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Topic: Pulmonary vein

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  Pulmonary vein - Wikipedia, the free encyclopedia
The pulmonary veins return the arterialized blood from the lungs to the left atrium of the heart.
The vein from the middle lobe of the right lung generally unites with that from the upper lobe, so that ultimately two trunks from each lung are formed; they perforate the fibrous layer of the pericardium and open separately into the upper and back part of the left atrium.
At the root of the lung, the superior pulmonary vein lies in front of and a little below the pulmonary artery; the inferior is situated at the lowest part of the hilus of the lung and on a plane posterior to the upper vein.
en.wikipedia.org /wiki/Pulmonary_vein   (495 words)

 Pulmonary artery - Wikipedia, the free encyclopedia
The pulmonary arteries carry blood from the heart to the lungs.
Pulmonary hypertension occurs alone and as a consequence of a number of lung diseases.
pulmonary - aorta - ascending aorta - aortic arch - brachiocephalic - carotid - common carotid
en.wikipedia.org /wiki/Pulmonary_artery   (380 words)

Supracardiac pulmonary venous connection is the commonest anomalous pattern, in which pulmonary veins join in a confluence immediately behind the left atrium and a venous channel usually ascends to the left and forms the left brachiocephalic vein.
Pulmonary vascular resistance, obstruction to pulmonary venous drainage, and the presence of arterial and venous level shunts are key factors in the hemodynamics and clinical features of the different forms of total anomalous pulmonary venous return.
In this variant, an oblique partition separates a proximal atrial chamber, to which are connected the pulmonary veins, from a distal chamber in free communication with the vestibule of the mitral valve and the mouth of the atrial appendage.
www.pediheart.org /practitioners/defects/venoatrial.htm   (4126 words)

 Pulmonary Vein Stenosis
Congenital pulmonary vein stenosis is a rare cause of obstruction of pulmonary venous blood flow with a high mortality.
Two had congenital pulmonary vein stenosis, 5 had pulmonary vein stenosis that was acquired after surgical treatment of total anomalous pulmonary venous connection, and 1 had pulmonary vein stenosis associated with idiopathic mediastinal fibrosis and calcification.
Pulmonary vein stenosis is a rare condition that usually is congenital in origin; it is almost invariably fatal in its bilateral and severe forms.
www.pediheart.org /searches/topic/pvs.htm   (1259 words)

 Congenital Unilateral Pulmonary Vein Atresia: Radiologic Findings in Three Adult Patients -- Heyneman et al. 177 (3): ...
The diagnosis of congenital unilateral pulmonary vein atresia
pulmonary artery, and absence of ipsilateral pulmonary vein
Cor triatriatum, pulmonary vein obstruction, supravalvular mitral stenosis and congenital mitral valve disease.
www.ajronline.org /cgi/content/full/177/3/681   (1904 words)

 THE MERCK MANUAL, Sec. 6, Ch. 72, Pulmonary Embolism   (Site not responding. Last check: 2007-10-12)
Pulmonary embolism: Sudden lodgment of a blood clot in a pulmonary artery with subsequent obstruction of blood supply to the lung parenchyma.
The primary mechanism of increased resistance is obstruction of pulmonary arteries by thrombi, ie, a decrease in the total cross-sectional area of the pulmonary vascular bed.
PI is sometimes due to thrombosis of the pulmonary arteries in situ, as may occur in congenital heart disease associated with severe pulmonary hypertension or in hematologic disorders (eg, sickle cell disease).
www.merck.com /pubs/mmanual/section6/chapter72/72a.htm   (4570 words)

 uhrad.com - Body Imaging Teaching Files
There was a suspicion of a pulmonary embolus and a spiral CT scan of the chest from the aortic arch to the base of the heart was performed (as per the pulmonary embolus protocol) to rule out pulmonary embolus.
The hypogenetic lung syndrome is a rare congenital anomaly that consists of anomalous pulmonary venous drainage to the inferior vena cava, hypoplastic or aplastic pulmonary artery segments, and hypoplastic or absent bronchi.
Alternative methods of locating pulmonary veins at catheterization include exploring the right atrium and adjacent systemic veins and documenting the anomaly by the entrance of the catheter into the vein or by a small hand injection of contrast material.
www.uhrad.com /ctarc/ct227.htm   (874 words)

 Pulmonary Artery/Vein   (Site not responding. Last check: 2007-10-12)
As a result, the only exit is through the "pulmonary trunk," which divides to form the right and left "pulmonary arteries." At the base of this trunk is a "pulmonary semilunar valve" that is made up of three leaflets or cusps.
When the right ventricular muscles relax, blood starts back up the pulmonary trunk, causing the valve to close to prevent the flow from returning into the ventricular chamber.
The pulmonary vein travels parallel to the pulmonary artery as it carries the blood back up to the heart.
www.innerbody.com /tutorial2/t12.html   (121 words)

 Repair of Congenital and Acquired Pulmonary Vein Stenosis -- van Son et al. 60 (1): 144 -- The Annals of Thoracic ...
pulmonary vein stenosis, prompt surgical relief of the stenosis
Acquired pulmonary vein stenosis as a cause of life-threatening pulmonary hypertension
Pulmonary vein stenosis with normal connection: associated cardiac abnormalities and variable outcome
ats.ctsnetjournals.org /cgi/content/abstract/60/1/144   (664 words)

 Atrial Fibrillation - PVA(PVI)
Current Pulmonary Vein Ablation techniques are achieving success rates of 85% in curing Paroxysmal A-Fib with low risk.
During Pulmonary Vein Ablation a soft, thin, flexible tube with an electrode at the tip is inserted through a large vein or artery in your groin and moved into your heart.
This isolates the pulmonary veins from the rest of the heart and prevents any pulses from these veins from getting into the heart.
www.a-fib.com /PVA(PVI).htm   (864 words)

 "Sutureless" Pulmonary Vein Stenosis Repair
The procedure is also helpful in patients with congenital pulmonary vein stenosis and has been used in selected patients on the initial presentation of total anomalous pulmonary venous connection.
Care must be taken to leave the adventitia intact when pulmonary vein incisions are made because the adventitia will contain the pulmonary venous effluent in a “controlled bleed” into the left atrium.
The divided edge of the atrial wall is then sutured to the pericardium (not the pulmonary vein) in a suture line remote from the divided edge of the pulmonary veins using a running fine absorbable suture.
www.ctsnet.org /sections/clinicalresources/congenital/expert_tech-3.html   (1299 words)

 Intrastent sonotherapy in pulmonary vein restenosis: a new treatment for a recalcitrant problem -- McMahon et al. 89 ...
the diameter of the left pulmonary vein from 2 mm to 4.8 mm
Congenital stenosis of the pulmonary veins: failure to modify natural history by intraoperative placement of stents.
Relentless pulmonary vein stenosis after repair of total anomalous pulmonary venous drainage.
heart.bmjjournals.com /cgi/content/full/89/2/e6   (1208 words)

 Atrial Fibrillation: Multi-Detector Row CT of Pulmonary Vein Anatomy prior to Radiofrequency Catheter Ablation--Initial ...
If the distance between this virtual border and the bifurcation of both pulmonary veins (arrows) is 0.5 cm or larger, as in this example, the ostium of both pulmonary veins is a common ostium because both veins enter the border of the left atrium trough a common trunk.
diameter of the pulmonary veins was measured at the ostia, and the
Pulmonary vein morphology in patients with paroxysmal atrial fibrillation initiated by ectopic beats originating from the pulmonary veins: implications for catheter ablation.
radiology.rsnajnls.org /cgi/content/full/234/3/702   (4670 words)

 Pulmonary vein thrombosis after bilobectomy and development of collateral circulation -- Genta et al. 58 (6): 550 -- ...
Pulmonary vein thrombosis after bilobectomy and development of collateral circulation -- Genta et al.
Pulmonary vein thrombosis was suspected, and a transoesophageal
Idiopathic pulmonary vein thrombosis: detection by CT and MR imaging.
thorax.bmjjournals.com /cgi/content/full/58/6/550   (802 words)

 About Pulmonary Vein Stenosis - Pulmonary Vein Stenosis - Clinical Services - Children's Hospital Boston
Pulmonary vein stenosis is a condition in which there is an obstruction (blockage) in the blood vessels that bring oxygen-rich blood from the lungs back to the heart.
When pulmonary vein stenosis occurs in children without congenital heart defects, it occurs in early infancy and usually progresses very rapidly.
Progressive pulmonary vein stenosis is thought to result from the uncontrolled growth of connective tissue cells, which causes the blockage in the pulmonary veins.
www.childrenshospital.org /clinicalservices/Site683/mainpageS683P7.html   (262 words)

 Pulmonary Vein Diameter, Cross-sectional Area, and Shape: CT Analysis -- Kim et al. 235 (1): 43 -- Radiology
CT scans obtained for assessment of the left superior pulmonary vein in a middle-aged woman who was suspected of having pulmonary embolism.
Pulmonary vein isolation for paroxysmal and persistent atrial fibrillation.
Pulmonary vein anatomy in patients undergoing catheter ablation of atrial fibrillation: lessons learned by use of magnetic resonance imaging.
radiology.rsnajnls.org /cgi/content/full/235/1/43   (3958 words)

 ACC: Pulmonary Vein Isolation Promoted As "Cure" For Atrial Fibrillation
Francis Marchlinski of the University of Pennsylvania Health System, Philadelphia, United States, reported that two months after undergoing pulmonary vein isolation for paroxysmal AF, "83 percent of patients were free of AF, with zero pulmonary vein stenosis and no stroke or TIA (transient ischemic attacks)." One patient did experience tamponade.
In the second study, a series of 26 AF patients with impaired left ventricular function underwent focal mapping and ablation of AF at the Cleveland Clinic Foundation, Cleveland, Ohio, and "the cure rate was 73 percent with a mean follow-up of 10 months," said Dr. Nassir F. Marrouche, lead author.
Ninety-eight pulmonary veins were mapped and successfully isolated, he said.
www.docguide.com /dg.nsf/PrintPrint/48429B6FD883241385256B8200735B5A   (636 words)

 eMedicine - Pulmonary Embolism : Article by Craig Feied, MD, FACEP, FAAEM, FACPh   (Site not responding. Last check: 2007-10-12)
Thrombosis in the veins is triggered by venostasis, hypercoagulability, and vessel wall inflammation.
The objective components of the Wells (Canadian Pulmonary Embolism Score) criteria, for example, have been shown to have little effect on the stratification power of the criteria; virtually all of the classification power is associated with a physician's subjective prejudgment of the likelihood of PE.
Pulmonary angiography remains the criterion standard for the diagnosis of PE but is rapidly being replaced by MDCTA, since the latter modality is significantly less invasive, is easier to perform, and offers equal sensitivity and specificity.
www.emedicine.com /EMERG/topic490.htm   (9742 words)

 Partial Pressure of Oxygen Is Lower in the Left Upper Pulmonary Vein Than in the Right in Adults With Atrial Septal ...
Partial Pressure of Oxygen Is Lower in the Left Upper Pulmonary Vein Than in the Right in Adults With Atrial Septal Defect: Difference in PO2 Between the Right and Left Pulmonary Veins -- Iga et al.
in the pulmonary veins at a distance from the cardiac silhouette
and the pulmonary vein in normal lungs obtained at autopsy.
www.chestjournal.org /cgi/content/full/115/3/679   (2101 words)

 Pulmonary Thromboendarterectomy -- Madani and Jamieson 2 (2003): 1205 -- Cardiac Surgery in the Adult
at vein junctions of pelvic, thigh, and calf veins.
The incidence of pulmonary hypertension caused by chronic pulmonary
and correlate poorly with the degree of pulmonary obstruction.
cardiacsurgery.ctsnetbooks.org /cgi/content/full/2/2003/1205?ck=nck   (9221 words)

 Innohep USA - Deep Vein Thrombosis (DVT)/Pulmonary Embolism (PE) & Cancer
According to the American Heart Association, approximately two million Americans develop deep vein thrombosis annually, and an estimated 600,000 of these develop pulmonary embolism, a potentially fatal complication in which the blood clot breaks off and obstructs blood flow to the arteries of the lungs.
Research shows that pulmonary emboli are a major contributory factor in some 10 percent of all hospital deaths.
A population-based perspective of the hospital incidence and case-fatality rates of deep vein thrombosis and pulmonary embolism.
www.innohepusa.com /corporateweb/innohepus/home.nsf/Content/DVTPECancer   (326 words)

 Hilum and airways   (Site not responding. Last check: 2007-10-12)
Inferior pulmonary veins are oriented horizontally and can be traced to right inferior pulmonary vein and subsequently into the lower portion of left atrium.
LUL pulmonary artery cab be traced to its origin from the left main pulmonary artery and lies posterolateral to the left superior pulmonary vein
Branches of pulmonary artery to the lower lobe lie lateral and posterior to the basilar bronchi
www.meddean.luc.edu /lumen/MedEd/MEDICINE/PULMONAR/ct/hilum.htm   (634 words)

 Results in   (Site not responding. Last check: 2007-10-12)
Study objectives: The functional impact of pulmonary vein (PV) stenosis on pulmonary perfusion after radiofrequency ablation (RFA) for atrial fibrillation (AF) has not been systematically evaluated previously.
Therefore, we correlated magnetic resonance (MR) pulmonary perfusion imaging with single-photon emission CT (SPECT) perfusion and with the degree of PV stenosis (PVS) apparent on MR angiography (MRA) after RF ablation.
Methods: Pulmonary perfusion was evaluated using a dynamic contrast-enhanced three-dimensional MR perfusion sequence (1.5 T, 2.5-s temporal resolution, and 0.05 cm spatial resolution), and high-resolution, contrast-enhanced MRA was performed to measure PV diameter.
www.findarticles.com /p/articles/mi_m0984/is_2_126/ai_n6175842   (437 words)

 Pulmonary Vein Stenosis After Catheter Ablation of Atrial Arrhythmias -- Seshadri et al. 105 (21): 2571 -- Circulation   (Site not responding. Last check: 2007-10-12)
Pulmonary Vein Stenosis After Catheter Ablation of Atrial Arrhythmias -- Seshadri et al.
On the pre-angioplasty image (left), the right lower pulmonary vein shows an asymmetric discrete annular narrowing of 60% to 70% (arrow) as the vein joins the left atrium (LA).
After angioplasty (right), there was reduction of the focal stenosis of the right lower pulmonary vein to 20% to 30% (arrow).
circ.ahajournals.org /cgi/content/full/circulationaha;105/21/2571   (631 words)

 Familial Scimitar Syndrome : Three-Dimensional Visualization of Anomalous Pulmonary Vein in Young Sisters -- Ashida et ...   (Site not responding. Last check: 2007-10-12)
by an anomalous connection of the pulmonary vein with the inferior vena
Right, Late phase of pulmonary arteriogram with digital subtraction showing the anomalous pulmonary vein (arrows).
Right, Late phase of pulmonary arteriogram showing the anomalous pulmonary vein (arrows).
circ.ahajournals.org /cgi/content/full/103/25/e126   (444 words)

 Unusual Pulmonary Lesions: Case 3. Pulmonary Vein Leiomyosarcoma Presenting as a Left Atrial Mass -- Laroia et al. 20 ...
Pulmonary Vein Leiomyosarcoma Presenting as a Left Atrial Mass -- Laroia et al.
Gyhra AS, Santander CK, Alarcon EC, et al: Leiomyosarcoma of the pulmonary veins with extension to the left atrium.
Oliai BR, Taxelarr HD, Lloyd RV, et al: Leiomyosarcoma of the pulmonary veins.
www.jco.org /cgi/content/full/20/11/2749   (657 words)

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