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Background: The suitability of transcatheter aortic valve implantation is determined by transthoracic echocardiography, however left-sided cardiac catheterization provides concrete pressure measurements. TAVI in awakened patients allows for simultaneous testing of TTE and LCC under physiologically relevant left ventricular loading conditions. Methods and findings: TAVI was administered in 108 awake patients receiving intra-procedural TTE and LCC between January 1, 2016 and December 31, 2016, based on pre-procedure TTE results. TTE overestimated AS severity in 2 out of 108 patients by a grade of u22651. TTE exceeded AS severity by a score of u22651 in 27 of the 108 patients. Overall, TTE underestimated MSEPG by 8. 9 percent, but by 1. 2 mm Hg. These findings indicate either a continuing role for LCC in the diagnostic evaluation of AS in patients that do not comply with TTE criteria or lowering TTI cutoffs for TAVI because decision-making regarding TAVI is based on TTE results.
Source link: https://doi.org/10.1532/hsf.3139
This paper examines the effects of the addition of a chitin hemostatic patch on arterial hemostasis, bleeding time, and reduced risk of bleeding and hematoma in patients undergoing cardiac catheterization. The results indicated that treating a chitin hemostatic patch could reduce the time to arterial hemostasis in patients who under cardiac catheterization. After adding a chitin hemostatic patch in patients in the experimental group, the bleeding time was not significantly reduced, according to the subgroup report. Conclusions: The results of the meta-analysis revealed that adding a chitin hemostatic patch at the site of arterial puncture in patients undergoing cardiac catheterization dramatically reduced the time to hemostasis, but did not significantly reduce bleeding and hematoma.
Source link: https://doi.org/10.1532/hsf.3997
The authors chronicle the first encounter with a multiple parallel guidewire system for catheterization through a difficult tortuous aortic archway to extracranial vessels. The ZigiWire is a modular guidewire system that connects three small-diameter guidewires that are increasingly advanced in parallel to ensure support-wire availability in parallel. In addition, the growing wire made from smaller wires prevents a u201ckbacku201d force from a single larger guidewire, allowing for stable distal access. This guidewire has enabled them to successfully complete neuroendovascular procedures in patients who were otherwise unsuitable for the procedure due to tortuous vascular access.
Source link: https://doi.org/10.3171/2017.1.focus16494
Here, the authors attempt to demonstrate the reliability of ultrasound-based guidance device that can be built into an existing EVD catheter in order to provide a linear ultrasound trace that guides the user toward the ventricle. METHODS The ultrasound stylet was produced as a thin metal tube with dimensions equivalent to standard catheter stylets and featuring a single-element ceramic ultrasound transducer at the tip. Custom electronics was applied to provide real-time data regarding the porcine ventricle's location relative to the catheter, providing real-time data regarding the ventricular location relative to the catheter. RESULTS A research by porcine ventricular catheterization using the experimental system resulted in a high rate of successful catheter placement after a single pass, despite the small size of pig ventricles and the lack of prior knowledge of porcine ventricular architecture. CONCLUSIONS The authors have argued that the prototype ultrasound stylet could be used to map ventricular access in the porcine brain.
Source link: https://doi.org/10.3171/2015.2.peds14387
Aim and Background: Central venous catheter catheterization placement is a commonly performed procedure in emergency and intensive care units. We wanted to assess real-time ultrasound guided and the more commonly used anatomical landmark procedure for the inserting of internal jugular vein catheters. Patients who need IJV catheterization were prospectively recruited over a period of 1 and half years. Materials and procedure: Patients who require IJV catheterization were prospectively recruited over a period of 1 and half years. Conclusion: deduced by real-time USG findings in this review, decreased number of cannulation attempts, and less complication, according to this uf001nding. tiho guguangular vein catheterization gui This study was published in the journal uf001nding.
Source link: https://doi.org/10.36106/gjra/8701161
Abstract The hierarchical relationship between electrical signals of the brain and heart is not fully understood. After stress, we hypothesized that the complexity of cardiac electrical activity might be used to forecast shifts in encephalic electricity. Most methods for investigating the relationship between the heart rate variability and electroencephalography require a computationally complex mathematical model. Using change-score analysis and generalized additive models, epidemiological, HRV, and EEG parameters of postcatheterization EEG alpha waves were investigated. In conclusion, the delicacy of cardiac electrical signals can be used to predict EEG changes after stress.
Source link: https://doi.org/10.1038/srep13315
We discuss a situation in which the catheterization of the thymic vein was vital for a thymic enlargement in an adrenaline-dependent Cushingu2019s syndrome patient with ACTH-dependent Cushing's syndrome. A chest CT revealed an increase of left thymic lobe, which was previously non-existent. The patient underwent simultaneous and bilateral catheterization of the thymic and inominate veins, demonstrating no ACTH gradient at the site of collection after a negative 111 In-pentetreotide scintigraphy, and no ACTH gradient was recorded. During the differential diagnosis of the thymic enlargement tumor in ACTH-dependent Cushing's syndrome, the ACTH gradient during the catheterization of thymic vein was crucial for determining the thymic enlargement tumor after hypercortisolism resolution, especially in this case, where the ACTH source was occult, avoiding aninvasive surgical procedure for a benign entity with spontaneous resolution.
Source link: https://doi.org/10.1530/eje.1.02154
This research sought to determine the extent and duration of the radial artery dilation following PO-FMD, as well as the time point at which the radial artery diameter was enlarged to the maximum. In both groups, the baseline radial artery diameter was measured on the left wrist with ultrasound in both groups. In the two groups, the baseline radial artery diameter, the maximum radial artery diameter, and the duration of radial artery dilation were recorded. U00b1 11. 69s and 46. 03s, respectively, at a time when the radial artery diameter in the LR group and HR group reached its maximum. The time of radial artery dilation and the percentage change in arterial diameter in HR cohorts was dramatically smaller than that of the LR group. The optimal puncture time point for PO-FMD in the LR group was 26s, while in the HR group, 46s.
Source link: https://doi.org/10.21203/rs.3.rs-2403759/v1
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