4 left ventricular outflow tract obstruction

... Surgery 2009, 4:51 http://www.cardiothoracicsurgery.org/content/4/1/51 obstruction of the the left ventricular outflow tract (LVOT) by the hypertrophied septum including a systolic anterior motion ... revealed a subaortic obstruction in the form of subaortic membrane, which has a congenital basis and is responsible for 8% to 20% of cases of congenital left ventricular outflow obstruction (LVOT) ... primary treatment modality for left ventricular obstruction For a select subset of patients with refractory LVOT obstruction, DDD pacing with a short atrioventricular (AV) delay may be of benefit...

Ngày tải lên: 10/08/2014, 10:20

... caused by stress induced left ventricular outflow tract obstruction Am Heart J 2004;148:903-9 Braunwald E, Sarnoff SJ, Stainsby WN Determinants of Duration and Mean Rate of Ventricular Ejection Circ ... of ventricular contraction during the cardiac cycle The mean phase angles were computed for right ventricular (RV) and LV blood pools as the arithmetic mean phase angle for all pixels in the ventricular ... and the atrio -ventricular junction Left ventricular ejection fraction (LVEF) was calculated as (end-diastolic counts-end-systolic counts)/end-diastolic counts Duration of left ventricular systole...

Ngày tải lên: 05/11/2012, 11:32

... myocardial infarction; LVEF = left ventricular ejection fraction; FS = fractional shortening; LVEDD = left ventricular end-diastolic dimension; LVESD = left ventricular systolic dimension *Transthoracic ... components Impact of Conditioned Medium Treatment on 90-Day Left Ventricular Function and Fractional Shortening The initial left ventricular ejection fraction (LVEF), fractional shortening (FS), ... Groups and 3) were collected and centrifuged (500 g, min) to remove cells and debris Protein extract was electrophoresed in 8% SDS-PAGE containing 0.1% gelatin After migration and washing, gels...

Ngày tải lên: 18/06/2014, 16:20

... the frequency or severity of arrhythmia, including the incidence of premature ventricular contractions, nonsustained ventricular tachycardia, dispersion of the QT interval, and late potentials ... left ventricular ejection fraction after infarction.6 The Multicenter Unsustained Tachycardia Trial (MUSTT) demonstrated the benefit of an ICD in patients with coronary artery disease, a left ventricular ... sustained ventricular tachycardia.7 The Multicenter Automatic Defibrillator Implantation Trial II (MADIT-II)8 further showed a benefit of empirical ICD therapy in patients with a left ventricular...

Ngày tải lên: 27/06/2014, 00:20

... Ireland study of large bowel obstruction caused by colorectal cancer Ann Surg 2004, 1:76-81 Irvin TT, Greaney MG: The treatment of colonic cancer presenting with intestinal obstruction Br J Surg 1977, ... this Figure Plain abdominal films, supine (A) & upright (B), revealed left-sided complete colonic obstruction Figure A self-expandable metallic stent (Wallflex ® 90 mm, Boston Scientific) was inserted ... proximally to splenic flexure and upper rectum distally Sheath was incised continuously Wound retractor (Allexis®, Applied Medical) was applied Left sided colon was bringing to abdominal wall...

Ngày tải lên: 09/08/2014, 01:24

... replacements with implantation of the coronary arteries on the graft Reconstruction of the right ventricular outflow tract was performed with cryopreserved pulmonary valve homografts in all patients The ... Coronary Artery Bypass Grafting; EF: Ejection Fraction; IVS: Interventricular Septal Thickness; LV: Left Ventricular; LVW: Left Ventricular Posterior Wall Thickness; NYHA: New York Heart Association ... Asymptomatic ventricular arrhythmias and mortality risk in subjects with left ventricular hypertrophy J Am Coll Cardiol 1993, 22:1111-6 Michel PL, Mandagout O, Vahanian A, et al: Ventricular arrhythmias...

Ngày tải lên: 10/08/2014, 09:22

... Left ventricular ejection fraction, % 10-15 70-75 75-80 70-75 75 70 60-70 Left ventricular end-diastolic diameter, mm 42 37-40 39 42 37-40 35 Fractional shortening, % 40 50 40 48 45 37 Right ventricular ... met with pump “off” (6000 rpm for HeartMate II) Left ventricular end-diastolic diameter < cm Left ventricular end-systolic diameter < cm Left ventricular ejection fraction > 45% Pulmonary capillary ... Left ventricular assist device and drug therapy for the reversal of heart failure N Engl J Med, 2006 355(18): p 1873-84 Mancini, D.M., et al., Low incidence of myocardial recovery after left ventricular...

Ngày tải lên: 10/08/2014, 09:22

... ventricle (RV) pacemaker/defibrillator lead is located posteriorly in the septal part of RV outflow tract The left ventricular (LV) pacing lead placed epicardially in a mediolateral branch from the coronary ... ventricle An electromagnetic motor draws blood from the inflow port in the left ventricle to the outflow port in the proximal ascending aorta close to the inlet of the coronary arteries Small studies ... Schömig A: A randomized clinical trial to evaluate the safety and efficacy of a percutaneous left ventricular assist device versus intra-aortic balloon pumping for treatment of cardiogenic shock...

Ngày tải lên: 10/08/2014, 09:22

... intervention; NYHA = New York Heart Association; LVEF = left ventricular ejection fraction; LVEDD = left ventricular end-diastolic diameter; LVESD = left ventricular end-systolic diameter; LAD = left atrial ... York Heart Association; LVEDD = left ventricular end-diastolic diameter; LVESD = left ventricular end-systolic diameter; LAD = left atrial diameter; LVEF = left ventricular ejection fraction; SPAP ... was measured at end-systole in the four-chamber apical long axis view Left ventricular endsystolic diameter (LVESD), left ventricular end-diastolic diameter (LVEDD), left atrial diameter (LAD) and...

Ngày tải lên: 10/08/2014, 09:22

... difference did not reach statistical significance (P = 0.778) However, the incidence of blood loss, ventricular arrythmias and inotropic support were significantly greater among ONCAB/BH group Transfusion ... PDA Graft 4(10%) 4(5%) 0.019 Atrial Fibrillation (8%) (8%) 0.959 D1 Graft 13(33%) 16(16%) 0.381 Ventricular Arrhythmias (23%) (4%) 0.002 D2 graft 9(23%) 26(27%) 0.022 Myocardial infarction (13.15%) ... to other studies The high mortality among our group of patients was related to the impaired left ventricular function Other factors contributing to the mortality of patients were the preoperative...

Ngày tải lên: 10/08/2014, 09:22

... employed for assessment of right and left ventricular function, exclusion of associated pathologies that preclude OP implantation (intra-atrial shunts, ventricular thrombus, severe aortic insufficiency), ... after left ventricular assist device placement Ann Thorac Surg 2005, 79:66-73 doi:10.1186/1749-8090-5-123 Cite this article as: Awad et al.: Initial experience with off-pump left ventricular ... Implantable left ventricular assist devices N Engl J Med 1998, 339:1522-1533 Rose EA, Gelijns AC, Moskowitz AJ, Heitjan DF, Stevenson LW, Dembitsky W, et al: Long-term mechanical left ventricular...

Ngày tải lên: 10/08/2014, 09:23

... sternotomy The heart appeared markedly distended with severe biventricular failure An Abiomed AB5000™ (Abiomed Inc., Danvers, MA) left ventricular assist device (LVAD) was placed (Figure 1) Restoration ... atrium or left ventricle and an outflow graft to the ascending aorta There is a right VAD (RVAD) counterpart with inflow from the right atrium or right ventricle and outflow to the main pulmonary ... intubation, and occasionally defibrillation for arrhythmia have been described [7-10] The use of a ventricular assist device (VAD) for cardiogenic shock is well known and a variety of conditions–both...

Ngày tải lên: 10/08/2014, 09:23

... left ventricular end-diastolic diameter; LVESD = left ventricular end-systolic diameter; LVEDV = left ventricular enddiastolic volume; LVESV = left ventricular end-systolic volume; LVEDP = left ventricular ... repair (n = 13) LVEDD = left ventricular end-diastolic diameter; LVEDV = left ventricular end-diastolic volume; LVEDP = left ventricular enddiastolic pressure; LVEF = left ventricular ejection fraction; ... anatomically normal MV Following dilatation of the annular -ventricular apparatus, papillary muscle displacement, and an altered ventricular geometry, left ventricular volume overload occurs which decreases...

Ngày tải lên: 10/08/2014, 10:20

... group A (p = 0.031) In the group A, the cause of death was right ventricular failure in one patient with preoperative massive right ventricular infarction, and multiple organ failure in two patient ... associated with higher postoperative morbidity and mortality compared with patients with normal left ventricular function[3] Off pump coronary artery bypass surgery (OPCAB) has theoretical and practical ... coronary artery bypass grafting (CCABG)[4,5] Also in high risk coronary patients, OPCAB is an attractive alternative, but due to hemodynamic instability this cohort of patients has usually been...

Ngày tải lên: 10/08/2014, 10:20

... out-pouching with a narrow neck in the lateral left ventricular wall (arrow) Figure of infarcted myocardial pass perfusion compatible with demonstrate aleft ventricular rupture thin rim 3and and inferoseptal ... microvascular covered by ain the inferolateral short axis (b) first ventricular wall (arrowheads) an impending blister-like contrast pouch obstruction mm Axial (a) Axial (a) and short axis (b) first ... pass perfusion SSFP MR images demonstrate a large area of microvascular obstruction in the inferolateral and inferoseptal left ventricular wall (arrowheads) with an area of blister-like contrast...

Ngày tải lên: 10/08/2014, 10:20

... myocardial wall, f) pericardial restraint and finally g) left-right ventricular interaction Left ventricular relaxation-similar to contraction- is an energy-dependent process, because it requires the ... between systolic and diastolic left ventricular dysfunction [2,29,30] Increased left ventricular end systolic volume for example, affects the rate of left ventricular relaxation, and as a result, ... elevated left ventricular end-diastolic pressure may or may not be associated with systolic dysfunction of left ventricle, suggesting left ventricular DD even in the absence of reduced left ventricular...

Ngày tải lên: 10/08/2014, 10:20

... strain reveals left ventricular dyssynchrony in patients with permanent right ventricular pacing J Am Coll Cardiol 2007, 50(12):1180-1188 Mond HG, Vlay SC: Pacing the right ventricular septum: ... XH, Ho WY, Lau CP: Upgrading pacemaker patients with right ventricular apical pacing to right ventricular septal pacing improves left ventricular performance and functional capacity J Cardiovasc ... 20(8):901-905 McGavigan AD, Roberts-Thomson KC, Hillock RJ, Stevenson IH, Mond HG: Right ventricular outflow tract pacing: radiographic and electrocardiographic correlates of lead position Pacing...

Ngày tải lên: 10/08/2014, 23:20

... the condition The presence of marked left ventricular trabeculation in patients with IVNC is believed to arise as a result of intrauterine arrest of left ventricular myocardial compaction, although ... Isolated noncompaction of left ventricular myocardium A study of eight cases Circulation 1990, 82:507-513 McCulloch C, Jadhav S, Glen S, Bridges A: Isolated left ventricular non-compaction, not ... isolated left ventricular noncompaction: a distinct cardiomyopathy with poor prognosis J Am Coll Cardiol 2000, 36:493-500 Weiford BC, Subbarao VD, Mulhern KM: Noncompaction of the ventricular myocardium...

Ngày tải lên: 11/08/2014, 21:22

... that RV contractility is not changed, therefore, the RV afterload is not affected by OLC ventilation RV contractility was comparable between both ventilation strategies Ventricular contractility ... indicating an unchanged RV contractility during OLC ventilation As the RV contractility did not change, the parameters for RV afterload were not affected by RV contractility – we therefore conclude ... 12.1 ± 12.5 ± 2** Right ventricular ejection fraction (%) 33.1 ± 1.7 33.1 ± 1.7 31.1 ± 1.9 Pulmonary vascular resistance (dynes/s/cm5) 126 ± 38 130 ± 34 137 ± 49 Left ventricular end-diastolic...

Ngày tải lên: 12/08/2014, 23:24

... continuous, beat-to-beat left ventricular area curve (green line) Left ventricular end-diastolic area (LVEDA) was defined as peak of the left ventricular area during diastole Left ventricular end-systolic ... area (LVESA) was defined as minimum left ventricular area during systole Stroke area (SA) was defined as LVEDA – LVESA over the same cardiac cycle Left ventricular end-diastolic area LVEDA was ... stroke(CVP)(ΔSA), the ability of respiresponse and central (ΔPP), left ventricular at baseline area varia(LVEDAI), to pressureventricular curvesarea end-diastolicto predict tions in pulse in expansion...

Ngày tải lên: 13/08/2014, 03:20