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Titolo:
Lower limb vein enlargement and spontaneous blood flow echogenicity are normal sonographic findings during pregnancy
Autore:
Rabhi, Y; Charras-Arthapignet, C; Gris, JC; Ayoub, J; Brun, JF; Lopez, FM; Janbon, C; Mares, P; Dauzat, M;
Indirizzi:
Montpellier Nimes Fac Med, Lab Cardiovasc Physiol, F-30907 Nimes, France Montpellier Nimes Fac Med Nimes France F-30907 ol, F-30907 Nimes, France Univ Nimes Hosp, Dept Med Imaging, F-30029 Nimes, France Univ Nimes Hosp Nimes France F-30029 Med Imaging, F-30029 Nimes, France Univ Nimes Hosp, Hematol Lab, F-30029 Nimes, France Univ Nimes Hosp Nimes France F-30029 Hematol Lab, F-30029 Nimes, France Montpellier Univ Hosp, Dept Clin Physiol, F-34295 Montpellier, France Montpellier Univ Hosp Montpellier France F-34295 295 Montpellier, France Montpellier Univ Hosp, Dept Internal Med B, F-34295 Montpellier, France Montpellier Univ Hosp Montpellier France F-34295 295 Montpellier, France Univ Nimes Hosp, Dept Gynecol & Obstet, F-30029 Nimes, France Univ Nimes Hosp Nimes France F-30029 col & Obstet, F-30029 Nimes, France
Titolo Testata:
JOURNAL OF CLINICAL ULTRASOUND
fascicolo: 8, volume: 28, anno: 2000,
pagine: 407 - 413
SICI:
0091-2751(200010)28:8<407:LLVEAS>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPONTANEOUS ECHO CONTRAST; RED-CELL AGGREGATION; VENOUS DISTENSIBILITY; ULTRASOUND; FREQUENCY; PLATELET; DISEASE; SMOKE; RISK;
Keywords:
vein; pregnancy; ultrasonography; blood echogenicity; plethysmography; lower limbs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Dauzat, M Univ Hosp, Vasc Lab, F-30029 Nimes, France Univ Hosp Nimes France F-30029 Vasc Lab, F-30029 Nimes, France
Citazione:
Y. Rabhi et al., "Lower limb vein enlargement and spontaneous blood flow echogenicity are normal sonographic findings during pregnancy", J CLIN ULTR, 28(8), 2000, pp. 407-413

Abstract

Purpose. We studied pregnancy-induced changes in lower limb venous function. Methods. We used plethysmography and sonography to assess the changes in venous wall distensibility, saphenous vein diameters, and spontaneous blood flow echogenicity in the common femoral veins in 190 consecutive women during and after uncomplicated pregnancies (total of 409 examinations). Results. The percentage of women with clinical symptoms and signs of venous insufficiency increased significantly during pregnancy. The mean diameters of the great and small saphenous veins also increased significantly, while occlusive venous plethysmography showed a decrease in parameters indicating vein distensibility. Spontaneous blood flow echogenicity in the common femoral veins was clearly visible or marked in 6% of cases during the first trimester of pregnancy, 63% during the second trimester, and 96% during thethird trimester, versus 6% after delivery (p < 0.0001). The mean hematocrit decreased and the mean fibrinogen concentration increased during pregnancy. Conclusions. The increase in lower limb venous pressure seen during pregnancy leads to venous over-distention and worsens blood stasis. Decreased venous flow velocity and rheological alterations result in increased red cell aggregation, giving rise to spontaneous blood flow echogenicity. Spontaneous blood flow echogenicity is therefore a normal finding during pregnancy and should not be mistaken for venous thrombosis. (C) 2000 John Wiley & Sons,Inc. J Clin Ultrasound 28:407-413, 2000.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 23:08:42