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Intraosseous infusion: pressure-flow relationship and pharmacokinetics
The Journal of Trauma
|October 1, 1979
Summary
Intraosseous administration of fluids and drugs into the tibia offers a viable resuscitation method. This study quantifies infusion rates and drug efficacy, supporting its clinical utility in emergencies.
Area of Science:
- Veterinary Medicine
- Emergency Medicine
- Pharmacology
Background:
- Intraosseous (IO) access is a critical resuscitation technique.
- Quantitative data on IO fluid and drug delivery is limited.
- Evaluating IO administration's effectiveness is crucial for emergency care.
Purpose of the Study:
- To quantitatively assess intraosseous fluid infusion rates at varying pressures.
- To determine the onset and peak effect times of intraosseously administered vasoactive drugs.
- To establish the clinical utility of tibial intraosseous administration.
Main Methods:
- Studied crystalloid infusion flow rates into bovine tibial medullary cavities at different pressures (300, 200, 100 torr, and +81 cm H2O).
- Measured the time to initial and 90% maximal effect for intraosseous epinephrine and ephedrine injections.
- Utilized a bovine model for quantitative analysis.
Main Results:
- Mean infusion rates ranged from 10 +/- 1 ml/min to 41 +/- 2 ml/min depending on pressure.
- Intraosseous epinephrine/ephedrine showed initial effect at 17 +/- 3 seconds and 90% maximal effect at 45 +/- 5 seconds.
- Demonstrated significant fluid flow and rapid drug action via the tibial IO route.
Conclusions:
- The tibial intraosseous route provides effective fluid resuscitation and rapid drug delivery.
- Quantitative data supports the clinical utility of IO administration in emergency situations.
- This technique offers a valuable alternative for resuscitation when intravenous access is challenging.