This document discusses the use of ultraviolet (UV) technology for disinfecting surfaces in healthcare settings. It provides background on healthcare-associated infections and the role of contaminated surfaces in transmission. It then summarizes studies that found UV light effectively reduces bacteria and viruses on surfaces. The document reviews different types of UV light technologies, including portable UV devices and stationary whole-room disinfection systems. It discusses the mechanisms of how UV light deactivates microbes and lists advantages and disadvantages of UV disinfection. Overall, the document concludes that UV light is a promising method for reducing healthcare-associated infections by disinfecting surfaces, though it has some limitations compared to traditional cleaning methods.
Autoclave, types of autoclave, horizontal autoclave, vertical autoclave, vacuum type autoclave, pressure cooker type autoclave. their purpose, precaution, etc....
Autoclave, types of autoclave, horizontal autoclave, vertical autoclave, vacuum type autoclave, pressure cooker type autoclave. their purpose, precaution, etc....
The above PPT includes different methods of sterilization- Dry heat, Moist heat, Radiation and Chemical methods. It also includes principle and working of hot air oven and autoclave.
Fumigation is a process of gaseous sterilisation which is used for killing of micro-organisms and prevention of microbial growth in air, surface of wall or floor.
The above PPT includes different methods of sterilization- Dry heat, Moist heat, Radiation and Chemical methods. It also includes the basic knowledge on sterilization and tests for sterility.
EtO sterilization is an alternative to high temperature steam sterilization found in medical and pharmaceutical industries. EtO sterilization validation or testing allows users to accurately sterilize and maintain regulatory requirements. Rugged and durable, MadgeTech’s EtO data loggers makes retrieving data fast and easy to use.
Importance of sterilization and its guidelinesRajKumar4943
Sterilization and disinfection are the basic components of hospital infection control activities. Every day, a number of hospitals are performing various surgical procedures. Even more number of invasive procedures are being performed in different health care facilities. The medical device or the surgical instrument that comes in contact with the sterile tissue or the mucus membrane of the patient during the various processes is associated with increased risk of introduction of pathogens into the patient's body. Moreover, there is chance of transmission of infection from patient to patient; from patient or to health care personnel, and vice versa; or from the environment to the patient through the improper sterilized or disinfected devices. Hence, medical personnel, laboratory people and the health care providers should have better knowledge regarding these techniques to prevent the spread of these pathogens.
Laser science is principally concerned with quantum electronics, laser construction, optical cavity design, the physics of producing a population inversion in laser media, and the temporal evolution of the light field in the laser. It is also concerned with the physics of laser beam propagation, particularly the physics of Gaussian beams, with laser applications, and with associated fields such as non-linear optics and quantum optics.
The above PPT includes different methods of sterilization- Dry heat, Moist heat, Radiation and Chemical methods. It also includes principle and working of hot air oven and autoclave.
Fumigation is a process of gaseous sterilisation which is used for killing of micro-organisms and prevention of microbial growth in air, surface of wall or floor.
The above PPT includes different methods of sterilization- Dry heat, Moist heat, Radiation and Chemical methods. It also includes the basic knowledge on sterilization and tests for sterility.
EtO sterilization is an alternative to high temperature steam sterilization found in medical and pharmaceutical industries. EtO sterilization validation or testing allows users to accurately sterilize and maintain regulatory requirements. Rugged and durable, MadgeTech’s EtO data loggers makes retrieving data fast and easy to use.
Importance of sterilization and its guidelinesRajKumar4943
Sterilization and disinfection are the basic components of hospital infection control activities. Every day, a number of hospitals are performing various surgical procedures. Even more number of invasive procedures are being performed in different health care facilities. The medical device or the surgical instrument that comes in contact with the sterile tissue or the mucus membrane of the patient during the various processes is associated with increased risk of introduction of pathogens into the patient's body. Moreover, there is chance of transmission of infection from patient to patient; from patient or to health care personnel, and vice versa; or from the environment to the patient through the improper sterilized or disinfected devices. Hence, medical personnel, laboratory people and the health care providers should have better knowledge regarding these techniques to prevent the spread of these pathogens.
Laser science is principally concerned with quantum electronics, laser construction, optical cavity design, the physics of producing a population inversion in laser media, and the temporal evolution of the light field in the laser. It is also concerned with the physics of laser beam propagation, particularly the physics of Gaussian beams, with laser applications, and with associated fields such as non-linear optics and quantum optics.
Disinfecting Mobile Devices for use in Healthcare SettingsPhilip Gulan
The use of mobile technology is expected to have a profound impact on how care is delivered, the quality of patient experience and the cost of healthcare in general. Therefore, the quantity of mobile devices being used in healthcare environments is expanding significantly every year. Use of smartphones and tablets in the healthcare settings is rapidly expanding and contributing to improved healthcare and reduced costs around the globe. But this introduction of new technology into clinically sensitive areas creates the risk of passing along bacterial contamination throughout a hospital.
The present study was aimed to design a simple model to test efficacy of germicidal Ultraviolet light (UV-C) used inside ChargeMax as a charging cabinet designed for smartphones and tablets and made by Cetrix Technologies.
Based at London's ExCel centre, this is the only international exhibition & conference dedicated exclusively to the armoured vehicle community. International Armoured Vehicles brings together senior military and industry experts, providing opportunities to gain expert insights on armoured vehicle trends, global procurement activity and lessons learnt from the battlefield, as well as to conduct business with the world's leading vehicle, system and component manufacturers and smaller specialist suppliers.
One way AMTS is “Constructing an Intelligent Tomorrow” is through the work of our Cleanroom Performance Solutions group. In this 4-part series, our very own Emil Bordelon, a NEBB Certified Professional, outlines the four main elements of a cleanroom that are considered during the design, certification and maintenance phases.
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Infection prevention in healthcare construction and renovationMoustapha Ramadan
Infection prevention and control in healthcare setting during construction and renovation.
Is really there is a need? What is the role of infection preventionist?
Presentation was given to Labor workers and Engineers
This presentation aims to give a quick guide on new technologies in environmental cleaning. The decision of choosing a specific type depends on each healthcare setting and its need.
The two most commonly used within microbiology are
HACCP (which originated in the food industry) and FMEA
(developed for engineering). This article explores these two
approaches, first with a description of HACCP, followed by a
description and case study of FMEA in sterility testing.
HAI are a significant cause of increased morbidity and mortality in hospitalized patients. In addition, HAI lead to prolonged hospital stay, are inconvenient for the patients, and constitute huge economic burden on health care system. Studies have shown that HAI prevalence varies from 3.8% to 19.6% depending on the population surveyed with a pooled global prevalence of 10.1%.
Current Status and Future Prospects for Infection Control with Optical RadiationWilliam Bahnfleth
Control of viral and bacterial pathogens in the built environment is an important aspect of indoor environmental quality with severe personal and economic consequences. Diminished quality of life, premature mortality, decreased worker productivity, and increased healthcare costs are all possible outcomes. Healthcare environments are particularly at risk due to the state of health of patients and the prevalence of increasingly drug-resistant pathogens. The World Health Organization (WHO) estimates that in developed countries, 7% hospital patients overall and roughly 30% of intensive care unit patients will contract at least one healthcare acquired infection (HAI) during their stay. The role of heating, ventilation, and air-conditioning systems in an infection control program is to prevent exposure through a combination of ventilation, pressurization, compartmentalization, and air treatment. By lowering airborne loadings of infectious aerosols, a beneficial effect may be achieved with respect to both inhalational and intermediate surface (fomite) transmission. These measures are becoming of greater importance as the ability to stop infections with drug therapy (e.g., the use of antibiotics for bacterial infections) decreases. Conventional approaches include the use of large quantities of outside air and high air change rates, which increase energy use in combination with high efficiency filters. It has been known for nearly a century that certain wavelengths of light have germicidal capability that is not affected by drug resistance. In particular, optical radiation in the UVC band, particularly 254 nm UVC produced by low pressure mercury vapor lamps has been used to good effect not only for air disinfection, but also as an adjunct to surface disinfection using oxidants and other cleaning materials. This presentation summarizes the state of the art with respect to technology and applications, surveys available evidence of effectiveness, and discusses the potential of future developments. The context is primarily healthcare facilities, but with applicability to other types of residential and non-residential facilities.
This presentation includes brief history about UV Disinfectant lighting, what is UV light, ISO Class consideration, services and maintenance, room construction, lighting control, lux requirement ,IP rating, and lighting color.
How UVC Robot disinfects Patient Room/ Operation theaters and any area that is suspected to be infected.
Also used in the food industry and Environmental services.
Environmental cleaning depends on Infection Control risk Assessment as High, Moderate & Low Risk Areas. This document includes Procedures & Practices in Hospital for Environmental Cleaning & Disinfection based on cheapest hospital grade disinfectant i.e Clorox / Household Bleach available for especially third world countries.
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
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Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Anti ulcer drugs and their Advance pharmacology ||
Anti-ulcer drugs are medications used to prevent and treat ulcers in the stomach and upper part of the small intestine (duodenal ulcers). These ulcers are often caused by an imbalance between stomach acid and the mucosal lining, which protects the stomach lining.
||Scope: Overview of various classes of anti-ulcer drugs, their mechanisms of action, indications, side effects, and clinical considerations.
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
1. UV Technology for
Disinfecting Surfaces
By
Dr Anjum Hashmi
MBBS,CCS(USA),MPH
Infection Control
Director,
Maternity & Children’s
Hospital
Najran KSA
2. Introduction
• Healthcare-associated infections remain an
important source of morbidity and mortality,
with an estimated 1.7 million infections and 0.1
million deaths annually.
• The major source of nosocomial pathogens is
thought to be patients’ endogenous flora, but an
estimated 20%–40% of healthcare-associated
infections have been attributed to cross infection
via the hands of healthcare personnel.
• Contamination of the hands of healthcare
personnel could in turn result directly from
patient contact or indirectly from touching
contaminated environmental surfaces.
3. Introduction
• The risks associated with hospital & community
acquired infections are enormous for both
human health and medical costs.
• Scientific literature confirms that Clostridium
difficile, MRSA, VRE, Acinetobacter baumannii,
and influenza are transmitted via
environmental surfaces.
4. Introduction
• Published studies indicate that only 50% of
environmental surfaces in a typical OR suite or
patient room may be effectively disinfected by
routine environmental cleaning.
• Thus patient’s risk of contracting an HAI
increases 100% when the previous room
occupant had been diagnosed with an
infection.
5. “Targeting Zero” initiative
• Recently, APIC began a “Targeting Zero” initiative
focused on eliminating HAIs.
• Improvements have been made in infection control
in recent years but, the environment remains a
significant problem.
• We are still cleaning the environment in the same
manner as we were doing decades ago, except
change to new chemicals.
• We will not achieve zero HAIs until new
technologies are used in the environmental cleaning
sector as well.
6. No-Touch Disinfection System
• No-touch disinfection, also called “area
disinfection," is a means of disinfecting an
enclosed space.
• This can be achieved using either ultraviolet
light (UV) or hydrogen peroxide vapor (HPV).
• In both cases, a device is placed into a patient
room, operating room or other area while the
room is unoccupied and the device is run for
specified time (disinfection cycle).
7.
8. Mechanism of Action
• UV-C technology rapidly and cost effectively deactivate
viruses, mold and bacteria that could otherwise
threaten people's health.
• UV-C energy passes through the cell walls of bacteria,
viruses and bacterial spores & it is absorbed by the
DNA, RNA and proteins.
• The primary mechanisms of damage created by UV-C is
the fusing of the strands of DNA creating what is known
as "thymine dimers."
• Once the DNA is fused, the organism can no longer
replicate and is, therefore, no longer infectious. The
technical term for this is "deactivation."
9. Type of Ultraviolet Light
• The application of UV-C energy to deactivate
microorganisms is known as Germicidal Irradiation or
UVGI.
• Optimal wavelengths vary for UV-C disinfection of
different organisms. On average, wavelengths of 250-265
nm are where peak DNA absorption occurs.
• Mercury Ultraviolet It is most familiar form of UV is that
is produced by mercury vapor lamps. In these lamps, the
mercury vapor is ionized to create UV-C of 254 nm.
• Pulsed Xenon Ultraviolet (PX-UV) It is produced by
pulsing a xenon lamp which produces a broad spectrum
UV (from 200 nm to 320 nm) covering entire germicidal
UV band.
10.
11.
12. Literature Review
• UV-C light unit significantly reduced aerobic
colony counts and C. difficile spores on
contaminated surfaces in patient rooms.
• UV -C technology eliminate more than 3-log10
vegetative bacteria (MRSA, VRE, and
Acinetobacter baumannii) and more than 2.4-
log10 C. difficile seeded onto Formica surfaces in
experimentally contaminated patient rooms.
• William A. Rutala, David J. Weber, Are Room Decontamination Units Needed to Prevent
Transmission of Environmental Pathogens? Infection Control and Hospital Epidemiology August
2011, vol. 32, no. 8
13. Literature Review
• There is ample evidence that no-touch systems
such as UV-C light can reduce environmental
contamination with healthcare-associated
pathogens.
• UV-C light unit significantly reduced aerobic
colony counts and C. difficile spores on
contaminated surfaces in patient rooms.
• John M. Boyce, Nancy L. Havill, Brent A. Moore, Terminal Decontamination of Patient
Rooms Using an Automated Mobile UV Light Unit. Infect Control Hosp Epidemiol
2011;32(8):737-742
14. Mean number of colony-forming units (CFU) of C. difficile, MRSA, and VRE
from contaminated surfaces in hospital rooms before & after disinfection with
UV .
Two-hundred sixty-one total surfaces from 66 rooms were cultured, including
call lights, bedside tables, telephones, and bed rails.
Nerandzic et al. Evaluation of an automated ultraviolet radiation device for decontamination of Clostridium
difficile and other healthcare-associated pathogens in hospital rooms. BMC Infectious Diseases 2010, 10:197
15. Mean aerobic colony counts before and after UV light
treatment for 5 high-touch surfaces in 20 rooms
16. Literature Review
• Germicidal Irradiation or UVGI is very
effective in decontamination of
Acinetobacter baumannii form all metal
surfaces i.e., complete killing of
Acinetobacter baumannii from
contaminated surfaces was achieved
with Ultraviolet C Light.
• Vipin K. Rastogi, Vipin K. Rastogi, Lalena Wallace, Lisa S. Smith. Disinfection of Acinetobacter
baumannii-Contaminated Surfaces Relevant to Medical Treatment Facilities with Ultraviolet
C Light. MILITARY MEDICINE, 172, 11:1166, 2007
17. Literature Review
• Pulse xenon ultraviolet light is an effective
and efficient means of disinfecting surfaces
contaminated with Clostridium difficile spores,
MRSA and/or VRE, providing an alternative
means to bleach and other chemical
disinfectants for use in clinical settings.
• Mark Stibich. Use of Pulse Xenon Ultraviolet to Deactivate Clostridium Difficile spores,
Methicillin-Resistant Staphylococcus Aureus and Vancomycin-Resistant Enterococci .
SHEA/Fifth Decennial 2010.
18. UV irradiation Advantages
• Reliable biocidal activity against a wide range of healthcare-
associated pathogens
• Room surfaces and equipment decontaminated
• Room decontamination is rapid (!15 minutes) for vegetative
bacteria Effective against Clostridium difficile, although longer
exposure is required (!50 minutes)
• HVAC system does not need to be disabled, and the room does
not need to be sealed
• UV light is residual-free and does not give rise to health or
safety concerns
• No consumable products so costs include only capital
equipment and staff time
• Good distribution in the room of UV energy via an automated
monitoring system
19. UV irradiation Disadvantages
• All patients and staff must be removed from the room
before decontamination
• Decontamination can be accomplished only at terminal
disinfection (i.e., cannot be used for daily disinfection)
because the room must be emptied of people.
• Capital equipment costs are substantial.
• Does not remove dust and stains, which are important
to patients and visitors; hence, cleaning must precede
UV decontamination.
• Sensitive to use parameters (e.g., wavelength, UV dose
delivered).
• Requires that equipment and furniture be moved away
from walls.
23. V-PAD (Portable Area
Disinfection)
• Four maximum output extended length
UV-C lamps with combined output of
600 watts.
• Digital timer/counter to set disinfection
cycle times of up to 99 hours.
• Four infrared motion sensors to
automatically shut off device if
someone enters the room during the
disinfection cycle.
• Metal reflectors to protect lamp and
better distribute UV energy
• Tri-color LED indicates status of
operation.
24.
25. TRU-D Smart UVC™ with
Sensor360™ technology
• TRU-D Smart UVC™ is the portable UV disinfection
system that precisely measures reflected UVC
emissions with Sensor360™ to automatically deliver the
pathogen-lethal UV dose required for each room,
dynamically compensating for room size, shape and
other dose altering variables such as the position of
contents, windows, blinds and doors.
• TRU-D uses narrow band UVC light for a high efficiency
targeting of the DNA-disrupting wavelength that stops
pathogens.
• TRU-D is safe to use in rooms with glass windows and
doors. UVC is not transmitted through glass windows.
26.
27. XENEX(Hospital Disinfection))
• Pulsed-xenon UV lamp delivers the fastest,
most effective germicidal dose of any UV
system
• Lamp™ system uses reflectors and
movement to focus UV light toward “high-
touch” surfaces
• On-board database logs system activity for
utilization tracking and analysis
• Visible light filter blocks the bright xenon
pulse, so that rooms with interior glass can
be treated without Distraction
• Motion detection system and door guard
ensure the safety of patients, visitors, and
staff.