Safety Issues in a Medical Laboratory

Clinical Laboratories where bodily fluids are tested canlaboratory safety officer. A safety committee and
be hazardous to the technicians who carry out theincident review committee are formed which analyze
procedures.accidents and maintain procedures. They have
Many people have entered laboratories to give urine,mandatory ongoing safety training for laboratory
blood, stool or other bodily fluid specimens. Not sostaff. They also post signs in prominent places so all
many people have actually been in the room whereare aware of the potential dangers.
they do autopsies on those who died from manyOSHA Occupational Safety and Health Administration
different causes - the morgue.of the United States is the governmental body that
Most laboratories have a room designated as theregulates laboratory safety. Other areas of the
morgue. If family members want to know why theirgovernment that cooperate with OSHA including EPA,
loved one died, an autopsy can be person. This isRRCA, NRC, DOT, US Postal Service, CDC, NIOSH,
usually done by a Pathologist. If there is aNIH and DHS. Amazing how many are involved, and I
questionable death, or suspicion of foul play, aam sure there are even more.
medical examiner may be called in to do the autopsy.A laboratory can at any time be exposed to
Morgues can be like a dirty toilet bowel. Filthycarcinogens, teratogens, mutagens, sensitizers,
conditions can result from the transient traffic ofirritants, hepatotoxins, nephrotoxins and neurotoxins
decomposing bodies, together with potentially(lots of poisons).
dangerous chemicals, lack of adequate ventilation andAs an example of what can happen in a laboratory, a
crowded quarters. I imagine in days gone by,22-year-old science student working in the clinical
morgues lived up to their horror story scenarios.laboratory acquired Salmonella typhi which caused an
They looked like something between a medievalintestinal abscess. Not only did he need antibiotic
torture chamber and a meat locker.therapy, but he required two surgeries for drainage
Back when I was a diener it was not that bad, but itand the creation of an ileostomy.
was quite crowded and only one body could fit inAt another facility, students were hired to clean out
there at a time, except for perhaps a small baby ora closed lab. The students were given minimal
two kept in the refrigerator (sorry, I do not mean toinstructions. They were to move equipment and
offend - that is how it was). I think there were notdispose of chemical and biological wastes. One of the
too many safeguards in place in the 70s, but nowstudents left chemicals out on the bench top at
there are many regulations for those who work in aroom temperature (a no no) while they went to
laboratory or morgue.lunch. Shortly after, the chemicals exploded and a
You may have watched Dr. G. Medical Examiner onterrible odor forced the evacuation of the entire
television (one of my favorites), and seen herbuilding. The students had not been using any
performing autopsies. I have noticed that she doesprotective gear.
not wear much protective clothing or cover on herBefore 1976, sodium azide was used as a
face or hair. Maybe it is all staged, which wouldpreservative in the laboratories. It was disposed of
explain it. They mostly like do not want to cover herdown ordinary plumbing. Lead and copper pipes cause
pretty face and hair.the formation of metal azides which are actually
Morgue Basic Requirementsmore explosive than nitroglycerin. Serious explosions
* Hot/cold running waterresulted and injured several people until it was banned
* Restroomsfrom the laboratory.
* ElectricitySo, if you are thinking about pursuing a career as a
* HVACmedical technologist, pathologist, hematologist and a
* Drainagehost of other jobs, you will be glad to know that
* Parkinglaboratories are much safer now that just a few
* Communicationsyears ago.
* SecureOne example of the guidelines for autopsy personnel
* 5000-8000 square ftis the PPE (Personal Protective Equipment).
In recent years, walk-in refrigerators with doubleThose who transfer the remains from a mortuary
storage space for bodies are being put in thestretcher to the autopsy table should wear gowns
morgues, so twice as many autopsies can beand gloves. Personnel who perform or assist with the
completed at one time. With the potential forautopsy should wear a surgical scrub suit, surgical
disasters, and other situations where increased bodycap, full sleeve impervious gown, eye and face
storage is needed, morgues will be more able toprotection (face shield), shoe covers and surgical
handle them.gloves (double) with an interposed layer of synthetic
One of the most marked changes lately in somemesh cut-proof gloves.
morgues is an observation room, that allows police orFor those who use oscillating saws (to open the
students to view an autopsy. Prior to that, theskull), it is recommended that they wear an
person performing the autopsy was often disruptedair-purifying respirator.
by observers asking questions, or by studentsAll protective clothes must be removed when leaving
fainting from the odors.the autopsy area. Hands should be washed well after
Improved air systems have been designed to controlremoving gloves. In addition, all surfaces where an
the spread of infectious diseases and odors inautopsy was performed must be disinfected with
morgues and clinical laboratories.high level disinfectant. All equipment should also be
Most laboratories appoint an employee to be thecleaned and disinfected.