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  1. Article ; Online: Superior mesenteric arteriovenous fistula embolization with a vascular plug for upper gastrointestinal hemorrhage: a case report.

    Shinagawa, Austin / Billah, Zaeem / Kansagra, Kartik / Lam, Cuong / Vatakencherry, Geogy

    CVIR endovascular

    2022  Volume 5, Issue 1, Page(s) 35

    Abstract: Background: Superior mesenteric arteriovenous fistula is a rare vascular anomaly often presenting with sequelae of portal hypertension, heart failure, or mesenteric ischemia. This report describes a patient with a previously unidentified superior ... ...

    Abstract Background: Superior mesenteric arteriovenous fistula is a rare vascular anomaly often presenting with sequelae of portal hypertension, heart failure, or mesenteric ischemia. This report describes a patient with a previously unidentified superior mesenteric arteriovenous fistula who presented with variceal bleeding, thought to be the leading cause of mortality associated with this condition. Although this patient was initially referred for a transjugular intrahepatic portosystemic shunt procedure, following a thorough review of her clinical history and imaging, she instead underwent embolization of the arteriovenous fistula likely responsible for her symptoms.
    Case presentation: A 75-year-old woman with a past surgical history of extensive small bowel resection presented with active variceal bleeding requiring transfusions. She was referred to vascular and interventional radiology for transjugular intrahepatic portosystemic shunt procedure; however, her clinical presentation was inconsistent with cirrhosis. This prompted a further review of her imaging, which identified a superior mesenteric arteriovenous fistula as the probable etiology of her varices. This fistula was subsequently embolized with a vascular plug and follow-up upper endoscopy at 1-month demonstrated complete resolution of her varices.
    Conclusions: This report highlights a potential etiology of variceal bleeding in the acutely ill patient. Through a thorough consultation, the patient described here was able to avoid a procedure with the potential to cause catastrophic consequences, and instead receive the appropriate treatment for an uncommon condition.
    Level of evidence: Level 4, Case Report.
    Language English
    Publishing date 2022-07-22
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2520-8934
    ISSN (online) 2520-8934
    DOI 10.1186/s42155-022-00296-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Percutaneous access planning, techniques and considerations for endovascular aortic repair (EVAR).

    Vatakencherry, Geogy / Molloy, Chris / Sheth, Neil / Liao, Millie / Lam, Cuong Ken

    Cardiovascular diagnosis and therapy

    2018  Volume 8, Issue Suppl 1, Page(s) S184–S190

    Abstract: Percutaneous endovascular aortic repair (EVAR) has transformed the field of aortic repair. As techniques and devices improve, interventionalists continue to expand the boundaries of what is possible, enabling these life-saving procedures to be performed ... ...

    Abstract Percutaneous endovascular aortic repair (EVAR) has transformed the field of aortic repair. As techniques and devices improve, interventionalists continue to expand the boundaries of what is possible, enabling these life-saving procedures to be performed on a wider range of more technically challenging cases. This article discusses endovascular access considerations for EVAR including; ultrasound guidance, preclose technique, access vessel options, innovative devices, and bailout strategies that interventionalists should be familiar with to optimize patient outcomes.
    Language English
    Publishing date 2018-02-21
    Publishing country China (Republic : 1949- )
    Document type Journal Article ; Review
    ZDB-ID 2685043-6
    ISSN 2223-3660 ; 2223-3652
    ISSN (online) 2223-3660
    ISSN 2223-3652
    DOI 10.21037/cdt.2018.03.06
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Spinal cord protection with a cerebrospinal fluid drain in a patient undergoing thoracic endovascular aortic repair.

    Lam, Cuong H / Vatakencherry, Geogy

    Journal of vascular and interventional radiology : JVIR

    2010  Volume 21, Issue 9, Page(s) 1343–1346

    Abstract: Paralysis and paraparesis are dreaded complications of thoracic endovascular aortic repair (TEVAR) that occur with an incidence of 2%-6%. Risks factors include the type of thoracic aortic pathology treated, coverage of the left subclavian artery origin ... ...

    Abstract Paralysis and paraparesis are dreaded complications of thoracic endovascular aortic repair (TEVAR) that occur with an incidence of 2%-6%. Risks factors include the type of thoracic aortic pathology treated, coverage of the left subclavian artery origin without revascularization, concomitant infrarenal abdominal aortic aneurysm repair, extent of stent graft coverage of the thoracic aorta, and renal failure. Cerebral spinal fluid (CSF) drains have been advocated as one of several protective strategies to prevent spinal cord ischemia. This case discussion briefly addresses the evidence supporting the use of CSF drains in patients undergoing TEVAR and offers an algorithm for managing CSF drains.
    MeSH term(s) Aged, 80 and over ; Algorithms ; Aortic Aneurysm, Thoracic/diagnostic imaging ; Aortic Aneurysm, Thoracic/physiopathology ; Aortic Aneurysm, Thoracic/surgery ; Aortic Rupture/diagnostic imaging ; Aortic Rupture/physiopathology ; Aortic Rupture/surgery ; Aortography/methods ; Blood Vessel Prosthesis Implantation/adverse effects ; Cerebrospinal Fluid Shunts/adverse effects ; Drainage/methods ; Endovascular Procedures/adverse effects ; Hemodynamics ; Humans ; Male ; Paralysis/etiology ; Paralysis/prevention & control ; Paraparesis/etiology ; Paraparesis/prevention & control ; Spinal Cord Ischemia/etiology ; Spinal Cord Ischemia/physiopathology ; Spinal Cord Ischemia/prevention & control ; Tomography, X-Ray Computed ; Treatment Outcome
    Language English
    Publishing date 2010-09
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 1137756-2
    ISSN 1535-7732 ; 1051-0443
    ISSN (online) 1535-7732
    ISSN 1051-0443
    DOI 10.1016/j.jvir.2010.05.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Type II endoleaks: diagnosis and treatment algorithm.

    Bryce, Yolanda / Schiro, Brian / Cooper, Kyle / Ganguli, Suvranu / Khayat, Mamdouh / Lam, Cuong Ken / Oklu, Rahmi / Vatakencherry, Geogy / Gandhi, Ripal T

    Cardiovascular diagnosis and therapy

    2018  Volume 8, Issue Suppl 1, Page(s) S131–S137

    Abstract: Elective abdominal aortic aneurysm (AAA) repair is recommended for aneurysms greater than 5.5 cm, symptomatic, or rapidly expanding more than 0.5 cm in 6 months. Seventy-five percent of AAAs today are treated with endovascular aneurysm repair (EVAR) ... ...

    Abstract Elective abdominal aortic aneurysm (AAA) repair is recommended for aneurysms greater than 5.5 cm, symptomatic, or rapidly expanding more than 0.5 cm in 6 months. Seventy-five percent of AAAs today are treated with endovascular aneurysm repair (EVAR) rather than open repair. This is fostered by the lower periprocedural mortality, complications, and length of hospital stay associated with EVAR. However, some studies have demonstrated EVAR to result in higher reintervention rates than with open repair, largely due to endoleaks. Type II is the most common, making up 10-25% of all endoleaks. Type II endoleaks, can potentially enlarge and pressurize the aneurysm sac with a risk of rupture. However, many type II endoleaks spontaneously resolve or never lead to sac enlargement. Imaging surveillance and approaches to management of type II endoleaks are reviewed here.
    Language English
    Publishing date 2018-02-21
    Publishing country China (Republic : 1949- )
    Document type Journal Article ; Review
    ZDB-ID 2685043-6
    ISSN 2223-3660 ; 2223-3652
    ISSN (online) 2223-3660
    ISSN 2223-3652
    DOI 10.21037/cdt.2017.08.06
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Advanced endografting techniques: snorkels, chimneys, periscopes, fenestrations, and branched endografts.

    Kansagra, Kartik / Kang, Joseph / Taon, Matthew-Czar / Ganguli, Suvranu / Gandhi, Ripal / Vatakencherry, George / Lam, Cuong

    Cardiovascular diagnosis and therapy

    2018  Volume 8, Issue Suppl 1, Page(s) S175–S183

    Abstract: The anatomy of aortic aneurysms from the proximal neck to the access vessels may create technical challenges for endovascular repair. Upwards of 30% of patients with abdominal aortic aneurysms (AAA) have unsuitable proximal neck morphology for ... ...

    Abstract The anatomy of aortic aneurysms from the proximal neck to the access vessels may create technical challenges for endovascular repair. Upwards of 30% of patients with abdominal aortic aneurysms (AAA) have unsuitable proximal neck morphology for endovascular repair. Anatomies considered unsuitable for conventional infrarenal stent grafting include short or absent necks, angulated necks, conical necks, or large necks exceeding size availability for current stent grafts. A number of advanced endovascular techniques and devices have been developed to circumvent these challenges, each with unique advantages and disadvantages. These include snorkeling procedures such as chimneys, periscopes, and sandwich techniques; "homemade" or "back-table" fenestrated endografts as well as manufactured, customized fenestrated endografts; and more recently, physician modified branched devices. Furthermore, new devices in the pipeline under investigation, such as "off-the-shelf" fenestrated stent grafts, branched stent grafts, lower profile devices, and novel sealing designs, have the potential of solving many of the aforementioned problems. The treatment of aortic aneurysms continues to evolve, further expanding the population of patients that can be treated with an endovascular approach. As the technology grows so do the number of challenging aortic anatomies that endovascular specialists take on, further pushing the envelope in the arena of aortic repair.
    Language English
    Publishing date 2018-02-21
    Publishing country China (Republic : 1949- )
    Document type Journal Article ; Review
    ZDB-ID 2685043-6
    ISSN 2223-3660 ; 2223-3652
    ISSN (online) 2223-3660
    ISSN 2223-3652
    DOI 10.21037/cdt.2017.08.17
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Step-by-Step Approach to Management of Type II Endoleaks.

    Bryce, Yolanda / Lam, Cuong Ken / Ganguli, Suvranu / Schiro, Brian J / Cooper, Kyle / Cline, Michael / Oklu, Rahmi / Vatakencherry, Geogy / Peña, Constantino S / Gandhi, Ripal T

    Techniques in vascular and interventional radiology

    2018  Volume 21, Issue 3, Page(s) 188–195

    Abstract: Seventy-five percent of abdominal aortic aneurysms are now treated by endovascular aneurysm repair (EVAR) rather than open repair, given the decreased periprocedural mortality, complications, and length of hospital stay for EVAR compared to the surgical ... ...

    Abstract Seventy-five percent of abdominal aortic aneurysms are now treated by endovascular aneurysm repair (EVAR) rather than open repair, given the decreased periprocedural mortality, complications, and length of hospital stay for EVAR compared to the surgical counterpart. An endoleak is a potential complication after EVAR, characterized by continued perfusion of the aneurysm sac after stent graft placement. Type II endoleak is the most common endoleak, and often has a benign course with spontaneous resolution, occurring in the first 6 months after repair. However, these type II endoleaks may result in pressurization of the aneurysm sac and potentially sac rupture. They occur from retrograde collateral blood flow into the aneurysm sac, typically from a lumbar artery or the inferior mesenteric artery. Alternative sources include accessory renal, gonadal, median sacral arteries, and the internal iliac artery. We will discuss our protocol for post-EVAR imaging surveillance and potential type II endoleak treatment strategies, including transarterial, translumbar, transcaval, and perigraft approaches, as well as open surgery.
    MeSH term(s) Aortic Aneurysm, Abdominal/surgery ; Blood Vessel Prosthesis ; Blood Vessel Prosthesis Implantation ; Computed Tomography Angiography ; Contrast Media ; Endoleak/diagnostic imaging ; Endoleak/therapy ; Endovascular Procedures ; Humans ; Postoperative Complications/diagnostic imaging ; Postoperative Complications/therapy ; Ultrasonography, Interventional
    Chemical Substances Contrast Media
    Language English
    Publishing date 2018-06-14
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2170922-1
    ISSN 1557-9808 ; 1089-2516
    ISSN (online) 1557-9808
    ISSN 1089-2516
    DOI 10.1053/j.tvir.2018.06.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: The prevalence of Brugada ECG in adult patients in a large university hospital in the western United States.

    Donohue, Daniel / Tehrani, Faramarz / Jamehdor, Reza / Lam, Cuong / Movahed, Mohammad-Reza

    The American heart hospital journal

    2008  Volume 6, Issue 1, Page(s) 48–50

    Abstract: The prevalence of Brugada ECG in the United States is controversial and has not been studied in the western United States. The goal of this study is to evaluate the prevalence of Brugada syndrome appearing on ECGs in a large university hospital located ... ...

    Abstract The prevalence of Brugada ECG in the United States is controversial and has not been studied in the western United States. The goal of this study is to evaluate the prevalence of Brugada syndrome appearing on ECGs in a large university hospital located in California. A total of 1348 ECGs performed at a university hospital in southern California in 1995 were randomly selected and reviewed for fulfilling 1 of the 3 types of Brugada criteria. Patients' baseline data were recorded, including age, sex, and race. Only 2 (0.14%) ECGs were consistent with 1 of the 3 types of Brugada syndrome. Both were classified as type 2. One of the patients was an Asian woman and the second was a Hispanic man. The mean age of study population was 52.7+/-16.2 years and consisted of 55% Caucasian patients followed by 20.8% Hispanic patients. The incidence of Brugada is rare among adult patients at a university hospital in the western United States.
    MeSH term(s) Adult ; Aged ; Brugada Syndrome/diagnosis ; Brugada Syndrome/epidemiology ; California/epidemiology ; Female ; Hospitals, University ; Humans ; Male ; Middle Aged
    Language English
    Publishing date 2008-02-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2205029-2
    ISSN 1541-9215
    ISSN 1541-9215
    DOI 10.1111/j.1751-7168.2008.06418.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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