Fundal Height Measurement
Transcription
Fundal Height Measurement
Introduce Gardosi Charts Improve your SGA detection and reduce IU Fetal Death rates Dr Alphonse Roex, MD PhD Senior Consultant O&G, Northern Adelaide Local Hospital Network Senior Lecturer University of Adelaide Port Augusta Sat 21 June 2014 What would you prefer? Key question: is fetus too small and not growing to its genetic potential - and at risk? Baby scale: ‘the gold standard’ Just by looking IUGR obvious ‘wasting’ Antenatal care Is fetus growing at a normal rate = according to its genetic potential? • How to estimate fetal growth in a low risk (GP shared care) population? • The fetus is ‘hidden’ • Different methods used 1. Clinical ‘laying on hands abdomen’ 2. Fundal Height (FH) measurement tape What should method should we use? Case • Primigravida presents at 36+ weeks • Uneventful pregnancy Obstetric examination: • Fetus: longitudinal lie, cephalic presentation • FHR: 145 bpm • Fundal Height: 35.5 cm What is your opinion regarding fetal growth? Fundal Height Measurement Fundal Height measurement: current SA guideline Are you a follower? ‘Record measurement’ • What is your next step? Single FH measurement approach “The fetus is most likely AGA if FH = Dates +/-2 cm” Antenatal detection rates of SGA fetus (25-30%) FH Chart SA hand held record Who does actually plot FH in chart? Our case 36 weeks: serial plot population based chart What is your view now about fetal growth? Our case: serial FH plot customised chart What is your view about fetal growth now? The crux Compare the actual FH slope with the expected FH slope (print) Comparing slopes Example Customised FH Chart FUNDAL HEIGHT CM GESTATION WKS ULTRASOUND EST. FETAL WEIGHT Just one case report ! • Show me higher quality evidence please! Evidence 1. One cohort trial comparing laying on hands with plotting on customised chart (level III) 2. One cohort trial comparing non plotting with plotting on customised chart (level III) 3. No randomised controlled trials (Level II) Serial plotting FH on Gardosi chart 1. West Midlands UK 1999 • Improved detection of SGA fetus 29.2% vs 47.9% (OR 2.2; 95% CI 1.1-4.5; p 0.03) Gardosi J and Francis A. BJOG 1999;106(4):309-17 2. Adelaide Lyell McEwin and Modbury hospitals 2012 • Improved detection rate 24.8% vs 50.6% (OR 3.1; CI 1.7-5.5; P<0.001 ) Roex et al Aust N Z J Obstet Gynaecol 2012; 52:78-82. ‘Fetal GROW’ guideline NALHN ANC visit > 24 wks PLOT FH in Gardosi Chart FH slope less than expected? US Fetal growth Assess US & Plot EFW in Gardosi Chart EFW>P10 & US findings Back to routine care and FH plotting US EFW <P10 URGENT REFERRAL OBSTETRICAL REVIEW Example Gardosi Chart -1 Example Gardosi Chart 2 Question • You have requested and US scan Fetal Growth for a healthy para 1 • Uneventful pregnancy so far • US report: Estimated Fetal Weight is 2600 grams at a gestational age of 37+0 • How would you manage? 1. Pakistani lady: 160cm, 49 kg US at 37+0 wks: EFW of 2500 g Fetus AGA 2. European lady: 177cm, 78 kg US at 37 wks: same EFW of 2500g Fetus SGA or IUGR? The crux stillbirth rates • What has happened in Prof Gardosi’s health regions were customised charts were first introduced? Yearly stillbirth rates in the three regions with high uptake of GROW training and protocols (‘high uptake’) vs the rest (‘low uptake’), 2008-2012 Gardosi J1, Giddings S, Clifford S, Wood L, Francis A. Association between reduced stillbirth rates in England and regional uptake of accreditation training in customised fetal growth assessment. BMJ Open. 2013 Dec 17;3(12):e003942. doi: 10.1136/bmjopen-2013-003942. West Midlands 2011: est. 78 fewer stillbirth Conclusion Fundal Height=Gest Age ±2 Conclusion Antenatal Detection SGA • In a low risk population serial plotting of the Fundal Height on a customised Gardosi chart combined with using the ‘GROW guideline’ is the preferred method, until proven otherwise • Training of all staff paramount • Happy to provide you with URL and instruction to upload on your computer for free. Prof Jason Gardosi • Need www connection, windows computer and printer • Just email to me: alphonse.roex@health.sa.gov.au Questions Ron Mueck Background article • Intrauterine growth restriction: new concepts in antenatal surveillance, diagnosis and management Frances Figueras and Jason Gardosi AJOG 2011:288-296 Non plotting of FH measurements Questions? Guideline SGA/IUGR FH slope less than expected If <36 weeks: US Fetal growth If >36 weeks: Consider Induction of Labour Plot EFW in Gardosi Chart EFW <P10 REFERRAL OBSTETRICAL REVIEW HC/AC, AFI Umb. art. Doppler SGA or IUGR? • • • Serial US fetal Growth AFI, Doppler Increased surveillance Admit, IOL / LSCS?
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