Ultraschall in der Medizin : Organ der Deutschen Gesellschaft für Ultraschall in der Medizin, [der] Österreichischen Gesellschaft für Ultraschall in der Medizin, [der] Schweizerischen Gesellschaft für Ultraschall in Medizin und Biologie
-
Randomized Controlled Trial Multicenter Study Comparative Study Clinical Trial
[Ultrasonography guided versus anatomically oriented puncture of the internal jugular vein for central venous catheterization].
Ultrasonography guided puncture (UGP) of the internal jugular vein (IJV) carried out by an expert is considered to be superior to the anatomically orientated puncture (AOP). Whether routine use of the UGP lowered the number of unsuccessful punctures and complications was unknown. Both puncture techniques were compared in a random study. ⋯ UGP is superior to AOP of the IJV also in routine use. It should be used more frequently in elective situations.
-
Intrarenal arterial Doppler sonography is used in noninvasive monitoring of transplant kidneys with controversial results. With the application of the method on renal transplants with stable function normal values should be generated and pitfalls should be identified. METHOD AND STUDY SUBJECTS: In a prospective study doppler findings in 61 renal transplant patients with stable graft function were compared with measurements in native kidneys of 60 healthy controls. In all kidneys duplex Doppler studies of arcuate/interlobar intrarenal arteries were performed and both the resistance index (RI) as well as the pulsatility index (PI) was determined. ⋯ The intrarenal arterial Doppler findings dependent on various extrarenal factors. Using arterial Doppler sonography to evaluate transplant kidneys it is mandatory to take into account factors such as recipient's age and hemodynamic situation. External pressure with the transducer on the graft must be avoided. Once these factors were considered the intrarenal arterial Doppler sonography of kidney transplant is a valuable diagnostic tool.