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E-Journal - Volume 2 - Clinical applications of intracardiac echocardiography during diagnostic and interventional ... Phased-array intracardiac echocardiography for defining cavotricuspid isthmus anatomy during radiofrequency ablation of typical atrial flutter. Phased-array intracardiac echocardiography monitoring during pulmonary vein isolation in patients with atrial fibrillation: impact on outcome and complications. Phased-array intracardiac echocardiography during pulmonary vein isolation and linear ablation for atrial fibrillation. www.escardio.org /knowledge/cardiology_practice/ejournal_vol2/vol2no39.htm   (2199 words)

Cardiovascular Ultrasound | Abstract | Preventing complicated transseptal puncture with intracardiac echocardiography: ... According to fluoroscopy the transseptal needle had a correct position, but the intracardiac echo image showed that it was actually pointing towards the aortic root and most importantly, that it was virtually impossible to stabilize it in the fossa itself. Based on intracardiac echo findings a decision was made to limit the procedure only to ablation of the cavotricuspid isthmus and not to proceed further so as to avoid complications. This case report illustrates the usefulness of the intracardiac echocardiography in preventing serious or even fatal complications in transseptal procedures when the cardiac anatomy is unusual or distorted. www.cardiovascularultrasound.com /content/3/1/5/abstract   (306 words)

Effectiveness and Cost-Effectiveness of Echocardiography and Carotid Imaging in Management of Stroke In two studies of TTE among young patients (aged 15 to 45) with stroke, the pooled prevalence of intracardiac thrombus in 180 patients was 2.2 percent (similar to that in unselected patients). The overall yield of intracardiac thrombus using TEE in consecutive stroke patients was 1.7 percent (95 percent CI, 0.5 to 5.3 percent). Because of the relatively low prevalence of intracardiac thrombus in patients with stroke, it is difficult to assess the accuracy of TTE and TEE in this population. www.ahrq.gov /clinic/epcsums/strokemansum.htm   (4241 words)

BSAC Medical Section - Intracardiac Shunts and Diving   (Site not responding. Last check: 2007-10-29) After a dive which allows venous bubble formation, a diver who has an intracardiac right-to-left shunt is at risk of paradoxical gas embolism, which can result in neurological decompression illness(1,2). It therefore seems reasonable that sport divers known to have an intracardiac shunt should be allowed to dive shallower than 15 metres, provided no other cardiac contraindication exists. If a diver with a shunt wishes to go deeper than 15 metres the options include use of nitrox with an air decompression table (to reduce bubble liberation and tissue nitrogen-load) and use of a table such as the DCIEM table which is believed to result in little or no bubble nucleation. www.bsac.org /medical/c_intra.htm   (490 words)

Intracardiac recordings   (Site not responding. Last check: 2007-10-29) Intracardiac recordings from the specialized conduction system in the atrioventricutar (AV) junction. The recording of various electrograms along the right side of the interventricutar septum with gradual withdrawal of the catheter across the tricuspid valve is shown. Numbers 1 through 5 refer to intracardiac location of catheters along with corresponding electrogram. www.rjmatthewsmd.com /Definitions/pop/206-1fig.htm   (107 words)

BioMed Central | Full text | An ethnic predilection for fetal echogenic intracardiac focus identified during targeted ... The current study was performed to determine the rate of echogenic intracardiac foci in patients of Japanese ancestry and the difference between Japanese patients and a racially mixed general population. Echogenic intracardiac foci were defined as echogenic foci found in either or both ventricles on either an apical or lateral four-chamber view. Only one of the 14 aneuploid fetuses had an echogenic intracardiac focus as the only sonographic marker, and this occurred in a woman older than 35 years [18]. www.biomedcentral.com /1471-2393/4/12   (2650 words)

Transposition of the great vessels   (Site not responding. Last check: 2007-10-29) Transposition of the great vessels (TGV) is a form of congenital heart disease, in which the aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle, with an associated intracardiac shunt. As a safety mechanism, an intracardiac shunt (ie: an atrial septal defect) opens, and this allows the oxygen-rich blood that returns from the lungs to partially mix with the blood in the right ventricle, allowing oxygen to be delivered to the organs of the body. While the x-ray may be normal at birth, the cardiac sillouette gradually enlarges into a characteristic globular or egg-on-its-side appearance. en.mcfly.org /Transposition_of_the_great_vessels   (196 words)

Use of Intracardiac Echocardiography to Guide Ablation of Atrial Fibrillation -- Cooper and Epstein 104 (25): 3010 -- ...   (Site not responding. Last check: 2007-10-29) Intracardiac echocardiography during radiofrequency catheter ablation of cardiac arrhythmias in humans. Intracardiac echocardiography identifies pulmonary vein ostea more accurately than conventional angiography. Narrowing of the superior vena cava-right atrium junction during radiofrequency catheter ablation for inappropriate sinus tachycardia: analysis with intracardiac echocardiography. circ.ahajournals.org /cgi/content/full/104/25/3010   (2036 words)

Computers in Neonatology: Garson, Arthur Jr.   (Site not responding. Last check: 2007-10-29) In this study decision analysis was used to assess the risks and benefits of three courses of action: (1) primary intracardiac repair; (2) palliative operation in infancy and delayed intracardiac repair; and (3) treatment with propanolol in infancy and delayed intracardiac repair. The choice of action was affected most by the mortality of primary intracardiac repair and the likelihood of a good hemodynamic result from intracardiac repair. It was found that in the institution studied if the mortality rate of primary intracardiac repair is 10 percent or less, intracardiac repair should be performed; otherwise propanolol treatment, which allows delay in intracardiac repair, should be selected. www.neonatology.org /biblio/bib288.html   (282 words)

Healthcare Sales & Marketing Network News: EP MedSystems Receives FDA Market Clearance for ViewMate Intracardiac ... The ViewMate® intracardiac ultrasound catheter imaging system consists of an advanced ultrasound console with an image monitor and a thin, steerable catheter fitted with a transducer on its tip. Intracardiac ultrasound will be very important to EP physicians and cardiologists alike, allowing them to diagnose pathology and to visualize important anatomy during high-risk procedures. For electrophysiology, we believe that intracardiac ultrasound imaging should be an adjunct to all atrial fibrillation ablation therapies and expect that it will become the standard of care. www.salesandmarketingnetwork.com /news_release.php?ID=12253&key=Medtronic   (758 words)

Cardiovascular Ultrasound | Full text | Atypical vessels as an early sign of intracardiac myxoma? The early depiction of small intracardiac tumors by means of angiography relies on the detection of atypical vessels supplied by branches of the left or right coronary artery. However, vascular malformations are not pathognomonic for myxomas [9] and stromal tumors, such as myxomas, have generally poor blood supply, hence a coronary angiographic finding with a neo-vascularized or highly vascularized intracardiac area is more suggestive for other type of cardiac neoplasm. A cluster of small, tortuous and dilated vessels is also seen in old and organised thrombi, haemangiomas and venous malfomations [10]. www.cardiovascularultrasound.com /content/2/1/13   (1227 words)

Echocardiography Cha SD, Gooch AS, Maranhao V. Intracardiac phonocardiograms were obtained from the right atrium in order to study the relation between the clinical signs of tricuspid regurgitation, intracardiac murmurs and the degree of regurgitation demonstrated on right ventriculography with use of a preshaped catheter. Among 35 patients with valvular heart disease, a Carvallo sign (increased intensity of systolic murmur during inspiration) was present in 19 and absent in 16. Five patients had 1+ regurgitation and the intracardiac phonocardiogram was positive in three of these five patients. www2.umdnj.edu /~shindler/carvallo.html   (657 words)

News from the medical & pharmaceutical industry The ViewMate(TM) intracardiac ultrasound catheter system consists of an advanced ultrasound imaging console with an image monitor, and a thin disposable catheter fitted with a 64-element phased-array transducer on its tip. Interior anatomy of the heart is not visible with X-ray, and ultrasound imaging from outside the body does not provide the views and resolution necessary for today's sophisticated minimally invasive procedures, given the physical limitation of viewing around the rib cage and the limitations of employable ultrasound frequencies. It is estimated that approximately 400,000 routine electrophysiology diagnostic and ablation studies are performed in the U.S. each year, and up to 25% can require the placement of a catheter through the atrial septum, a procedure that consists of a long needle puncturing the central wall of the heart. www.medtech.info /news/news_display.php?key_news=20030103ma084751@951   (481 words)

Fall in the number of intracardiac neurons in aging rats.   (Site not responding. Last check: 2007-10-29) Fall in the number of intracardiac neurons in aging rats. The neurons of whole cardiac atria were stained using a NADH-diaphorase technique in young adult (3 months old) (GI) and aging rats (20 months old) (GII). It is suggested that in aging rats, structural changes and reorganization of the remnant neurons accompany neuron reduction. www.arclab.org /medlineupdates/abstract_10576331.html   (207 words)

Childhood Cardiac Function After Prenatal Diagnosis of Intracardiac Echogenic Foci -- Wax et al. 22 (8): 783 -- Journal ... intracardiac echogenic foci had an isolated left ventricular ventricular intracardiac echogenic foci persisted in 2 (29%) Are Intracardiac Echogenic Foci Markers of Congenital Heart Disease in the Fetus With Chromosomal Abnormalities? www.jultrasoundmed.org /cgi/content/abstract/22/8/783   (434 words)

MIR Teaching file case pe005   (Site not responding. Last check: 2007-10-29) This study was performed to quantify the right-to-left intracardiac shunt. Based on this study, the right-to-left intracardiac shunt was determined to be 36% (cardiac catheterization with oximetry determined the right-to-left intracardiac shunt to be 33%). This apparent "normal" right-to-left shunt reflects the presence of small particles in the Tc-99m MAA preparation (which are accumulated by phagocytic cells of the reticuloendothelial system, as well as free Tc-99m pertechnetate or other Tc-99m oxides in the radiopharmaceutical preparation or released by breakdown of Tc-99m MAA particles. gamma.wustl.edu /pe005te161.html   (417 words)

M-59C - Intracardiac Electrophysiologic Studies   (Site not responding. Last check: 2007-10-29) Cardiac electrophysiologic studies are invasive procedures that provide a detailed analysis of the electrical conduction system of the heart. These tests involve the placement of special catheters into the heart and cardiac vessels for the purpose of pacing and recording intracardiac electrical activity. In accordance with CMS Ruling 95-1 (V), utilization of these services should be consistent with locally acceptable standards of practice. www.hgsa.com /professionals/lcd/m59c.html   (730 words)

Right Atrial Myxoma Secondary tumors of the heart occur 40-50 times more frequently than primary cardiac tumors but are less likely in this patient because of the lack of a known primary neoplasm, absence of other metastatic foci, and lack of extension into the IVC as seen in renal cell carcinoma. Myxoma is the most common benign intracardiac tumor in adults accounting for nearly 40% of all cardiac tumors. Freedberg RS, Kronzon I, Rumanik WM, Liebeskind D. The ontribution of MRI to the evaluation of intracardiac tumors diagnosed by echocardiography. brighamrad.harvard.edu /Cases/bwh/hcache/46/full.html   (522 words)

DiagnosisHeart.com: Articles Essen, Germany - Researchers at the Cardiology Division, University of Essen have described the use of intracardiac echocardiography to more accurately deploy closure devices (umbrellas) for closure of patent foramen ovale or atrial septal defects. Although the vast majority (38/44) of procedures were for closure of patent foramen ovale, intracardiac echocardiography was able to direct the whole procedure, from balloon sizing of the defects to diagnosing the correct morphology of the defect for more accurate deployment of the occluder device. Intracardiac echocardiography may one day supplant transesophageal echocardiography for the placement of interatrial septal occlusion devices. www.diagnosisheart.com /showarticle.php?articleid=48   (178 words)

electrical cardioversion in atrial fibrillation - General Practice Notebook   (Site not responding. Last check: 2007-10-29) The DC shock is synchronized with an R wave on the electrocardiogram in order to reduce the chance of ventricular fibrillation. DC cardioversion may precipitate systemic emboli from intracardiac thrombus. Co-ordinated atrial activity may not resume for 2 weeks following cardioversion even if sinus rhythm is apparent on the ECG, for this reason anticoagulation should continue for 1 month. www.gpnotebook.co.uk /cache/-1543110602.htm   (232 words)

UpToDate Echocardiography in detection of intracardiac sources of embolism Reference to these materials is no substitute for medical advice based on individual patient assessment, and may not be applicable in all circumstances. — Intracardiac sources of cerebrovascular ischemic events are increasingly being recognized and may account for 15 to 20 percent of the 500,000 strokes which occur annually in the United States [1]. Although transthoracic echocardiography remains the cornerstone of noninvasive cardiac imaging, transesophageal echocardiography (TEE) has been shown to be a superior method for the identification of most cardiac sources of emboli [2,3], and more cost effective [4]. patients.uptodate.com /topic.asp?file=echo_ima/14714&title=undefined   (573 words)

Three-Dimensional Colour Doppler.   (Site not responding. Last check: 2007-10-29) For the first time, the three-dimensional visualisation of intracardiac blood flow dynamics has been made possible in clinical examinations. Three-dimensional colour Doppler discloses the enormous diagnostic potential of colour Doppler flow imaging technique, and provides the cardiologist with a powerful new tool for studying and assessing cardiac flow disturbances. In addition, new blood flow patterns, not previously described, can be observed and studied. www.osl.u-net.com /m352.htm   (124 words)

eMedicine - Pulmonary Hypertension, Eisenmenger Syndrome : Article Excerpt by: Jeff L Myers, MD, PhD   (Site not responding. Last check: 2007-10-29) The presence of right-to-left shunting, and the associated cyanosis, is referred to as Eisenmenger's syndrome. Eisenmenger syndrome occurs when a previous left-to-right shunt is converted into a right-to-left shunt secondary to the elevated pulmonary artery pressures and associated pulmonary vascular disease. An intracardiac communication allows high pulmonary artery pressures to develop and produce right-to-left intracardiac blood flow. www.emedicine.com /ped/byname/pulmonary-hypertension-eisenmenger-syndrome.htm   (551 words)

uhrad.com - Body Imaging Teaching Files   (Site not responding. Last check: 2007-10-29) Discussion: The differential diagnosis of intracardiac masses include primary and metastatic tumors, with metastatic disease being 10-40 times more common. The most common intracardiac tumor is a myxoma, with approximately 75% in the left atrium. There is a relative paucity of literature on imaging of intraventricular thrombus. www.uhrad.com /ctarc/ct042.htm   (216 words)

Echogenic Intracardiac Focus found in fetal   (Site not responding. Last check: 2007-10-29) I am 27 years old and 18 weeks along and found out in my last US that my baby has this spot on the left ventrical near the heart(EIF). An Echogenic Intracardiac Focus is a "bright small spot" found on the fetal's ventrical muscle by the heart usually on the left side. This "soft marker" may or may not conclude as a DownSyndrome baby, depending on the age of the monther and further findings of more test. interact.iparenting.com /printthread.php?Board=pt_boardhighrisk&main=1310978&type=post   (133 words)

Unipolar and bipolar intracardiac electrograms   (Site not responding. Last check: 2007-10-29) Unipolar (top) and bipolar (bottom) intracardiac electrograms (IEFMS) from a patient with a ventricular pace, aker whose underlying rhythm is atrial fibrillation. Note that the bipolar signal is sharper, with less sensing of far field ventricular activity or T waves. The bipolar electrogram would be expected to be approximately 2 mV. www.rjmatthewsmd.com /Definitions/pop/16ffig.htm   (86 words)

Aktuelle Nachrichten aus der Industrie: Medizintechnik On April 3, 2003, EPMedSystems submitted its ViewMate(R) intracardiac ultrasound catheter system 510(k) filing to the US Food and Drug Administration for regulatory approval to sell within the United States. The ViewMate(R) intracardiac ultrasound catheter system consists of an advanced ultrasound imaging console with an image monitor and a thin disposable catheter fitted with a transducer on its tip. The system allows cardiologists and electrophysiologists to optimally view the interior anatomy of the heart, allowing these physicians to identify, diagnose and assist in the treatment of a number of heart abnormalities and conditions. www.medizintechnik.info /news/news_display.php?key_news=20030507ma124509@1361   (266 words)

Intracardiac Lead Connector   (Site not responding. Last check: 2007-10-29) The IS-1 connection to the intracardiac lead is made using an industry-standard tool. The connection to DSI leads is made by crimping the ends of the connector leads to the DSI transmitter leads in the same fashion as when repairing broken leads. The Intracardiac Lead Connector may be used with either unipolar or bipolar intracardiac leads. www.datasci.com /research/is1_connector.html   (188 words)

American College of Cardiology/American Heart Association Clinical Competence Statement on Invasive Electrophysiology ...   (Site not responding. Last check: 2007-10-29) Guidelines for clinical intracardiac electrophysiological and catheter ablation procedures: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on Clinical Intracardiac Electrophysiologic and Catheter Ablation Procedures), developed in collaboration with the North American Society of Pacing and Electrophysiology. Catheter ablation of ventricular tachycardia with intracardiac shocks: results in 33 patients. Intracardiac echocardiographic imaging of cardiac abnormalities, ischemic myocardial dysfunction, and myocardial perfusion: studies with a 10 MHz ultrasound catheter. circ.ahajournals.org /cgi/content/full/102/18/2309   (6691 words)

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