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Related Concept Videos

Blood Studies I: ABG and VBG01:26

Blood Studies I: ABG and VBG

671
Blood studies are critical in the medical field, enabling healthcare professionals to assess a patient's health status accurately. This page will focus on two significant blood studies: Arterial Blood Gas (ABG) and Venous Blood Gas (VBG).
Arterial Blood Gas (ABG)
Arterial Blood Gas (ABG) studies are crucial for assessing the lungs' ability to supply oxygen and remove carbon dioxide, reflecting the patient's ventilation status. They also help understand the kidneys' capacity to...
671

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Repeated Blood Collection from Tail Vein of Non-Anesthetized Rats with a Vacuum Blood Collection System
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A comparative study on coagulation and hematologic laboratory techniques for blood sampling using the push-pull

Lingli Wang1, Xiaomei Zhang1, Yi Qin1

  • 1Department of Nursing, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.

The Journal of Vascular Access
|October 18, 2022
PubMed
Summary

The push-pull blood collection method from a central venous catheter (CVC) is equivalent to direct venous puncture (DVP) for coagulation and hematologic tests, offering reliable and substitutable results.

Keywords:
Blood specimen collectionblood coagulation testscentral venous catheterizationcentrally inserted central cathetershematologic testsperipherally inserted central catheterpush-pull method

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Area of Science:

  • Clinical Pathology
  • Medical Devices

Background:

  • Central venous catheters (CVCs) are common in critically ill patients.
  • Blood sampling from CVCs can be challenging.
  • Direct venous puncture (DVP) is a standard but invasive method.

Purpose of the Study:

  • To evaluate the equivalence and substitutability of the push-pull method from a CVC versus DVP.
  • To compare laboratory results for coagulation and hematologic tests between the two methods.

Main Methods:

  • Comparative, within-subject study involving 154 paired blood samples.
  • Blood collected from critically ill patients (≥18 years) using CVC push-pull and DVP.
  • Analysis included coefficient of variation (CV), intraclass correlation coefficient (ICC), and Bland-Altman statistics.

Main Results:

  • Excellent reliability demonstrated with ICCs > 0.90 for both methods.
  • Similar coefficients of variation (CV) observed between CVC push-pull and DVP.
  • Bland-Altman analysis confirmed clinical acceptability and substitutability of CVC push-pull samples.

Conclusions:

  • The push-pull method for blood collection from CVCs is a reliable alternative to DVP.
  • This method is acceptable for routine coagulation and hematologic laboratory testing.