Research on the Application of Blood Collection Through Midline Catheters of Different Lengths

Study Overview
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Brief Summary
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Therefore, in this study, the investigators propose to use a randomized controlled prospective open study on inpatients with difficult blood collection, by comparing the effects of the application of two types of peripheral venous catheters for blood collection via LPC and MC, with a view to improving the success rate of blood collection in difficult peripheral venous blood collection, and providing a theoretical basis for the later application of long peripheral venous catheters and midline catheters; and providing a basis for optimizing the experience of venous blood collection by nurses.

Detailed Description
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Using block randomization, patients were randomized in 1:1:1 blocks into experimental arm 1(Long peripheral venous catheter), experimental arm 2(midline catheter), and control (short peripheral venous catheter) with a block length of 6. Patients have a total of 27 blocks, import data into SPSS23, randomly group by SPSS, generate random numbers, and group according to the size of random numbers in each unit group, the largest in the group is assigned to the experimental group 1, the middle of the group is assigned to the experimental group 2, and the smallest in the group is assigned to the control group. The experimental group1 used the LPC for blood collection, the experimental group 2 used the MC for blood collection,and the control group used the Short PIVC for blood collection.

Official Title
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Research on the Application of Blood Collection Through Midline Catheters of Different Lengths

Conditions
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Catheter Complications

Intervention / Treatment
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* Behavioral: Long peripheral venous catheters for blood collection
* Behavioral: Midline catheter for blood collection
* Behavioral: SPCs for blood collection


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Meet the international diagnostic criteria for metabolic syndrome (such as ATP III criteria or domestic Diabetes Branch of Chinese Medical Association criteria). The estimated treatment time of intravenous infusion is 1-4 weeks, and the nature of the infusion drug meets the indications of LPCs and MCs. Blood samples should be collected more than 3 times during the hospital. Exclusion Criteria: A history of radiotherapy, thrombosis, and trauma at the catheter site. Plan to discharge from the hospital with the tube. Vulnerable groups, including people with mental illness, cognitive impairment, critically ill patients, minors, pregnant women, illiterate, etc.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Midline catheter<br>The test group2 used MC for blood collection. | Behavioral: Midline catheter for blood collection<br>* used MCs for blood collection<br>|
| Experimental: Long peripheral venous catheters<br>In the test 1 group, blood was collected using LPC. | Behavioral: Long peripheral venous catheters for blood collection<br>* used LPC for blood collection<br>|
| Other: short peripheral venous catheters<br>In the control group,blood was collected using SPC. | Behavioral: SPCs for blood collection<br>* used SPCs for blood collection<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Success rate of first blood collection | Number of successful initial venous blood collection cases as a percentage of the total number of cases in this group | during catheter indwelling,an average of 2 weeks | 
| Total success rate of blood collection | Number of patients with successful intravenous blood collection as a proportion of the number of cases in this group | during catheter indwelling,an average of 2 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Catheter-related complication rate | The proportion of patients with complications as a proportion of the total number of cases | during catheter indwelling,an average of 2 weeks | 
| Number of days for catheters to linger | The number of days between catheter insertion and catheter removal | during catheter indwelling,an average of 2 weeks |