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Doppler ultrasound in obstetrics

Danny Tucker 7 Fragen 5,0 (1 Bewertung)

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Fragen in diesem Quiz (7)

  1. 1Doppler ultrasonography has an established role in monitoring of the following pregnancy complications
    1. AIntrauterine fetal growth restriction
    2. BRhesus disease
    3. CTwin-to-twin transfusion syndrome
    4. DGestational diabetes
    5. EFetal macrosomia
  2. 2Which of the following is true regarding use of umbilical artery (UA) doppler in IUGR pregnancies?
    1. AAbnormal UA doppler directly correlates with a lower number of placental arteries per high power field
    2. BAbnormal UA doppler predicts fetal compromise with a lead time of 3 days after diagnosis
    3. CDiagnosis of abnormal UA doppler ultrasound affords time for useful interventions to be instituted to prolong pregnancy
    4. DSerial UA dopplers should be used from 32 weeks in high risk pregnancies
    5. EAbsent end-diastolic flow in the umbilical artery is a trigger for delivery in a fetus <32 weeks
  3. 3There is good RCT evidence for the use of fetal venous dopplers in the management of IUGR
    1. ARichtig
    2. BFalsch
  4. 4Regarding the Middle Cerebral Artery (MCA) doppler in IUGR, which of the following are true?
    1. AMCA doppler assessment is of similar efficacy in both IUGR-affected pregnancies and the prediction of fetal anaemia in Rhesus isoimmunisation
    2. BIn IUGR there is 'brain sparing' effect, leading to an increased diastolic flow, hence reduction in PI.
    3. CThe MCA PI/ UA PI ratio (cerebro-placental ratio) is more sensitive than either measurement in isolation
    4. DMCA doppler is equally useful in both early and late-onset IUGR
  5. 5The role of the Ductus Venosus in IUGR. Select the true answers.
    1. ADV doppler acts as a marker of cardiovascular deterioration
    2. BAbsence or reversal of A-wave in early IUGR is a strong predictor of fetal acidaemia
    3. CThere are clear RCT data and consensus around use of DV and timing of delivery of the IUGR fetus
  6. 6Uterine artery doppler at 20-24 weeks gestation in low risk populations has a high predictive value for IUGR/pre-eclampsia
    1. ARichtig
    2. BFalsch
  7. 7Finally, which of the following are true?
    1. AAortic isthmus doppler abnormalities may precede DV changes, often by one week
    2. BUmbilical vein doppler abnormalities may predict right heart failure and myocardial hypoxia
    3. CMCA PSV can predict the existance of moderate to severe fetal anaemia with a sensitivity of 100% and false positive rate of 12%

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Beschreibung
By Dr Danny Tucker, Director of Obtetrics & Gynaecology, Townsville Hospital, Queensland, Australia. Quiz based upon the following review article: http://bit.ly/dopplerus
Sprache
English
Aufrufe
211
Bewertung
5,0 von 5 · 1 Bewertung
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