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Related Concept Videos

Insulin: Dosing Regimen and Adverse Effects01:16

Insulin: Dosing Regimen and Adverse Effects

Insulin-replacement therapy usually includes both long-acting insulin (basal) and short-acting insulin (to cater to postprandial needs). In a diverse group of type 1 diabetes patients, the average daily insulin dose is typically 0.5-0.7 units/kg body weight. However, obese patients and pubertal adolescents may need more due to insulin resistance.
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...
Insulin Formulations: Types and Delivery01:27

Insulin Formulations: Types and Delivery

Insulin preparations are categorized by their duration of action into short-acting and long-acting types. Two strategies are used to modify insulin's absorption and pharmacokinetic profile: slowing the absorption post-subcutaneous injection, or altering human insulin's amino acid sequence or protein structure. These changes retain the insulin's ability to bind to the insulin receptor, but alter its behavior in solution or after injection.
Short-acting insulins are divided into rapid-acting...
Diabetes: Management and Pharmacotherapy01:15

Diabetes: Management and Pharmacotherapy

The therapy for diabetes aims to alleviate hyperglycemia-related symptoms, prevent acute metabolic decompensation, and reduce chronic end-organ complications. Glycemic control is evaluated through short-term (self-monitoring, continuous glucose monitoring) and long-term (A1c, fructosamine) metrics, enabling near real-time tracking of blood glucose levels and reflecting glycemic control over specific time frames.
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
Diabetes Mellitus: Overview and Type I Subtype01:22

Diabetes Mellitus: Overview and Type I Subtype

Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Insulin: Biosynthesis, Chemistry, and Preparation01:25

Insulin: Biosynthesis, Chemistry, and Preparation

The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment primarily uses...
Production of Pharmaceuticals01:30

Production of Pharmaceuticals

Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...

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Related Experiment Video

Updated: Jun 29, 2026

Improving IV Insulin Administration in a Community Hospital
12:08

Improving IV Insulin Administration in a Community Hospital

Published on: June 11, 2012

Intensive insulin therapy in practice: can we do it?

Lesly A Dossett1, Bryan Collier, Rafe Donahue

  • 1Division of Trauma & Surgical Critical Care, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37212, USA. lesly.dosset@vanderbilt.edu

JPEN. Journal of Parenteral and Enteral Nutrition
|October 4, 2008
PubMed
Summary

Adherence to intensive insulin therapy (IIT) protocols in the ICU is challenging. Late blood glucose (BG) measurements negatively impact glycemic control, increasing risks of hyperglycemia and hypoglycemia.

Related Experiment Videos

Last Updated: Jun 29, 2026

Improving IV Insulin Administration in a Community Hospital
12:08

Improving IV Insulin Administration in a Community Hospital

Published on: June 11, 2012

Area of Science:

  • Critical Care Medicine
  • Endocrinology
  • Clinical Practice

Background:

  • Intensive insulin therapy (IIT) is standard ICU care but difficult to implement precisely.
  • Quantifying adherence to IIT protocols and its impact on blood glucose (BG) control is crucial.

Purpose of the Study:

  • To quantify adherence to an IIT protocol in a clinical setting.
  • To describe the impact of adherence on overall BG control.

Main Methods:

  • Retrospective analysis of critically ill patients treated with IIT.
  • Evaluation of protocol adherence by assessing the timing of BG measurements (early, on time, late).
  • Outcome measures included mean BG, median BG, and proportion of values within the target range.

Main Results:

  • Analysis of 54,139 BG measurements in 1106 patients.
  • Overall mean BG was 116 mg/dL, with only 46% of values within the 80-110 mg/dL target range.
  • Late BG measurements (9%) were less likely to be within range (34% vs. 46%) and associated with severe hyperglycemia or hypoglycemia.

Conclusions:

  • Precise implementation of IIT is challenging in complex ICU environments.
  • Measurement timing significantly impacts BG control.
  • Late BG measurements increase the risk of both hyperglycemic and hypoglycemic episodes.