May 20, th European Board and College of Obstetrics and Gynecology

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Presentation transcript:

May 20, 2017 25th European Board and College of Obstetrics and Gynecology The effectiveness of recombinant human soluble thrombomodulin for obstetric disseminated intravascular coagulation The Department of Obstetrics, Perinatal Medical Center TOYOTA Memorial Hospital Shinji Monoe, Yu Yaegashi, Kazuki Shimizu, Takuji Ueno, Kazutaka Nakao, Takuma Yamada, Takehiko Takeda,Masato Yoshihara, Sho Tano Kaname Uno, Masato Yoshihara, Michinori Mayama, Mayu Ukai, Teppei Suzuki, Toko Harata, Yasuyuki Kishigami, Tai C. Izawa Hidenori Oguchi Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Introduction Obstetric disorders are a major cause of disseminated intravascular coagulation (DIC), which increases maternal and fetal morbidity and mortality. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Pathophysiology of DIC Obstetric Underlying disorders Severe postpartum hemorrhage Placental Abruption Preeclampsia Amniotic fluid embolism Acute Fatty Liver Dead fetus syndrome Sepsis… Activating Intrinsic/extrinsic pathways rhTM DIC Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Introduction It has been reported that rhTM potentially reduces the morbidity and mortality in patients with sepsis-induced DIC. On the other hand, the potency of rhTM in obstetric DIC has not yet been established. We performed this study to examine whether administration of rhTM was an effective treatment for DIC induced by one or more underlying obstetric disorders. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Materials and methods We conducted a single-center, retrospective cohort study between January 2007 and February 2015 using the records of the Department of Obstetrics at the Perinatal Medical Center of TOYOTA Memorial Hospital, Aichi, Japan. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Materials and methods Patients with known or suspected obstetric DIC were eligible. DIC was diagnosed on the basis of DIC score of the Japanese Association for Acute Medicine (JAAM) or the obstetric DIC score approved by the Japanese Society of Obstetrics and Gynecology. Either or both scores was fulfilled by all patients. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Materials and methods Platelet count, fibrinogen level, and prothrombin time–international normalized ratio (PT–INR) were recorded on the day in which the patient was diagnosed with obstetric DIC and almost two days after diagnosis. Within 4 days after the diagnosis of obstetric DIC, we also compiled data for the occurrences of bleeding events and DIC-related organ damage and failure (heart, lung, kidney, and liver). Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Materials and methods We used a propensity score (PS) method estimated by fitting a multivariate logistic regression model to the original population of treated and untreated patients. We adjusted the cohorts for the probability of treatment with the inverse probability weighting of treatment (IPWT) approach. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Baseline characteristics of the patients Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Baseline characteristics of the patients Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Standardized difference Standardized differences, imbalances of independent variables between non-adjusted and adjusted cohorts, were reduced. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Laboratory parameters Compared with the control group, platelet counts in the rhTM group were significantly increased from the baseline value at the post-treatment state. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Laboratory parameters Fibrinogen levels, mg/dL PT–INR * † † † † * Fibrinogen levels, and PT–INR were significantly improved after the initiation of rhTM when compared with the control group. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Organ failures related to DIC The rhTM treatment group was associated with a lower tendency for all types of organ damage and failure. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Discussion rhTM was associated with significant improvements in platelet counts, fibrinogen levels, and PT–INR when compared with the control group. Relatively lower ORs for DIC-related organ damage and failures in the rhTM group also indicate the potential efficacy of rhTM in obstetric DIC. To our knowledge, this is the first retrospective cohort study to provide evidence of the efficacy of rhTM in DIC caused by underlying obstetric disorders. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Conclusion In conclusion, rhTM administration was associated with clinical and laboratory improvement in patients with DIC caused by underlying obstetric conditions. Thus, rhTM can be considered a suitable candidate for the treatment of obstetric DIC. Further clinical research is needed to clarify the optimal application of rhTM in each of the causative obstetric disorders. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

 Introduction Recombinant human soluble thrombomodulin (rhTM) is a novel anti-coagulation agent composed of the active, extracellular domain of thrombomodulin (TM) that regulates the imbalanced coagulation system by reducing excessive activation of thrombin. Additionally, rhTM has antifibrinolytic and anti-inflammatory properties, which are supposed to mitigate some of the catastrophic conditions of DIC. Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Pharmacological action of rhTM Anti-inflammatory effect Antifibrinolytic effect Protein S Activated protein C Protein C Anticoagulant effect rhTM Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital

Result Blood transfusion The PC transfusion volume was significantly lower in the adjusted rhTM group Department of Obstetrics, Perinatal Medical Center, TOYOTA Memorial Hospital