Letter to Editor:

Objectives: to evaluate the effectiveness of uterine tamponade devices for atonic refractory postpartum haemorrhage (PPH) after vaginal birth, and the effect of including uterine tamponade devices in institutional protocols. Search strategy: databases in PubMed, EMBASE, CINAHL, LILACS and POPLINE. Study selection: randomised and non-randomised comparative studies. Outcomes: composite outcome including surgical interventions (artery ligations, uterine compressive sutures or hysterectomy) or maternal death, and hysterectomy. Results: all four included studies were at high risk of bias. The certainty of evidence rated as very low to low. One randomised study measured the effect of the the condom-catheter balloon compared to standard care and found unclear results for the composite outcome (RR 2.33, 95%CI 0.76-7.14) and hysterectomy (RR 4.14, 95%CI 0.48-35.93). Three comparative studies assessed the effect of including UBTs in institutional protocols. A stepped-wedge study suggested an increase in the composite outcome (RR 4.08, 95%CI 1.07-15.58), and unclear results for hysterectomy (RR 4.38, 95% CI 0.47-41.09) with the use of the condom-catheter or surgical glove balloon. One non-randomised study showed unclear effects on the composite outcome (RR 0.33, 95%CI 0.11-1.03) and hysterectomy (RR 0.49, 95%CI 0.04-5.38) after the inclusion of Bakri balloon. The second non-randomized study found unclear effects on the composite outcome (RR 0.95, 95%CI 0.32-2.81) and hysterectomy (RR 1.84, 95%CI 0.44-7.69) after the inclusion of Ebb or Bakri balloon. Conclusions: the effect of uterine tamponade devices for the management of atonic refractory PPH after vaginal delivery is unclear, as is the role of the type of device and the setting.

Aim: To develop clinical algorithms for the assessment and management of slow progress of labour. Population: Low-risk singleton, term, pregnant women in labour. Setting: Institutional births in low- and middle-income countries. Search Strategy: We systematically reviewed the literature on normal labour progression, and guidance on clinical management of abnormally slow progression from 1 December 2015 to 1 December 2020. Case scenarios: We developed two clinical algorithms: one for abnormally slow labour progression and arrest during first and one for second stage. Conclusions: Identifying abnormal progress of labour is often challenging. These algorithms may help to reduce misdiagnosis.

Objectives: to describe available uterine tamponade devices for the management of postpartum haemorrhage, and to evaluate its effectiveness as a treatment of refractory PPH. Search strategy: Databases searched included PubMed, EMBASE, CINAHL, LILACS and POPLINE. Study selection: To describe uterine tamponade devices any type of study was included; only randomised and non-randomised comparative studies were included to assess the effectiveness of uterine tamponade devices. Outcomes: The primary outcomes were: a composite outcome including surgical interventions or maternal death, and hysterectomy. Results: Twenty-four types of tamponade devices were identified. The Bakri and the condom-catheter balloon were the most frequently reported. One randomised controlled trial suggests non-significant increases in the composite outcome (RR 2.33, 95%CI 0.76-7.14) and hysterectomy (RR 4.14, 95%CI 0.48-35.93) associated with the condom-catheter balloon vs. no device. Another RCT suggests a non-significant reduction in the composite outcomes (RR 0.60; 95%CI 0.16-2.31) and hysterectomy (RR=0.5; 95%CI 0.05-5.25) with the Bakri balloon vs the condom-catheter balloon. A stepped-wedge study suggests an increase in the composite outcome (RR 4.08, 95%CI 1.07-15.58), and a non-significant increase in hysterectomies (RR 4.38, 95% CI 0.47-41.09) associated with the introduction of condom-catheter or surgical glove balloon into clinical settings. Conversely, non-randomised studies showed a non-statistically significant reduction (RR=0.61, 95%CI 0.27-1.40) in the composite outcome and no effect on hysterectomy associated with the use of the Bakri balloon. Conclusions: The effect of UBT for the management of atonic refractory PPH after vaginal delivery is unclear, as is the role of the type of device and the setting.