Donor selection in the modern era

Kiran K Khush1

  • 1Division of Cardiovascular Medicine, Department of Medicine, Stanford University, Stanford, California, USA.

Insights

The demand for donor hearts exceeds supply, leading to the use of "expanded criteria" donor hearts. Research reviews current data and suggests strategies to increase the donor pool for heart transplantation.

Area of Science:

  • Cardiology
  • Transplantation Medicine
  • Organ Donation

Background:

  • Increasing disparity between donor heart supply and demand for transplantation.
  • Liberalization of donor heart acceptance criteria over recent decades.
  • Routine use of hearts from donors with specific conditions (e.g., LVH, cocaine use, CPR).

Purpose of the Study:

  • Review recent data on the utilization of "expanded criteria" donor hearts.
  • Propose methods to expand the donor heart pool.
  • Discuss emerging tools and ethical considerations in donor heart acceptance.

Main Methods:

  • Review of recent scientific literature and clinical data.
  • Analysis of outcomes associated with expanded criteria donor hearts.
  • Exploration of novel donor sources and acceptance strategies.

Main Results:

  • Expanded criteria donor hearts are increasingly utilized, expanding the donor pool.
  • Potential for increasing donor pool through hepatitis C donors and circulatory death determination.
  • Emerging role of donor biomarkers and risk scores in decision-making.

Conclusions:

  • Expanded criteria donor hearts are a viable option to address organ shortages.
  • Further strategies are needed to increase donor pool, including novel sources.
  • Ethical considerations regarding donor information sharing require careful deliberation.

Related Concept Videos

Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
721
What is Natural Selection?01:32

What is Natural Selection?

Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
129.8K
Antibiotic Selection00:57

Antibiotic Selection

Overview
60.2K
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
45.3K
Frequency-dependent Selection01:21

Frequency-dependent Selection

When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
24.2K
Natural Selection and Adaptation01:15

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations,...
1.5K