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Air quality control in reproductive laboratories: How important it is and how to implement, measure and control
1. Air quality control in
reproductive laboratories
How important it is and how to implement,
measure and control
4th International Congress - Academy of Clinical Embryologists
18-20 September 2015, Kochi INDIA
Sandro C. Esteves, MD., PhD.
Medical & Scientific Director, ANDROFERT
Andrology & Human Reproduction Clinic
Campinas, BRAZIL
2. Outline
1. Importance of air quality in IVF
2. How to implement
3. How to measure and control
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
S ESTEVES, 2
2015
ANDROFERT
3. Morbeck, JARG 2015; 32(7):1019-24.
IMPORTANCE OF AIR QUALITY IN IVF
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
4. IMPORTANCE OF AIR QUALITY IN IVF
25.0%
32.7%
14.1%
43.1%
Miscarriage rate
CPR
General IVF Population (N=468)
Cleanroon IVF lab (Central HVAC with particle + VOC filtration)
Standard IVF lab equipped with portable filtration units
P=0.01
P=0.03
Esteves et al. Fertil Steril 2004
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
5. CPR
Miscarriage rate
36.9%
23.0%
47.1%
15.0%
Severe Male Factor Infertility (N=399)
Standard IVF lab equipped with portable filtration units
Cleanroon IVF lab (Central HVAC with particle + VOC filtration)
Esteves et al. Fertil Steril 2006
IMPORTANCE OF AIR QUALITY IN IVF
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
6. Van Voorhis et al. (F&S 2010)
At least 7 of 10 consistently high-performing IVF centers
in the USA used filtered laboratory air with HEPA and
chemical, solid-phase filtration for VOCs
Munch et al. (JARG 2015):
Inadvertent removal of carbon filters resulted in
significant drop of KPI
Heitmann et al. (RBM Online 2015):
Central HVAC (Particles + VOC) vs. Portable Units
Higher IR (32.4% vs. 24.3%; p<0.01)
Higher LBR (39.3% vs. 31.8%; p<0.05)
RECENT EVIDENCE
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
7. Importance of Air Quality in IVF
Summary
ANDROFERT
ü High levels of VOC in unfiltered IVF lab air
ü Mouse and human embryo development inversely
correlated with VOC levels
ü Efficient particle and VOC removal by dedicated air
filtration systems
ü Better IVF outcome (PR, IR, miscarriage) in
laboratories with air particle and VOC filtration
ü Central HVAC seems to work better than portable
systems
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
8. What regulatory agencies ask for
ANDROFERTANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
9. Social responsibility to
protect public health
from exposure to harm,
when scientific
investigation has found a
plausible risk even
though a scientific
consensus had not been
reached
PRECAUTIONARY
PRINCIPLE
*Convention on Biological Diversity, UN 1992;
Ratified by 192 countries and the EU, except
USA, Andorra and South Sudan
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ANDROFERT
10. Region
(directive)
European Union (EU directive
2004/23/EC; 2006/86/EC)
Brazil (Anvisa
RDC33/2006;
RDC23/2011)
Particle
filtration
Equivalent to GMP Grade A air
quality in the critical areas with a
background environment at least
equivalent to Grade D (exceptions
apply)
At least equivalent to
ISO class 5 (NBR/ISO
14644–1) in the critical
areas
Microbial
contamination
Microbial colony counts equivalent
to those of Grade A as defined in
the current GMC guide with a
background environment at least
equivalent to Grade D
Microbiological
monitoring required;
specifications not
defined
Volatile organic
compounds
filtration
Not required Ventilation systems
should be equipped with
filters imbedded with
activated charcoal
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
Reviewed by Esteves & Bento, RBM Online 2013.
11. CONTAMINATION
Any undesirable material or
substance that may affect the
quality of final product
Contaminants are
generated by
laboratory
personnel,
processes, furniture
and equipment
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
Indoor air
Personnel
Material and
Equipment
Cell, tissue
and fluids
12. 1. Airborne particles
Residues of cleaning
agents and clothing, skin
shedding; temporary
suspension; 1< µm <100
2. Microorganisms
Viruses, spores, bacteria;
constant suspension in air;
size <1 up to 8µm
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
Contamination
13. CONTAMINATION
3. Indoor Volatile Organic Compounds
Chemical compounds that evaporate and react
with indoor ozone
Result in submicronic particles and harmful by-
products (eg. toluene, benzene, alcohols, acetone,
refrigerating gases, aldehydes)
Cigarette smoke, automobile exhaust, detergents, lubricants,
dyes, furniture, rubber, plastics, resins, synthetic fibers,
nylon, particle-board, plywood
Some are genotoxic/mutagenic
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
14. VOC in REPRODUCTIVE LABORATORIES
0
1000
2000
3000
Outside Air
Indoor IVF
Lab Air
533
2769
5-fold increase
in VOC
Anderson et al. 1997
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
15. HOW TO PROTECT GAMETES AND EMBRYOS
FROM CONTAMINATION
Bacteria and other
contaminants can attach
themselves to particles, a
decrease in particles equates
to an increase in air quality Pre-Filters: >10µ
Fine dust filters: 1<10µ
HEPA filters: 0,3µ = 99,97%
Removal of air particulates by forced air
movement using positive air pressurization
through a series of filters with increased efficiency
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
16. Particle size/m3 of air: ISO 14.644-1
0.3 µM
0.5 µM
1 µM
5 µM
ISO 1
ISO 2
10
4
ISO 3
102
35
8
ISO 4
1,020
352
83
IVF
lab
ISO 5
10,200
3,520
832
29
ISO 6
102,000
35,200
8,320
293
OR
ISO 7
352,000
83,200
2,930
Transfer
ISO 8
3,520,000
832,000
29,300
ISO 9
35,200,000
8,320,000
293,000
CLEAN ROOM
CLASSIFICATION
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
17. VOCs are 100–1000x smaller
than the effective pore size of
HEPA filters
Spaces between the carbon
particles contain a cloud of
delocalized electrons that act as
electronic glue to chemical
contaminants
Alcohols and ketones are
oxidized and thereby
detoxified by potassium
permanganate
HOW TO PROTECT GAMETES AND EMBRYOS
FROM CONTAMINATION
Removal of VOCs by forced air movement
using positive air pressurization through a
series of filters containing activated carbon
and potassium permanganate
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
18. ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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2015
ANDROFERT
PORTABLE SYSTEMS
HEPA
filter
VOC
filter
Pre-
filter
19. Central HVAC SYSTEMS
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
20. BEFORE IMPLEMENTATION
Risk assessment analysis
• New or existing facility
• Age and size of laboratory
• Equipment/furniture (low off gassing?)
• Constructing materials
• Atmospheric air pollution
• Disposable materials (storage location)
• Human activity
No. per workspace,
Use of protective clothing
Cosmetics, etc.
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ANDROFERT
22. AIR-HANDLING VENTILATION SYSTEM
(with carbon + KMnO4 filtration)
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
24. ISO 5 Cleanroom IVF lab + Chemical filtration
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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25. ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ISO 5 Cleanroom IVF lab + Chemical filtration
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33. ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
34. LAYOUT AND
CONSTRUCTION
In situ wet construction
Low off-gassing materials
Surfaces and Coatings
Lighting fixtures
Flush-mounted and sealed
Coved junctures
Stainless steel & aluminum
Furniture, doors, windows,
air vents, workstations
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
35. 0
50
100
before after
% TQE
0
20
40
before after
% miscarriage
0
50
before after
% LBR2.3
3.2
Average No. Top Quality Embryos ET
Conventional lab (with portable
filters)
Cleanroom lab (Central HVAC with
particle & VOC filtration)
P=0.01
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
N=2,315
cycles
36. Cumulative live birth rates
40.4% 48.0%
ANDROFERT, Referral Center for Male Reproduction
ET #3
(FET) 49
ET #2 (FET)
239
ET #1 (fresh)
822
50.5%
+18.8%
+25.0%Female
Age
≤38
ANDROFERT
332/822 63/239 17/49
37. HOW TO MEASURE AND CONTROL
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
38. TEST EQUIPMENT
Air volume flow rate Termoanemometer
Air exchange rate Termoanemometer
Air and room
pressure differential
Microanemometer and
balometer
HEPA-filter integrity
leak
Aerosol generator
Airborne particle
counts
Electronic particle counter
Recovery
performance
Smoke generator
Lighting level Luxmeter
Noise level Decibelmeter
Temperature and
humidity
Thermometer and
hygrometer
Third-part certification company (CCL, Brazil); semi-annually
IEST 006.2 standards
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
39. TEST
Air volume flow rate
Air exchange rate
Air and room
pressure differential
HEPA-filter integrity
leak
Airborne particle
counts
Recovery
performance
Lighting level
Noise level
Temperature and
humidity
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
40. ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
41. Settle plates
Mold and blood-agar Petri dishes
Surface sampling
Swabs and contact plates
Five-finger glove printing
Incubators, workstations, air, floor, wall
Limits Colony Forming Unites (CFU)
Settle plates
(90mm
diameter)
CFU/4 hours
Contact
plates
(55mm
diameter)
CFU/plate
Glove
print
CFU/
glove
<3 <3 <3
Microbiological
Monitoring
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
42. VOC Monitoring
1. Activated-carbon life-time
estimates
Carbon tetrachloride activity method
2. Active air sampling on Tenax TA
sorbent and 2,4 dinitrophenyl
hydrazine
Summa canisters; Thermal desorption
Gas chromatography (Limits <2 mcg/m3 TVOC)
3. Direct reading
Snapshot reading using VOC probes
Photo ionization detector
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
43. Esteves & Bento. RBM Online 2013
ü APPROVED
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
44. Key messages
1. Air quality (particulate matter and VOC)
associated to in vitro embryo development in
animal and human studies
2. Regulatory agencies have issued Directives
with specific requirements for air quality in IVF
labs based on precautionary principle
3. Air cleanness in IVF should integrate both
particulate matter and VOC filtration
ANDROLOGY AND HUMAN REPRODUCTION CLINIC - REFERRAL CENTER FOR MALE REPRODUCTION
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ANDROFERT
45. Key messages (2)
4. Risk assessment analysis needed before
implementing air quality control to IVF units
5. Validation “in operational state” after
AQC implementation
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ANDROFERT
6. Ideally, measure and control should be
guided by third-part certification
companies
46. Thank you
This presentation is available at
http://www.slideshare.net/
sandroesteves
4th International Congress - Academy of Clinical Embryologists
18-20 September 2015, Kochi INDIA