To assess and improve the safety and success rate of vascular puncture and catheterization using ultrasound-guided methods.
Investigators hypothesized that （1） various ultrasound-guided methods had different performances of vascular puncture and catheterization, (2) certain risk factors influenced safety and success rate of vascular puncture and catheterization (3) implementation of protocols could improve the performances of ultrasound-guided vascular puncture and catheterization.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Enrollment
134
Use the according methods in dynamic arm descriptions.
Use the according methods in regular-triangle arm descriptions.
Peking Union Medical College Hospital
Beijing, Beijing Municipality, China
Successful rate without extra vascular damage
Percentages of successful catheterization without vascular damage of posterior wall.
Time frame: Through study completion, an average of 1 year.
Successful rate at first attempt.
Percentage of successful catheterization at first attempt without needle withdraw.
Time frame: Through study completion, an average of 1 year.
Time duration of catheterization.
From beginning of needle puncture to finishing or failing catheterization.
Time frame: Through study completion, an average of 1 year.
Relative factors of successful catheterization without posterior wall damage.
Relationship between independent variables (gender, age, BMI, BP, depth and so on) and successful catheterization without posterior wall damage.
Time frame: Through study completion, an average of 1 year.
The effect of depth to the successful catheterization without posterior wall puncture.
The relationships between different depth of vascular anterior wall and successful catheterization without posterior wall puncture.
Time frame: Through study completion, an average of 1 year.
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