Publications by authors named "Rohit Thomas"

Objective: This study aimed to assess the knowledge of monkeypox infection among dental hygiene professionals and students in Saudi Arabia.

Methods: A cross-sectional study was conducted among a convenience sample of dental hygiene professionals (n = 259). The questionnaire was developed based on previous literature, and descriptive analysis and a Chi-square test were performed.

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Objectives: Multiple studies show orthopedic health problems for medical staff due to wearing radiation protection aprons. The aim of this study was to evaluate the weight pressure on the shoulder as a marker of physical strain caused by different radiation-protection devices.

Methods: For the weight pressure measurement, a pressure sensor (OMD-30-SE-100N, OptoForce, Budapest, Hungary) placed on the left and right shoulder was used.

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Purpose: To evaluate the potential benefits of digital variance angiography (DVA) in selective lower limb angiography and to compare the performance of 2 DVA algorithms (conventional DVA1 and the recently developed DVA2) to that of digital subtraction angiography (DSA).

Materials And Methods: From November 2019 to May 2020, 112 iodinated contrast media (ICM) and 40 carbon dioxide (CO) angiograms were collected from 15 and 13 peripheral artery disease patients, respectively. The DVA files were retrospectively generated from the same unsubtracted source file as DSA.

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The maximum annual radiation ocular dose limit for medical staff has been reduced to 20 mSv in the current European directive 2013/59/Euratom. This multi-centric study aims at reporting the protected and unprotected eye lens doses in different fluoroscopically guided interventions and to evaluate any other factors that could influence the ocular dose. From July 2018 to July 2019, ocular radiation doses of six interventionists of four departments during complex interventions were recorded with a thermoluminescent dosimeter in front of and behind radiation protection glasses to measure the protected and unprotected doses.

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Carbon dioxide (CO2) gas is an established alternative to iodine contrast during angiography in patients with risk of postcontrast acute kidney injury and in those with history of iodine contrast allergy. Different CO2 delivery systems during angiography are reported in literature, with automated delivery system being the latest. The aim of this study is to evaluate the safety, efficacy, and learning curve of an automated CO2 injection system with controlled pressures in peripheral arterial interventions and also to study the patients' tolerance to the system.

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Foci of splenic tissue separated from the spleen can occur as a congenital anomaly. Isolated nodules of splenic tissue are called accessory spleens or spleniculli. However, nodules of splenic tissue can merge with other organs during embryonic development, in which case we speak of spleno-visceral fusions: most often, they merge with the tail of the pancreas (thus forming spleno-pancreatic fusion or an intrapancreatic accessory spleen), with the reproductive gland (i.

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Twenty-five years ago, optimal medical management was the mainstay of treatment in acute type B aortic dissection (TBAD) and intramural haematoma (IMH), with surgery being reserved for cases with rupture or critical branch vessel ischaemia. Less invasive endoluminal management of TBAD and IMH has developed rapidly over the past two and a half decades, thus changing the treatment algorithm in these patients. Today the focus has shifted to primary management with a combination of endoluminal intervention and optimal medical treatment.

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Introduction: People with aortic/prosthetic valve endocarditis are a high-risk cohort of patients who present a challenge for all medically involved disciplines and who can be treated by various surgical techniques.

Methods: We analyzed the results of treatment of root endocarditis with Medtronic Freestyle® in full-root technique over 19 years (1999-2018) and compared them against treatment with other tissue valves. Comparison was made with propensity score matching, using the nearest neighbor method.

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Aims: The coverage / occlusion of internal iliac artery (IIA) during endovascular treatment of aorto-iliac aneurysms (AIA) can be associated with risk of ischemic complications. To reduce these complications, unilateral or bilateral iliac branch device implantation (IBDI) has been reported. This study aims at evaluating the efficacy of simultaneous unilateral IBDI in the treatment of AIAs and comparing our results with literature.

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Aim: The aim of this retrospective study was to analyse the preoperative ultrasound findings in patients with minimal or almost no morphological changes of axillary lymph nodes (LN) and to correlate these findings with the results of sentinel node (SN) biopsy.

Materials And Methods: Between January 2014 and September 2018, 289 female patients with newly diagnosed breast cancer and negative preoperative axillary staging were examined with preoperative ultrasound evaluation of axillary LNs. Patients with no evidence of LN metastases underwent primary surgical treatment with SN biopsy.

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Our aim was to analyse the hospital outcome for the worldwide largest series of stentless bioroot xenografts (Medtronic Freestyle) as full root replacement in a single centre over a period of 18 years. Retrospective data analysis was performed for the entire cohort of patients undergoing aortic root surgery with the Medtronic Freestyle valve prosthesis. Logistic regression analysis was performed to analyse predictors of in-hospital mortality.

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Background:  The increasing number of minimally invasive fluoroscopy-guided interventions is likely to result in higher radiation exposure for interventional radiologists and medical staff. Not only the number of procedures but also the complexity of these procedures and therefore the exposure time as well are growing. There are various radiation protection means for protecting medical staff against scatter radiation.

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Background: Surgical management of aortic arch diseases is one of the most challenging issues in cardiovascular surgery. The aim of this study was to compare the outcome after frozen elephant trunk (FET) with conventional elephant trunk (ET) technique.

Methods: Out of a total of 551 patients after thoracic aortic surgery, we analyzed 70 consecutive patients, who underwent aortic arch replacement with ET or FET technique between 2001 and 2017 in our institution.

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We describe here an ultrafast method for electrophoresing proteins on SDS-PAGE. Previously we reported a method to complete SDS-PAGE and immunoblotting in an hour, including electrophoresing proteins at 70°C in 10 min. Here we show that we can electrophorese molecular weight standards and bovine serum albumin on a 4-20% gradient gel in well under 10 min using heated (44 °C) Laemmli running buffer and high voltage.

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Internal iliac artery aneurysms (IIAAs), although rare, are associated with a significant risk of mortality, if they rupture. Endovascular approach with exclusion of the aneurysm sac from antegrade and retrograde perfusion is proved to be a feasible treatment option. However, this option is not always technically possible with a preexisting endovascular aneurysm repair (EVAR) or surgical aortoiliac reconstruction with ligation of internal iliac artery origin.

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Curcumin, the principal curcuminoid in the food spice turmeric, is insoluble in water at room temperature. We have previously solubilized curcumin in water with the application of heat (100 °C) and found that this solubilized curcumin could be used as a gel protein stain. However, heat solubilization in water solubilized only a small fraction of the curcuminoid (1.

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Purpose: To evaluate the efficacy of endovascular repair of non-traumatic rupture of the descending thoracic aorta.

Materials And Methods: From January 2011 to August 2017, 22 consecutive patients (16 men, mean age 73.7 years, range 63-92 years) with non-traumatic rupture of the descending thoracic aorta were treated endovascularly.

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Background: Type A Dissection in pregnancy is a devastating medical condition with 2 lives at stake and unclear strategy at early gestational stages. We describe a successful outcome, clearly dependent on the coordination of all involved disciplines.

Case Presentation: This case history describes a 28 year old female with a 24th week pregnancy gravida 2 para 0 with a DeBakey Type I aortic dissection, diagnosed via ultrasound.

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Purpose: The annual permissible radiation ocular lens dose has been reduced to 20 millisieverts (mSv) in the current European directive 2013/59/Euratom. The aim of this study was to evaluate the personal radiation dose for vascular interventions with special focus on ocular lens dose.

Materials And Methods: From May 2016 to October 2016, the personal radiation doses of two interventionists and four technicians were prospectively recorded during 206 vascular interventions.

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 To evaluate the safety of percutaneous endovascular aortic repair and the relationship of access site characteristics to complications  All patients undergoing percutaneous TEVAR, EVAR and FEVAR procedures from January 2010 to May 2016 were retrospectively analysed for incidence of complications and their relationship to various access site characteristics like access artery size, degree of vessel calcification, skin to artery distance and sheath to artery ratio. Hemostasis occurring within 15 min after suture closure with or without manual compression was defined as primary hemostasis.  92 patients with 142 femoral access sites were included in the study.

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Acute aortic pathologies include acute aortic syndrome (aortic dissection, intramural hematoma, penetrating aortic ulcer), impending rupture, aortic aneurysm rupture and aortic trauma. Acute aortic syndrome, aortic aneurysm rupture and aortic trauma are life-threatening conditions requiring prompt diagnosis and treatment. The basic imaging modality for "acute aorta" is CT angiography with typical findings for these aortic pathologies.

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Background/aims: To assess the biliary manometric perfusion test (BMPT) for evaluating success in treating benign biliary strictures.

Methodology: During 2003 to 2010, 29 patients were subjected to BMPT after percutaneous balloon dilatation treatment. Intrabiliary pressure less than 20cm of water was considered the success threshold.

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Aim: Prolonged temporary implantation of retrievable vena cava filter is little discussed in literature. The aim of our article is to present our experience with a new type of retrievable "Recovery IVC Filter" with prolonged period of placement in the inferior vena cava (IVC).

Materials And Methods: "Recovery IVC Filter" was implanted in another department for a 27 year old patient with congenital deficiency of anti thrombin III with deep vein thrombosis (DVT) complicated by pulmonary embolism (PE).

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Background: The success of balloon dilatation treatment of benign biliary strictures (BBS) is usually evaluated by 'clinical test'. For objective evaluation of treatment success, measurement of the pressure inside the biliary tree after treatment has been proposed.

Aim: The aim of this article is to assess the role of biliary manometric perfusion test (BMPT) in the evaluation of treatment success of BBS and to assess the long term biliary patency after evaluation by BMPT.

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Background: Benign biliary strictures treated radiologically by percutaneous dilatation treatment are usually evaluated by 'clinical test'. For objective evaluation of treatment success, measurement of the pressure inside the biliary tree has been proposed.

Aim: The aim of this article is to report our experience with the measurement of the pressure in the biliary tree after treatment, to present the biliary manometric perfusion test (BMPT) as an alternative method of treatment evaluation and to demonstrate why the perfusion test is a better method of evaluation.

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