Related Experiment Video
Updated: Feb 2, 2026

Author Spotlight: Enhancing Coronary Artery Revascularization
Published on: September 15, 2023
U500 Disposable Patch Insulin Pump: Results and Discussion of a Veterans Affairs Pilot Study
Christopher Martin1, David Perez-Molinar2, Muhammad Shah1
1Diabetes, Endocrinology and Metabolism, University of Minnesota, Minneapolis, Minnesota.
Abstract:
We present a Veterans Affairs-sponsored pilot study of U500 concentrated insulin administered via disposable patch insulin pump (DPIP) vs twice-daily (BID) injections with an insulin pen in a case series format. We conducted a prospective, single-center, randomized, intent-to-treat pilot study. Ten participants were enrolled with poorly controlled diabetes, defined as hemoglobin A1C >8.0 and severe insulin resistance defined as total daily dose >200 units. Participants were randomized in a 1:1 ratio to either U500 DPIP or U500 BID insulin titration protocols for 14 weeks. A clinical pattern emerged where four participants randomized to the DPIP treatment arm were withdrawn early as the DPIP did not work well for the purpose studied. There was not a statistically significant difference in the rate of hypoglycemia between treatment arms. Based on our clinical experience and results, we argue against the general use of U500 DPIP in clinical practice.
More Related Videos
Related Concept Videos
Pilot and Numeric Relaying
ATP Driven Pumps III: V-type Pumps
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
ATP Driven Pumps II: P-type Pumps
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
Long-patch Base Excision Repair
Pumped Concrete
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
Refrigerators and Heat Pumps
A household refrigerator removes heat from...

