T Kiserud

Summary

Country: Norway

Publications

  1. ncbi Hemodynamics of the ductus venosus
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    Eur J Obstet Gynecol Reprod Biol 84:139-47. 1999
  2. ncbi The fetal circulation
    Torvid Kiserud
    University of Bergen, Department of Obstetrics and Gynecology, Bergen, Norway
    Prenat Diagn 24:1049-59. 2004
  3. ncbi The ductus venosus
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    Semin Perinatol 25:11-20. 2001
  4. ncbi Ultrasound assessment of the fetal foramen ovale
    T Kiserud
    Unit of Fetal Medicine, Department of Obstetrics and Gynecology, Bergen University Hospital, Bergen, Norway
    Ultrasound Obstet Gynecol 17:119-24. 2001
  5. ncbi [Fetal circulation--from passive knowledge to current hemodynamics]
    T Kiserud
    Seksjon for fostermedisin Ultralydlaboratoriet Kvinneklinikken Haukeland Sykehus Postboks 1 5021 Bergen
    Tidsskr Nor Laegeforen 121:313-7. 2001
  6. ncbi Effect of NO, phenylephrine, and hypoxemia on ductus venosus diameter in fetal sheep
    T Kiserud
    Department of Obstetrics and Gynaecology, Royal Free and University College Medical School, London WC1E 6HX, United Kingdom
    Am J Physiol Heart Circ Physiol 279:H1166-71. 2000
  7. ncbi Fetal venous circulation--an update on hemodynamics
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    J Perinat Med 28:90-6. 2000
  8. ncbi [Assessment of gestational age using ultrasound--can the method be improved?]
    T Kiserud
    Kvinneklinikken Haukeland Sykehus, Bergen
    Tidsskr Nor Laegeforen 119:4331-4. 1999
  9. ncbi Venous pulsation in the fetal left portal branch: the effect of pulse and flow direction
    T Kiserud
    Department of Obstetrics and Gynecology, University of Bergen, Norway
    Ultrasound Obstet Gynecol 21:359-64. 2003
  10. ncbi Fetal cardiac output, distribution to the placenta and impact of placental compromise
    T Kiserud
    Department of Clinical Medicine, Section of Obstetrics and Gynaecology, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 28:126-36. 2006

Detail Information

Publications34

  1. ncbi Hemodynamics of the ductus venosus
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    Eur J Obstet Gynecol Reprod Biol 84:139-47. 1999
    ..Occurrence of umbilical venous pulsation, an important diagnostic sign, is also dependent upon the size and compliance of the umbilical vein...
  2. ncbi The fetal circulation
    Torvid Kiserud
    University of Bergen, Department of Obstetrics and Gynecology, Bergen, Norway
    Prenat Diagn 24:1049-59. 2004
    ....
  3. ncbi The ductus venosus
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    Semin Perinatol 25:11-20. 2001
    ..These waves, reflecting cardiac function, are substantially influenced by the local variation of impedance and compliance...
  4. ncbi Ultrasound assessment of the fetal foramen ovale
    T Kiserud
    Unit of Fetal Medicine, Department of Obstetrics and Gynecology, Bergen University Hospital, Bergen, Norway
    Ultrasound Obstet Gynecol 17:119-24. 2001
    ....
  5. ncbi [Fetal circulation--from passive knowledge to current hemodynamics]
    T Kiserud
    Seksjon for fostermedisin Ultralydlaboratoriet Kvinneklinikken Haukeland Sykehus Postboks 1 5021 Bergen
    Tidsskr Nor Laegeforen 121:313-7. 2001
    ..The aim of the present review is to focus at the traditional knowledge of foetal circulation, which has recently been reassessed and expanded to serve our new patient, the human foetus...
  6. ncbi Effect of NO, phenylephrine, and hypoxemia on ductus venosus diameter in fetal sheep
    T Kiserud
    Department of Obstetrics and Gynaecology, Royal Free and University College Medical School, London WC1E 6HX, United Kingdom
    Am J Physiol Heart Circ Physiol 279:H1166-71. 2000
    ..We conclude that the DV inlet is tonically constricted, because nitric oxide dilates it but an alpha(1)-adrenergic agonist does not potentiate constriction. Hypoxemia causes a marked distension of the entire DV...
  7. ncbi Fetal venous circulation--an update on hemodynamics
    T Kiserud
    Department of Obstetrics and Gynecology, Bergen University Hospital, Norway
    J Perinat Med 28:90-6. 2000
    ..Particularly the substantial shift in impedance at the ductus venosus-umbilical vein junction causes wave reflection and reduced transmission of waves, the result being diminished or absent pulsation in the umbilical vein...
  8. ncbi [Assessment of gestational age using ultrasound--can the method be improved?]
    T Kiserud
    Kvinneklinikken Haukeland Sykehus, Bergen
    Tidsskr Nor Laegeforen 119:4331-4. 1999
    ..Introducing new charts based on a different population is not a good option. New charts based on a Norwegian population are needed...
  9. ncbi Venous pulsation in the fetal left portal branch: the effect of pulse and flow direction
    T Kiserud
    Department of Obstetrics and Gynecology, University of Bergen, Norway
    Ultrasound Obstet Gynecol 21:359-64. 2003
    ..To determine whether the waveform in the left portal branch is reciprocal to the waveform found in the ductus venosus and umbilical vein due to difference in pulse direction compared to flow...
  10. ncbi Fetal cardiac output, distribution to the placenta and impact of placental compromise
    T Kiserud
    Department of Clinical Medicine, Section of Obstetrics and Gynaecology, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 28:126-36. 2006
    ..Our aim was to determine the normal distribution of fetal cardiac output to the placenta during the second half of pregnancy, and to assess the changes imposed by growth restriction with various degrees of placental compromise...
  11. ncbi Fetal celiac and splenic artery flow velocity and pulsatility index: longitudinal reference ranges and evidence for vasodilation at a low portocaval pressure gradient
    C Ebbing
    Department of Obstetrics and Gynecology, Haukeland University Hospital, Norway
    Ultrasound Obstet Gynecol 32:663-72. 2008
    ....
  12. ncbi Longitudinal reference ranges for ductus venosus flow velocities and waveform indices
    J Kessler
    Department of Clinical Medicine, Section of Obstetrics and Gynaecology, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 28:890-8. 2006
    ..We aimed to establish longitudinal reference ranges for ductus venosus flow velocities and waveform indices and to provide the necessary terms for calculating conditional reference ranges for serial measurements...
  13. ncbi Ductus venosus shunting in growth-restricted fetuses and the effect of umbilical circulatory compromise
    T Kiserud
    Department of Clinical Medicine, Section of Obstetrics and Gynaecology, University of Bergen, Norway
    Ultrasound Obstet Gynecol 28:143-9. 2006
    ..To determine the degree of ductus venosus (DV) shunting in fetuses with intrauterine growth restriction (IUGR) and the effect of various degrees of umbilical circulatory compromise...
  14. ncbi Reference ranges for serial measurements of blood velocity and pulsatility index at the intra-abdominal portion, and fetal and placental ends of the umbilical artery
    G Acharya
    Department of Obstetrics and Gynecology, University Hospital of Northern Norway, Tromsø, Norway
    Ultrasound Obstet Gynecol 26:162-9. 2005
    ..To construct reference ranges for serial measurements of umbilical artery (UA) blood flow velocity and pulsatility index (PI) at standardized insonation sites during the second half of pregnancy...
  15. ncbi The fetal portal vein: normal blood flow development during the second half of human pregnancy
    J Kessler
    Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, Bergen, Norway
    Ultrasound Obstet Gynecol 30:52-60. 2007
    ..We aimed to establish a method for measuring blood flow in the fetal portal vein and to produce longitudinal reference ranges for diameter, blood flow velocities and volume blood flow during the second half of pregnancy...
  16. ncbi Middle cerebral artery blood flow velocities and pulsatility index and the cerebroplacental pulsatility ratio: longitudinal reference ranges and terms for serial measurements
    C Ebbing
    Department of Clinical Medicine, University of Bergen, Norway
    Ultrasound Obstet Gynecol 30:287-96. 2007
    ....
  17. ncbi Circulatory responses to maternal hyperoxaemia and hypoxaemia assessed non-invasively in fetal sheep at 0.3-0.5 gestation in acute experiments
    T Kiserud
    Department of Obstetrics and Gynaecology, Royal Free and University College Medical School, London, UK
    BJOG 108:359-64. 2001
    ....
  18. ncbi The left portal vein as an indicator of watershed in the fetal circulation: development during the second half of pregnancy and a suggested method of evaluation
    J Kessler
    Department of Clinical Medicine, Section for Obstetrics and Gynecology, University of Bergen, University of Bergen and the Norwegian Institute of Public Health, Bergen, Norway
    Ultrasound Obstet Gynecol 30:757-64. 2007
    ..Our aim was to study the left portal vein of uncompromised human pregnancies and establish reference ranges...
  19. ncbi The development of high venous velocity at the fetal umbilical ring during gestational weeks 11-19
    S M Skulstad
    Department of Obstetrics and Gynaecology, Bergen University Hospital, Norway
    BJOG 108:248-53. 2001
    ..If acceleration of blood velocity at the umbilical ring is a sign of a narrow inlet, it seems that a progressive tightening occurs during the second trimester...
  20. ncbi Foramen ovale changes in growth-restricted fetuses
    T Kiserud
    Institute of Clinical and Molecular Medicine, Division of Obstetrics and Gynecology, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 24:141-6. 2004
    ..Based on the hypothesis that the FO is expanded to permit more flow, the aim of this study was to determine the size of the FO in growth-restricted human fetuses...
  21. ncbi Effect of umbilical ring constriction on Wharton's jelly
    S M Skulstad
    Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway
    Ultrasound Obstet Gynecol 28:692-8. 2006
    ..The turgor of Wharton's jelly depends on osmotic and hydrostatic pressures. We tested the hypothesis that umbilical ring constriction has an impact on umbilical venous hemodynamics and thus on the volume of Wharton's jelly...
  22. ncbi Fetal hemodynamic development in macrosomic growth
    C Ebbing
    Department of Obstetrics and Gynecology, Haukeland University Hospital, Bergen, Norway and Department of Clinical Medicine, University of Bergen, Norway
    Ultrasound Obstet Gynecol 38:303-8. 2011
    ..To determine the venous and arterial hemodynamics underlying macrosomic fetal growth...
  23. ncbi Umbilical vein constriction at the umbilical ring: a longitudinal study
    G Acharya
    Department of Obstetrics and Gynecology, University Hospital of Northern Norway, N 9038 Tromsø, Norway
    Ultrasound Obstet Gynecol 28:150-5. 2006
    ..It has been suggested that constriction of the umbilical vein (UV) at the umbilical ring has hemodynamic effects. We aimed to determine the occurrence and extent of such constriction in serial observations...
  24. ncbi Doppler-derived umbilical artery absolute velocities and their relationship to fetoplacental volume blood flow: a longitudinal study
    G Acharya
    Department of Obstetrics and Gynecology, University Hospital of Northern Norway, Tromsø, Norway
    Ultrasound Obstet Gynecol 25:444-53. 2005
    ....
  25. ncbi Hemodynamics of fetal breathing movements: the inferior vena cava
    M K Nyberg
    Department of Clinical Medicine, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 38:658-64. 2011
    ....
  26. ncbi Fetal breathing is associated with increased umbilical blood flow
    M K Nyberg
    Department of Clinical Medicine, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 36:718-23. 2010
    ..We therefore tested this hypothesis in the present study...
  27. ncbi Ultrasound safety in early pregnancy: reduced energy setting does not compromise obstetric Doppler measurements
    R K Sande
    Clinical Fetal Physiology Research Group, Department of Clinical Medicine, University of Bergen, Bergen, Norway
    Ultrasound Obstet Gynecol 39:438-43. 2012
    ..We hypothesized that first-trimester Doppler ultrasonography can be carried out at lower output energies than the currently advocated limits without compromising clinically important information...
  28. ncbi Development of the maternal anal canal during pregnancy and the postpartum period: a longitudinal and functional ultrasound study
    I P Olsen
    Department of Obstetrics and Gynecology, Hammerfest Hospital, Hammerfest, Norway
    Ultrasound Obstet Gynecol 39:690-7. 2012
    ..We aimed to study the position and volume of the anal canal, during and after pregnancy, in women without previous delivery...
  29. ncbi The effect of vascular constriction on umbilical venous pulsation
    S M Skulstad
    Department of Obstetrics and Gynecology, University of Bergen and Haukeland University Hospital, Bergen, Norway
    Ultrasound Obstet Gynecol 23:126-30. 2004
    ..Mathematical modeling suggests that vascular compliance is a determinant for pulsation, and we tested this by studying velocity pulsation at three sites on the umbilical vein...
  30. ncbi Blood flow in the foetal superior vena cava and the effect of foetal breathing movements
    M K Nyberg
    Department of Clinical Medicine, University of Bergen, Bergen, Norway
    Early Hum Dev 88:165-70. 2012
    ..Data on the human foetus is scarce. Here we present reference values for the blood flow during the second half of pregnancy, and test the hypothesis that foetal breathing movements (FBM) enhance this flow...
  31. ncbi Preterm elective caesarean section and early enteral feeding in gastroschisis
    I Reigstad
    Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, Norway
    Acta Paediatr 100:71-4. 2011
    ..To evaluate the effect of elective caesarean section (CS) before term and early enteral nutrition on length of parenteral nutrition and hospital stay in infants with gastroschisis...
  32. ncbi Transvaginal three-dimensional ultrasound: a method of studying anal anatomy and function
    I P Olsen
    Department of Obstetrics and Gynecology, Hammerfest Hospital, Hammerfest, Norway
    Ultrasound Obstet Gynecol 37:353-60. 2011
    ....
  33. ncbi A randomized, controlled trial comparing effect of oral misoprostol and intravenous syntocinon on intra-operative blood loss during cesarean section
    G Acharya
    Department of Obstetrics and Gynecology, Princess Alexandra Hospital, Harlow, Essex, United Kingdom
    Acta Obstet Gynecol Scand 80:245-50. 2001
    ..CONCLUSION: Oral misoprostol appears to be safe and as effective as intravenous syntocinon in reduction of intra-operative blood loss during elective cesarean section under regional anesthesia and merits further investigation...
  34. ncbi Physiology of the fetal circulation
    Torvid Kiserud
    Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Bergen, and Fetal Medicine Unit, Department of Obstetrics and Gynaecology, Haukeland University Hospital, Bergen, Norway
    Semin Fetal Neonatal Med 10:493-503. 2005
    ..Some of these aspects have become part of the clinical physiology of today with consequences for surveillance and treatment...