A Multicentre Pilot Study of Midline Catheter's Tip at a Different Position in Antimicrobial Therapy

Study Overview
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Brief Summary
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The research protocol was based on assigning patients to three different catheter tip groups and then observing the relationship between the tip and catheter-related complications when infusing antimicrobial agents.

Detailed Description
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A prospective case-control observation study method was adopted. The investigators of each center included patients who met the inclusion and exclusion criteria and were fully informed about the content of the study, possible benefits, and risks. After obtaining informed consent, the patients were included in the method of continuous sampling and convenient sampling. According to the method of random control, the patients were grouped. In the control group, the length of catheter insertion is measured from the pre-puncture point to the shoulder or armpit. In experimental group 1, the catheter insertion length is measured from the pre-puncture point to the midpoint of the clavicle, and in the experimental group, 2 catheter insertion length is measured from the pre-puncture point to the sternoclavicular joint. With a single-blind design, patients do not know the enrollment situation. The catheter was inserted by a full-time specialist nurse of intravenous therapy under ultrasound guidance combined with the modified Seedinger technique. The catheter was inserted according to the length of different measurement methods in different groups. After the catheter was inserted, an X-ray examination was performed to determine the catheter tip position again. Data collection and follow-up observation will be conducted by researchers who have been uniformly trained. Record the baseline data of the patients in the group before catheterization, record the insertion status during catheterization, record the patient's catheter use and catheter sealing frequency every day during catheter placement, and evaluate catheter function and complications until extubation daily.

Official Title
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Midline Catheter Tip Position and Catheter-Related Complications in Antimicrobial Therapy- A Multi-centre Randomized Controlled Trial

Conditions
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Infection

Intervention / Treatment
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* Device: Shu Bei Kang (China) Midline Catheters


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Expected intravenous infusion time over 1 week In line with the indications for the use of medium-length catheters More than 18 years old Full consciousness Signed the study informed consent Exclusion Criteria: Source of infection at the catheter insertion site History of radiation therapy, history of thrombosis, history of trauma or vascular surgery at the site of catheterization Treatment requires input of irritating or hyperosmolar solutions Patients who need to be discharged with a catheter

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: The catheter tip was placed in the subclavian vein.<br>The pre-placement catheter length measured through the body surface was greater than the actual length. Therefore, 2 cm was subtracted from the pre-puncture point to the ipsilateral sternoclavicular joint to calculate the effective catheter pre-placement length. | Device: Shu Bei Kang (China) Midline Catheters<br>* The procedures ① evaluation and selection of blood vessels: select the puncture vein in the middle of the patient's upper arm, ② Skin disinfection and towel laying: take the supine position, extend the upper limb to be punctured 45   90 °, disinfect the pre punctured upper limb with 75% alcohol and 5% povidone iodine. ③ Puncture vein: tie a tourniquet to fill the vein. Before puncture, use 0.2   0.4 ml of 2% lidocaine for local anesthesia. Under the guidance of ultrasound, use the puncture needle in the improved sedinger assembly for puncture. After successful puncture, insert the guide wire. ④ Delivery and confirmation of catheter position: after successful puncture, insert the dilator catheter sheath assembly, withdraw the setinger guide wire, deliver the catheter, after catheter placement, flush and seal the catheter with normal saline, and fix the catheter with sterile dressing.<br>|
| Experimental: The tip of the catheter was placed in the axillary vein of the chest wall.<br>The pre-placement length of the catheter was measured by subtracting 3-4 cm from the distance between the puncture point and ipsilateral midclavicular line. This adjustment was intended to prevent the catheter tip from entering the subclavian vein. | Device: Shu Bei Kang (China) Midline Catheters<br>* The procedures ① evaluation and selection of blood vessels: select the puncture vein in the middle of the patient's upper arm, ② Skin disinfection and towel laying: take the supine position, extend the upper limb to be punctured 45   90 °, disinfect the pre punctured upper limb with 75% alcohol and 5% povidone iodine. ③ Puncture vein: tie a tourniquet to fill the vein. Before puncture, use 0.2   0.4 ml of 2% lidocaine for local anesthesia. Under the guidance of ultrasound, use the puncture needle in the improved sedinger assembly for puncture. After successful puncture, insert the guide wire. ④ Delivery and confirmation of catheter position: after successful puncture, insert the dilator catheter sheath assembly, withdraw the setinger guide wire, deliver the catheter, after catheter placement, flush and seal the catheter with normal saline, and fix the catheter with sterile dressing.<br>|
| Experimental: the catheter tip was located distal to the axillary vein.<br>The measurement method of catheter pre-placement length was as follows: in cases where the catheter was punctured from the basilic and brachial veins, the distance from the pre-puncture point to the intermuscular sulcus of the ipsilateral deltoid muscle and pectoralis major muscle was measured (not surpassing the intermuscular sulcus and not reaching the axilla); however, the distance from the pre-puncture point to the ipsilateral sub shoulder or axilla was measured. | Device: Shu Bei Kang (China) Midline Catheters<br>* The procedures ① evaluation and selection of blood vessels: select the puncture vein in the middle of the patient's upper arm, ② Skin disinfection and towel laying: take the supine position, extend the upper limb to be punctured 45   90 °, disinfect the pre punctured upper limb with 75% alcohol and 5% povidone iodine. ③ Puncture vein: tie a tourniquet to fill the vein. Before puncture, use 0.2   0.4 ml of 2% lidocaine for local anesthesia. Under the guidance of ultrasound, use the puncture needle in the improved sedinger assembly for puncture. After successful puncture, insert the guide wire. ④ Delivery and confirmation of catheter position: after successful puncture, insert the dilator catheter sheath assembly, withdraw the setinger guide wire, deliver the catheter, after catheter placement, flush and seal the catheter with normal saline, and fix the catheter with sterile dressing.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rate of Phlebitis | Prolonged veins appear red, swollen, hot, and painful, with severe cord-like changes and indurations when touching. Mechanical phlebitis, infectious phlebitis, and thrombophlebitis are collected as phlebitis data | through study completion, an average of 4 weeks | 
| Rate of Catheter-related thrombosis | The PICC-related thrombosis in this study refers only to symptomatic thrombi, excluding asymptomatic thrombi. Catheter-related venous thrombosis was diagnosed by color Doppler ultrasound examination when the clinical manifestations were related symptoms such as swelling and pain in the upper arm of the catheterization side. | through study completion, an average of 4 weeks | 
| Rate of Occlusion | According to the degree, it is divided into complete occlusion and incomplete occlusion. When there is resistance or difficulty in flushing the tube, poor blood withdrawal or even no blood return can indicate that the catheter is incompletely occlusion; if it is difficult to flush the tube and draw blood, it can indicate that the catheter is completely occlusion. | through study completion, an average of 4 weeks | 
| Rate of Catheter-Related Infection | Including local infection of the puncture site and catheter-related blood stream infection (Catheter-Related Blood stream Infection, CRBSI). Local infection refers to redness, swelling and pain around the puncture point, or even pus; Catheter-associated bloodstream infection: refers to patients with indwelling catheters who develop bacteremia and draw blood cultures through peripheral veins for at least one positive result, accompanied by fever (> 380C), chills, or hypotension. Other clear sources of bloodstream infection. | through study completion, an average of 4 weeks | 
| Rate of Bleeding | Bloody fluid still leaks out of catheter puncture 48 hours after catheter insertion | through study completion, an average of 4 weeks | 
| Rate of Dislodgment | The catheter slipped more than 3cm above the exposed length of the first tube placement | through study completion, an average of 4 weeks | 
| Rate of exudation | There is a slight yellow or clear liquid leakage from the catheter puncture site | through study completion, an average of 4 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dwell time | Time from tube insertion to extubation, in days | through study completion, an average of 4 weeks | 
| Endometrial conditions | Ultrasound examination of the vascular intima before catheterization and within 24 hours after extubation was performed. No abnormality in the intimal smoothness was negative, and abnormalities in the intimal smoothness and hyperplasia were positive. | 24 hours before intubation and after extubation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Infection nursing