Browsing by Author "Alpaslan, M."

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Assessement of the Complications of Ultrasound and Fluoroscopy-Guided Placement of Totally Implantable Venous Access Ports
(Yuzuncu Yil Universitesi Tip Fakultesi, 2019) Özkaçmaz, S.; Alpaslan, M.; Dadalı, Y.; Yavuz, A.
Totally implantable venous access systems are widely used in oncology; however, their complications are extremely common which, sometimes, require device removal, thereby, leading to delayed chemotherapy and infusion therapies. In this study, we aimed to investigate the immediate, early, and late complications of venous port implantation in our oncology patients. A total of 219 consecutive cancer patients (111 males, 108 females; mean age: 56.9 years; range: 1 to 81 years) were retrospectively analyzed between January 2013 and June 2014. A total of 220 ultrasound-and fluoroscopy-guided totally implantable venous port systems were implanted through the right or left internal jugular vein access. The mean follow-up was 83.7 (range: 2 to 410) days. Overall complication rate was 8.6% (19/220). Eight devices in seven patients were removed due to complications. Two ports were removed in one patient. The complications which required port removal were compromised port-related bloodstream infection (n=5), central venous thrombosis (n=3), and catheter thrombosis (n=1). No major complication or no mortality associated with the port implantation was seen during follow-up. Totally seven immediate complications including local hematoma (n=2), catheter tip retraction (n=2), pain (n=1), catheter loop formation (n=1), catheter malposition (n=1), two early complications (n=2; 1 wound dehiscence, and 1 wound infection), and 10 late complications including catheter-related blood stream infection (n=5), central venous thrombosis (n=3), catheter thrombosis (n=1), and tunnel hematoma (n=1) occurred. Low incidence of complications suggest ultrasound-and fluoroscopy-guided venous port implantation is a safe and reliable method for long-term venous access © 2019, Yuzuncu Yil Universitesi Tip Fakultesi. All Rights Reserved.
The Role of the Virtual Touch Tissue Quantification Technique in Differentiating Between Benign Prostatic Hyperplasia and Prostatic Carcinoma
(Yuzuncu Yil Universitesi Tip Fakultesi, 2023) Akdemir, Z.; Yokuş, A.; Taken, K.; Alpaslan, M.; Arslan, H.; Akdeniz, H.
Virtual Touch Tissue Quantification (VTTQ) is a promising new implementation of the acoustic radiation force pulsed ultrasound technique that has gained popularity in recent years. The present study compares the performance of the VTTQ technique in distinguishing between prostate cancer (PCa) and benign prostatic hyperplasia (BPH). VTTQ was performed on 91 prostate nodular lesions in 72 patients with BPH and suspected PCa prior to a prostate histopathologic examination, while 35 healthy volunteers were included in the study as controls. The mean shear wave velocity (SWV) values of the central and peripheral prostate zone were measured in the healthy volunteers, with the SWV at each nodular lesion quantified through the implementation of an acoustic radiation force impulse (ARFI). The performance of VTTQ in discriminating between PCa and BPH was compared, and the diagnostic value of VTTQ for PCa was evaluated in terms of sensitivity, specificity and cut-off value. Histopathological examinations detected PCa in 21 of the 91 nodular lesions and BPH in 70. The SWV values (m/s) were significantly higher in prostate cancer than in the BPH and central-peripheral prostate zones (3.85±0.78, 2.29±1.03, 1.65 ±0.95, 1.14±0.56). The mean SWV values of the central-peripheral prostate zones were found to be significantly different from each other. We determined an SWV cut-off value of 3.09 m/s for differentiating between benign and malignant nodules, with a sensitivity and specificity of 90.5% and 80%, respectively. VTTQ can effectively determine the stiffness of prostate nodular lesions, with significantly higher performance discrimination between PCa and BPH. © 2023, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
Variations in Calcium, Phosphorus, Iron, Copper, Zinc and Manganese Contents of Wheat and Rice Varieties Under Salt Stress
(TUBITAK, 1998) Alpaslan, M.; Güneş, A.; Taban, S.; Erdal, I.; Tarakcioǧlu, C.
Variations in Ca, P, Fe, Cu, Zn and Mn contents of six wheat (Gerek, Bolal, Kiraç, Çakmak, Bezostaya and Kiziltan) and six rice varieties (Ribe, Tri-445, Serhat 92, Kros 424, Baldo and Rocca) under salt stress were investigated. Growth was inhibited by salinity. Salinity decreased P content of Kiziltan, while increased rice cultivars of Tri-445 and Kros 424. Iron contents of wheat cultivars of Gerek. Bolal and Kiraç and rice cultivars of Tri-445 and Rocca were decreased by salinity. In contrast to this, Iron contents of wheat cultivars of Çakmak and Bezostaya and rice cultivars of Ribe, Serhat 92, Kros 424 and Baldo were increased by salinity. In general, calcium, Cu, Zn and Mn contents of the plants were increased by salinity.