Re: Serious maternal complications in relation to severe pre-eclampsia: a retrospective cohort study of the impact of hospital volume; Severe maternal morbidity requires regionalisation of obstetric critical care; Guilt, blame and litigation: can an overenthusiastic 'safety culture' cause harm?Maternal mortality: the heavy psychological burden on centre obstetricians Sir, Three articles in BJOG attracted our attention. Maternal mortality due to severe pre-eclampsia occurred less frequently in larger-than smaller-delivery-volume hospitals, 1 and its accompanying mini-commentary, 2 which underlines the importance of regionalisation and recommends an anticipatory rather than reactive strategy. Another states that zealous efforts to find a person to blame, an 'overenthusiastic safety culture', may cause harm. 3 In line with these, our concern is the heavy burden on centre obstetricians.Obstetrics is different from other specialties. The abnormally invasive placenta (AIP), which usually requires a difficult caesarean hysterectomy, illustrates this point. The maternal mortality associated with emergent peripartum hysterectomy is reportedly 5.2%, 4 although this refers to emergent surgery. AIP surgery, regardless of whether it is emergent or planned, can cause maternal death, which patients and society do not recognise.Our university hospital patient brochures for pancreaticoduodenectomy and transcatheter repair of atrial septal defect describes 3% and 0.5% 'mortality' associated with the procedures. The first author (S.M.) wonders whether mortality data should be described in an AIP surgery brochure, but this has not been possible for the following reasons.First, in patients with cancer or heart disease, 'no surgery' may be a reasonable option. The treatment mortality rate may be an important factor in decisionmaking, whereas AIP patients cannot choose 'no surgery'.5 Mortality information does not affect their decision. Secondly, 'pancreatic surgery' or 'cardiac catheter intervention' is well recognised as dangerous by patients, family, and society, whereas 'caesarean' or 'hysterectomy' is not. If the possibility of mortality is explained or even suggested, it only causes grave anxiety for this expectant mother, leading to sleepless nights.Thus, obstetricians are currently sandwiched among unavoidable surgery, surgical mortality, and patients'/society's failure to recognise these. From the moment of admission of a patient with AIP, centre obstetricians carry a great psychological burden. No matter how experienced one is with AIP surgery, it is always challenging. Fortunately, the first author (S.M.) has had no experience with maternal death directly associated with AIP surgical procedures. However, maternal death can occur the next time. Even with four decades of experience, the first author still feels the great burden of AIP surgery, let alone other staff. This psychological burden may be a part of our professional responsibility. Every doctor dealing with difficult surgery/procedures, pancreatic surgeons or cardio...