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Article: Changes in the Urethral Artery After Experimental Subarachnoid Hemorrhage-Induced Injury of the Pudendal Ganglion and Onuf's Nucleus Junction.

Şahin, Mehmet Hakan

2023 Volume 55, Issue 3, Page(s) 239–242

Abstract: Objective: Onuf's nucleus is an anatomical structure essential in the regulation of urogenital functions. Lumbosacral pathologies may cause changes in urogenital circulation due to Onuf's nucleus injury; however, there is limited evidence corroborating ... ...

Abstract	Objective: Onuf's nucleus is an anatomical structure essential in the regulation of urogenital functions. Lumbosacral pathologies may cause changes in urogenital circulation due to Onuf's nucleus injury; however, there is limited evidence corroborating the relationship between spinal cord injury and urethral artery changes. Materials and methods: We used 23 sexually mature male rabbits-5 rabbits in the control group (GI), 5 rabbits in the sham group (GII), and 13 rabbits in the experimental group (GIII; received autologous blood transfusion into the T12-L1 subarachnoid space to induce subarachnoid hemorrhage (SAH). The GIII underwent a S1-3 laminectomy after 2 weeks and was decapitated. Histologic specimens were prepared to examine changes in Onuf's nucleus, pudendal ganglion, and urethral arteries. The density of damaged neurons and vasospasm index (VSI) in the urethral artery were evaluated. Results: The mean density of damaged neurons (n/mm3 ) in Onuf's nucleus and pudendal ganglia (S3) and the mean VSI of the 3 groups were as follows-GI: 6 ± 2 per mm3 , 12 ± 4 per mm3 , and 1.63 ± 0.25, respectively; GII: 27 ± 6 per mm3 , 221 ± 62 per mm3 , and 1.97 ± 0.36, respectively; GIII: 154 ± 41 per mm3 , 1890 ± 541 per mm3 , and 3.04 ± 0.95 (P < .05 each for GI/GII, GI/GIII, and GII/GIII). Neuronal damage criteria, such as cytoplasmic condensation and cytoplasmic halo formation, were more prominent in GIII. Conclusion: SAH can lead to ischemia of the Onuf's nucleus-pudendal nerve structures due to urethral artery spasm, resulting in urogenital complications.
Language	English
Publishing date	2023-10-31
Publishing country	Turkey
Document type	Journal Article
ZDB-ID	2577670-8
ISSN	1308-8742 ; 1308-8734
ISSN (online)	1308-8742
ISSN	1308-8734
DOI	10.5152/eurasianjmed.xxx
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Supramarginal Gyrus and Angular Gyrus Subcortical Connections: A Microanatomical and Tractographic Study for Neurosurgeons.

Şahin, Mehmet Hakan / Akyüz, Mehmet Emin / Karadağ, Mehmet Kürşat / Yalçın, Ahmet

Brain sciences

2023 Volume 13, Issue 3

Abstract: Background and Objectives: ...

Abstract	Background and Objectives:
Language	English
Publishing date	2023-03-02
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2651993-8
ISSN	2076-3425
ISSN	2076-3425
DOI	10.3390/brainsci13030430
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Article ; Online: Investigation of Ambient-pressure Absorbance Characteristics of Cartilage-grafted Tympanic Membranes.

Asta, Beyza / Bozdemir, Kazım / Şahin, Mehmet İlhan

The Journal of laryngology and otology

2024 , Page(s) 1–24

Language	English
Publishing date	2024-04-16
Publishing country	England
Document type	Journal Article
ZDB-ID	218299-3
ISSN	1748-5460 ; 0022-2151
ISSN (online)	1748-5460
ISSN	0022-2151
DOI	10.1017/S002221512400046X
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Article: Can the Length of the Tibia Nail Be Predicted Correctly Before the Operation According to the Patient's Height and Shoe Size?

Şahin, Rıfat / Şahin, Suat / Kazdal, Cengiz / Balık, Mehmet Sabri

Cureus

2024 Volume 16, Issue 1, Page(s) e52653

Abstract: Objective: Although various methods have been identified for the appropriate tibial nail length, there are disadvantages such as extra time, radiation exposure, and additional cost. We aimed to predict the ideal length of the nail according to the ... ...

Abstract	Objective: Although various methods have been identified for the appropriate tibial nail length, there are disadvantages such as extra time, radiation exposure, and additional cost. We aimed to predict the ideal length of the nail according to the patient's height and shoe size in the preoperative period to eliminate these disadvantages. Materials and methods: Between January 2018 and August 2023, the height and shoe size data of 71 patients who were diagnosed with tibial shaft fracture and had tibia intramedullary nail fixation were determined. A linear regression model was applied to the normally distributed data. The correlation coefficient between the variables was evaluated according to the Pearson correlation coefficient. Results: While 1 1-centimeter (cm) increase in patient height causes an increase of 3.2 millimeters (mm) in nail length, it was found that it alone contributed by 89% to predicting the ideal nail length (p<0.001). An increase of 1 unit in shoe size (EU) causes an increase of 9 mm in nail length; its contribution to predicting the ideal nail length alone is 84% (p<0.001). In the evaluation of the patient's height and shoe size together, it was observed that they jointly contributed 91% to the accurate estimation of the nail length (p<0.001). Conclusion: It may be risky to determine the tibial nail length only by shoe size or the patient's height. However, the correlation between them is strong. Therefore, by estimating nail lengths before the operation, the ideal nail length can be found by making fewer fluoroscopy checks during the operation.
Language	English
Publishing date	2024-01-21
Publishing country	United States
Document type	Journal Article
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.52653
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Article ; Online: Impact of weather on COVID-19 pandemic in Turkey.

Şahin, Mehmet

The Science of the total environment

2020 Volume 728, Page(s) 138810

Abstract: The coronavirus pandemic, which has numerous global implications, has led people to believe that nothing will be the same as before. The present day is dominated by studies on determining the factors that affect, taking preventive actions, and trying to ... ...

Abstract	The coronavirus pandemic, which has numerous global implications, has led people to believe that nothing will be the same as before. The present day is dominated by studies on determining the factors that affect, taking preventive actions, and trying to find an effective treatment on top priority. Meteorological parameters are among the crucial factors affecting infectious diseases. The present study examines the correlation between weather and coronavirus disease 2019 (COVID-19) by considering nine cities in Turkey. In this regard, temperature (°C), dew point (°C), humidity (%), and wind speed (mph) are considered as parameters of weather. Research states that the incubation period of COVID-19 varies from 1 day to 14 days. Therefore, the effects of each parameter within 1, 3, 7, and 14 days are examined. In addition, the population is included as an effective parameter for evaluation. The analyses are conducted based on Spearman's correlation coefficients. The results showed that the highest correlations were observed for population, wind speed 14 days ago, and temperature on the day, respectively. The study results may guide authorities and decision-makers on taking specific measures for the cities.
MeSH term(s)	Betacoronavirus ; COVID-19 ; Cities ; Coronavirus Infections/epidemiology ; Humans ; Humidity ; Pandemics ; Pneumonia, Viral/epidemiology ; SARS-CoV-2 ; Temperature ; Turkey/epidemiology ; Weather ; Wind
Keywords	covid19
Language	English
Publishing date	2020-04-20
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2020.138810
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Article ; Online: New surgical technique for non-missile trauma hemostasis as a result of sewing needle.

Şahin, Mehmet Hakan / Zeynal, Mete

Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery

2023 Volume 39, Issue 3, Page(s) 781–785

Abstract: Traumas are the most important cause of mortality in the pediatric population. Bleeding is an important complication, especially in traumatic brain injuries with coagulation problem addition. Low-velocity penetrating brain injuries may be caused by ... ...

Abstract	Traumas are the most important cause of mortality in the pediatric population. Bleeding is an important complication, especially in traumatic brain injuries with coagulation problem addition. Low-velocity penetrating brain injuries may be caused by sewing needles, nails, and knives. There are few studies in the literature for this injury type. This study presented a surgical technique and treatment to increase hemostasis in a 2-year-old patient after a sewing needle injury.
MeSH term(s)	Humans ; Child ; Child, Preschool ; Foreign Bodies/surgery ; Head Injuries, Penetrating/surgery ; Needles ; Brain Injuries, Traumatic/complications ; Hemostasis
Language	English
Publishing date	2023-01-14
Publishing country	Germany
Document type	Case Reports ; Journal Article
ZDB-ID	605988-0
ISSN	1433-0350 ; 0302-2803 ; 0256-7040
ISSN (online)	1433-0350
ISSN	0302-2803 ; 0256-7040
DOI	10.1007/s00381-023-05831-5
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Article: Localized Pigmented Villonodular Synovitis of the Knee Joint: A Case Report.

Sahin, Mehmet Sukru

Journal of orthopaedic case reports

2022 Volume 12, Issue 4, Page(s) 44–48

Abstract: Background: The localized form is characterized by local participation of the synovium as a nodule or pedunculated mass. The incidence rate of PVNS is estimated to be 1.8 per million people - the localized type is just one-quarter of that. The aim of ... ...

Abstract	Background: The localized form is characterized by local participation of the synovium as a nodule or pedunculated mass. The incidence rate of PVNS is estimated to be 1.8 per million people - the localized type is just one-quarter of that. The aim of this study is to remind orthopedic surgeons about the unusual properties of LPVNS located in the knee. Case report: A 39-year-old man presented to our clinic with pain and discomfort in his right knee. Magnetic resonance imaging showed an intra-articular mass in the infrapatellar region of the knee adjacent to the Hoffa fat pad. The mass was hypointense in the T1 sequence and heterogeneously hyperintense in the T2 sequence, which may be considered a local type of tenosynovial giant cell tumor (LPVNS). Excision was carefully performed without penetrating the tumor. The macroscopic appearance of the tumor was yellow-reddish and brown in color. Histopathologic examination revealed pigmented villonodular synovitis of the local type. Conclusion: Even though the LPVNS of the knee is an uncommon intra-articular phenomenon, orthopedic surgeons should not overlook this lesion based on imaging findings, and open excision should be regarded as a reliable treatment option.
Language	English
Publishing date	2022-11-11
Publishing country	India
Document type	Case Reports
ZDB-ID	2658169-3
ISSN	2250-0685
ISSN	2250-0685
DOI	10.13107/jocr.2022.v12.i04.2760
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Article: A pilot study of a novel paclitaxel-coated angioplasty catheter for lower extremity peripheral artery disease: a pilot study.

Şahin, Serpil / Yılmaz, Mehmet Ali

Kardiochirurgia i torakochirurgia polska = Polish journal of cardio-thoracic surgery

2023 Volume 20, Issue 1, Page(s) 24–29

Abstract: Aim: The aim of the study was to report our preliminary results and real-world experiences regarding the use of a novel paclitaxel-coated balloon catheter in a cohort of patients with lower extremity peripheral artery disease at different stages.: ... ...

Abstract	Aim: The aim of the study was to report our preliminary results and real-world experiences regarding the use of a novel paclitaxel-coated balloon catheter in a cohort of patients with lower extremity peripheral artery disease at different stages. Material and methods: A prospective cohort pilot study was conducted and the study group was made up of a total of 20 patients with peripheral artery disease who underwent endovascular balloon angioplasty with BioPath 014 or 035, a novel paclitaxel-coated, shellac containing balloon catheter. Eleven patients had a total of 13 TASC II-A lesions, 6 patients had a total of 7 TASC II-B lesions, 2 patients had TASC II-C lesions, 2 patients had TASC II-D lesions. Results: In 13 patients, a single attempt with a BioPath catheter was adequate to treat a total of 20 target lesions, whereas in 7 patients more than one attempt with a different sized BioPath catheter was necessary. In 5 patients, total or near-total occlusion in the target vessel was initially treated with an appropriate sized chronic total occlusion catheter. Thirteen (65%) patients had at least one categorical improvement in Fontaine classification and none had symptomatic worsening. Conclusions: The BioPath paclitaxel-coated balloon catheter seems to offer a useful alternative to the similar devices for treatment of femoral-popliteal artery disease. These preliminary results warrant confirmation with further research to reveal the safety and efficacy of the device.
Language	English
Publishing date	2023-04-03
Publishing country	Poland
Document type	Journal Article
ZDB-ID	2237053-5
ISSN	1897-4252 ; 1731-5530
ISSN (online)	1897-4252
ISSN	1731-5530
DOI	10.5114/kitp.2023.126095
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Article: The role of ONSD in the assessment of headache associated with Chiari malformation type 1.

Karadag, Mehmet Kürşat / Akyuz, Mehmet Emin / Sahin, Mehmet Hakan

Frontiers in neurology

2023 Volume 14, Page(s) 1127279

Abstract: Background: Cough associated headache is the most common symptom in Chiari malformation type 1 (CM1). However, its pathophysiology and treatment are not clear. The aim of this study was to investigate the relationship between optic nerve sheath diameter ...

Abstract	Background: Cough associated headache is the most common symptom in Chiari malformation type 1 (CM1). However, its pathophysiology and treatment are not clear. The aim of this study was to investigate the relationship between optic nerve sheath diameter (ONSD), an indicator of intracranial pressure, and headache and to investigate its predictive value on postoperative outcome. Methods: In symptomatic CM1 patients, craniovertebral junction morphometric measurements and ONSD measurements were made from preoperative MR images, and headache intensities and characteristics were evaluated. After different surgical procedures, the clinical characteristics of the patients were evaluated according to the Chicago Chiari Outcome Scale, the change in headache intensity was assessed and the relationship with ONSD was evaluated. Results: Preoperative headache intensity was significantly correlated with ONSD measurement ( Conclusion: The fact that ONSD is found to be wide in the preoperative period in CM1 patients indicates that the intracranial pressure is permanently high. This diameter increase is correlated with headache and is a valuable guide in the selection of the appropriate treatment method.
Language	English
Publishing date	2023-02-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2564214-5
ISSN	1664-2295
ISSN	1664-2295
DOI	10.3389/fneur.2023.1127279
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Article: The Accuracy and Cost-Effectiveness of MRI Assessment of Collateral Ligament Injuries of the Lesser Digits' Proximal Interphalangeal Joints.

Sahin, Mehmet S

Cureus

2022 Volume 14, Issue 8, Page(s) e28306

Abstract: Background Collateral ligament injuries of the thumb and lesser digits are simple injuries, but they may lead to disabilities in hand function. This study aimed to evaluate the accuracy and cost-effectiveness of magnetic resonance imaging (MRI) in ... ...

Abstract	Background Collateral ligament injuries of the thumb and lesser digits are simple injuries, but they may lead to disabilities in hand function. This study aimed to evaluate the accuracy and cost-effectiveness of magnetic resonance imaging (MRI) in diagnosing proximal interphalangeal (PIP) collateral ligament injuries of lesser digits. Methods A retrospective evaluation was conducted on 18 fingers that had undergone surgery for PIP joint complete collateral ligament injury. Pre-operative MRI results were compared with the intra-operative findings. The data from MRI and direct intraoperative findings were analyzed by the Chi-square test in paired groups. The McNemar test analyzed the accuracy of the MRI test for detecting volar plate injuries. Statistical Packages for Social Sciences (SPSS) version 25 (IBM Inc., Armonk, New York) software program was used for the analysis. Results In digits other than the thumb, the accuracy of MRI for detecting collateral injuries was 38.89%, and detection was incorrect in 11 (61.11%) of 18 patients. There are significant differences between MRI and Intraoperative results (p<0.001). MRI findings for seven fingers (38.89%) of the 18 fingers involved were compatible with the surgery results (38.88%). By comparison, the MRI findings of 11 fingers (61.11%) were inconsistent with the intra-operative results. Eight patients (44.44%) were diagnosed preoperatively with MRI as having volar plate ruptures, three patients (16.67%) were diagnosed with open surgery, but only three of the volar plate diagnosed patients with MRI were verified as ruptures during open surgery (38.0%). In addition, preoperatively undetected volar plate injuries by MRI (n=10) were detected intra-operatively in three cases (30.0%). Therefore, the accuracy of MRI was found not to be statistically significant for the detection of volar plate injuries (p=0.727). Conclusion This study concluded that a 1.5-Tesla MRI with a slice thickness of 2-3 mm should not be relied on as a decisive tool for diagnosing collateral ligament injuries of the PIP joint of the lesser digits. Additionally, MRI was found insufficient for diagnosing volar plate injuries that accompanied collateral ligament injuries. Given these findings, one might conclude that MRI is not cost-effective in diagnosing collateral ligament injuries of the lesser digits PIP joint.
Language	English
Publishing date	2022-08-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	2747273-5
ISSN	2168-8184
ISSN	2168-8184
DOI	10.7759/cureus.28306
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