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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Weekend effect: analysing temporal trends in solid organ donation.

James A Hedley1, Nicholas Chang1, Patrick J Kelly1

  • 1Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia.

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Summary
This summary is machine-generated.

Organ donation in Australia is not affected by weekend referrals. Donation rates, family consent, and medical suitability remain consistent across weekdays and weekends, unlike findings in the USA.

Keywords:
family consentorgan donationweekend effect

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Area of Science:

  • Organ Donation and Transplantation
  • Public Health
  • Medical Research

Background:

  • Weekend effect
  • organ donation
  • kidney discard rate
  • Australia
  • USA

Purpose of the Study:

  • Investigate the impact of weekend referrals on organ donation in Australia.
  • Compare Australian organ donation outcomes with US findings.

Main Methods:

  • Retrospective review of New South Wales Organ and Tissue Donation Service logs (2010-2016).
  • Logistic regression analysis adjusting for referral hospital clustering.
  • Primary outcome: progression to organ procurement; Secondary outcomes: family consent, medical suitability.

Main Results:

  • No significant difference in organ donation rates for weekend versus weekday referrals (adjusted OR 1.17).
  • Family consent (adjusted OR 1.20) and medical suitability (adjusted OR 1.15) were not lower for weekend referrals.
  • Lower referral numbers on weekends did not impact donation outcomes.

Conclusions:

  • The Australian organ donation pathway is consistent throughout the week.
  • Weekend referrals do not negatively impact organ donation progression in Australia.
  • Findings contrast with the "weekend effect" observed in US organ donation studies.