Pressure-adjusted venting eliminates start-up delays and compensates for vertical position of syringe infusion pumps used for microinfusion

© 2023. The Author(s)..

Microinfusions are commonly used for the administration of catecholamines, but start-up delays pose a problem for reliable and timely drug delivery. Recent findings show that venting of the syringe infusion pump with draining of fluid to ambient pressure before directing the flow towards the central venous catheter does not counteract start-up delays. With the aim to reduce start-up delays, this study compared fluid delivery during start-up of syringe infusion pumps without venting, with ambient pressure venting, and with central venous pressure (CVP)-adjusted venting. Start-up fluid delivery from syringe pumps using a microinfusion of 1 mL/h was assessed by means of liquid flow measurement at 10, 60, 180 and 360 s after opening the stopcock and starting the pump. Assessments were performed using no venting, ambient pressure venting or CVP-adjusted venting, with the pump placed either at zero, - 43 cm or + 43 cm level and exposed to a simulated CVP of 10 mmHg. Measured fluid delivery was closest to the calculated fluid delivery for CVP-adjusted venting (87% to 100% at the different timepoints). The largest deviations were found for ambient pressure venting (- 1151% to + 82%). At 360 s after start-up 72% to 92% of expected fluid volumes were delivered without venting, 46% to 82% with ambient pressure venting and 96% to 99% with CVP-adjusted venting. CVP-adjusted venting demonstrated consistent results across vertical pump placements (p = 0.485), whereas the other methods had significant variances (p < 0.001 for both). In conclusion, CVP-adjusted venting effectively eliminates imprecise drug delivery and start-up delays when using microinfusions.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:38

Enthalten in:

Journal of clinical monitoring and computing - 38(2024), 2 vom: 30. Apr., Seite 531-538

Sprache:

Englisch

Beteiligte Personen:

Weiss, Markus [VerfasserIn]
Wendel-Garcia, Pedro David [VerfasserIn]
Cannizzaro, Vincenzo [VerfasserIn]
Grass, Beate [VerfasserIn]
Buehler, Philipp Karl [VerfasserIn]
Kleine-Brueggeney, Maren [VerfasserIn]

Links:

Volltext

Themen:

Catecholamines
Central venous pressure
Infusion
Journal Article
Microinfusion
Pump
Start-up
Syringe
Venting

Anmerkungen:

Date Completed 08.04.2024

Date Revised 08.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s10877-023-01101-6

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365550167