Table 2 ICD-10 diagnoses for pregnancy-related aeromedical retrievals* by the Royal Flying Doctor Service according to the operation area, 2015–2019 (N = 4438)
ICD-10 diagnoses* | N (%) | Operation area | p-value** | |||
|---|---|---|---|---|---|---|
Central (NT – SA) | Queensland (QLD) | South East (NSW) | Western (WA) | |||
% | % | % | % | |||
Pregnancy with abortive outcome (O00-O08) | 388 (8.7) | 7.8 | 9.3 | 5.4 | 9.6 | 0.044 |
 Ectopic pregnancy (O00) | 240 (5.4) | 4.1 | 7.0 | 3.7 | 5.4 |  |
 Complications following ectopic and molar pregnancy (O08) | 9 (0.2) | 0.4 | 0.4 | 0.0 | 0.0 |  |
 Others | 139 (3.1) | 3.4 | 2.0 | 1.7 | 4.2 |  |
Supervision of high-risk pregnancy O09 | 27 (0.6) | 0.0 | 2.0 | 0.0 | 0.0 | < 0.001 |
Oedema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16) | 421 (9.5) | 10.0 | 8.1 | 8.9 | 10.5 | 0.15 |
 Pre-existing hypertension (O10-O11) | 25 (0.6) | 1.2 | 0.7 | 0.9 | 0.0 |  |
 Gestational hypertension and preeclampsia (O13-O14) | 356 (8.0) | 7.6 | 6.2 | 7.4 | 9.9 |  |
 Eclampsia (O15) | 20 (0.5) | 0.6 | 0.7 | 0.3 | 0.2 |  |
 Others | 20 (0.5) | 0.5 | 0.5 | 0.3 | 0.4 |  |
Other maternal disorders predominantly related to pregnancy (O20-O29) | 240 (5.4) | 8.7 | 5.4 | 6.3 | 2.9 | < 0.001 |
 Haemorrhage in early pregnancy (O20) | 84 (1.9) | 2.8 | 1.8 | 2.0 | 1.4 |  |
 Diabetes mellitus in pregnancy (O24) | 34 (0.8) | 1.8 | 0.6 | 0.3 | 0.3 |  |
 Other maternal care for other conditions related to pregnancy (O26) | 56 (1.3) | 2.1 | 1.3 | 2.6 | 0.4 |  |
 Abnormal findings on antenatal screening (O28) | 34 (0.8) | 0.9 | 1.6 | 0.0 | 0.2 |  |
 Others | 32 (0.7) | 1.2 | 0.2 | 1.4 | 0.7 |  |
Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) | 1303 (29.4) | 22.4 | 29.2 | 32.3 | 33.7 | < 0.001 |
 Premature rupture of membranes (O42) | 663 (14.9) | 10.8 | 14.4 | 15.7 | 18.1 |  |
 Antepartum haemorrhage (O46) | 278 (6.3) | 3.6 | 6.0 | 6.3 | 8.3 |  |
 Others | 362 (8.2) | 7.9 | 8.8 | 10.3 | 7.3 |  |
Complications of labour and delivery (O60-O75) | 1843 (41.5) | 42.3 | 40.3 | 41.7 | 42.0 | 0.72 |
 Threatened preterm labour and delivery (O60) | 1616 (36.4) | 34.3 | 34.8 | 34.9 | 39.5 |  |
 Others | 227 (5.1) | 8.0 | 5.4 | 6.9 | 2.5 |  |
Normal term delivery (O80-O84) | 115 (2.6) | 5.0 | 3.4 | 3.4 | 0.1 | < 0.001 |
Complications predominantly related to the puerperium (O85-O92) | 49 (1.1) | 1.6 | 1.0 | 1.1 | 0.9 | 0.31 |
Other obstetric conditions, not elsewhere classified (O94-O99) | 52 (1.1) | 2.2 | 1.3 | 0.9 | 0.4 | < 0.001 |
Total retrievals with ICD-10 diagnoses – N | 4438 | 1125 | 1349 | 350 | 1614 |  |