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Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
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The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
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Updated: Jan 25, 2026

Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
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Identifying Knowledge Gaps among LVAD Candidates.

Meredith Buchberg Trejo1, Kristin M Kostick2, Jerry D Estep3

  • 1Center for Medical Ethics and Health Policy, Baylor College of Medicine, One Baylor Plaza, Suite 310D, Houston, TX 77030, USA. mt8@bcm.edu.

Journal of Clinical Medicine
|April 26, 2019
PubMed
Summary
This summary is machine-generated.

Improving education for left ventricular assist device (LVAD) candidates is crucial. A new scale identified knowledge gaps, particularly in understanding risks and costs, to enhance informed consent for LVAD therapy.

Keywords:
consenteducationheart failureknowledgemechanical circulatory supportventricular assist device

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Area of Science:

  • Cardiology
  • Medical Education
  • Patient Consent

Background:

  • Effective patient education is vital for informed consent in left ventricular assist device (LVAD) candidacy.
  • Understanding candidate knowledge gaps is essential for improving educational strategies and consent processes.

Purpose of the Study:

  • To evaluate the effectiveness of an LVAD-specific Knowledge Scale in identifying knowledge gaps among LVAD candidates.
  • To compare the impact of standard education versus an LVAD-specific decision aid on candidate knowledge.
  • To pinpoint specific areas of understanding and misunderstanding regarding LVAD therapy.

Main Methods:

  • A validated, 20-item LVAD-specific Knowledge Scale was administered to candidates before and after educational interventions.
  • Two educational approaches were compared: standard education and an LVAD-specific decision aid.
  • Knowledge assessment was conducted at baseline and one week post-education.

Main Results:

  • Candidates demonstrated high correct response rates (>90%) for logistical items (support, self-care) post-education.
  • Lower correct response rates (<60%) were observed for items related to risks, transplant eligibility, and expenses.
  • The LVAD-specific decision aid led to greater improvements in knowledge, including recovery and complication forecasting, compared to standard education.

Conclusions:

  • The LVAD Knowledge Scale effectively identifies candidate knowledge deficits, aiding in tailored education.
  • Educational interventions should prioritize improving understanding of risks and complications for LVAD candidates.
  • Enhancing LVAD education is critical for optimizing decision-making and informed consent processes.