Abstract
Various methods of administering phenytoin suspension through a percutaneous endoscopic gastrostomy (PEG) Pezzer catheter were evaluated in vitro to determine which method resulted in the most complete recovery of phenytoin. To determine the effect of temperature on phenytoin recovery, 12 mL of phenytoin suspension (Dilantin-125, 125 mg/5 mL) was administered through three separate 35.5-cm 20 French latex PEG Pezzer catheters under each of three temperature conditions (suspension 11.8°C and catheter 22°C, suspension and catheter 22°C, and suspension 22°C and catheter 37°C). To determine the effect of the administration method, 12-mL aliquots of phenytoin suspension were injected into the catheter by seven methods that varied with respect to catheter temperature, dilution of suspension, and irrigation of catheter. Each method was tested in triplicate, and samples were assayed by high-performance liquid chromatography. Varying the temperature of the catheter or suspension had little effect on the recovery of phenytoin. There was no appreciable loss of phenytoin when the suspension was undiluted, regardless of whether the catheter was irrigated. The greatest losses were seen when the suspension was diluted before administration. Irrigation also caused a decrease in recovery, but to a lesser extent than dilution. Until the effects of administering multiple doses of phenytoin through PEG Pezzer catheters are investigated, phenytoin suspension should not be diluted before administration because of decreased recovery and increased administration time.
| Original language | English |
|---|---|
| Pages (from-to) | 373-377 |
| Number of pages | 5 |
| Journal | American Journal of Hospital Pharmacy |
| Volume | 47 |
| Issue number | 2 |
| State | Published - 1990 |
| Externally published | Yes |
Fingerprint
All Science Journal Classification (ASJC) codes
- Leadership and Management
- Pharmaceutical Science
Cite this
Recovery of phenytoin suspension after in vitro administration through percutaneous endoscopic gastrostomy Pezzer catheters. / Splinter, M. Y.; Seifert, C. F.; Bradberry, J. Chris; Allen, L. V.; Tu, Y. H.; Welsh, J. D.
In: American Journal of Hospital Pharmacy, Vol. 47, No. 2, 1990, p. 373-377.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Recovery of phenytoin suspension after in vitro administration through percutaneous endoscopic gastrostomy Pezzer catheters
AU - Splinter, M. Y.
AU - Seifert, C. F.
AU - Bradberry, J. Chris
AU - Allen, L. V.
AU - Tu, Y. H.
AU - Welsh, J. D.
PY - 1990
Y1 - 1990
N2 - Various methods of administering phenytoin suspension through a percutaneous endoscopic gastrostomy (PEG) Pezzer catheter were evaluated in vitro to determine which method resulted in the most complete recovery of phenytoin. To determine the effect of temperature on phenytoin recovery, 12 mL of phenytoin suspension (Dilantin-125, 125 mg/5 mL) was administered through three separate 35.5-cm 20 French latex PEG Pezzer catheters under each of three temperature conditions (suspension 11.8°C and catheter 22°C, suspension and catheter 22°C, and suspension 22°C and catheter 37°C). To determine the effect of the administration method, 12-mL aliquots of phenytoin suspension were injected into the catheter by seven methods that varied with respect to catheter temperature, dilution of suspension, and irrigation of catheter. Each method was tested in triplicate, and samples were assayed by high-performance liquid chromatography. Varying the temperature of the catheter or suspension had little effect on the recovery of phenytoin. There was no appreciable loss of phenytoin when the suspension was undiluted, regardless of whether the catheter was irrigated. The greatest losses were seen when the suspension was diluted before administration. Irrigation also caused a decrease in recovery, but to a lesser extent than dilution. Until the effects of administering multiple doses of phenytoin through PEG Pezzer catheters are investigated, phenytoin suspension should not be diluted before administration because of decreased recovery and increased administration time.
AB - Various methods of administering phenytoin suspension through a percutaneous endoscopic gastrostomy (PEG) Pezzer catheter were evaluated in vitro to determine which method resulted in the most complete recovery of phenytoin. To determine the effect of temperature on phenytoin recovery, 12 mL of phenytoin suspension (Dilantin-125, 125 mg/5 mL) was administered through three separate 35.5-cm 20 French latex PEG Pezzer catheters under each of three temperature conditions (suspension 11.8°C and catheter 22°C, suspension and catheter 22°C, and suspension 22°C and catheter 37°C). To determine the effect of the administration method, 12-mL aliquots of phenytoin suspension were injected into the catheter by seven methods that varied with respect to catheter temperature, dilution of suspension, and irrigation of catheter. Each method was tested in triplicate, and samples were assayed by high-performance liquid chromatography. Varying the temperature of the catheter or suspension had little effect on the recovery of phenytoin. There was no appreciable loss of phenytoin when the suspension was undiluted, regardless of whether the catheter was irrigated. The greatest losses were seen when the suspension was diluted before administration. Irrigation also caused a decrease in recovery, but to a lesser extent than dilution. Until the effects of administering multiple doses of phenytoin through PEG Pezzer catheters are investigated, phenytoin suspension should not be diluted before administration because of decreased recovery and increased administration time.
UR - http://www.scopus.com/inward/record.url?scp=0025323119&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025323119&partnerID=8YFLogxK
M3 - Article
VL - 47
SP - 373
EP - 377
JO - American Journal of Health-System Pharmacy
JF - American Journal of Health-System Pharmacy
SN - 1079-2082
IS - 2
ER -