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https://www.readbyqxmd.com/read/28734818/preoperative-aqueous-cytokine-levels-are-associated-with-a-rapid-reduction-in-endothelial-cells-after-penetrating-keratoplasty
#1
Yukari Yagi-Yaguchi, Takefumi Yamaguchi, Kazunari Higa, Terumasa Suzuki, Hiroyuki Yazu, Naohiko Aketa, Yoshiyuki Satake, Kazuo Tsubota, Jun Shimazaki
PURPOSE: To evaluate the influence of preoperative inflammatory cytokine levels in the aqueous humor (AqH) on the endothelial cell density (ECD) after penetrating keratoplasty (PKP). DESIGN: Prospective interventional, consecutive case series. METHODS: This study includes 70 consecutive patients (mean age 73.7 ± 10.6), who underwent PKP (37 eyes) or cataract surgery (controls, 33 eyes). A total of 70 AqH samples were collected at the beginning of each surgery...
July 19, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724812/use-of-glycerol-preserved-corneas-for-corneal-transplants
#2
Neeti Gupta, Prerna Upadhyay
PURPOSE: This study was carried out to see the results of glycerol-preserved cornea (GPC) in emergency situation when fresh corneal tissue was not available. The aim was to study the outcome of corneal transplantation using GPC. METHODS: This was a retrospective study. The medical records of all the patients were reviewed, who underwent keratoplasty using "GPC" during the period from October 2011 to December 2015. The indication of keratoplasty, duration of preservation of the GPC, and its outcome were analyzed...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28672969/comparative-study-on-the-biomechanics-between-improved-pvp-and-traditional-pkp-in-the-treatment-of-vertebral-peripheral-wall-damage-type-ovcf
#3
Tao Zhou, Hao Lin, Hongliang Wang, Xiaoqiang Chen, Fang He
We compared the biomechanics between improved percutaneous vertebroplasty (improved PVP) and traditional percutaneous kyphoplasty (PKP) in the treatment of vertebral peripheral wall damage-type osteoporotic vertebral compression fracture (OVCF). A total of 15 vertebral peripheral wall damage-type OVCF models of new calves (12-14 weeks) were treated with a decalcifying agent (Shandon TBD-1) with the vertebral compression fracture. The vertebral volume and anterior height before modeling, and the vertebral BMD before and after modeling were measured...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28647158/a-systematic-review-of-unilateral-versus-bilateral-percutaneous-vertebroplasty-percutaneous-kyphoplasty-for-osteoporotic-vertebral-compression-fractures
#4
Shengping Yang, Changxian Chen, Hanlong Wang, Zhiqiang Wu, Lianqun Liu
OBJECTIVE: The aim of this study was to compare the unilateral and bilateral approaches in treating osteoporotic vertebral compression fractures. METHODS: Based on the principles and methods of the Cochrane systematic reviews, the records of the Cochrane Library, PubMed, Web of Science, Chinese Bio-medicine database, China Journal Full-text Database, VIP database, and Wanfang database were reviewed until October 2014. The randomized controlled trials on unilateral and bilateral approaches to percutaneous vertebroplasty (PVP)/percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fractures were included...
June 21, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28646864/femtosecond-laser-assisted-cataract-surgery-after-penetrating-keratoplasty-a-case-report
#5
Danmin Cao, Shiming Wang, Yong Wang
BACKGROUND: Cataract surgery after penetratingkeratoplasty (PKP) is often challenging due to changes in the integrity of the cornea caused by PKP. For example, corneal endothelial cell (CEC) loss and corneal edema commonly occur after traditional phacoemulsification cataract surgery in patients that previously had successful PKP. Recent studies have reported that femtosecond laser-assisted cataract surgery (FLACS) significantly reduces the need for ultrasound energy minimizing mechanical damage to the cornea and results in a reduction of CEC loss and corneal edema...
June 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28640112/cement-leakage-in-osteoporotic-vertebral-compression-fractures-with-cortical-defect-using-high-viscosity-bone-cement-during-unilateral-percutaneous-kyphoplasty-surgery
#6
Tie Liu, Zhe Li, Qingjun Su, Yong Hai
The purpose of this study was to investigate cement leakage (CL) in osteoporotic vertebral compression fractures (OVCFs) with cortical defect using high-viscosity bone cement during unilateral percutaneous kyphoplasty (PKP) surgery.This study included a series of 77 patients (23 males, 54 females) with single level osteoporotic vertebral body fracture (OVCF) who underwent unilateral PKP in our hospital. Preoperative x-ray, computed tomography (CT) scan, and 3-dimensional reconstructions were studied. During the PKP procedure, needle was carefully put to avoid too near to the cortical defect according to CT image...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28616744/demonstration-that-a-klebsiella-pneumoniae-subsp-pneumoniae-isolated-from-an-insect-nezara-viridula-harbors-a-plasmid-borne-type-iv-secretion-system
#7
Enrique Gino Medrano, Alois A Bell
Previously, we reported the isolation of Klebsiella pneumoniae subspecies pneumoniae strain Kp 5-1 from a southern green stink bug (Nezara viridula) that is a significant pest of numerous economically important crops. We subsequently sequenced the strains whole genome. Here, we report the presence of a functional plasmid-borne type IV secretion (TFSS) system that was identified using genomic mining of the annotated genome. Comparison of the Kp 5-1 resident 186 kb plasmid (pKp 5-1) with nine other Klebsiella with plasmids of comparable size from clinical and environmental strains revealed putative TFSS with identities ranging from 70 to 99%...
June 15, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28607331/a-retrospective-study-of-percutaneous-balloon-kyphoplasty-for-the-treatment-of-symptomatic-schmorl-s-nodes-5-year-results
#8
Sun Zhi-Yong, Zhao Huan, Ling Feng, Lv Nan-Ning, Zhu Xiao-Yu, Pi Bin, Lin Jun, Qian Zhong-Lai, Zhang Zhi-Ming, Yang Hui-Lin
BACKGROUND Despite literature supporting the efficiency of percutaneous balloon kyphoplasty (PKP) in treating osteoporotic and malignant vertebral compression fractures, few reports exist that document its use for treatment of symptomatic Schmorl's nodes (SNs) refractory to conservative treatment. Patients with symptomatic SNs could have pain in the vertebrae similar to an acute vertebral compression fracture. MRI is very helpful in diagnosing symptomatic SNs when x-ray and CT scan are unremarkable. In painful cases, the vertebrae bone marrow around the SNs is hyperintense on T2-weighted subsequence...
June 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28566777/surgical-treatment-of-secondary-fractures-after-percutaneous-vertebroplasty-a-retrospective-study
#9
Jiang-Jun Zhu, Dong-Sheng Zhang, Su-Liang Lou, Yong-Hong Yang
BACKGROUND: Percutaneous vertebroplasty (PVP) and percutaneous kyphoplasty (PKP) are effective procedures for the treatment of vertebral compression fractures (VCFs). However, recent studies have reported that secondary VCFs develop in patients after PVP or PKP treatment. This study aimed to investigate the clinical characteristics and management of secondary fractures after PVP or PKP. MATERIALS AND METHODS: 599 cases who had vertebral compression fracture and underwent PVP or PKP between September 2008 and June 2014 were enrolled, including 121 males and 478 females...
May 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28534231/comparison-of-outcomes-and-complications-of-deep-anterior-lamellar-keratoplasty-and-penetrating-keratoplasty-performed-in-a-large-group-of-patients-with-keratoconus
#10
Ashbala Khattak, Fouad R Nakhli, Khaled M Al-Arfaj, Abdullah A Cheema
PURPOSE: To compare visual acuity, refraction, topography, and complications of deep anterior lamellar keratoplasty (DALK) and penetrating keratoplasty (PKP) performed in patients with keratoconus (KCN). METHODS: In this retrospective interventional non-randomized clinical study, patients with moderate to severe KCN that underwent either PKP or DALK for optical corrections were enrolled. The final outcome analysis was performed after complete suture removal for both groups of patients...
May 22, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28505034/pediatric-corneal-transplants
#11
Danielle Trief, Maria C Marquezan, Christopher J Rapuano, Christina R Prescott
PURPOSE OF REVIEW: Pediatric keratoplasty poses unique challenges in clinical and surgical management. However, successful transplantation can afford a child vision in an otherwise poorly seeing eye. This review will provide an update on recent advances in pediatric keratoplasty. RECENT FINDINGS: Although children who receive corneal transplants remain at increased risk of rejection, infection, and graft dehiscence compared with adult corneal transplant recipients, new surgical techniques, and advances in clinical management have led to better outcomes...
May 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28503733/long-term-safety-from-transmission-of-porcine-endogenous-retrovirus-after-pig-to-non-human-primate-corneal-transplantation
#12
Hyuk Jin Choi, Jiyeon Kim, Jae Young Kim, Hyun Ju Lee, Won Ryang Wee, Mee Kum Kim, Eung Soo Hwang
BACKGROUND: The risk of xenozoonosis mainly by porcine endogenous retrovirus (PERV) has been considered as one of the main hurdles in xenotransplantation and therefore should be elucidated prior to the clinical use of porcine corneal grafts. Accordingly, an investigation was performed to analyze the infectivity of PERVs from porcine keratocytes to human cells, and the long-term risk of transmission of PERVs was determined using pig-to-non-human primate (NHP) corneal transplantation models...
May 14, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28458708/femtosecond-laser-arcuate-keratotomy-for-the-correction-of-postkeratoplasty-high-astigmatism-in-keratoconus
#13
Mohammad Naser Hashemian, Habib Ojaghi, Mehrdad Mohammadpour, Mahmoud Jabbarvand, Firouzeh Rahimi, Mohammad-Ali Abtahi, Mehdi Mazloumi, Seyed-Hossein Abtahi
BACKGROUND: Astigmatism is the leading complication in visual recovery after penetrating keratoplasty (PKP) and deep anterior lamellar keratoplasty (DALK); in this study, we evaluated the outcome of femtosecond laser arcuate keratotomy (FLAK) after DALK and PKP in Iranian keratoconic patients. MATERIALS AND METHODS: In this prospective interventional case series, refractive and keratometric predictability, efficacy, and complications of FLAK for postkeratoplasty astigmatism in keratoconus were evaluated; 23 eyes of 23 consecutive patients (mean age of 32...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28457614/corneal-collagen-cross-linking-in-the-management-of-keratoconus-in-canada-a-cost-effectiveness-analysis
#14
Victoria C Leung, Petros Pechlivanoglou, Hall F Chew, Wendy Hatch
PURPOSE: To use patient-level microsimulation models to evaluate the comparative cost-effectiveness of early corneal cross-linking (CXL) and conventional management with penetrating keratoplasty (PKP) when indicated in managing keratoconus in Canada. DESIGN: Cost-utility analysis using individual-based, state-transition microsimulation models. PARTICIPANTS: Simulated cohorts of 100 000 individuals with keratoconus who entered each treatment arm at 25 years of age...
August 2017: Ophthalmology
https://www.readbyqxmd.com/read/28412805/-the-observation-of-tacrolimus-eye-drops-preventing-the-early-immunological-rejection-after-penetrating-keratoplasty-for-fungal-keratitis
#15
D M Xiang, Y X Wang, Y N Jia, S X Li, H L Zhai, W Y Shi, H Gao
Objective: To observe the early immunological rejection prevention effect of tacrolimus eye drops combined with glucocorticoids on fungal keratitis patients who received penetrating keratoplasty (PKP). Methods: In a retrospective case series study, medical records of fungal keratitis patients who received PKP in Shandong Eye Institute from March 2013 to December 2015 were reviewed. Twenty-six patients (26 eyes) were given tacrolimus eye drops, and 24 patients (24 eyes) were given 1% cyclosporine A eye drops immediately after PKP...
April 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28410708/twenty-nine-gauge-dual-chandelier-retroillumination-for-the-non-open-sky-continuous-curvilinear-capsulorhexis-in-the-penetrating-keratoplasty-triple-procedure
#16
Shunji Yokokura, Takehiro Hariya, Wataru Kobayashi, Yasuhiko Meguro, Kohji Nishida, Toru Nakazawa
We describe a technique for the penetrating keratoplasty (PKP) triple procedure that uses 29-gauge dual-chandelier illumination during creation of a non-open-sky continuous curvilinear capsulorhexis (CCC). The chandeliers are inserted through the pars plana into the vitreous cavity through the bulbar conjunctiva at the 3 o'clock and 9 o'clock positions. We compared this approach with that of a core vitrectomy, in which a single 25-gauge port is inserted into the vitreous cavity transconjunctivally through the upper temporal pars plana...
March 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28405478/comparison-of-outcomes-in-patients-who-underwent-deep-anterior-lamellar-keratoplasty-and-those-converted-to-penetrating-keratoplasty
#17
Yusuf Koçluk, Emine Alyamaç Sukgen, Ayşe Burcu
OBJECTIVES: To compare clinical outcomes of cases who underwent deep anterior lamellar keratoplasty (DALK) and cases who were converted to penetrating keratoplasty (PKP) from DALK surgery. MATERIALS AND METHODS: The records of 54 patients for whom DALK surgery was planned and were operated for different diagnoses between March 2013 and June 2015 were retrospectively analyzed. Patients were divided into two groups: group 1 (PKP group) consisted of 23 cases who were converted to PKP due to Descemet's membrane perforation at any stage of surgery; group 2 (DALK group) consisted of 31 patients whose surgery could be completed as DALK...
April 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28393027/weighing-of-risk-factors-for-penetrating-keratoplasty-graft-failure-application-of-risk-score-system
#18
Abdo Karim Tourkmani, Valeria Sánchez-Huerta, Guillermo De Wit, Jaime D Martínez, David Mingo, Ignacio Mahillo-Fernández, Ignacio Jiménez-Alfaro
AIM: To analyze the relationship between the score obtained in the Risk Score System (RSS) proposed by Hicks et al with penetrating keratoplasty (PKP) graft failure at 1y postoperatively and among each factor in the RSS with the risk of PKP graft failure using univariate and multivariate analysis. METHODS: The retrospective cohort study had 152 PKPs from 152 patients. Eighteen cases were excluded from our study due to primary failure (10 cases), incomplete medical notes (5 cases) and follow-up less than 1y (3 cases)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28386056/percutaneous-balloon-kyphoplasty-in-treatment-of-painful-osteoporotic-occult-vertebral-fracture-a-retrospective-study-of-89-cases
#19
Zhi-Yong Sun, Xue-Feng Li, Huan Zhao, Jun Lin, Zhong-Lai Qian, Zhi-Ming Zhang, Hui-Lin Yang
BACKGROUND The definition of a vertebral fracture is usually based on the presence of a deformation of the vertebral body and this can be misleading in the presence of a fracture without radiologic collapse with the definition of occult osteoporotic vertebral fractures (OOVFs). STIR sequence of MRI images showing hyperintensity signal was the most confirmative screening examination used to determine the presence of painful OOVFs. To date, clinical management of OOVFs has been rarely discussed. MATERIAL AND METHODS Between 2011 and 2013, 89 patients suffering from painful OOVFs underwent 142 percutaneous balloon kyphoplasty (PKP) procedures...
April 7, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28368993/penetrating-keratoplasty-at-a-tertiary-referral-center-in-ethiopia-indications-and-outcomes
#20
Menen Ayalew, Yonas Tilahun, Doug Holsclaw, Maanasa Indaram, Nicole E Stoller, Jeremy D Keenan, Jennifer Rose-Nussbaumer
PURPOSE: To describe the indications, visual acuity outcomes, and graft survival after penetrating keratoplasty (PKP) in Addis Ababa, Ethiopia. METHODS: The medical records of patients who underwent PKP at Menelik II Hospital between September 2000 and September 2013 were retrospectively reviewed. The prespecified outcomes were graft survival, visual acuity, and complication rates. RESULTS: A total of 321 patients underwent PKP during the study period and were included in the analysis...
June 2017: Cornea
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