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Related Concept Videos

Ethical Issues01:27

Ethical Issues

Nurses are essential in patient care, upholding the ethical principles of their profession and effectively navigating ethical dilemmas. Neglecting ethical issues can lead to inadequate patient care, compromised therapeutic relationships, and moral distress among healthcare workers.
Ethical Concerns in Healthcare:
Types of Toxins01:36

Types of Toxins

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Ethical Dilemmas I01:17

Ethical Dilemmas I

Ethical dilemmas in nursing are of utmost importance, as they often arise from the tension between adhering to core ethical principles and the practical realities of healthcare delivery. These dilemmas require nurses to navigate complex situations where competing ethical considerations pull them in different directions.
Let us explore some examples to understand the potentially complex moral decisions nurses face.
Take the case of caring for minors, particularly in areas related to reproductive...
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Biological Effects of Radiation02:59

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
Pharmaceutical Poisoning: Potential Scenarios01:26

Pharmaceutical Poisoning: Potential Scenarios

Pharmaceutical poisoning can occur through various channels, impacting an estimated 2 million hospitalized patients in the U.S. annually with serious adverse drug responses. These scenarios encompass both therapeutic uses, such as drug toxicity, where even standard dosages can lead to severe central nervous system depression, and non-therapeutic exposures, including accidental ingestion by children, and environmental and occupational exposures.Unintentional poisonings often involve exploratory...

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Issues in medical exposures.

Alex Elliott1

  • 1Department of Clinical Physics, University of Glasgow, Glasgow G12 8QQ, UK.

Journal of Radiological Protection : Official Journal of the Society for Radiological Protection
|May 21, 2009
PubMed
Summary
This summary is machine-generated.

Medical radiation, including CT and PET scans, significantly contributes to public exposure. This review examines risks, especially for asymptomatic individuals, and addresses non-ionizing radiation from sunbeds.

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Area of Science:

  • Medical physics and public health.
  • Radiation biology and epidemiology.

Background:

  • Medical exposures constitute a significant portion of ionizing radiation exposure, particularly in the UK (14%) and USA (>50% in 2006).
  • Increases in computed tomography (CT) and positron emission tomography (PET) procedures drive this rise in medical radiation exposure.
  • Non-ionizing radiation, specifically from sunbeds, is a growing concern, especially for younger demographics.

Purpose of the Study:

  • To highlight potential issues with CT scanning in asymptomatic individuals, where risk-benefit analysis is complex.
  • To review the implications of increasing PET facility usage and associated radiation dose considerations for patients and staff.
  • To address concerns regarding non-ionizing radiation from sunbeds, including regulatory variations and the need for further research.

Main Methods:

  • Analysis of existing data on medical radiation exposure trends.
  • Review of reports, including COMARE's examination of CT for whole-body, heart, lung, and colon studies.
  • Consideration of radiobiological and epidemiological data related to ionizing and non-ionizing radiation.

Main Results:

  • CT scanning of asymptomatic individuals presents unique risk-benefit challenges.
  • Rapid expansion of PET facilities necessitates careful radiation dose management for patients and staff.
  • Significant variation in sunbed regulation across Europe and a need for research into UV effects and tanning motivations.

Conclusions:

  • The use of medical imaging, particularly CT and PET, requires careful consideration of risks versus benefits, especially in asymptomatic populations.
  • Further research into the biological effects of UV radiation from sunbeds and public health interventions is warranted.
  • Addressing both ionizing and non-ionizing radiation requires a multidisciplinary approach involving radiobiology and epidemiology.