surgical principles from mbbsbasic
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Basic surgical principles -- Revisited.
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Aseptic techniques
Care and use of instruments
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Aseptic techniquesToo little attention
Broad spectrum antibiotics unjustified security
Lack of proper training to Surgeons Nurses others
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Medico legal aspectsCrime
Act Intention
Voluntarily Dishonestly Corruptly Malignantly Wantonly Rashly and negligently
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VoluntarilyKnowledge
A person is said to cause an effect voluntarily when he causes it by means whereby he intends to cause it, or by means, which, at the time of causing those means, he knew or had reason to believe to be likely to cause it.
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Rashly and negligentlyNot described in IPC
Touching the sterile areas with unsterile hands
Diathermy injuries Keeping the instruments and wet packs
over the perineum Not using Mayo’s trolley
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Theatre dress Pyjamas and shirts – both males and females Shirts to be tucked in. Shoes Cap and masks
Controversial reports. Better to have both. Protect the theatre air from droplets and
desquamated epithelia. Masks should cover the nose and mouth
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Common mistakes Gowning
Improper packing Touching the areas which may come in contact
with sterile areas Cleaning the hands and forearm with gown
Gloving Improper packing Improper wearing Improper conduct
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Wearing gown.Separate towel to dry the hand; if gown
is used for the purpose the lower most edge to be used.
Adjusting the length of the sleeve shall be done with ungloved hand holding in the axilla of the gown.
Other areas shall not be touched with ungloved hand.
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Wearing glovesPresent system of packing makes it
impossible to wear the glove in a proper way.
The parts of the glove which come in contact with the sterile areas shall not be touched with bare hand.
Double gloving is advisable with questionable value.
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After Gowning and gloving One shall not touch unsterile areas, shall
move 30 cm away facing the same One shall not touch sterile areas (other than
the operating field), shall move 30 cm away facing the same
One shall keep the hands up in the level of chest not in the axilla
During painting the surgeon’s gown shall not touch the table.
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Others
Movement shall be kept minimumOne shall not touch sterile areas
shall move 30 cm away facing the sameThe shirt to be tucked in
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Sterile areasSterility is to be ascertained rather than
assumed.One person shall be kept to watch the
sterile area alwaysAny breech in asepsis to be reported
forthwith.
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Sterilization Methods
Heat Moist heat Hot air Boiling ?
Chemical Activated gluteraldehyde Formalin vapour Ethylene oxide gas
Radiation
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Moist heat Steam under pressure
Autoclave Advantages
Easiest,safest, surest Fastest Least expensive Automatic Many items withstand repeated processing
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AutoclaveDisadvantages
Preparation and package to be careful Item must be clean and free from grease
and oil Steam must have direct contact with all
areas of an item Timing depends on material and load
chance of human error Impurities in water (steam)
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Boiling NOT a method of sterilization. But can be
used as a disinfectant. Vegetative forms are killed in few minutes at
54 to 65oC. Certain bacterial spores will withstand 115oC
for 3 hours! No living things can survive saturated steam
at 121oC longer than 15 minutes.And hence autoclaving.
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Dry heatAnhydrous oils petroleum products, bulk
powders
DisadvantageLong exposure period.
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Autoclaving Instruments not destroyed by heat.
Blunt stainless steel instruments, gloves, tubes, aprons and drapes.
Sharp instruments not to be autoclaved.Tubes to be filled with water Trays to be separated by gauze
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Activated gluteraldehyde
ADVANTAGESNon-corrosive Low surface tension.Not absorbed by rubber or plastics.Low volatility.Active at room – temperature
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Activated gluteraldehyde
DISADVANTAGESBuffer to be added for activation.Gradually loses effectiveness.May cause skin irritation.Mild odour.
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Activated gluteraldehyde
For instruments which are destroyed by heat
Bactericidal, pseudomonacidal, Fungicidal and Virucidal in 10 minutes. Disinfection only !
Tuberculocidal in 45 minutes.Sporicidal in 10 hours.
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Formalin chamberTo sterilize items which are destroyed
by heat Scopes, diathermy cables, etc.
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Ethylene oxideEffective agent to sterilize items which
are destroyed by heat.Cannot be used in a hospital set up.Pre-sterilised in factory set up and
supplied Syringes, needles, plastics etc.
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RadiationEffective agent to sterilize items which
are destroyed by heat.Cannot be used in a hospital set up.Pre-sterilised in factory set up and
supplied.No residual radio activity.
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Instruments Identify the instrument. Know the method of sterilization.Know the use.Know the method of use.Don’t use it for other purposes.
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Use of instrumentsCurvature of instrument should follow
the curvature of the hand.Only one ratchet lock should be applied.Cleaning ideally by ultrasonic waves.Light detergent may be used.
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Mosquito Artery forcepsUses
To catch a bleeding point DON’T use it for
Ligature Dissection Holding gauze, mops, towels.
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Artery forceps - UsesTo Hold a bleeding point / blood vessel.For blunt dissection.Ligature.DON’T use it for
Extracting needle from tissues. Holding towels. To open bottles. To hold sponge.
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Needle holder – UsesTo hold a curved needle.To extract a needle from the tissue.To ligate.DON’T use it as a bone nibbler.
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Mayo’s Scissors - Uses To cut tissues other than skin, bone and
tendons. Push cutting is useful not only to tailors but to
surgeons also. To do blunt dissections. Don’t use it for cutting suture material, gauze,
pad. Metzenbaum Scissors to be used for delicate
tissues.
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Alli’s forceps andother tissue holding forceps
They are tissue forceps.To hold delicate tissues.DON’T use it for
Holding the towel. Holding the apron of surgical team.
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Intestinal occlusion clampTo occlude the lumen of intestine and
the blood vessels.Two or three ratchet locks may be
applied.DON’T use it for
Holding skin grafting blade/razor blade
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Anaesthesia screenMust to prevent contamination.
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RecordingAccurate recording of the procedure
Will help to conduct studies – both prospective and retrospective.
Is important in medico-legal aspects. Help in surgical audit.
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DoorsSliding doors are to be used.Opening and closure shall be kept
minimum.Traffic in and out of theatre to be
minimum
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MirrorMirror should be kept in the scrub area.This will facilitate the surgical team to
adjust the cap and mask correctly before scrubbing.
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Circulating nurseThere shall be a circulating nurse.Presently the job is done by nursing
assistants and attendants Nursing assistants and attendants are
un-qualified to handle sterile things.
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Mayo’s trolleyThe most versatile equipment.Unfortunately not used in our hospital.Advantages
Prevent contamination of instruments. Prevent injuries to the patient. Provide an easy access to instruments.
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Theatre head nurseMost powerful person of the theatre.Responsible for theatre discipline Maintains stock of medicines and
equipments Ascertains asepsis Supervises the nursing staff
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T h a n k Y o u
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Medical Powerpoints
from mbbsBasic