Uses of FloSeal© in obstetric hemorrhage: Case series and literature review

Effectiveness of a thrombin-gelatin flowable for treating severe liver bleeding: an experimental study

BACKGROUND

Current scientific evidence has pointed out the relevance of hemostatic products for improving clinical outcomes in liver trauma, including increased survival rates and reductions in bleeding-related complications. The purpose of this study was to compare the use of the gelatin-thrombin flowable (Flowable) versus the standard technique of Packing in a new experimental liver injury model.

METHODS

Twenty-four swine were prospectively randomized to receive either Flowable or standard packing technique. We used a novel severe liver injury model, in which the middle and left suprahepatic veins were selectively injured, causing an exsanguinating hemorrhage. The main outcome measure was the percentage of lost blood volume.

RESULTS

The median total percentage of total blood volume per animal lost, from injury to minute 120, was significantly lower in the Flowable group (15.2%; interquartile range: 10.7-46.7%) than in the Packing group (64.9%; Interquartile range: 53.4-73.0%) (Hodges-Lehmann median difference: 41.1%; 95% CI: 18.9-58.0%, p = 0.0034). The 24-hour survival rate was significantly higher in the Flowable group (87.0%) than in the Packing group (0.0%) (Hazard ratio (HR) 0.08; 95% confidence interval 0.102 to 0.27; p < 0.0001). Mean-arterial pressure was significantly lower at minute 60 and 120 in the Flowable group than in the packing group (p = 0.0258 and p = 0.0272, respectively). At minute 120, hematocrit was higher in the Flowable than in the packing group (Hodges-Lehmann median difference: 5.5%; 95%CI: 1.0 to11.0, p = 0.0267). Finally, the overall-surgical-procedure was significantly shorter with Flowable than with Packing (Hodges-Lehmann median difference: 39.5 s, 95% CI: 25.0 to 54.0 s, p = 0.0004).

CONCLUSIONS

The use of the Flowable was more effective in achieving hemostasis, reducing blood loss, and improving survival rates than standard packing in a severe porcine-liver bleeding model.

Optimal approach for management of postpartum vulva hematoma: Report of three cases

OBJECTIVE

Vulvar hematomas though common in obstetrical practice can rapidly evolve into a life-threatening condition if not managed appropriately. Depending on clinical status and medical facility, conservative management, surgical debridement, or vessel-occlusion strategy can be considered.

CASE REPORT

Case 1 was a 28 year-old pregnant woman. Increasing hematoma over 12 cm in size was noted on postpartum Day 2. Debridement and arterial embolization were done. Case 2 was a referred woman at age of 30 who delivered at a local obstetric clinic. Debridement was performed successfully. Case 3 was a 23 year-old woman with postpartum bilateral hematoma. Drop in hemoglobin level prompted the medical team to transfer and airlift the patient for arterial embolization and subsequent vulva debridement.

CONCLUSION

Optimal management of hematoma is dependent on maternal hemodynamic condition, bleeding status, and availability of interventional radiology.

Ovarian reserve and recurrence 1 year post-operatively after using haemostatic sealant and bipolar diathermy for haemostasis during laparoscopic ovarian cystectomy

RESEARCH QUESTION

Is there a difference in the ovarian reserve 1 year post-operatively in those who used a haemostatic sealant or bipolar diathermy for haemostasis during laparoscopic ovarian cystectomy for ovarian endometriomas?

DESIGN

This was an extended follow-up observational study of a previous randomized controlled trial where women aged 18 to 40 years with 3-8 cm unilateral or bilateral endometriomas were randomized to receive haemostasis by a haemostatic sealant or bipolar diathermy following ovarian cystectomy. The primary outcome was the ovarian reserve as assessed by antral follicle count (AFC) 1 year post-operatively. Secondary outcomes included the recurrence rate of ovarian endometrioma, the change in anti-Müllerian hormone (AMH) and FSH concentrations, and reproductive outcomes.

RESULTS

The significant increase in AFC at 3 months after initial surgery (P = 0.025) in the haemostatic sealant group compared with the diathermy group was sustained at 1 year (P = 0.024) but there was no difference in AMH or FSH concentrations between the groups throughout the follow-up period. The recurrence rate in the FloSeal group was 7.7% (n = 3/39) compared with 22.2% (n = 8/36) in the diathermy group (P = 0.060). The recurrence rate in women who had bilateral lesions was significantly higher than those with unilateral lesions (risk ratio 5.33, interquartile range 1.55-18.38). No difference in reproductive outcomes was found between the two groups.

CONCLUSIONS

Applying haemostatic sealant after laparoscopic cystectomy of ovarian endometriomas produces a significantly greater improvement in AFC, which was apparent at 3-month follow-up, and was sustained at 1-year follow-up without compromising the recurrence rate.

Perioperative prophylactic internal iliac artery balloon occlusion in the prevention of postpartum hemorrhage in placenta previa: a randomized controlled trial

BACKGROUND

Placenta previa remains one of the major causes of massive postpartum hemorrhage and maternal mortality worldwide.

OBJECTIVE

To determine whether internal iliac artery balloon occlusion during cesarean delivery for placenta previa could reduce postpartum hemorrhage and other maternal complications.

STUDY DESIGN

This was a prospective randomized controlled trial conducted at a tertiary university obstetric unit in Hong Kong. Pregnant women who were diagnosed to have placenta previa at 34 weeks (defined as lower placenta edge within 2 cm from the internal os) and required cesarean delivery were invited to participate. Eligible pregnant women were randomized into internal iliac artery balloon occlusion (Occlusion) group or standard management (Control) group. Those randomized to the Occlusion group had internal iliac artery balloon catheter placement performed before cesarean delivery and then balloon inflation after delivery of the baby. The primary outcome was the reduction of postpartum hemorrhage in those with internal iliac artery balloon occlusion. Secondary outcome measures included hemoglobin drop after delivery; amount of blood product transfusion; incidence of hysterectomy; maternal complications including renal failure, ischemic liver, disseminated intravascular coagulation, and adult respiratory distress syndrome; length of stay in hospital; admission to intensive care unit; and maternal death.

RESULTS

Between May 2016 and September 2018, 40 women were randomized (20 in each group). Demographic and obstetric characteristics were similar between the 2 groups. In the Occlusion group, 3 women did not receive the scheduled procedure, as it was preceded by antepartum hemorrhage that required emergency cesarean delivery, and 1 woman had repeated scan at 36 weeks showing the placental edge was slightly more than 2 cm from the internal os. Intention-to-treat analysis found no significant differences between the Occlusion and the Control groups regarding to the median intraoperative blood loss (1451 [1024-2388] mL vs 1454 [888-2300] mL; P = .945), the median length of surgery (49 [30-62] min vs 37 [30-51] min; P = .204), or the need for blood transfusion during operation (57.9% vs 50.0%; P = .621). None of the patients had rebleeding after operation, complication related to internal iliac artery procedure, or any other maternal complications. Reanalyzing the data using on-treatment approach showed the same results.

CONCLUSION

The use of prophylactic internal iliac artery balloon occlusion in placenta previa patients undergoing cesarean delivery did not reduce postpartum hemorrhage or have any effect on maternal or neonatal morbidity.

Abdomino-pelvic packing revisited: An often forgotten technique for managing intractable venous obstetric haemorrhage

BACKGROUND

Surgical packing should not be seen as a 'bail out' for the less skilled obstetrician who is unable to control obstetric haemorrhage using conventional techniques. Rather, this should be considered in cases of coagulopathy or where haemorrhage persists from raw surfaces, venous plexuses and inaccessible areas.

MATERIALS AND METHODS

Data from seven women who underwent abdomino-pelvic packing for intractable postpartum bleeding were collected. The primary outcome was success of intra-abdominal packing and secondary outcomes included estimated blood loss, units transfused, length of stay and postoperative complications.

RESULTS

All seven women (median age 39 years, interquartile range (IQR) 3.25) had caesarean section deliveries with median estimated blood loss of 5521.4 mL (IQR 4475) and median of 6.9 (IQR 4.75) units transfused. Abdomino-pelvic packing was successful in all cases including in three women who had continued bleeding after peripartum hysterectomy. In the remaining four, bleeding stopped with packing, enabling the uterus to be conserved. The median number of packs inserted was 6.1 (IQR 4.2) and median shock index at time of decision to pack was 0.98 (IQR 0.13). The median pack dwell time was 30.8 h (IQR 24), while median length of stay following removal was 48 h (IQR 2.14).

CONCLUSION

Intractable bleeding in these seven cases was successfully controlled by abdomino-pelvic packing, allowing supportive correction of hypothermia, tissue acidosis, coagulopathy and hypovolemia. The technique of packing is an essential skill in managing massive obstetric haemorrhage, in addition to uterine balloon tamponade, compression sutures and peripartum hysterectomy.