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Bioprosthetics

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https://www.readbyqxmd.com/read/28418954/aortic-root-abscess-clearly-shown-on-111in-leukocyte-scan-but-less-obvious-on-transesophageal-echocardiogram
#1
Harleen Kaur, John Seitz, Mitchel Muhleman, David Cragg, Feng Qing
A 79-year-old man with history of aortic stenosis, status post bioprosthetic aortic valve replacement, episodes of bacteremia, and endocarditis presented to hospital with fever. Clinical assessment led to suspicion of possible endocarditis. Initial interpretation of transesophageal echocardiogram was inconclusive without vegetation in mitral/aortic valve. An In-leukocyte scan demonstrated increased uptake in the area of aortic valve, suggestive of infection. Further review of the transesophageal echocardiogram showed signs of annular abscess...
April 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28413185/comparison-of-the-long-term-outcomes-of-mechanical-and-bioprosthetic-aortic-valves%C3%A3-a-propensity-score-analysis
#2
Kenji Minakata, Shiro Tanaka, Nobushige Tamura, Shigeki Yanagi, Yohei Ohkawa, Shuichi Okonogi, Tatsuo Kaneko, Akihiko Usui, Tomonobu Abe, Mitsuomi Shimamoto, Yoshiharu Takahara, Kazuo Yamanaka, Hitoshi Yaku, Ryuzo Sakata
BACKGROUND: The aim of this study was to assess the long-term outcomes of aortic valve replacement (AVR) with either mechanical or bioprosthetic valves according to age at operation.Methods and Results:A total of 1,002 patients (527 mechanical valves and 475 bioprosthetic valves) undergoing first-time AVR were categorized according to age at operation: group Y, age <60 years; group M, age 60-69 years; and group O, age ≥70 years). Outcomes were compared on propensity score analysis (adjusted for 28 variables)...
April 12, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28389690/energy-dynamics-of-the-intraventricular-vortex-after-mitral-valve-surgery
#3
Kouki Nakashima, Keiichi Itatani, Tadashi Kitamura, Norihiko Oka, Tetsuya Horai, Shohei Miyazaki, Masaki Nie, Kagami Miyaji
Mitral valve morphology after mitral valve surgery affects postoperative intraventricular flow patterns and long-term cardiac performance. We visualized ventricular flow by echocardiography vector flow mapping (VFM) to reveal the impact of different mitral valve procedures. Eleven cases of mechanical mitral valve replacement (nine in the anti-anatomical and two in the anatomical position), three bioprosthetic mitral valve replacements, and four mitral valve repairs were evaluated. The mean age at the procedure was 57...
April 7, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28389187/continuous-blood-flow-in-the-distal-right-sinus-of-valsalva-after-aortic-valve-replacement-bioprosthetic-valve-dysfunction-paravalvular-leak-iatrogenic-damage-or-another-cause
#4
Katherine K Manupipatpong, Paul S Pagel
No abstract text is available yet for this article.
February 3, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28385406/clinical-bioprosthetic-heart-valve-thrombosis-after-transcatheter-aortic%C3%A2-valve-replacement-incidence-characteristics-and-treatment-outcomes
#5
John Jose, Dmitriy S Sulimov, Mohamed El-Mawardy, Takao Sato, Abdelhakim Allali, Erik W Holy, Björn Becker, Martin Landt, Julia Kebernik, Bettina Schwarz, Gert Richardt, Mohamed Abdel-Wahab
OBJECTIVES: The aim of this study was to determine the incidence, characteristics, and treatment outcomes of patients diagnosed with clinical transcatheter heart valve thrombosis. BACKGROUND: Limited data exists on clinical or manifest transcatheter heart valve thrombosis. Prior studies have focused on subclinical thrombosis. METHODS: A retrospective analysis was conducted of prospectively collected data from a single-center registry that included 642 consecutive patients who underwent transcatheter aortic valve replacement between 2007 and 2015 (305 patients had self-expanding valves; balloon-expandable, n = 281; mechanically expanding, n = 56)...
April 10, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28379441/preventive-left-main-and-right-coronary-artery-stenting-to-avoid-coronary-ostia-occlusion-in-high-risk-stentless-valve-in-valve-transcatheter-aortic-valve-implantation
#6
Silvia Maggio, Alessia Gambaro, Roberto Scarsini, Flavio Ribichini
Transcatheter aortic valve implantation is becoming an attractive and promising alternative to redo surgery for aortic bioprosthetic valves degeneration, especially in high-risk patients. However, valve-in-valve transcatheter aortic valve implantation itself carries some procedural risks and potential challenges that interventionists must be aware of. An accurate preprocedural planning is fundamental for the prevention of potentially fatal complications. This case describes a novel strategy of simultaneous right and left coronary artery stenting preventing bilateral coronary obstruction in a patient with a stentless surgical aortic valve and extremely low origin of the 2 coronary arteries...
March 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28367855/early-antithrombotic-therapy-after-bioprosthetic-aortic-valve-replacement-in-elderly-patients-a-single-center-experience
#7
Seok In Lee, Kyo Seon Lee, Joon Bum Kim, Suk Jung Choo, Cheol Hyun Chung, Jae Won Lee, Sung-Ho Jung
PURPOSE: Early antithrombotic therapy after bioprosthetic aortic valve replacement (AVR) is controversial. This study aimed to retrospectively compare between warfarin and aspirin treatment in the 3 months after bioprosthetic AVR for elderly patients more than 60 years old, and to determine the optimal antithrombotic therapy. METHODS: This retrospective study included 479 patients in single center from January 1994 to June 2014. Patients were divided into two groups (Wa group, warfarin; As group, aspirin)...
March 29, 2017: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28363949/incidental-finding-of-anomalous-circumflex-coronary-artery-from-right-coronary-sinus-prior-to-aortic-valve-surgery
#8
Amer Harky, Alexander Hof, Mohammad U Ahmad, Rakesh Uppal
Anomalous origin of the left circumflex (Cx) artery is a common and mostly benign coronary artery anomaly. We report the case of a man aged 52 years who presented to his local hospital with progressive breathlessness on exertion and syncopal episodes. His admission transthoracic echocardiography (TTE) showed bicuspid aortic valve, severe aortic stenosis with a valve area of 0.5 cm(2) and his left ventricular ejection fraction (LVEF) was 27%. His coronary angiogram showed normal coronary arteries but anomalous origin of the Cx artery from the right coronary...
March 31, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28359556/valve-replacement-surgery-in-severe-chronic-kidney-disease
#9
Min Ho Ju, Sung-Ho Jung, Suk Jung Choo, Cheol Hyun Chung, Jae Won Lee, Joon Bum Kim
BACKGROUND: The impact of prosthetic choices in patients with severe chronic kidney disease (CKD) on long-term outcomes has not been well established. METHODS: The study involved 152 adult patients (61.6±14.1yrs.; 64 females) undergoing heart valve surgery who had stage 4 (n=87) or 5 CKD (end-stage; n=65) based on Kidney Disease Outcomes Quality Initiative Guidelines. To reduce the impact of selection bias between mechanical (n=92) and bio-prostheses groups (n=60), propensity score analyses were conducted...
March 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28359486/intraoperative-bioprosthetic-valve-dysfunction-causing-severe-mitral-regurgitation
#10
Philip Y K Pang, Susan Garwood, Sabet W Hashim
Structural degeneration of bioprosthetic valves usually occurs gradually over time. Failure of a bioprosthetic valve immediately after implantation is extremely rare. Possible causes include obstruction of valve leaflets from preserved subvalvular tissue during chordal-sparing mitral valve replacement (MVR) or strut entrapment by suture loops. We report 2 cases of acute bioprosthetic mitral valve (MV) dysfunction involving newly implanted Perimount Theon (Edwards Lifesciences, Irvine, CA) bioprostheses, causing severe transvalvular mitral regurgitation (MR)...
April 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28353137/high-risk-trans-catheter-aortic-valve-replacement-in-a-failed-freestyle-valve-with-low-coronary-height-a-case-report
#11
Ashkan Karimi, Negiin Pourafshar, George Dibu, Thomas M Beaver, Anthony A Bavry
A 55-year-old male with a history of two prior cardiac surgeries presented with decompensated heart failure due to severe bioprosthetic aortic valve insufficiency. A third operation was viewed prohibitively high risk and valve-in-valve trans-catheter aortic valve replacement was considered. There were however several high-risk features and technically challenging aspects including low coronary ostia height, poor visualization of the aortic sinuses, and difficulty in identification of the coplanar view due to severe aortic insufficiency, and a highly mobile aortic valve mass...
March 28, 2017: Cardiology and Therapy
https://www.readbyqxmd.com/read/28348807/successful-treatment-of-listeria-monocytogenes-prosthetic-valve-endocarditis-using-rifampicin-and-benzylpenicillin-in-combination-with-valve-replacement
#12
Tasnim Hasan, William Chik, Sharon Chen, Jen Kok
Introduction.Listeria monocytogenes is an uncommon cause of prosthetic valve endocarditis (PVE). Recommended antimicrobial therapy typically includes intravenous β-lactams with or without synergistic aminoglycosides. In vitro studies have previously identified antagonism when rifampicin has been used in combination with β-lactams. However, in vivo data of rifampicin use are limited despite its enhanced anti-biofilm activity. Case presentation. A 63-year-old male presented with fever and back pain. L. monocytogenes bacteraemia and bioprosthetic aortic valve endocarditis was confirmed, along with spinal discitis and osteomyelitis...
February 2017: JMM Case Reports
https://www.readbyqxmd.com/read/28348609/erratum-to-cezary-danielecki-implantation-of-mitral-aortic-and-tricuspid-bioprostheses-due-to-infective-endocarditis-with-necessary-reimplantation-of-the-bioprosthetic-aortic-valve-kardiochirurgia-i-torakochirurgia-polska-2016-13-3-248-250
#13
(no author information available yet)
[This corrects the article DOI: 10.5114/kitp.2016.62615.].
December 2016: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28347474/platelet-activation-of-mechanical-versus-bioprosthetic-heart-valves-during-systole
#14
Mohammadali Hedayat, Hafez Asgharzadeh, Iman Borazjani
Thrombus formation is a major concern for recipients of mechanical heart valves (MHVs), which requires them to take anticoagulant drugs for the rest of their lives. Bioprosthetic heart valves (BHVs) do not require life-long anticoagulant therapy but deteriorate after 10-15years. The thrombus formation is initiated by the platelet activation which is thought to be mainly generated in MHVs by the flow through the hinge and the leakage flow during the diastole. However, our results show that the activation in the bulk flow during the systole phase might play an essential role as well...
March 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28347328/a-rare-case-report-of-early-bioprosthetic-valve-thrombosis-presenting-with-acute-heart-failure-salvaged-by-thrombectomy
#15
Jingya Fan, Peng Teng, Yu Zou, Liang Ma
BACKGROUND: Bioprosthetic valve thrombosis is previously considered as an extremely rare complication which hasn't been systemically recognized and understood. CASE PRESENTATION: Herein, we present an unusual case of a patient manifesting with acute heart failure, secondary to thrombus formation in a porcine aortic bioprosthesis which was implanted 11 months prior to hospitalization. Due to the patient's poor heart function and intraoperative findings, thrombectomy was performed...
March 27, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28345243/dehiscence-of-a-pulmonary-bioprosthesis-with-a-focal-dissection-of-the-pulmonary-artery-in-a-patient-with-congenital-pulmonic-stenosis
#16
Evin Yucel, Ami Bhatt, Christos G Mihos, Brian B Ghoshhajra, Doreen DeFaria Yeh
Pulmonary valve replacement (PVR) is the most common adult congenital cardiac operation performed. Valve degeneration leading to prosthetic stenosis and/or regurgitation is a long-term risk in this population and may be associated with paravalvular leak (PVL). Complications involving the proximal pulmonary artery, including dissection, are less clearly defined. Herein, we report the case of a 30-year-old patient with a history of multiple pulmonary valve interventions secondary to congenital pulmonic stenosis, who developed dehiscence of a bioprosthetic PVR associated with significant paravalvular leak (PVL) and further complicated by a focal dissection of the proximal pulmonary artery...
March 27, 2017: Echocardiography
https://www.readbyqxmd.com/read/28343443/lacosamide-induced-recurrent-ventricular-tachycardia-in-the-acute-care-setting
#17
Theodore J Berei, Matthew P Lillyblad, Adrian K Almquist
Lacosamide is a new-generation antiepileptic drug (AED) most commonly used adjunctively in the setting of partial-onset seizures refractory to traditional therapy. We describe the first case report, to our knowledge, of a patient who developed recurrent, sustained ventricular tachycardia with multiple administrations of lacosamide in an acute setting. A 70-year-old woman with a history significant for valvular heart disease was admitted to the inpatient cardiology service for worsening heart failure. On hospital day 7, she received a bioprosthetic aortic valve...
January 1, 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28335795/gemella-morbillorum-endocarditis-of-pulmonary-valve-a-case-report
#18
Dan Li, Zhicheng Zhu, Xiaomei Zheng, Weitie Wang, Rihao Xu, Kexiang Liu
BACKGROUND: Pulmonary valve infective endocarditis is a rare finding for endocarditis. Infective endocarditis caused by Gemella morbillorum remains a scanty occurrence. CASE PRESENTATION: This is a case reported of a 28-year-old Chinese male with endocarditis caused by pulmonary valve infection of Gemella morbillorum associated with congenital ventricular septal defect, atrial septal defect and double-chambered right ventricle. The patient presented with fever, shortness of breath, progressively worsening exertional fatigue, dyspnea and weight loss for 3 months...
March 23, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28330691/bioprosthetic-surgical-and-transcatheter-heart-valve-thrombosis
#19
Jeroen J Bax, Gregg W Stone
No abstract text is available yet for this article.
March 17, 2017: Lancet
https://www.readbyqxmd.com/read/28330690/subclinical-leaflet-thrombosis-in-surgical-and-transcatheter-bioprosthetic-aortic-valves-an-observational-study
#20
Tarun Chakravarty, Lars Søndergaard, John Friedman, Ole De Backer, Daniel Berman, Klaus F Kofoed, Hasan Jilaihawi, Takahiro Shiota, Yigal Abramowitz, Troels H Jørgensen, Tanya Rami, Sharjeel Israr, Gregory Fontana, Martina de Knegt, Andreas Fuchs, Patrick Lyden, Alfredo Trento, Deepak L Bhatt, Martin B Leon, Raj R Makkar
BACKGROUND: Subclinical leaflet thrombosis of bioprosthetic aortic valves after transcatheter valve replacement (TAVR) and surgical aortic valve replacement (SAVR) has been found with CT imaging. The objective of this study was to report the prevalence of subclinical leaflet thrombosis in surgical and transcatheter aortic valves and the effect of novel oral anticoagulants (NOACs) on the subclinical leaflet thrombosis and subsequent valve haemodynamics and clinical outcomes on the basis of two registries of patients who had CT imaging done after TAVR or SAVR...
March 19, 2017: Lancet
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