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Dive into the research topics where Mehmet Kaynar is active.

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Featured researches published by Mehmet Kaynar.


Urology | 2012

On-demand tramadol hydrochloride use in premature ejaculation treatment.

Mehmet Kaynar; Ozcan Kilic; Talat Yurdakul

OBJECTIVES To determine the efficacy of tramadol in premature ejaculation (PE) treatment compared with placebo. METHODS A single-blind, placebo-controlled, crossover study was conducted with 60 lifelong (primary) patients with PE. The patients were randomized into 2 groups, each consisting of 30 patients, who took tramadol or placebo on demand. PE was defined as an intravaginal ejaculation latency time of ≤60 seconds in 90% of intercourse episodes. The efficacy of the drugs was assessed using the intravaginal ejaculation latency time, ability of ejaculation control, and sexual satisfaction scores after an 8-week treatment period. RESULTS All participants completed the study voluntarily. Two groups were similar in terms of the patient demographics. Increases in the intravaginal ejaculation latency time, ability of ejaculation control, and sexual satisfaction score between the placebo and tramadol groups were compared with the baseline values in both groups. At the end of study period, the tramadol group had significantly (P<.001) greater values for all 3 parameters compared with those in the placebo group. CONCLUSIONS On-demand use of low-dose tramadol is effective for lifelong PE. Currently, selective seratonin reuptake inhibitors such as dapoxetine, are a more popular treatment option for PE. However, tramadol might be considered an alternative agent for primary PE treatment.


American Journal of Emergency Medicine | 2015

Comparison of the efficacy of diclofenac, acupuncture, and acetaminophen in the treatment of renal colic

Mehmet Kaynar; Ferudun Koyuncu; Ibrahim Buldu; Erdem Tekinarslan; Abdulkadir Tepeler; Tuna Karatag; Mustafa Okan Istanbulluoglu; Kadir Ceylan

OBJECTIVE The objective is to compare the analgesic effects of diclofenac, acetaminophen, and acupuncture in urolithiasis-driven renal colic pain relief. METHODS Renal colic patients were divided randomly into 3 groups. Patients in group I (n = 40) were treated with intravenous acetaminophen, those in group II (n = 41) with acupuncture, and those in group III (n = 40) with a 75-mg intramuscular injection diclofenac sodium. Visual analogue scale (VAS) and verbal rating scale (VRS) were used to assess pain intensity after 10, 30, 60, and 120 minutes. RESULTS No significant differences in baseline VAS or VRS were found with regard to age or sex. After 10 minutes, all 3 groups experienced a significant decrease in VAS and VRS scores, with the most drastic decrease occurring in group II. After 30 minutes, there was a significantly higher decrease in group III than in group I (P = .001). After 60 minutes, mean VAS scores of groups I and III (P = .753) were similar. The mean VAS score of group III was lower than that of group II (P = .013). After 120 minutes, the difference in the VAS scores was (P = .000) between groups I and II and between groups II and III. Yet, the VAS evaluation made after 120 minutes revealed statistically similar outcomes for groups I and III (P = .488). The statistical findings for VRS evaluations made after 10, 30, 60, and 120 were similar to those for VAS. CONCLUSIONS In renal colic patients with a possible nonsteroidal anti-inflammatory drug and acetaminophen side effect risk, acupuncture emerges as an alternative treatment modality.


Andrologia | 2009

Partial priapism secondary to tamsulosin: a case report and review of the literature.

Mehmet Kilinc; Mesut Piskin; Selcuk Guven; Recai Gurbuz; Kemal Ödev; Mehmet Kaynar

Partial priapism is also called partial segmental thrombosis of the corpus cavernosum. It is a rare pathology, and its aetiology, physiopathology and treatment are still not completely understood. To our knowledge, partial priapism due to alpha blockers has not been reported previously in the literature. In this study, a successfully treated case of partial priapism occurring after the usage of alpha blocker is presented and discussed in light of the related literature.


Kaohsiung Journal of Medical Sciences | 2015

What is harmful for male fertility: Cell phone or the wireless internet?

Mehmet Erol Yildirim; Mehmet Kaynar; Hüseyin Badem; Mücahit Çaviş; Omer Faruk Karatas; Ersin Cimentepe

In this study, we aimed to assess the potential harmful effects of radiofrequency‐electromagnetic radiation on sperm parameters. We requested semen for analyses from the male patients coming to our infertility division and also asked them to fill out an anonymous questionnaire. We queried their mobile phone and wireless internet usage frequencies in order to determine their radiofrequency‐electromagnetic radiation exposure. A total of 1082 patients filled the questionnaire but 51 of them were excluded from the study because of azoospermia. There was no significant difference between sperm counts and sperm morphology excluding sperm motility, due to mobile phone usage period, (p = 0.074, p = 0.909, and p = 0.05, respectively). The total motile sperm count and the progressive motile sperm count decreased due to the increase of internet usage (p = 0.032 and p = 0.033, respectively). In line with the total motile sperm count, progressive motile sperm count also decreased with wireless internet usage compared with the wired internet connection usage (p = 0.009 and p = 0.018, respectively). There was a negative correlation between wireless internet usage duration and the total sperm count (r = −0.089, p = 0.039). We have also explored the negative effect of wireless internet use on sperm motility according to our preliminary results.


World Journal of Surgical Oncology | 2015

Management of patients with retroperitoneal tumors and a review of the literature

Kazım Gemici; Ibrahim Buldu; Turker Acar; Hüsnü Alptekin; Mehmet Kaynar; Erdem Tekinarslan; Tuna Karatag; Duran Efe; Haldun Çolak; Tevfik Küçükkartallar; Mustafa Okan Istanbulluoglu

BackgroundRetroperitoneal tumors (RTs) develop insidiously and are generally seen as large masses, and 50% of RTs are larger than 20 cm at the time of diagnosis. In this article, we share our experience of 5 years of surgical management of RTs.MethodsWe evaluated 28 RT cases operated on in three education hospitals in Turkey from January 2008 onwards, with regard to patients’ demographic characteristics, complaints, weight loss figures, the location and size of the tumor, blood transfusion, intra-operational time, metastases (in malignant cases), additional organ resection, histological grade, local recurrences, average life expectancy, and post-operative treatment methods.ResultsThe mean age of the patients was 49 years (range, 18 to 78 years). Twenty (71.43%) were female, and 8 (28.57%) were male. The primary complaint was abdominal pain in 18 patients (64.28%). CT scans were performed in 17 (61%) patients, 10 (35.4%) underwent abdominal MR imaging, and 1 (3.6%) underwent both abdominal CT and abdominal MR imaging. A mass was palpated in the pelvis (suprapubic region) in seven (25%) of the patients during physical examination. The largest tumors were detected in the left lumbar area. The mean tumor size was 12.78 cm (range, 2 to 30 cm). The mean intra-operational time was 192 min (range, 70 to 380 min). The mean hospitalization period was 11 days (range, 8 to 23 days). Seven (25%) patients were reported to have benign tumors, while 21 (75%) were reported to have malignant tumors. The most frequently seen malignant pathology was liposarcoma (eight cases; 38.09%) followed by leiomyosarcoma (five cases; 23.8%) and malignant fibrous histiocytoma (four cases; 19.04%). The earliest local recurrence was detected in the 12th month and the latest in the 28th month. A total of 11 (52.3%) of the total of 21 malignant cases experienced local recurrence within 3 years. The 3-year average life expectancy was 85.7% in the 18 malignant cases.ConclusionsDue to the low response rate of all but two types of RT to chemotherapy, the best remaining treatment option is surgery with wide resection margins, whereby all macroscopic traces of tumor are removed.


Journal of Endourology | 2013

A New Hemostatic Agent (Ankaferd Blood Stopper®) in Tubeless Percutaneous Nephrolithotomy: A Prospective Randomized Study

Mustafa Okan Istanbulluoglu; Mehmet Kaynar; Tufan Çiçek; Murat Kosan; Bulent Ozturk; Hakan Ozkardes

PURPOSE The present study evaluates the efficiency and reliability of a hemostatic agent ABS (Ankaferd Blood Stopper(®)) in tubeless percutaneous nephrolithotomy (PCNL). PATIENTS AND METHODS A total of 90 patients were divided into two subgroups. The first group had ABS applied during the intervention, whereas the control group underwent regular tubeless PCNL in this prospective randomized study. Age, stone size, operative time, postoperative hemoglobin change, renal parenchyma thickness, postoperative ureteral catheter removal time, access number, nephroscope time, blood transfusion rate, serum creatinine change, complication rate, visual analogue scale (VAS), and hospitalization time were compared between the two groups. RESULTS Preoperative and postoperative data obtained from both groups were compared. No statistically meaningful differences were found related to variables of mean age, stone size, access number, serum creatinine change, operative time, renal parenchyma thickness, VAS scores, and hospitalization period. Whereas the nephroscope time (minutes) was longer in the ABS group (Group 1 [G1]:3, 33±1, 72 vs G2:2, 62±1, 43, P=0.035), hemoglobin (Hb) decrease, and urine clarity time were statistically lower compared with the control group. Hb decrease was (mg/dL) (G1: 1.40±1.04 vs G2: 1.84±1.15, P=0.034), and urine clarity time was (hour) (G1: 9.60±5.50 vs G2: 11.95±4.71, P=0.012), respectively. Complications were encountered in three (6.6%) patients of the ABS group and in four (8.8%) of the control group. CONCLUSION ABS is an efficient and reliable hemostatic agent in tubeless PCNL. Comparative studies are needed, however, with other hemostatic agents that might be applied in tubeless PCNL.


International Urology and Nephrology | 2009

Penis replantation after self-mutilation

Ahmet Ozturk; Mehmet Kilinc; Selcuk Guven; Niyazi Gormus; Metin Belviranli; Mehmet Kaynar; Mehmet Arslan

In this case report, the procedure of penis replanting and its complications after genital self-mutilation in a male adult are explained.


Korean Journal of Urology | 2014

Testicular adrenal rest tumor in 11-Beta-hydroxylase deficiency driven congenital adrenal hyperplasia.

Mehmet Kaynar; Mehmet Giray Sönmez; Yaşar Ünlü; Tuna Karatağ; Erdem Tekinarslan; Alpay Sümer

Testicular adrenal rest tumors (TART) occur often as asymptomatic nodules in corticotropin-dependent lesions aberrant adrenal tissue in congenital adrenal hyperplasia (CAH) patients. The present manuscript is about an unusual case of a 16-year-old CAH patient due to 11β-hydroxylase deficiency. He underwent testicle biopsy because of testicle tumor suspicion and diagnosed with TART.


Central European Journal of Urology 1\/2010 | 2015

Effective radiation exposure evaluation during a one year follow-up of urolithiasis patients after extracorporeal shock wave lithotripsy.

Mehmet Kaynar; Erdem Tekinarslan; Suat Keskin; Ibrahim Buldu; Mehmet Giray Sönmez; Tuna Karatag; Mustafa Okan Istanbulluoglu

Introduction To determine and evaluate the effective radiation exposure during a one year follow-up of urolithiasis patients following the SWL (extracorporeal shock wave lithotripsy) treatment. Material and methods Total Effective Radiation Exposure (ERE) doses for each of the 129 patients: 44 kidney stone patients, 41 ureter stone patients, and 44 multiple stone location patients were calculated by adding up the radiation doses of each ionizing radiation session including images (IVU, KUB, CT) throughout a one year follow-up period following the SWL. Results Total mean ERE values for the kidney stone group was calculated as 15, 91 mSv (5.10-27.60), for the ureter group as 13.32 mSv (5.10-24.70), and in the multiple stone location group as 27.02 mSv (9.41-54.85). There was no statistically significant differences between the kidney and ureter groups in terms of the ERE dose values (p = 0.221) (p >0.05). In the comparison of the kidney and ureter stone groups with the multiple stone location group; however, there was a statistically significant difference (p = 0.000) (p <0.05). Conclusions ERE doses should be a factor to be considered right at the initiation of any diagnostic and/or therapeutic procedure. Especially in the case of multiple stone locations, due to the high exposure to ionized radiation, different imaging modalities with low dose and/or totally without a dose should be employed in the diagnosis, treatment, and follow-up bearing the aim to optimize diagnosis while minimizing the radiation dose as much as possible.


Case reports in urology | 2015

Epinephrine Injection Associated Scrotal Skin Necrosis

Murat Gul; Mehmet Kaynar; Tamer Sekmenli; Ilhan Ciftci; Serdar Goktas

Male circumcision is among the most frequent surgical interventions throughout history. Although considered as a minor intervention, it may have complications ranging from insignificant to catastrophic. These complications can be attributed to the surgical procedure and anesthesia. In this report we present two cases of scrotal skin necrosis after lidocaine with epinephrine injection using subcutaneous ring block technique prior to circumcision.

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