الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 141 |  |  |
| | | from | 141 | | |
Abstract
Vascular access involves central and peripheral vein accesses and arterial accesses. Central venous catheterization is widely used in clinical practice for diverse purposes, including hemodialysis for end stage renal failure, invasive hemodynamic monitoring, radiological studies, infusion of drugs that cannot be administered via peripheral vessels, administration of parenteral nutrition, vascular access in patients whose peripheral veins are difficult to be catheterized and for miscellaneous purposes that require access to large caliber vessels.Arterial cannulation is used for invasive arterial pressure monitoring and to ensure access for diagnostic and therapeutic interventions.
The traditional technique relies on the use of anatomical landmarks rather than ultrasound guidance. Even in expert hands, it is associated with a high failure rate and a lot of complications, ranging from mechanical problems to infectious and thrombotic events.
Ultrasound guidance improves the success rate of central venous cannulation from 96% to 100%. This may not seem significant until one considers the improved first attempt success rate, decreased needle advances, decreased time to cannulation and lower rate of complications.
We evaluated the safety and effectiveness of ultrasound guided vascular access in 100 patients who need vascular access for different purposes by measuring the success rate , number of punctures , duration and complications. We found that theres significant increase in success rate and first attempt success , decrease in the duration and complications.
To conclude ultrasound guided vascular access is significantly safe and effective if compared to the traditional technique in other studies.
We suggest using ultrasound to perform vascular access for patients who need venous or arterial access instead of the traditional technique which depends on the anatomical landmarks.