Diameters of the Pulmonary Arteries and Veins as an Indicator of Bilateral and Unilateral Pulmonary Blood Flow in Patients With Congenital Heart Disease

Kawahira, Youichi; Kishimoto, Hiroyuki; Kawata, Hiroaki; Ikawa, Seiichiro; Ueda, Hiroyuki; Nakajima, Tohru; Kayatani, Futoshi; Inamura, Noboru; Nakada, Taka‐aki

doi:10.1111/j.1540-8191.1997.tb00136.x

Cited by 16 publications

(16 citation statements)

References 8 publications

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“…While PV diameter measurements are typically reported in the literature (Dill et al, 2003;Kawahira et al, 1997;Lin et al, 2000;Tsao et al, 2001;Wittkampf et al, 2003), our results suggest that these data may be highly variable. The ability to obtain accurate and reproducible measurements of the PV is desirable and to our knowledge has not been previously investigated.…”

Section: Discussioncontrasting

confidence: 54%

“…(Kato et al, 2003;Lin et al, 2000;Moak et al, 2000;Saad et al, 2003;Scanvacca et al, 2000;Wittkampf et al, 2003;Yang et al, 2001) Contrast-enhanced three-dimensional (3D) magnetic resonance angiography (CE-MRA) (Greil et al, 2002;Masui et al, 1991) and computed tomography (Perez-Lugones et al, 2003) readily demonstrate the PV. Although PV diameter is commonly reported (Dill et al, 2003;Kawahira et al, 1997;Lin et al, 2000;Tsao et al, 2001;Wittkampf et al, 2003), there is no standard location or orientation for its measurement, and the variation in diameter measurements has not been determined. In addition, given the asymmetric cross-section of the PV (Wittkampf et al, 2003), the circumference and the cross-sectional area (CSA) may provide more useful anatomic measurements.…”

Section: Introductionmentioning

confidence: 99%

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A Method for the Determination of Proximal Pulmonary Vein Size Using Contrast?Enhanced Magnetic Resonance Angiography

Hauser

Yeon

McClennen

et al. 2004

J Cardiovasc Magn Reson

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Section: Discussioncontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

A Method for the Determination of Proximal Pulmonary Vein Size Using Contrast?Enhanced Magnetic Resonance Angiography

Hauser

Yeon

McClennen

et al. 2004

J Cardiovasc Magn Reson

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“…Consequently, we constructed a model of the most common healthy pulmonary venous geometry, in which the four left and right, superior and inferior pulmonary veins return the oxygenated blood from both lungs into the left atrium (Kato et al , 2003). The dimensions of these veins were obtained from literature (Kawahira et al , 1997; Kim et al , 2005) and adjusted to meet the requirements of the numerical scheme that the distal diameter of each terminal large artery (i.e. the RIA, RTA, LIA and LTA) must be the same as the distal diameter of its matching terminal vein (RSV, RIV, LSV and LIV respectively) (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation of blood flow and pressure drop in the pulmonary arterial and venous circulation

Qureshi

Vaughan

Sainsbury

et al. 2014

Biomech Model Mechanobiol

135

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A novel multiscale mathematical and computational model of the pulmonary circulation is presented and used to analyse both arterial and venous pressure and flow. This work is a major advance over previous studies by Olufsen and coworkers (Ottesen et al., 2003; Olufsen et al., 2012) which only considered the arterial circulation. For the first three generations of vessels within the pulmonary circulation, geometry is specified from patient-specific measurements obtained using magnetic resonance imaging (MRI). Blood flow and pressure in the larger arteries and veins are predicted using a nonlinear, cross-sectional-area-averaged system of equations for a Newtonian fluid in an elastic tube. Inflow into the main pulmonary artery is obtained from MRI measurements, while pressure entering the left atrium from the main pulmonary vein is kept constant at the normal mean value of 2 mmHg. Each terminal vessel in the network of ‘large’ arteries is connected to its corresponding terminal vein via a network of vessels representing the vascular bed of smaller arteries and veins. We develop and implement an algorithm to calculate the admittance of each vascular bed, using bifurcating structured trees and recursion. The structured-tree models take into account the geometry and material properties of the ‘smaller’ arteries and veins of radii ≥ 50µm. We study the effects on flow and pressure associated with three classes of pulmonary hypertension expressed via stiffening of larger and smaller vessels, and vascular rarefaction. The results of simulating these pathological conditions are in agreement with clinical observations, showing that the model has potential for assisting with diagnosis and treatment of circulatory diseases within the lung.

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“…Em alguns estudos com pacientes portadores de defeitos cardíacos congênitos, o diâmetro da APD manteve-se maior ao da APE, sem alterações das proporções normais (25,26) . Neste trabalho os pacientes apresentaram os diâmetros I, II e III da APD maiores em relação aos diâmetros I, II, III da APE, tanto no período pré-operatório quanto no pós-operatório.…”

Section: Análise Dos Diâmetrosunclassified

“…NAKATA et al (18) introduziram o IAP, medindo a AP na região imediatamente antes de sua bifurcação, para a análise das variações ocorridas no seu desenvolvimento. Desde então o índice de Nakata é amplamente utilizado (25,(27)(28)(29) .…”

Section: Análise Dos íNdices Totais E Parciaisunclassified

Estudo angiográfico comparativo da artéria pulmonar no pré e pós-operatório de pacientes submetidos a operação de derivação cavopulmonar bidirecional

Westphal¹,

Maluf²,

Silva³

et al. 2001

Rev Bras Cir Cardiovasc

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Estudo angiográfico comparativo da artéria pulmonar no pré e pós-operatório de pacientes submetidos a operação de derivação cavopulmonar bidirecional. Casuística e Métodos: Foram incluídos 18 pacientes submetidos a DCPB, no período de março de 1990 a janeiro de 1997, que possuíam exames cineangiográficos disponíveis no período pré e pós-operatório. As medidas da AP direita e esquerda foram realizadas em três locais: na origem, imediatamente antes da bifurcação e no início da artéria do lobo inferior. Em seguida, os diâmetros de cada local foram indexados à superfície corpórea ou ao diâmetro da aorta, medido na altura do diafragma. Os dados angiográficos e oximétricos foram submetidos a análise estatística.Resultados: Quando analisados os diâmetros absolutos observou-se que a maioria sofreu aumento não-significante, no período pós-operatório, ao passo que o diâmetro II da AP esquerda apresentou diminuição. Os índices totais I e III apresentaram diminuição significante, no período pós-operatório, e no índice total II a redução não foi significante. A análise da variável seguimento pós-operatório demonstrou redução significativa dos índices totais nos pacientes com seguimento pós-operatório inferior a 23,6 meses. A presença de fluxo sangüíneo adicional determinou o aumento dos índices AP direita II e III, e pequena redução nos outros índices. As medidas da AP indexadas pelo diâmetro da aorta revelaram comportamento semelhante à indexação pela superfície corpórea. Na ausência de circulação venosa colateral (CVC) observou-se aumento significante da saturação de O 2, por outro lado, a sua presença determinou um aumento não-significante, durante o período de observação.

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Diameters of the Pulmonary Arteries and Veins as an Indicator of Bilateral and Unilateral Pulmonary Blood Flow in Patients With Congenital Heart Disease

Abstract: Our data suggest that the size of PVs in patients with congenital heart disease may be more useful than the size of PAs to indicate bilateral and unilateral PBF than the size of PAs. Differences in PV area of each lung may be a suitable indicator of discrepancy in blood flow to each lung.

Cited by 16 publications

References 8 publications

A Method for the Determination of Proximal Pulmonary Vein Size Using Contrast?Enhanced Magnetic Resonance Angiography

A Method for the Determination of Proximal Pulmonary Vein Size Using Contrast?Enhanced Magnetic Resonance Angiography

Numerical simulation of blood flow and pressure drop in the pulmonary arterial and venous circulation

Estudo angiográfico comparativo da artéria pulmonar no pré e pós-operatório de pacientes submetidos a operação de derivação cavopulmonar bidirecional

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