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Related Concept Videos

Drug Elimination: The Concept of Clearance01:06

Drug Elimination: The Concept of Clearance

Drug elimination refers to removing drugs from the body, either through urine by the kidneys or through bile by the liver. Drug clearance is a pharmacokinetic parameter that measures the efficiency of drug removal from the bloodstream within a specific time frame. It is calculated as the rate at which a drug is eliminated from plasma divided by the plasma concentration of the drug.
Drug clearance is not limited to renal excretion but encompasses all organs involved in drug elimination,...
Classification of Illness01:17

Classification of Illness

The meaning of illness is individualized to each person who experiences an alteration in health. In contrast, disease is a medical term indicating a pathological change in the structure and function of the body or mind. It is a condition that has specific symptoms and boundaries.
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe and...
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Retrovirus Life Cycles

Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the retrovirus to...
Drug Clearance: Overview01:06

Drug Clearance: Overview

Drug elimination refers to drug removal from the body, either through urine or bile, by the kidneys or liver, respectively. A pharmacokinetic parameter, drug clearance, measures the efficiency of drug removal from the bloodstream within a specific time frame. It is calculated as the rate at which a drug is eliminated from plasma divided by the drug's concentration in plasma.
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Curing Methods01:26

Curing Methods

Concrete members with a small surface-to-volume ratio are cured by oiling and moistening the forms before casting the concrete member. These forms can be left in place for a prolonged period to prevent moisture loss, and can be wetted if made of a material suitable for wetting. If the forms are removed early, the concrete member is moistened and covered with polythene sheets to maintain moisture. For large horizontal concrete surfaces exposed to dry weather, a temporary covering is suspended...
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Health is a condition of the body, mind, and spirit where an individual remains free from illness. Similarly, wellness is an active state, including living a lifestyle that promotes physical, mental, and emotional health. Physical health is critical for the overall well-being and can be affected by lifestyle, activity level, diet, and behavior. The highest attainable standard of health is a fundamental and universal human right. Consider Lisa, a fifteen-year-old born with congenital...

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Related Experiment Video

Updated: Jul 19, 2026

Murine Model of Leukemia Relapse to Induction Chemotherapy for Acute Lymphoblastic Leukemia
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The complete remission concept.

Hubert Mönnikes1

  • 1Division of Hepatology, Gastroenterology and Endocrinology, Charite - University Medical Center, Campus Virchow, Berlin, Germany.

Drugs of Today (Barcelona, Spain : 1998)
|September 21, 2006
PubMed
Summary

A new method combines symptom assessment and endoscopic findings to redefine complete remission for gastroesophageal reflux disease (GERD). This approach accurately measures treatment effectiveness by evaluating both symptom relief and esophageal healing.

Area of Science:

  • Gastroenterology
  • Clinical Therapeutics
  • Patient-Reported Outcomes

Background:

  • Gastroesophageal reflux disease (GERD) diagnosis and treatment efficacy assessment are complicated by the dissociation between esophageal lesions and reported symptoms.
  • Traditional methods often fail to capture the full picture of GERD, leading to challenges in evaluating treatment outcomes.
  • A unified approach is needed to simultaneously assess symptom resolution and endoscopic healing.

Purpose of the Study:

  • To introduce a redefined concept of complete remission for GERD that integrates both symptom control and endoscopic healing.
  • To present the ReQuest(TM)/LA-classification as a novel tool for comprehensively assessing GERD treatment efficacy.
  • To enable more accurate clinical characterization and outcome measurement in GERD patients.

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Main Methods:

  • Development of the Symptomatic Reflux Questionnaire (ReQuest(TM)), a validated scale measuring seven dimensions of GERD symptoms.
  • Adaptation of the Los Angeles classification for endoscopic assessment of esophageal lesions.
  • Combination of ReQuest(TM) with the adapted Los Angeles classification to create a unified assessment tool.

Main Results:

  • The ReQuest(TM) questionnaire effectively measures frequency and intensity across various GERD symptom dimensions.
  • The combined ReQuest(TM)/LA-classification links symptom assessment with objective endoscopic findings.
  • This integrated approach provides a single, global measure for evaluating treatment outcomes in GERD.

Conclusions:

  • The redefined concept of complete remission, incorporating both symptom and endoscopic parameters, offers a more accurate measure of GERD treatment success.
  • The ReQuest(TM)/LA-classification is a valuable tool for detailed clinical characterization and outcome assessment in GERD management.
  • This integrated approach facilitates a comprehensive understanding of treatment efficacy in GERD patients.