National Women's Annual Clinical Report 2010

11 SEVERE MATERNAL MORBIDITY
This chapter provides data on maternal deaths and severe maternal morbidities among
women giving birth at NW during 2010.
11.1 Maternal Mortality
In 2010 there were no maternal deaths among women who birthed at National Women’s.
11.2 Severe Maternal Morbidity
Specific and complete ascertainment of women diagnosed with one of a set of
predefined rare conditions associated with severe maternal morbidity has been set up in
New Zealand by AMOSS (the Australasian maternity outcomes surveillance system)
under the auspices of the PMMRC (Perinatal and Maternal mortality review committee).
Data collection is undertaken by monthly queries to individual clinicians to identify cases,
supported by hospital discharge coding data.
The current set of reportable conditions includes antenatal pulmonary embolism,
amniotic fluid embolism, eclampsia, peripartum hysterectomy, placenta
accreta/percreta/increta, influenza requiring admission to ICU, and BMI>50. The
conditions collected may vary from year to year. Data collection started in NZ in January
2010.
Table 93: Incidence of AMOSS reportable severe maternal morbidities at NW 2010
Women giving birth at NW 2010
n=7709
Diagnosis n per 1000
Antenatal pulmonary embolism 0
Amniotic fluid embolism 0
Eclampsia 1 0.13
Peripartum hysterectomy 7 0.91
Placenta accreta/percreta/increta 14 1.82
Influenza requiring ICU admission 3 0.39
There were 20 admissions of pregnant or postpartum (within 6 weeks) mothers to
intensive care or cardiac critical care unit in 2010 (2.6/1000 mothers giving birth).
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