Open Heart Surgery In Octogenarian Patients: A Comparison Of Two Eras

Aim: In this study, it was aimed to compare two different periods in terms of surgical results in octogenarian patients who underwent open heart surgery. Material and method: In the present study, 218 patients aged 80 and over who had undergone open heart surgery in our clinic between January 2013 and December 2020 (group 1:115 patients) and between January 2000 and December 2007 (group 2:103 patients) were included and divided into two groups. The study was designed retrospectively, and the operative and postoperative data were statistically compared between the two groups. Results: There was no significant difference between groups in terms of mean age and gender distribution (p>0.05). Coronary artery bypass graft-beating heart prevalence in Group 2 (24.5%) was significantly higher than that in Group 1 (7.9%) (p:0.002;

Does the surgical technique used in the orthotopic heart transplant affect the results regarding the rhythm?

Conclusion: Biatrial surgical technique, donor age and hypertension were determined as significant predictors of temporary pacemaker insertion in the orthotopic heart transplantation. Atrioyentricular block, left bundle branch block, and arrhythmia frequency was significantly less in the bicaval group. In terms of factors affecting morbidity, the bicaval technical results were found superior than biatrial technique. (Anadolu Kardiyol Derg 2012; 12: 255-60

Additional Value of Using Satellite-Based Soil Moisture and Two Sources of Groundwater Data for Hydrological Model Calibration

Although the complexity of physically-based models continues to increase, they still need to be calibrated. In recent years, there has been an increasing interest in using new satellite technologies and products with high resolution in model evaluations and decision-making. The aim of this study is to investigate the value of dierent remote sensing products and groundwater level measurements in the temporal calibration of a well-known hydrologic model i.e., Hydrologiska Bryåns Vattenbalansavdelning (HBV). This has rarely been done for conceptual models, as satellite data are often used in the spatial calibration of the istributed models. Three different soil moisture products from the European Space Agency Climate Change Initiative Soil Measure (ESA CCI SM v04.4), The Advanced Microwave Scanning Radiometer on the Earth Observing System (EOS) Aqua satellite (AMSR-E), soil moisture active passive (SMAP), and total water storage anomalies from Gravity Recovery and Climate Experiment (GRACE) are collected and spatially averaged over the Moselle River Basin in Germany and France. Different combinations of objective functions and search algorithms, all targeting a good fit between observed and simulated streamflow, groundwater and soil moisture, are used to analyze the contribution of each individual source of information. Firstly, the most important parameters are selected using sensitivity analysis, and then these parameters are included in a subsequent model calibration. The results of our multi-objective calibration reveal a substantial contribution of remote sensing products to the lumped model calibration, even if their spatially-distributed information is lost during the spatial aggregation. Inclusion of new observations, such as groundwater levels from wells and remotely sensed soil moisture to the calibration improves the model’s physical behavior, while it keeps a reasonable water balance that is the key objective of every hydrologic model