Evaluation of blood transfusion rate in obstetric patients.

OBJECTIVES: The aim of this study was to analyse the obstetric patients who underwent transfusion in the gynecology and obstetrics clinic. MATERIAL AND METHODS: Obstetric patients who underwent a blood transfusion in the peripartum period were included in the study. A total of 213 patients who needed blood transfusion were identified. Patients' age, gravida, parity, gestational week, delivery types, blood transfusion indication and time, transfusion rate, blood products used, number of transfusions, peripartum hysterectomy status, neonatal APGAR scores and hemoglobin (Hb), hematocrit (Hct), red blood cell (RBC), platelet (Plt) values which counted before and after transfusion were recorded by scanning patient files from the hospital registry system. RESULTS: The overall blood transfusion rate of the patients who gave birth in our clinic was 2.51%. Uterine atony (50.7%) and chronic anemia (32.9%) were found as the most frequent indications of blood transfusion in the patients included in the study. Antenatal mean Hb of all transfusion patients was 9.8; postpartum mean Hb was 8.2. Pre-transfusion mean Hb, RBC, Hct, Plt values calculated as 7, 3.9, 30.3, 245.2, respectively; post-transfusion mean Hb, RBC, Hct, Plt values were 9, 3.52, 27.5, 215.1, respectively. CONCLUSIONS: Due to blood replacement, supply difficulties and transfusion complications, the profit-loss relationship should be individualized and clearly demonstrated before it is applied to the patient. In unpredictable obstetric situations that cause bleeding, staying up to date on current guidelines on pharmacological, hematological and surgical interventions and having an active blood transfusion center in the healthcare provider is very important in reducing maternal mortality and morbidity rates.

Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite.

In this study, a combination of reverse microemulsion and hydrothermal techniques were used to synthesize HA. A hydrothermal method was used to synthesize HA/TiO2/CNT nanocomposite powders. Cold and hot isostatic pressing techniques were used to fabricate tablet-shaped samples. To investigate the biocompatibility and tribo-mechanical properties of HA/TiO2 and HA/TiO2/CNTs, four samples were prepared with different percentages of CNTs, namely, HA/TiO2 (S0), HA/TiO2/CNT (S1.0), HA/TiO2/CNT (S2.0), and HA/TiO2/CNT (S3.0). The microstructure and morphology of the HA/TiO2/CNTs were characterized by transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Hardness test results show that S3.0 displayed the highest surface hardness (285 HV) compared to other samples. The wear rate of HA/TiO2/CNT with the highest CNT content showed a decrease compared with those of the other samples. The results from nanoindentation tests showed that Young's modulus of the S3.0 sample was 58.1% greater than that of the S0 sample. Furthermore, the human MDA-MB-231 cell line demonstrated good binding to the surface of the samples in the in-vitro biocompatibility evaluation of the HA/TiO2/CNT composites.