Purpose The purpose of our study was to determine the usability of lung ultrasonography (LUS) in the diagnosis of COVID-19, and to match the morphological features of lesions detected on computed tomography (CT) with the findings observed on LUS. Methods Sixty patients with COVID-19 were included in this prospective study. Patients were examined by radiology and anesthesia clinic specialists for a visual CT score. A LUS 12-zone ultrasonography protocol was applied by the investigator blinded to the CT and PCR test results. The characteristics of abnormal findings and the relationship of lesions to the pleura and the distance to the pleura were investigated. Results Forty-five males and 25 females evaluated within the scope of the study had an average age of 61.2 ± 15.3 years. The total CT score was calculated as 14.3 ± 5.3, and the LUS score was found to be 19.9 ± 7.6. There was a statistically significant positive correlation between the measured LUS and CT scores (r = 0.857, p < 0.001). The mean distance of these lesions to the pleura was 5.2 ± 1.76 cm. LUS findings in 51 areas corresponded to non-pleural lesions on CT. There was a negative correlation between the measured distance to the pleura and the LUS scores (p < 0.001, r = − 0.708). Conclusion The results of this study showed that the correlation between CT and LUS findings may be used in the diagnosis of COVID-19 pneumonia, although there are some limitations. ClinicalTrials.gov identifier: NCT04719234.

The purpose of our study it was aimed to determine the effectiveness of two different Lung ultrasonography (LUS) methods that can be used in the diagnosis of COVID-19 and to investigate its correlation with computed tomography (CT). Methods:In this prospective ,randomized and single blind study 60 patients with COVID-19 were included the study.Patients were randomized to either Group 12 zone LUS (n:30) or Group 14 zone LUS (n:30) .The evaluation parameters were to determine the correlation between LUS and Thorax-CT scores. The secondary outcome measure examined the characteristic features of the findings in Thorax-CT and LUS. Results:The study was completed with a total of 59 patients .A moderate and high degree correlation was found between the CT and LUS scores calculated according to the total score in the 12-zone and 14-zone study groups. There was no statistically significant difference between the groups in terms of lesion types detected in patients on LUS and CT (p<0.05).Left lung lower lobe CT scores in the 14-zone study group were statistically significantly lower than the 12-zone group (p= 0.019).Left lower lobe CT LUS score correlation was highly correlated in 14 regions examined group (p <0.001/r: 0.954). Conclusions:The results of our study indicated that the two different LUS examination methods performed on the different patients had similar findings in terms of diagnosis and their correlation with the results of the CT.

Background: The quadratus lumborum block (QLB) has recently been used frequently for postoperative analgesia after abdominal surgery. The aim of this study was to investigate the effect of pressure changes between the middle thoracolumbar fascia layers to which the anterior QLB (aQLB) is applied at the level of the sensory block. Methods: A total of 67 patients planned to undergo laparoscopic cholecystectomy were evaluated in the context of this prospective study. Bilateral aQLBs were administered to all patients, and a peripheral nerve block catheter was placed between the psoas and quadratus lumborum muscles. The correlation of interfascial pressures (IFPs) during block application, 30 min intraoperatively, and 30 min postoperatively with the sensory block level was determined as the primary outcome measure. Secondary outcome measures were the sensory block levels 30 min after block application and 30 min postoperatively; visual analog scale scores 30 min and 6, 12, and 24 h postoperatively; and 24 h tramadol consumption.Results: The preoperatively and intraoperatively measured IFPs differed significantly between the right and left sides (P < 0.05). The preoperative and postoperative block levels also differed significantly between the right and left sides (P < 0.05). The preoperative and postoperative block levels and preoperatively measured IFP showed a weakly negative correlation (right: r = 0.374; left: r = 0.470).Conclusions: The results of this study show that pressure changes between the fasciae may be effective in aQLB application.