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https://www.readbyqxmd.com/read/28228636/progressive-ischemic-stroke-due-to-thyroid-storm-associated-cerebral-venous-thrombosis
#1
Natsumi Tanabe, Eiji Hiraoka, Masataka Hoshino, Gautam A Deshpande, Kana Sawada, Yasuhiro Norisue, Jumpei Tsukuda, Toshihiko Suzuki
BACKGROUND Cerebral venous thrombosis (CVT) is a rare but fatal complication of hyperthyroidism that is induced by the hypercoagulable state of thyrotoxicosis. Although it is frequently difficult to diagnose CVT promptly, it is important to consider it in the differential diagnosis when a hyperthyroid patient presents with atypical neurologic symptoms. CASE REPORT A 49-year-old Japanese female with unremarkable medical history came in with thyroid storm and multiple progressive ischemic stroke identified at another hospital...
February 23, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28223050/tricuspid-regurgitation-associated-with%C3%A2-ischemic-mitral-regurgitation-characterization-evolution-after-mitral-surgery-and-value-of-tricuspid-repair
#2
José L Navia, Haytham Elgharably, Hoda Javadikasgari, Ahmed Ibrahim, Marijan Koprivanac, Ashley M Lowry, Eugene H Blackstone, Allan L Klein, A Marc Gillinov, Eric E Roselli, Lars G Svensson
BACKGROUND: Tricuspid regurgitation (TR) often accompanies ischemic mitral regurgitation and is generally assumed to be a secondary consequence of altered hemodynamics of the left-sided regurgitation. We hypothesized that it may also be a direct consequence of right-sided ischemic disease. Therefore, our objectives were to (1) characterize the nature of this TR and (2) describe its time course after mitral valve surgery for ischemic mitral regurgitation, with or without concomitant tricuspid valve repair...
February 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28219811/stress-echocardiography-in-patients-who-experienced-mechanical-ventilation-weaning-failure
#3
Manuel Ruiz-Bailén, Jesús Cobo-Molinos, Ana Castillo-Rivera, María Dolores Pola-Gallego-de-Guzmán, Antonio Cárdenas-Cruz, Antonio Martínez-Amat, María Sevilla-Martínez, Clara Hernández-Caballero
INTRODUCTION: Critically ill patients may suffer varying degrees of temporary myocardial dysfunction during respiratory weaning that could play an important role in weaning failure. OBJECTIVES: In this study, we tried to assess the existence of temporary diastolic dysfunction during respiratory weaning. METHODS: Inclusion period is from 2006 to 2015. In this study, we included 181 ventilated patients with cardiogenic shock that were being weaned from mechanical ventilation...
January 18, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28218210/optimal-timing-of-surgical-revascularization-for-myocardial-infarction-and-left-ventricular-dysfunction
#4
Rong Wang, Nan Cheng, Cang-Song Xiao, Yang Wu, Xiao-Yong Sai, Zhi-Yun Gong, Yao Wang, Chang-Qing Gao
BACKGROUND: The optimal timing of surgical revascularization for patients presenting with ST-segment elevation myocardial infarction (STEMI) and impaired left ventricular function is not well established. This study aimed to examine the timing of surgical revascularization after STEMI in patients with ischemic heart disease and left ventricular dysfunction (LVD) by comparing early and late results. METHODS: From January 2003 to December 2013, there were 2276 patients undergoing isolated coronary artery bypass grafting (CABG) in our institution...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28216518/optimization-of-t1-weighted-imaging-parameters-in-mr-carotid-plaque-imaging-influence-for-the-quantitative-evaluation-among-different-mri-scanner-types
#5
Takanori Naka, Mitsuyuki Takahashi, Koutarou Takeda, Tarou Igarashi, Tetsukazu Hondera
Carotid artery plaques with high-signal intensity on T1 weighted image (T1 WI) are known to cause cerebral ischemic disease. Signal intensity ratio (SIR), which is calculated from T1 WI in the quantitative evaluation of plaque characterization have been used. However, the various sequences in T1 WI and difference in the sequences were utilized among institutions. Therefore, difference in sequence may influence SIR. The purpose of this study was to evaluate the optimization of T1 WI sequence in MR carotid plaque imaging...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28216219/the-feasibility-of-transcatheter-edge-to-edge-repair-in-the-management-of-acute-severe-ischemic-mitral-regurgitation
#6
Mohamad Alkhouli, Stanley Wolfe, Fahad Alqahtani, Sami Aljohani, James Mills, Stephen Gnegy, Vinay Badhwar
No abstract text is available yet for this article.
February 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28209728/evaluation-of-cell-therapy-on-exercise-performance-and-limb-perfusion-in-peripheral-artery-disease-the-cctrn-patients-with-intermittent-claudication-injected-with-aldh-bright-cells-pace-trial
#7
Emerson C Perin, Michael P Murphy, Keith L March, Roberto Bolli, John Loughran, Phillip C Yang, Nicholas J Leeper, Ronald L Dalman, Jason Q Alexander, Timothy D Henry, Jay H Traverse, Carl J Pepine, R David Anderson, Scott Berceli, James T Willerson, Raja Muthupillai, Amir A Gahremanpour, Ganesh Raveendran, Omaida C Velazquez, Joshua M Hare, Ivonne H Schulman, Vijaykumar S Kasi, William R Hiatt, Bharath Ambale-Venkatesh, João A Lima, Doris A Taylor, Micheline M Resende, Adrian P Gee, April G Durett, Jeannette Bloom, Sara Richman, Patricia G'Sell, Shari Williams, Fouzia Khan, Elsie G Ross, Michelle R Santoso, JoAnne Goldman, Dana Leach, Eileen Handberg, Benjamin Y C Cheong, Nichole A Piece, Darcy DiFede, Barb Bruhn-Ding, Emily Caldwell, Judy Bettencourt, Dejian Lai, Linda B Piller, Lara M Simpson, Michelle Cohen, Shelly L Sayre, Rachel W Vojvodic, Lem Moyé, Ray F Ebert, Robert D Simari, Alan T Hirsch
Background -Atherosclerotic peripheral artery disease (PAD) affects 8-12% of Americans over 65 and is associated with a major decline in functional status, increased myocardial infarction and stroke rates, and increased risk of ischemic amputation. Current treatment strategies for claudication have limitations. PACE is an NHLBI-sponsored, randomized, double-blind, placebo-controlled phase 2, exploratory clinical trial designed to assess safety and efficacy of autologous bone marrow-derived aldehyde dehydrogenase bright (ALDHbr) cells in PAD patients and to explore associated claudication physiologic mechanisms...
February 16, 2017: Circulation
https://www.readbyqxmd.com/read/28202818/-hypoglycemic-hemiplegia
#8
Eriko Sugawara, Yosuke Kudo, Ken Johkura
Hypoglycemia may cause acute hemiplegia. The most common diffusion-weighted MR imaging finding in patients with hypoglycemic hemiplegia is the hyperintense lesion involving the internal capsule, mimicking acute ischemic stroke. Thus, in patients with acute onset hemiplegia, it is important to differentiate hypoglycemia on arrival by immediate blood glucose measurement. It has recently been shown that hypoglycemic brain injury start in large white matter tracts such as internal capsule and spread throughout the whole brain, including the gray matter...
February 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28190606/2016-update-to-the-american-association-for-thoracic-surgery-consensus-guidelines-ischemic-mitral-valve-regurgitation
#9
EDITORIAL
Irving L Kron, Damien J LaPar, Michael A Acker, David H Adams, Gorav Ailawadi, Steven F Bolling, Judy W Hung, D Scott Lim, Michael J Mack, Patrick T O'Gara, Michael K Parides, John D Puskas
No abstract text is available yet for this article.
January 17, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28190604/the-fate-of-acute-lacunar-lesions-in-terms-of-shape-and-size
#10
Ki Jeong Lee, Hyeyoung Jung, Yoon-Sang Oh, Eun Ye Lim, A-Hyun Cho
BACKGROUND: The description of lacunar infarcts on imaging is widely variable. In particular, there are fewer agreements on lacunar lesion size and the presence of cavitation. In this regard, we investigated the changes in size and shape of acute ischemic lesion that is possibly considered as small vessel occlusion on long-term follow-up. METHODS: Patients with acute single subcortical ischemic lesion on penetrating arterial territories and without definite cause of cardioembolism and large vessel disease were included...
February 9, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28183991/cardiac-and-respiratory-motion-correction-for-simultaneous-cardiac-pet-mr
#11
Christoph Kolbitsch, Mark A Ahlman, Cynthia Davies-Venn, Robert Evers, Michael Hansen, Devis Peressutti, Paul Marsden, Peter Kellman, David A Bluemke, Tobias Schaeffter
Cardiac Positron Emission Tomography (PET) is a versatile imaging technique providing important diagnostic information about ischemic heart diseases. Respiratory and cardiac motion of the heart can strongly impair image quality and therefore diagnostic accuracy of cardiac PET scans. The aim of this study is to investigate a new cardiac PET-Magnetic Resonance (MR) approach providing respiratory and cardiac motion-compensated MR and PET images in less than five minutes. Methods: Free-breathing 3D MR data was acquired and retrospectively binned into multiple respiratory and cardiac motion states...
February 9, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28182715/mr-angiography-allows-defining-severity-grades-of-cerebral-vasospasm-in-an-experimental-double-blood-injection-subarachnoid-hemorrhage-model-in-rats
#12
Vesna Malinova, Marios N Psychogios, Ioannis Tsogkas, Birte Koennecke, Kim Bleuel, Bogdan Iliev, Veit Rohde, Dorothee Mielke
OBJECTIVE: Magnetic resonance (MR) imaging has been used for the detection of cerebral vasospasm (VSP) related infarction in experimental subarachnoid hemorrhage (eSAH) in rats. Conventional angiography is generally used to visualize VSP, which is an invasive technique with a possible increase in morbidity and mortality. In this study we evaluated the validity of MR-angiography (MRA) in detecting VSP and its feasibility to define VSP severity grades after eSAH in rats. METHODS: SAH was induced using the double-hemorrhage model in 12 rats...
2017: PloS One
https://www.readbyqxmd.com/read/28180081/automatic-quantification-of-ischemic-injury-on-diffusion-weighted-mri-of-neonatal-hypoxic-ischemic-encephalopathy
#13
Keelin Murphy, Niek E van der Aa, Simona Negro, Floris Groenendaal, Linda S de Vries, Max A Viergever, Geraldine B Boylan, Manon J N L Benders, Ivana Išgum
A fully automatic method for detection and quantification of ischemic lesions in diffusion-weighted MR images of neonatal hypoxic ischemic encephalopathy (HIE) is presented. Ischemic lesions are manually segmented by two independent observers in 1.5 T data from 20 subjects and an automatic algorithm using a random forest classifier is developed and trained on the annotations of observer 1. The algorithm obtains a median sensitivity and specificity of 0.72 and 0.99 respectively. F1-scores are calculated per subject for algorithm performance (median = 0...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28164104/left-ventricle-mitral-valve-ring-size-mismatch-understanding-the-limitations-of-mitral-valve-repair-for-ischemic-mitral-regurgitation
#14
COMMENT
Christos G Mihos, Evin Yucel, Orlando Santana
No abstract text is available yet for this article.
January 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28154122/measurement-of-lactate-content-and-amide-proton-transfer-values-in-the-basal-ganglia-of-a-neonatal-piglet-hypoxic-ischemic-brain-injury-model-using-mri
#15
Y Zheng, X-M Wang
BACKGROUND AND PURPOSE: As amide proton transfer imaging is sensitive to protein content and intracellular pH, it has been widely used in the nervous system, including brain tumors and stroke. This work aimed to measure the lactate content and amide proton transfer values in the basal ganglia of a neonatal piglet hypoxic-ischemic brain injury model by using MR spectroscopy and amide proton transfer imaging. MATERIALS AND METHODS: From 58 healthy neonatal piglets (3-5 days after birth; weight, 1-1...
February 2, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28153345/usefulness-of-the-mrwallets-scoring-system-to-predict-first-diagnosed-atrial-fibrillation-in-patients-with-ischemic-stroke
#16
Antonio Muscari, Andrea Bonfiglioli, Luca Faccioli, Marco Ghinelli, Donatella Magalotti, Francesco Manzetto, Anna Pontarin, Giovanni M Puddu, Luca Spinardi, Eleonora Tubertini, Marco Zoli
Some cryptogenic strokes are caused by undetected paroxysmal atrial fibrillation (AF) and could benefit from oral anticoagulation. In this study, we searched for echocardiographic parameters associated with first diagnosed AF, to form a scoring system for the identification of patients with AF. We examined 571 patients with ischemic stroke (72.7 ± 13.5 years, 50.6% women), subdivided into 4 groups: documented cause without AF, first diagnosed AF, known paroxysmal AF, and permanent AF. All patients underwent transthoracic echocardiography, brain computed tomography scan, carotid/vertebral ultrasound, and continuous electrocardiographic monitoring...
January 5, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28149574/ischemic-mitral-valve-prolapse
#17
REVIEW
Francesco Nappi, Spadaccio Cristiano, Antonio Nenna, Massimo Chello
Ischemic mitral prolapse (IMP) is a pathologic entity encountered in about one-third among the patients undergoing surgery for ischemic mitral regurgitation (IMR). IMP is generally the result of a papillary muscle injury consequent to myocardial, but the recent literature is progressively unveiling a more complex pathogenesis. The mechanisms underlying its development regards the impairment of one or more components of the mitral apparatus, which comprises the annulus, the chordae tendineae, the papillary muscle and the left ventricular wall...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28146594/lyme-carditis-a-case-involving-the-conduction-system-and-mitral-valve
#18
Lakir D Patel, Jay S Schachne
Lyme disease is the most common tick-borne infection in the Northern hemisphere. Cardiac manifestations of Lyme disease typically include variable atrioventricular nodal block and rarely structural heart pathology. The incidence of Lyme carditis may be underestimated based on current reporting practices of confirmed cases. This case of a 59-year-old man with Lyme carditis demonstrates the unique presentation of widespread conduction system disease, mitral regurgitation, and suspected ischemic disease. Through clinical data, electrocardiograms, and cardiac imaging, we show the progression, and resolution, of a variety of cardiac symptoms attributable to infection with Lyme...
February 1, 2017: Rhode Island Medical Journal
https://www.readbyqxmd.com/read/28138001/multiparametric-magnetic-resonance-imaging-for-prediction-of-parenchymal-hemorrhage-in-acute-ischemic-stroke-after-reperfusion-therapy
#19
Kambiz Nael, James R Knitter, Reza Jahan, Jeffery Gornbein, Zahra Ajani, Lei Feng, Brett C Meyer, Lee H Schwamm, Albert J Yoo, Randolph S Marshall, Philip M Meyers, Dileep R Yavagal, Max Wintermark, David S Liebeskind, Judy Guzy, Sidney Starkman, Jeffrey L Saver, Chelsea S Kidwell
BACKGROUND AND PURPOSE: Patients with acute ischemic stroke are at increased risk of developing parenchymal hemorrhage (PH), particularly in the setting of reperfusion therapies. We have developed a predictive model to examine the risk of PH using combined magnetic resonance perfusion and diffusion parameters, including cerebral blood volume (CBV), apparent diffusion coefficient, and microvascular permeability (K2). METHODS: Voxel-based values of CBV, K2, and apparent diffusion coefficient from the ischemic core were obtained using pretreatment magnetic resonance imaging data from patients enrolled in the MR RESCUE clinical trial (Mechanical Retrieval and Recanalization of Stroke Clots Using Embolectomy)...
January 30, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28126752/cerebral-temperature-dysregulation-mr-thermographic-monitoring-in-a-nonhuman-primate-study-of-acute-ischemic-stroke
#20
S Dehkharghani, C C Fleischer, D Qiu, M Yepes, F Tong
BACKGROUND AND PURPOSE: Cerebral thermoregulation remains poorly understood. Temperature dysregulation is deeply implicated in the potentiation of cerebrovascular ischemia. We present a multiphasic, MR thermographic study in a nonhuman primate model of MCA infarction, hypothesizing detectable brain temperature disturbances and brain-systemic temperature decoupling. MATERIALS AND METHODS: Three Rhesus Macaque nonhuman primates were sourced for 3-phase MR imaging: 1) baseline MR imaging, 2) 7-hour continuous MR imaging following minimally invasive, endovascular MCA stroke induction, and 3) poststroke day 1 MR imaging follow-up...
January 26, 2017: AJNR. American Journal of Neuroradiology
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