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Drug Dosing: Obese Patients01:21

Drug Dosing: Obese Patients

In the United States, obesity is a prominent concern. It is linked to heightened mortality rates due to increased occurrences of conditions such as hypertension, atherosclerosis, coronary artery disease, and diabetes compared to nonobese individuals. A patient is classified as obese if their actual body weight surpasses the ideal or desirable body weight by 20%, based on Metropolitan Life Insurance Company data. Ideal body weights consider average weights and heights for males and females...
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Obesity significantly alters the pharmacokinetic processes of drug absorption and distribution, presenting unique challenges in medical treatment. The increased fat tissue and decreased lean muscle in obese individuals can significantly affect how drugs are absorbed into the body and distributed across different tissues. This alteration can lead to variances in the effectiveness and safety of medications, necessitating adjustments in dosing or drug selection for obese patients.One notable...
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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
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Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...

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Multidisciplinary Approach to Obesity Management: A Case Report
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Optimizing long-term weight control after bariatric surgery: a pilot study.

Melissa A Kalarchian1, Marsha D Marcus, Anita P Courcoulas

  • 1Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA. kalarchianma@upmc.edu

Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery
|July 2, 2011
PubMed
Summary
This summary is machine-generated.

A behavioral intervention shows promise for improving long-term weight control in bariatric surgery patients. Further research is needed to identify optimal timing and patient selection for this approach.

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Area of Science:

  • Obesity and Bariatric Surgery
  • Behavioral Medicine
  • Weight Management

Background:

  • Bariatric surgery often leads to significant weight loss, but many patients experience suboptimal long-term outcomes.
  • Identifying effective strategies to optimize weight control post-surgery is crucial for patient health.
  • This study investigates a behavioral intervention for patients with poor long-term weight loss after bariatric surgery.

Purpose of the Study:

  • To assess the preliminary efficacy of a 6-month behavioral intervention in improving weight loss outcomes for bariatric surgery patients.
  • To explore factors associated with successful weight management in this patient population.
  • To provide insights for academic medical centers in the United States regarding post-bariatric surgery care.

Main Methods:

  • Enrolled patients with a body mass index (BMI) ≥ 30 kg/m² who had bariatric surgery ≥ 3 years prior and <50% excess weight loss.
  • Randomly assigned participants to a 6-month behavioral intervention or a wait-list control group.
  • Conducted assessments at baseline, 6 months (post-intervention), and 12 months (follow-up).

Main Results:

  • Participants (n=36) had surgery an average of 6.6 years prior, with a mean BMI of 43.1 ± 6.2 kg/m².
  • Intervention group showed greater excess weight loss at 6 and 12 months compared to controls, though not statistically significant.
  • Greater weight loss was associated with higher depressive symptoms (P=.005) and less prior weight regain (P=.05) in intervention patients.

Conclusions:

  • Behavioral intervention demonstrates potential for optimizing long-term weight control after bariatric surgery.
  • Further research is necessary to determine the optimal timing for initiating interventions.
  • Identifying specific patient subgroups who will benefit most from behavioral interventions requires additional investigation.