
Inner Ear ◽  
Revision Surgery ◽  
Cochlear Implantation ◽  
Type I ◽  
Facial Recess ◽  
Long Term Follow Up ◽  
Incomplete Partition

Background: Patients with cochlear malformations were long considered poor candidates for cochlear implantation (CI), and surgical approaches different than the standard facial recess approach were used to access the inner ear. There is no previous long-term follow-up of a patient with significantly malformed inner ear operated through an untraditional route and requiring a revision surgery. Purpose: This case provides a long-term follow-up from the initial surgery, a short-term follow-up from the revision surgery, and it illustrates the evolving classification of inner ear malformations as well as the potential problems associated with nonstandard approaches to the cochlea. Research Design: A case report. Intervention: Herein, we report a case of revision CI in a patient with incomplete partition type I, through the round window via a facial recess approach, 18 yr after an initial implantation via a transmastoid labyrinthotomy approach. Results: The patient had an uncomplicated surgery, and after activation, she noted auditory perception on all electrodes without facial stimulation. A sound field sound awareness threshold was obtained at 15 dB HL. Conclusions: As the prior generation of cochlear implant recipients ages, the probability of a revision surgery for various causes increases. Cochlear implant surgeons should be aware of the potential pitfalls associated in these often challenging cases.

Cochlear Implant in Patients with Incomplete Partition Type III

2009 ◽  
Vol 52 (6) ◽  
pp. 492 ◽  
Author(s):  
Jae Hyuk Choi ◽  
Kyu Yup Lee ◽  
Eun Jung Lim ◽  
Sang Heun Lee
Keyword(s):  
Cochlear Implant ◽  
Type Iii ◽  
Incomplete Partition

CARDIOVASCULAR RISK FACTORS PECULIARITIES IN MEN UNDER 60 YEARS OLD WITH MYOCARDIAL INFARCTION AND CHRONIC INFLAMMATORY LUNG DISEASES

2020 ◽  
pp. 21-25
Author(s):  
Tupitsyn V.V. ◽  
Bataev Kh.M. ◽  
Men’shikova A.N. ◽  
Godina Z.N.
Keyword(s):  
Risk Factors ◽  
Myocardial Infarction ◽  
Heart Disease ◽  
Cardiovascular Risk ◽  
Digestive System ◽  
Control Group ◽  
Study Group ◽  
Type I ◽  
Internal Organs ◽  
History Of

Relevance. Information about the cardiovascular diseases risk factors (CVD RF) for in men with chronic lung inflam-matory pathology (CLID) is contradictory and requires clarification. Aim. To evaluate the peculiarities of CVD RF in men under 60 years of age with CLID in myocardial infarction (MI) to improve prevention. Material and methods. The study included men aged 19-60 years old with type I myocardial infarction. Patients are divided into two age-comparable groups: I - the study group, with CLID - 142 patients; II - control, without it - 424 patients. A comparative analysis of the frequency of observation of the main and additional cardiovascular risk fac-tors in groups was performed. Results. In patients of the study group, more often than in the control group we observed: hereditary burden of is-chemic heart disease (40.8 and 31.6%, respectively; p = 0.0461) and arterial hypertension (54.2 and 44.6%; p = 0.0461), frequent colds (24.6 and 12.0%; p = 0.0003), a history of extrasystoles (19.7 and 12.7%; p = 0.04); chronic foci of infections of internal organs (75.4 and 29.5%; p˂0.0001), non-ulcer lesions of the digestive system (26.1 and 14.6%; p = 0.007), smoking (95.1 and 66.3%; p˂0.0001), MI in winter (40.8 and 25.9%; p = 0.006). Less commonly were observed: oral cavity infections (9.2 and 23.6%; p˂0.0001); hypodynamia (74.5 and 82.5%; p = 0.0358), over-weight (44.4 and 55.2%; p = 0.0136), a subjective relationship between the worsening of the course of coronary heart disease and the season of the year (43.7 and 55.2%; p = 0.0173) and MI - in the autumn (14.1 and 21.9%; p = 0.006) period. Conclusions. The structure of CVD RF in men under 60 years of age with CLID with MI is characterized by the pre-dominance of smoking, non-ulcer pathology of the digestive system, frequent pro-student diseases, meteorological dependence, a history of cardiac arrhythmias and foci of internal organ infections. It is advisable to use the listed factors when planning preventive measures in such patients.

PENGARUH PEMBERIAN KOMBINASI EKSTRAK BUAH MENGKUDU (Morinda citrifolia L.) DAN KUNYIT (Curcuma longa) TERHADAP HISTOPATOLOGI GINJAL TIKUS WISTAR YANG DIINDUKSI ALLOXAN

2020 ◽  
Vol 5 (2) ◽  
pp. 319-327
Author(s):  
Pelastri Rahayu ◽  
◽  
Retno Hestiningsih ◽  
Martini Martini ◽  
Dwi Sutiningsih ◽  
...  
Keyword(s):  
Body Weight ◽  
Diabetic Nephropathy ◽  
Blood Glucose ◽  
Curcuma Longa ◽  
Morinda Citrifolia ◽  
Control Group ◽  
Type I ◽  
Turmeric Extract ◽  
Measurement Results ◽  
Diabetes Nephropathy

The prevalence of DM in Riskesdas in 2018 according to the Perkeni consensus in 2015 is higher than according to the Perkeni consensus in 2011, the prevalence was10.9%. The disease can develop into diabetes nephropathy, Increased prevalence of diabetic nephropathy directly proportional with an increase in diabetes prevalence. Diabetic nephropathy is a microvascular complication in diabetics that develops around 30% in patients with type I DM and about 40% in patients with type II DM. Turmeric extract has antioxidant and anti-inflammatory effects to prevent the bad development of diabetes nephropathy. This study looked at the effect of giving a combination of noni and turmeric extract on histopathology of alloxan-induced renal rats. A total of 25 mice were divided into 5 treatment groups, namely the PI group (250 mg / kgBB extract dose), PII group (500 mg / kgBB extract dose), PIII group (750 mg / kgBB extract dose), positive control group (glibenklamid) and negative control group (without extract and glibenklamid). The study used Post Test Only Group. The highest percentage decrease in blood glucose in the PI group was 56.11% and the lowest decrease in the PIII group was 24.12% with p = 0.012. The results of the study were not based on the number of extract doses. The measurement results of rat body weight and glomerular diameter were not affected by blood glucose level with p = 0.700 for body weight and p = 0.187 for glomerular measurement results.

Antidiabetic and Hypolipidemic Effects of Extracts of Gymnema Sylvestre in Streptozotocin Induced Type I Diabetes in Rats

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Nishtha R. Mahida ◽  
G. . Mandali ◽  
Vijaysinh V. Sindha ◽  
S. K. Raval
Keyword(s):  
Blood Glucose ◽  
Lipid Profile ◽  
Type I Diabetes ◽  
Histopathological Examination ◽  
Diabetic Control ◽  
Hypolipidemic Activity ◽  
Control Group ◽  
Type I ◽  
Gymnema Sylvestre ◽  
Altered Glucose

Gymnema sylvestre of the family Asclepiadaceae is one of the most important medicinal plants of the central eco-region. It is popularly known as Gurmar, which means “sugar killer”. Extract of leaves is reported to have tannins, gum, flavonoids, proteins and saponins. It has displayed a wide array of pharmacological activities. This study was aimed to investigate the antidiabetic and hypolipidemic effects of Gymnema sylvestre extract in experimentally induced diabetes in rats. Diabetes was produced in adult Wistar rats with single dose of streptozotocin (STZ) @ 60 mg/kg b.wt. intraperitoneally. After the confirmation of diabetes on 7th day (sugar >200 mg/dl), alcoholic and aqueous extracts of G. sylvestre (400 mg/kg) were administered orally to the experimental rats from 8th day and continued for 42 days thereafter. The antidiabetic and hypolipidemic activity was estimated by measuring blood glucose, lipid profile and histopathological examination of various tissues from all the groups. Administration of STZ resulted in a significant (p less than 0.01) increase in blood glucose and lipid profile and histopathological alterations in Diabetic control group as compared to healthy control group. Gymnema treatment demonstrated significant (p less than 0.01) antidiabetic effect indicated by restoration of blood glucose compared to STZ control group. The study concluded that extracts of Gymnema sylvestre improved the altered glucose and lipid profile in diabetic rats, suggesting that the Gymnema Sylvestre extracts exhibit the antidiabetic and hypolipidemic activity.

Long-Term Follow-Up of Early Cochlear Implant Device Activation

2021 ◽  
pp. 1-11
Author(s):  
Stefanie Bruschke ◽  
Uwe Baumann ◽  
Timo Stöver
Keyword(s):  
Speech Recognition ◽  
Side Effects ◽  
Cochlear Implant ◽  
Surgical Techniques ◽  
Control Group ◽  
First Year ◽  
Safe Procedure ◽  
Sound Processor

Background: The cochlear implant (CI) is a standard procedure for the treatment of patients with severe to profound hearing loss. In the past, a standard healing period of 3–6 weeks occurred after CI surgery before the sound processor was initially activated. Advancements of surgical techniques and instruments allow an earlier initial activation of the processor within 14 days after surgery. Objective: Evaluation of the early CI device activation after CI surgery within 14 days, comparison to the first activation after 4–6 weeks, and assessment of the feasibility and safety of the early fitting over a 12 month observation period were the objectives of this study. Method: In a prospective study, 127 patients scheduled for CI surgery were divided into early fitting group (EF, n = 67) and control group (CG, n = 60). Individual questionnaires were used to evaluate medical and technical outcomes of the EF. Medical side effects, speech recognition, and follow-up effort were compared with the CG within the first year after CI surgery. Results: The early fitting was feasible in 97% of the EF patients. In the EF, the processor was activated 25 days earlier than in the CG. No major complications were observed in either group. At the follow-up appointments, side effects such as pain and balance problems occurred with comparable frequency in both groups. At initial fitting, the EF showed a significantly higher incidence of medical minor complications (p < 0.05). When developing speech recognition within the first year of CI use, no difference was observed. Furthermore, the follow-up effort within the first year after CI surgery was comparable in both groups. Conclusions: Early fitting of the sound processor is a feasible and safe procedure with comparable follow-up effort. Although more early minor complications were observed in the EF, there were no long-term wound healing problems caused by the early fitting. Regular inspection of the magnet strength is recommended as part of the CI follow-up since postoperative wound swelling must be expected. The early fitting procedure enabled a clear reduction in the waiting time between CI surgery and initial sound processor activation.

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