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This study aimed to determine the relationship between the frontal QRS-T angle, the severity of the disease, and mortality, calculated with the ECG data taken during admission to the hospital. In this retrospective study, patients hospitalized in intensive care units and regular services with Covid-19 disease at Health Sciences University Mehmet Akif Inan Training and Research Hospital between April-September 2020 were included. Patients who were not given Covid-19 medication except for five days of Hydroxychloroquine (HC) and Azithromycin (AZ) with no cardiac disease history and daily taken ECGs were included in the study. A total of 135 patients were included in this study. While 45.9% of the patients received only HC treatment, 54.1% also received additional AZ treatment. It was observed that the frontal QRS-T angle was significantly longer in intensive care patients and intubated patients (p =<0.001). ROC curve analysis demonstrated that the best cut-off value for predicting mortality was 101.5o. The in-hospital mortality rate was significantly higher in patients with widened frontal QRS-T angle (p = 0.008). QRS widening, QTc prolongation, and QRS-T angle widening were substantially more frequent in intensive care patients (p=0.001, p<0.001, and p<0.001, respectively). Significantly QTc prolongation was observed more frequently in patients hospitalized in intensive care and followed up intubated (p<0.001 and p=0.003, respectively). The most common QTc prolongation time was on the 4th day of treatment in both groups (43.8% and 46.8%). Multivariate logistic regression analysis showed that frontal QRS-T angle ≥ 101.5o (OR: 7.08, 95%CI: 1.17-42.75, P = 0.033) was an independent predictor of mortality. The prolonged frontal QRS-T angle in Covid-19 patients increases the severity of the disease and mortality rates. The frontal QRS-T angle can be used to determine the prognosis of Covid-19 patients due to its advantages, such as easy evaluation and no extra costs. [ABSTRACT FROM AUTHOR]

It is not clear if there is an inaccurate effect of obesity and pneumoperitoneum on non-invasive monitoring parameters. The aim of this study is to determine the effects of CO2 pneumoperitoneum and desufflation on non-invasive monitoring variables between obese and non-obese patients undergoing laparoscopic surgery. Sixty patients were included in the study that underwent laparoscopic cholecystectomy between February 2019 and November 2019. After induction of anaesthesia, systolic and diastolic blood pressures, heart rate, duration of operation and pneumoperitoneum, pleth variability index (PVI) and total hemoglobin (SpHb) data were recorded. The patients were divided into two groups. There was no significant difference between the groups in terms of chronic diseases and duration of operation and pneumoperitoneum. No significant difference was found between the groups in PVI and SpHb values. In comparison of PVI measurement values with T0, a significant difference was found in T3, T4 and T5 in Group 2 (p = 0.010, 0.012 and 0.041, respectively). In comparison of SpHb measurement values with T0, a significant difference was found in T1, T2 and T3 in Group 2 (p = 0.008, 0.010 and 0.037, respectively). In comparison with T5, a significant difference was found in T1, T2 and T3 in Group 2 (p = 0.023, 0.005 and 0.006, respectively). In obese people, pneumoperitoneum can lead to errors in PVI and SpHb monitoring. Although these two parameters are very valuable in intraoperative follow-up, they should be used carefully during laparoscopic procedures in obese patients. If these parameters (PVI and SpHb) are considered to be used in bariatric surgeries, this information should be considered. [ABSTRACT FROM AUTHOR]