RESUMEN
Background: Central venous catheter (CVC) placement is a frequently performed procedure in the emergency department (ED). We aim to compare two different ultrasound (US)-guided techniques, the short-axis (SAX) approach and the oblique axis (OAX) approach for the insertion of internal jugular vein (IJV) catheters in an ED setting. Methods: This prospective, observational study was conducted in the ED of a single tertiary care teaching hospital on patients requiring IJV cannulation. CVC placement was done using both the SAX and OAX approaches as per the ED physician's discretion. Outcome measures included acute complications, successful insertion of an IJV catheter, number of attempts, and access times. The Chi-square test was used to compare the study variables (acute complications, number of cannulation attempts, and successful cannulation) between the two approaches. Mann-Whitney U-test was applied to compare the mean differences of flash time and cannulation time. Results: Sixty patients were enrolled, of which 30 underwent IJV cannulation by the SAX technique and 30 by the OAX technique. We noted a total of 22 acute complications, 56.7% in the SAX group and 16.7% in the OAX group. A significant incidence of posterior venous wall puncture was noted in the SAX group (50.0%). No significant statistical differences were noted on analysis of other outcome measures. Conclusion: The OAX approach is a useful alternative technique to IJV cannulation in the ED setting. Further multicentric studies in this domain will be required to consider this technique as the primary approach to US-guided IJV cannulation in the ED setting.
RESUMEN
BACKGROUND AND OBJECTIVES: Central venous catheter placement is a frequently performed procedure in emergency medicine as well as critical care unit. We aimed to compare real-time ultrasonography (USG)-guided and the traditional anatomical landmark (AL) technique for the insertion of internal jugular vein (IJV) catheters in an emergency department (ED) setting. MATERIALS AND METHODS: Patients requiring IJV catheterization were prospectively recruited over a period of 1 year at a single center. Cannulation was done either by the AL or USG technique, according to ED physician's discretion. A preset pro forma was completed for each central line placed. Variables were compared using the independent t-test, Fisher's exact test, and the nonparametric Mann-Whitney U-test. RESULTS AND DISCUSSION: Seventy patients were enrolled, of which 35 patients underwent IJV cannulation by USG-guided technique (USG group) and 35 patients by the AL technique (AL group). There were a 100% success rate (35/35) for cannulation in the USG group and a 91.4% success rate (32/35) in the AL group. The catheter was placed on the first attempt in 17 (48.6%) patients in the AL group and 32 (91.4%) patients in the USG group. In th AL group, there were three failed cannulation attempts in comparison to the USG group. The mean start to flash time for the AL technique was 16.59 s (±10.67) and 4.86 s (±2.18) in the USG group. The mean cannulation time was 305.88 s (±66.84) in the AL group and 293.03 s (±71.15) in the USG group. A total of seven acute complications were noted, of which 2 (5.7%) in the USG group and 5 (14.3%) in the AL group. CONCLUSION: The real-time USG guided technique significantly reduces the number of attempts to cannulate, has a higher first-pass success rate, a quicker flash time, and fewer complications when compared to the AL technique. In EDs equipped with USG, insertion of IJV catheters under real-time USG guidance should become the standard of care.
RESUMEN
BACKGROUND AND OBJECTIVES: Over the past few years, ultrasonography is increasingly being used to confirm the correct placement of endotracheal tube (ETT). In our study, we aimed to compare it with the traditional clinical methods and the gold standard quantitative waveform capnography. Two primary outcomes were measured in our study. First was the sensitivity and specificity of ultrasonography against the other two methods to confirm endotracheal intubation. The second primary outcome assessed was the time taken for each method to confirm tube placement in an emergency setting. METHODS: This is a single-centered, prospective cohort study conducted in an emergency department of a tertiary care hospital. We included 100 patients with indication of emergency intubation by convenient sampling. The intubation was performed as per standard hospital protocol. As part of the study protocol, ultrasonography was used to identify ETT placement simultaneously with the intubation procedure along with quantitative waveform capnography (end-tidal carbon dioxide) and clinical methods. Confirmation of tube placement and time taken for the same were noted by three separate health-care staffs. RESULTS AND DISCUSSION: Out of the 100 intubation attempts, five (5%) had esophageal intubations. The sensitivity and specificity of diagnosis using ultrasonography were 97.89% and 100%, respectively. This was statistically comparable with the other two modalities. The time taken to confirm tube placement with ultrasonography was 8.27 ± 1.54 s compared to waveform capnography and clinical methods which were 18.06 ± 2.58 and 20.72 ± 3.21 s, respectively. The time taken by ultrasonography was significantly less. CONCLUSIONS: Ultrasonography confirmed tube placement with comparable sensitivity and specificity to quantitative waveform capnography and clinical methods. But then, it yielded results considerably faster than the other two modalities.