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Bioavailability Study Design: Single Versus Multiple Dose Studies01:11

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Bioavailability studies are essential for understanding how a drug is absorbed, distributed, metabolized, and excreted in the body. These studies assess the extent and rate at which the active pharmaceutical agent becomes available at the site of action. The design of bioavailability studies can involve single-dose or multiple-dose regimens, each with distinct advantages and limitations.Single-dose studies are the preferred approach due to their simplicity and reduced drug exposure for...
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Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
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Related Experiment Video

Updated: Feb 2, 2026

Use of a Percutaneous Ventricular Assist Device/Left Atrium to Femoral Artery Bypass System for Cardiogenic Shock
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Patient decision-making regarding left ventricular assist devices : A multiple case study.

Judy Dillworth1, Victoria Vaughan Dickson2, Alex Reyentovich3

  • 1The Pless Center for Nursing Research, New York University, Rory Meyers College of Nursing, 433 First Avenue, #742, New York, NY 10010, United States; Department of Medicine, Heart Failure Program, Heart Transplant and Left Ventricular Assist Device Program, NYU Langone Medical Center, 530 1st Avenue, Skirball 9N, New York, NY 10016, United States.

Intensive & Critical Care Nursing
|November 27, 2018
PubMed
Summary
This summary is machine-generated.

Patients deciding on a left ventricular assist device (LVAD) weigh survival, self-care, device expectations, and nurse-guided emotional support. Understanding these factors is crucial for informed LVAD decision-making.

Keywords:
Decision-makingHeart failureLeft ventricular assist device (LVAD)Mechanical circulatory support (MCS) devicesMultiple case studyQualitative research

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Area of Science:

  • Cardiology
  • Medical Device Technology
  • Patient Decision-Making

Background:

  • Left ventricular assist devices (LVADs) are critical for end-stage heart failure.
  • Patient decision-making for LVADs is complex and multifactorial.

Purpose of the Study:

  • To explore the nuanced decision-making processes patients undergo when considering an LVAD.
  • To identify key themes influencing patient choices beyond survival.

Main Methods:

  • A qualitative multiple case study design.
  • In-depth interviews with patients and key stakeholders.
  • Analysis of medical records, observations, and educational materials.

Main Results:

  • Survival remains a primary concern, but new themes emerged.
  • Patients consider self-care management, device acceptability, and future expectations.
  • The role of nurses in addressing patient fears, values, and preferences is significant.

Conclusions:

  • LVAD decisions involve a cost-benefit analysis of needs and consequences.
  • Device acceptability impacts clinical practice and public policy.
  • Nurses play a vital role in shared decision-making by eliciting patient concerns.