Segments in this Video

Potassium Results Your Physicians Can Trust: Introduction (01:47)

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Objectives include: understanding the importance of accurate potassium levels; identification of 13 preanalytical variables that falsely elevate potassium; and understanding of how falsely elevated levels can change patient management.

Pseudohyperkalemia (02:53)

Pay attention to collection variables and investigate all. Variables healthcare professionals cannot control include: patient-dependent variables and drug interference.

Pre-Collection (05:10)

Contributors to falsely elevated potassium levels include: patient identification and specimen labeling; skin-puncture prep; fist pumping; prolonged tourniquet application

During Collection (06:07)

Contributors to falsely elevated potassium levels include: IV infusions; drawing from a VAD; Benzalkonium heparin catheters; post-transfusion effect; order of draw; pouring EDTA tube into serum or heparin tube; and hemolysis.

Post-Collection (07:32)

Contributors to falsely elevated potassium levels include: comparing capillary results vs. venous results; delays in processing; refrigeration; centrifuging with stoppers removed; centrifuging a second time; and improper centrifugation.

Hemolysis (01:31)

Hemolysis is the most common reason chemistry samples are rejected. See benchmark information on hemolysis rates.

Preventing Hemolysis (08:53)

Ways to prevent hemolysis include: limit line draws; limit line draws to larger cannulas; use a syringe if you must draw during an IV start; break the seal and pull slowly when using a syringe; do not forcibly fill a tube; avoid frothing; and invert tubes gently.

Preventing Hemolysis: Part Two (04:21)

Ways to prevent hemolysis include: terminate sluggish draws; avoid 25 gauge needles; assure proper centrifugation; investigate pneumatic transport contribution; assure proper storage/transit temps; and minimize tourniquet application.

Summary (02:24)

Review the variables that can elevate potassium levels and hear tips for aggressively addressing the issue.

Additional Resources (00:60)

See additional resources on phlebotomy information.

Credits: Potassium Results Your Physicians Can Trust (00:27)

Credits: Potassium Results Your Physicians Can Trust

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Potassium Results Your Physicians Can Trust


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Description

Physicians challenge potassium levels more than any other analyte, and when your potassium results aren't trusted, it throws everything else your lab is testing into question. This presentation discusses the multitude of ways potassium results can be altered during collection or processing leading physicians to question results. Some contributors include fist pumping, improper centrifugation, delays in processing, prolonged tourniquet constriction, an incorrect order of draw, drawing through certain IV cannulas, hemolysis, iodine as a site prep solution, patient-dependent variables, and more.

Length: 43 minutes

Item#: FMK127995

Copyright date: ©2014

Closed Captioned

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