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Article ; Online: Evaluation of pollution levels in sediments from Lake Edku, Egypt using laser ablation inductively coupled plasma mass spectrometry.

Shaheen, Mohamed E / Gagnon, Joel E / Barrette, J C / Keshta, Amr E

2024 Volume 202, Page(s) 116387

Abstract: The concentrations of 11 heavy metals in sediments from Lake Edku, Egypt were determined using LA-ICP-MS. The average concentrations of elements occurred in the order of Fe > V > Cr > Zn > Ni > Cu > Co > Pb > As > Sn > Mo with respective values of 4.67 %, ...

Abstract	The concentrations of 11 heavy metals in sediments from Lake Edku, Egypt were determined using LA-ICP-MS. The average concentrations of elements occurred in the order of Fe > V > Cr > Zn > Ni > Cu > Co > Pb > As > Sn > Mo with respective values of 4.67 %, 104.8, 77.9, 76.6, 59.2, 52, 27.8, 19.8, 4.14, 2.24, and 1.45 μg/g. Several pollution indices were used to evaluate individual and cumulative contamination levels. All HMs were found to be in the deficiency to minimal enrichment range based on the enrichment factor. The contamination factor indicated low contamination levels of Cr and As, low to moderate contamination levels of Fe, Ni, Zn, Mo, Sn, and Pb, and moderate contamination levels of Co and Cu. The pollution load index and contamination degree indicated the sediments to be polluted and moderately polluted, respectively.
Language	English
Publishing date	2024-04-24
Publishing country	England
Document type	Journal Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2024.116387
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Article ; Online: The effect of augmented reality on preoperative anxiety in children and adolescents: A randomized controlled trial.

Chamberland, Cindy / Bransi, Myriam / Boivin, Ariane / Jacques, Sandra / Gagnon, Joël / Tremblay, Sébastien

Paediatric anaesthesia

2023 Volume 34, Issue 2, Page(s) 153–159

Abstract: Background and aims: Virtual reality has been shown to be an effective non-pharmacological intervention for reducing anxiety of pediatric patients. A newer immersive technology, that of augmented reality, offers some practical advantages over virtual ... ...

Abstract	Background and aims: Virtual reality has been shown to be an effective non-pharmacological intervention for reducing anxiety of pediatric patients. A newer immersive technology, that of augmented reality, offers some practical advantages over virtual reality, and also seems to show beneficial effects on anxiety. The main objective of this study was to determine whether augmented reality could reduce preoperative anxiety in pediatric patients undergoing elective day surgeries. A secondary outcome was to document the level of satisfaction from pediatric patients toward augmented reality intervention. Methods: Children and adolescents aged between 5 and 17 years old scheduled for elective day surgery under general anesthesia were randomly divided into two groups. Patients in the control group received standard care, whereas patients in the augmented reality group were accompanied by two virtual characters who taught them relaxation techniques and provided emotional and informational support. Anxiety was measured at the time of admission and at the time of induction using the short version of the modified Yale Preoperative Anxiety Scale. Results: The analysis included 37 pediatric patients in the augmented reality group and 64 in the control group. Anxiety scores were statistically significantly lower in the augmented reality group than those in the control group at the time of admission (median difference [95% CI]: 6.3 [0-10.4], p = .01), while no difference was observed between groups at the time of induction (median difference [95% CI]: -4.2 [-5.2-4.2], p = .58). Most patients in the augmented reality group wished to wear the glasses again and reported to be very satisfied with the intervention. Conclusion: To our knowledge, this study is the first large randomized controlled trial to provide empirical evidence of reduction in anxiety for children and adolescents using augmented reality prior to induction of general anesthesia.
MeSH term(s)	Child ; Humans ; Adolescent ; Infant, Newborn ; Augmented Reality ; Anxiety/prevention & control ; Anxiety/psychology ; Elective Surgical Procedures ; Anesthesia, General/methods ; Ambulatory Surgical Procedures
Language	English
Publishing date	2023-11-04
Publishing country	France
Document type	Randomized Controlled Trial ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1086049-6
ISSN	1460-9592 ; 1155-5645
ISSN (online)	1460-9592
ISSN	1155-5645
DOI	10.1111/pan.14793
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Zs.A 3306: Show issues

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Article ; Online: Assessment of contamination levels of heavy metals in the agricultural soils using ICP-OES

Shaheen, Mohamed E / Tawfik, Walid / Mankola, Asmaa F. / Gagnon, Joel E. / Fryer, Brian J. / El-Mekawy, Farouk M.

Soil and Sediment Contamination: An International Journal. 2023 Aug. 18, v. 32, no. 6 p.665-691

2023

Abstract: This work was carried out to monitor contamination levels of twelve heavy metals (HMs) in the agricultural soils of Kafr El-Zayat city in Egypt. The concentrations of Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Sr, and Pb were determined using inductively ... ...

Abstract	This work was carried out to monitor contamination levels of twelve heavy metals (HMs) in the agricultural soils of Kafr El-Zayat city in Egypt. The concentrations of Mg, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Sr, and Pb were determined using inductively coupled plasma optical emission spectroscopy (ICP-OES). Contamination levels were estimated based on various geochemical parameters such as contamination factor (CF), enrichment factor (EF), geo-accumulation index (Igₑₒ), degree of contamination (Cd), and pollution load index (PLI). The results showed that the majority of investigated soil samples were moderately contaminated (1 ≤ CF < 3) with V, Cr, Co, Cu, Zn, and Sr and had low contamination levels (CF <1) with Mg, Mn, Fe, Ni, and Pb. All investigated elements had geo-accumulation indices smaller than zero indicating uncontaminated soil samples except for V which showed (0 < Igₑₒ < 1) indicating uncontaminated to moderate pollution levels. All soil samples were found to have deficient to minimal enrichment for all investigated HMs based on the average values of EF (EF < 2). Cluster analysis (CA) and principal component analysis (PCA) revealed that HMs were clustered into three groups compromising As and V; Ni, Cr, Mn, Co, Fe, and Mn; and Pb, Cu, Sr, and Zn, which suggests the presence of different sources of pollution. The contribution of anthropogenic sources to V, Cr, Co, Cu, Zn, As, and Sr was estimated to be 45, 30, 26, 11, 23, 27, and 13% of the total metal content, respectively. In general, the investigated agricultural soil samples could be classified as moderately contaminated and polluted based on the Cd factor (Cd = 13.7), and the PLI (PLI = 1.1), respectively.
Keywords	agricultural soils ; cluster analysis ; pollution load ; principal component analysis ; sediment contamination ; spectroscopy ; Egypt ; Pollution ; soils ; ICP-OES ; heavy metals ; Kafr El-Zayat ; contamination levels
Language	English
Dates of publication	2023-0818
Size	p. 665-691.
Publishing place	Taylor & Francis
Document type	Article ; Online
ZDB-ID	2017739-2
ISSN	1549-7887 ; 1532-0383
ISSN (online)	1549-7887
ISSN	1532-0383
DOI	10.1080/15320383.2022.2123448
Database	NAL-Catalogue (AGRICOLA)

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Z 6090: Show issues

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Article ; Online: Evaluation of Aortic Zone 2 Proximal Landing Accuracy During Thoracic Endovascular Aortic Repair Following Carotid-Subclavian Revascularization.

Choi, Sally H J / Yang, Gary K / Baxter, Keith / Gagnon, Joel

Vascular and endovascular surgery

2021 Volume 55, Issue 4, Page(s) 355–360

Abstract: Background: Adequate seal for thoracic endovascular aortic repair (TEVAR) commonly requires landing in zone 2, but can prove to be challenging due to the tortuous and angulated anatomy of the region.: Objectives: Our objective was to determine the ... ...

Abstract	Background: Adequate seal for thoracic endovascular aortic repair (TEVAR) commonly requires landing in zone 2, but can prove to be challenging due to the tortuous and angulated anatomy of the region. Objectives: Our objective was to determine the proximal landing accuracy of zone 2-targeted TEVARs following carotid-subclavian revascularization (CSR) and its impact on clinical outcomes. Methods: Retrospective review of patients that underwent CSR for zone 2 endograft delivery at a tertiary institute between January 2008 and March 2018 was conducted. Technical outcomes were assessed by examining the incidence of intraoperative corrective maneuvers, 1a endoleaks and reinterventions. Distance to target and incidence of LSA stump filling were examined as radiographic markers of landing accuracy. Results: Zone 2-targeted TEVAR with CSR was performed in 53 patients for treatment of dissections (49%), aneurysms (30%) or trauma (21%). Nine (17%) cases required intraoperative corrective procedures: 5 (9%) proximal cuffs due to type 1a endoleak and 4 (8%) left common carotid artery (LCCA) stenting due to inadvertent coverage. Cases performed using higher resolution hybrid fluoroscopy machine compared to mobile C-arm were associated with increased proximal cuff use (OR 8.8; 95% CI 1.2-62.4). Average distance between the proximal edge of the covered graft to LCCA was 8 ± 1 mm and larger distances were not associated with higher rates of 1a endoleak. Twenty-eight (53%) cases of antegrade LSA stump filling were noted on follow-up imaging, but were not associated with higher rates of reinterventions (OR 0.8, 95% CI [0.2-4.6]). Three (6%) patients had a stroke within 30 days and 4 (8%) patients expired within 1 month. Intraoperative corrective maneuvers, post-operative 1a endoleak and reinterventions were not associated with higher rates of stroke or mortality. Conclusion: Using current endografts and imaging modalities, zone 2-targeted TEVARs have suboptimal technical accuracy.
MeSH term(s)	Aged ; Aneurysm, Dissecting/diagnostic imaging ; Aneurysm, Dissecting/mortality ; Aneurysm, Dissecting/physiopathology ; Aneurysm, Dissecting/surgery ; Aorta, Thoracic/diagnostic imaging ; Aorta, Thoracic/physiopathology ; Aorta, Thoracic/surgery ; Aortic Aneurysm, Thoracic/diagnostic imaging ; Aortic Aneurysm, Thoracic/mortality ; Aortic Aneurysm, Thoracic/physiopathology ; Aortic Aneurysm, Thoracic/surgery ; Blood Vessel Prosthesis ; Blood Vessel Prosthesis Implantation/adverse effects ; Blood Vessel Prosthesis Implantation/instrumentation ; Blood Vessel Prosthesis Implantation/mortality ; Carotid Arteries/diagnostic imaging ; Carotid Arteries/physiopathology ; Carotid Arteries/surgery ; Endoleak/etiology ; Endoleak/mortality ; Endoleak/therapy ; Endovascular Procedures/adverse effects ; Endovascular Procedures/instrumentation ; Endovascular Procedures/mortality ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Risk Assessment ; Risk Factors ; Stents ; Subclavian Artery/diagnostic imaging ; Subclavian Artery/physiopathology ; Subclavian Artery/surgery ; Time Factors ; Treatment Outcome
Language	English
Publishing date	2021-02-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	2076272-0
ISSN	1938-9116 ; 1538-5744
ISSN (online)	1938-9116
ISSN	1538-5744
DOI	10.1177/1538574421989851
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Zs.A 622: Show issues

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Article ; Online: Percutaneous closure of a post-surgical ascending aortic pseudoaneurysm with an amplatzer septal occluder device and steerable guiding sheath.

McClure, Graham R / Ratnayake, Geemitha / Chan, Albert / Gagnon, Joel

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions

2021 Volume 98, Issue 7, Page(s) E985–E989

Abstract: Thoracic pseudoaneurysm in the ascending aorta is an uncommon condition associated with significant risk of morbidity and mortality. Treatment is recommended in all cases regardless of symptoms as the mortality rate if left untreated has been documented ... ...

Abstract	Thoracic pseudoaneurysm in the ascending aorta is an uncommon condition associated with significant risk of morbidity and mortality. Treatment is recommended in all cases regardless of symptoms as the mortality rate if left untreated has been documented to be as high as 61%. The current standard of care for managing these lesions is open surgical repair. However, this is associated with significant morbidity. In-hospital mortality reported for patients undergoing surgical repair of an ascending aortic pseudoaneurysm ranges from 6.7% to 41%. When anatomically suitable, a less invasive approach using amplatzer vascular plug or septal occluder is an attractive approach. We present a case report of repair of a post-surgical ascending aortic false aneurysm using an amplatzer septal occluder with an Oscor ™ steerable guiding sheath; a novel approach to increase platform stability when engaging an aneurysm neck. Endovascular occluder deployment for closure of aortic false aneurysms remains a relatively novel technique. It is limited by the requirement to develop a stable endovascular platform to deliver the device and avoid system prolapse, particularly when accessing challenging lesions on the inner aortic curvature. We present the first case to utilize a steerable guiding sheath system to improve system stability and facilitate successful device delivery. Given the significant morbidity associated with open repair of these lesions we hope this will further expand the range of lesions viewed as appropriate for endovascular repair.
MeSH term(s)	Aneurysm, False/diagnostic imaging ; Aneurysm, False/etiology ; Aneurysm, False/surgery ; Aorta ; Aortic Aneurysm/diagnostic imaging ; Aortic Aneurysm/surgery ; Humans ; Septal Occluder Device ; Treatment Outcome
Language	English
Publishing date	2021-09-29
Publishing country	United States
Document type	Case Reports ; Journal Article
ZDB-ID	1459995-8
ISSN	1522-726X ; 1522-1946
ISSN (online)	1522-726X
ISSN	1522-1946
DOI	10.1002/ccd.29951
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Zs.A 1226: Show issues

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Article ; Online: Percutaneous proximal axillary artery versus femoral artery access for endovascular interventions.

Mordhorst, Alexa / Yan, Tyler D / Hoskins, Nathan / Gagnon, Joel / Kazemi, Kamyar

Journal of vascular surgery

2022 Volume 76, Issue 1, Page(s) 165–173

Abstract: Objective: The primary objective of this study is to describe and illustrate the technique of ultrasound-guided percutaneous proximal axillary artery (PAA) access, and secondarily to evaluate the versatility and safety of this approach in peripheral, ... ...

Abstract	Objective: The primary objective of this study is to describe and illustrate the technique of ultrasound-guided percutaneous proximal axillary artery (PAA) access, and secondarily to evaluate the versatility and safety of this approach in peripheral, visceral, and aortic endovascular interventions. Methods: This is a single-center retrospective review of all peripheral, visceral, and aortic endovascular cases using percutaneous PAA access from February 2019 to March 2021 compared with a sample of an equivalent number of consecutive cases completed via percutaneous common femoral artery (CFA) access during the same time period. Access entry success, minor and major access site complications within 30 days, major adverse events within 30 days, demographics, and procedural details were analyzed using standard statistical analyses. Results: A total of 115 accesses-59 PAA and 56 CFA-were reviewed during the study period. Group demographics were not significantly different. Access entry success was achieved in 58 (98.3%) and 56 (100%) of PAA and CFA accesses, respectively, with no statistically significant difference. There were no significant differences in minor access-site complications (13.6% vs 5.4%; P = .21) major access site complications (3.4% vs 7.1%; P = .43), or major adverse events (6.8% vs 5.4%). between the PAA and CFA groups. With respect to versatility, PAA cases had a significantly greater mean number of vessels intervened on per procedure compared with CFA access (2.59 ± 1.31 vs 1.95 ± 0.98; P < .01). A wide range of target vessels were intervened on in both groups. PAA cases had significantly more bilateral lower leg interventions (28.8% vs 12.5%; P = .04). PAA access had a significantly longer mean procedure time (103.2 minutes vs 58.63 minutes; P < .001) and fluoroscopy time (18.21 minutes vs 12.87 minutes; P = .02). Conclusions: The PAA is a feasible, versatile, and safe percutaneous access option for endovascular intervention. The in-line trajectory from this site facilitates visceral, renal, aortic, and bilateral lower extremity interventions with ease. Outcomes, complications, and major adverse events are similar to those of conventional CFA access in the short term.
MeSH term(s)	Axillary Artery/diagnostic imaging ; Catheterization, Peripheral/adverse effects ; Catheterization, Peripheral/methods ; Endovascular Procedures/adverse effects ; Endovascular Procedures/methods ; Femoral Artery/diagnostic imaging ; Humans ; Lower Extremity ; Retrospective Studies ; Risk Factors ; Treatment Outcome
Language	English
Publishing date	2022-03-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	605700-7
ISSN	1097-6809 ; 0741-5214
ISSN (online)	1097-6809
ISSN	0741-5214
DOI	10.1016/j.jvs.2022.03.031
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Zs.A 1933: Show issues

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Article ; Online: Evaluation of hydrophilic polymer embolization from endovascular sheath devices in an in vitro perfusion system.

Mordhorst, Alexa / Yang, Gary K / Reitsma, Nicholas / Chen, Jerry C / Zhang, Bei Yuan / Suri, Sahib / Gagnon, Joel

JVS-vascular science

2023 Volume 4, Page(s) 100127

Abstract: Objective: Case reports, tissue pathology, and autopsies have suggested that the hydrophilic polymer coating designed to improve endovascular deliverability and minimize vessel trauma can embolize and be associated with adverse outcomes such as ischemia, ...

Abstract	Objective: Case reports, tissue pathology, and autopsies have suggested that the hydrophilic polymer coating designed to improve endovascular deliverability and minimize vessel trauma can embolize and be associated with adverse outcomes such as ischemia, infarction, and death. This study sought to determine whether hydrophilic polymers shed off commercially available sheaths in a controlled in vitro environment, with the hypothesis that significant differences between coated and uncoated (control) sheaths would be found. Methods: Six sheaths from each manufacturer, including Zenith Alpha abdominal endovascular stent grafts (Cook Medical), DrySeal sheaths (W.L. Gore & Associates), and Sentrant Introducer sheaths (Medtronic), were tested in an in vitro environment. Noncoated Check-Flo performer introducer sheaths (Cook Medical) were used as controls. Each test circuit ran for 150 minutes at an output of 3 L/min, the circuit was then drained and the fluid collected. Quantitative analysis included weighing the dried filter paper and using particle size light scattering to quantify the particle size and count. Attenuated total reflectance spectroscopy was also used. Results: Each of the three coated sheaths had significantly greater shedding compared with the control sheaths. The Cook Zenith alpha sheath had significantly more residue weight (2.87 ± 0.52 mg/L) than the Gore DrySeal (1.07 ± 0.06 mg/L) and Medtronic Sentrant introducer (0.98 ± 0.14 mg/L) sheaths. The average particle size was not significantly different between the coated and uncoated (control) sheaths. Attenuated total reflectance spectroscopy identified sheath particulate in the Cook Zenith Alpha and Medtronic Sentrant samples. Conclusions: Polymer embolization was present and significantly greater in all three commercially available hydrophilic sheaths compared with the control group. Further investigation is needed into the clinical significance of these findings.
Language	English
Publishing date	2023-09-13
Publishing country	United States
Document type	Journal Article
ISSN	2666-3503
ISSN (online)	2666-3503
DOI	10.1016/j.jvssci.2023.100127
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Article: Dysphagia aortica secondary to thoracoabdominal aortic aneurysm resolved after endograft placement.

Choi, Sally H J / Yang, Gary K / Gagnon, Joel

Journal of vascular surgery cases and innovative techniques

2019 Volume 5, Issue 4, Page(s) 501–505

Abstract: Dysphagia aortica is a rare entity defined as difficulty in swallowing due to external compression by the aorta. Aneurysmal dysphagia aortica successfully treated with thoracic endovascular aortic repair (TEVAR) is exceedingly rare. We report the case of ...

Abstract	Dysphagia aortica is a rare entity defined as difficulty in swallowing due to external compression by the aorta. Aneurysmal dysphagia aortica successfully treated with thoracic endovascular aortic repair (TEVAR) is exceedingly rare. We report the case of a 74-year-old woman with known thoracoabdominal aneurysm who presented with acute shortness of breath and 3-month history of dysphagia. Computed tomography angiography revealed aneurysmal growth and massive esophageal dilation. She underwent TEVAR and visceral debranching, which led to complete symptom resolution correlated with sac regression. We also present a comprehensive review of the literature with a focus on cases of aneurysmal dysphagia aortica treated with TEVAR.
Language	English
Publishing date	2019-11-13
Publishing country	United States
Document type	Case Reports
ISSN	2468-4287
ISSN	2468-4287
DOI	10.1016/j.jvscit.2019.08.008
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Article ; Online: Deformation mechanics of self-expanding venous stents: Modelling and experiments.

Hejazi, Masoud / Sassani, Farrokh / Gagnon, Jöel / Hsiang, York / Phani, A Srikantha

Journal of biomechanics

2021 Volume 120, Page(s) 110333

Abstract: Deformation properties of venous stents based on braided design, chevron design, Z design, and diamond design are compared using in vitro experiments coupled with analytical and finite element modelling. Their suitability for deployment in different ... ...

Abstract	Deformation properties of venous stents based on braided design, chevron design, Z design, and diamond design are compared using in vitro experiments coupled with analytical and finite element modelling. Their suitability for deployment in different clinical contexts is assessed based on their deformation characteristics. Self-expanding stainless steel stents possess superior collapse resistance compared to Nitinol stents. Consequently, they may be more reliable to treat diseases like May-Thurner syndrome in which resistance against a concentrated (pinching) force applied on the stent is needed to prevent collapse. Braided design applies a larger radial pressure particularly for vessels of diameter smaller than 75% of its nominal diameter, making it suitable for a long lesion with high recoil. Z design has the least foreshortening, which aids in accurate deployment. Nitinol stents are more compliant than their stainless steel counterparts, which indicates their suitability in veins. The semi-analytical method presented can aid in rapid assessment of topology governed deformation characteristics of stents and their design optimization.
MeSH term(s)	Alloys ; Mechanical Phenomena ; Prosthesis Design ; Stainless Steel ; Stents
Chemical Substances	Alloys ; Stainless Steel (12597-68-1)
Language	English
Publishing date	2021-03-05
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	218076-5
ISSN	1873-2380 ; 0021-9290
ISSN (online)	1873-2380
ISSN	0021-9290
DOI	10.1016/j.jbiomech.2021.110333
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Zs.A 700: Show issues

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Article ; Online: Ultrasound-guided cyanoacrylate injection for the treatment of incompetent perforator veins.

Mordhorst, Alexa / Yang, Gary K / Chen, Jerry C / Lee, Shung / Gagnon, Joel

Phlebology

2021 Volume 36, Issue 9, Page(s) 752–760

Abstract: Objective: The use of cyanoacrylate products (CA) in incompetent perforator vein (IPV) treatment has not been thoroughly examined. The primary objective of this study is to describe the technique of ultra sound guided direct injection of IPV with CA, ... ...

Abstract	Objective: The use of cyanoacrylate products (CA) in incompetent perforator vein (IPV) treatment has not been thoroughly examined. The primary objective of this study is to describe the technique of ultra sound guided direct injection of IPV with CA, and secondarily to determine early closure rates and safety of this technique. Methods: A retrospective analysis of patients undergoing IPV injection at two centres between 2015-2018 was conducted. Demographics, CEAP classification and IPV location were collected. Outcomes were assessed at two follow-up appointments. Results: A total of 83 perforator vein injections were completed. CEAP classifications include C2 - C6 classes. Location of perforators were posteromedial (6%), femoral canal (9%), paratibial (14%), and posterior-tibial (71%). IPV closure rates were 96.3% at initial follow-up (16 ± 2 days). Closure rates decreased to 86.5% at second follow-up (72 ± 9 days). There were no deep vein thromboses during follow-up. One patient developed septic thrombophlebitis that was successfully managed with antibiotics. Conclusion: Ultrasound-guided CA glue injection is a simple and low risk procedure that effectively closes incompetent perforator veins.
MeSH term(s)	Cyanoacrylates ; Humans ; Retrospective Studies ; Sclerotherapy ; Ultrasonography, Interventional ; Venous Insufficiency
Chemical Substances	Cyanoacrylates
Language	English
Publishing date	2021-05-27
Publishing country	England
Document type	Journal Article
ZDB-ID	645172-x
ISSN	1758-1125 ; 0268-3555
ISSN (online)	1758-1125
ISSN	0268-3555
DOI	10.1177/02683555211015564
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