Cardiac Index in Term Pregnant Women in the Sitting, Lateral, and Supine Positions

Abstract

Positioning for neuraxial anesthesia may influence maternal hemodynamic variables. We found no difference in healthy fetal blood flow indices among positions, suggesting that these changes are not clinically significant. This study provides new physiological information on the changes that occur in a group in whom it has not been practical to study previously. Further study is necessary to determine whether these changes are significant in the presence of neuraxial anesthesia or in the high-risk parturient.

Haemodynamic effects from aortocaval compression at different angles of lateral tilt in non-labouring term pregnant women

“…28 29 In this study, we used the suprasternal Doppler technique which uses continuous-wave ultrasound to measure blood flow across the ascending aorta to estimate CO. Recent reports including our own laboratory animal study have validated the accuracy of its measurement of cardiac function, 30 -32 and its ability to detect differences in CO in parturients at different positions for regional anaesthesia 14 and i.v. fluid preload.…”

Management of Pregnancy in Patients With Complex Congenital Heart Disease: A Scientific Statement for Healthcare Professionals From the American Heart Association

“…[24][25][26][27][28][29][30][31][32][33] Maternal cardiac output increases 30% to 50% in a singleton pregnancy, with an additional 10% to 20% increment in a twin pregnancy. [34][35][36][37] Maternal posture can significantly affect cardiac output, especially after 20 weeks' gestation when the gravid uterus compresses the vena cava and pelvic veins.…”

“…Third Trimester (28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42) Weeks) The frequency of cardiac evaluation in late pregnancy must be individualized. Once the peak hemodynamic load of pregnancy is reached, normal symptoms of pregnancy (edema, dyspnea on exertion) may worsen, so patients must be monitored closely to distinguish such symptoms and signs of normal pregnancy from those that may reflect hemodynamic compromise.…”

Effect of the Position on Hemodynamic Parameters in Elective Cesarean Sections with Spinal Anesthesia: A Retrospective Clinical Trial

“…Gebelere sezaryen ve normal doğum için uygulanacak anestezi ve analjezi girişimleri sırasında oluşabilecek pozisyonel değişimin hemodinamiye etkilerini inceleyen çalışmalar yapılmıştır. Anestezi kliniğinde yapılan prospektif gözlemsel bir çalışmada yan oturur ve supin ve yan pozisyonlarda maternal değerlerde farklar saptanırken fetal etkiler üzerinde anlamlı fark görülmemiştir (25). Bizim çalışmamızda diğer çalışmalara benzer olarak 133 hastanın dosyasında elde ettiğimiz verilere göre grupların hemodinamik parametreleri üçüncü, altıncı, dokuzuncu, 12. dk'larda ve olgu boyunca kaydedilen SAB, DAB ve OAB değerleri tüm gruplarda giriş değerlerine göre düşüş olduğunu kaydedildi.…”