safer laparoscopy

8/14/2019 safer laparoscopy

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SAFE

LAPAROSCOPY


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Advantages of laparoscopy

I. Small Wounds (minimal access)

Less pain.

Less wound infection.Early ambulation.

Less pulm. compl.

Early resumption of activities.

Better cosmesis.


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II Minimal Invasion

Less exposure less evaporation of body fluids.Fine manipulations less tissue damage lessbleeding and less post op. ileus.

III Better Access and magnification

Oesophageal hiatus, pelvis and porta hepatis.

IV Exploration

Always feasible regardless the type of operation


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DISADVANTAGES OF LAPAROSCOPY

I Needs special training

Long special instruments.

Hand Eye coordination.

II Complicated technologyHigher failure rates.


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III Limited visual field cameraman.

IV Bidimentional picture (no depth).

V Absent touch and grip.

VI Fixed port sites fixed angles of work.VII Difficult control of bleeding:

Absent grip or pack.

Blood on lens.

Blood absorbs light.

VIII Blind steps i.e. veress needle and 1st trocar.


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IX Gas isnufflation under pressure to create a

working space anaesthetic problems.X Instruments are difficult to clean, maintain or

sterilize

XI More expensive

XII Time consuming


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Complications of laparoscopy

I Due to pneumoperitoneum:

1- Surgical emphysema:Subcut., scrotal, preperit, retroperit., omental,

mesenteric and mediastinal.

2- Pneumothorax:

Diaphragmatic or pleural injury

Patent pleuroperit. canal.

3- Air embolism

4- Decreased venous return hypotension + D.V.T.5- Hypercarbia arrhythmia and acidosis.6- Decreased diaphragmatic movements.

7- Spread of malignancy port metastasis .8- Spread of infection to surgeon via conjunctiva .


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II Visceral injuries (0.16 0.27%)

Solid organ or hollow viscus.

Complete or incomplete.

Aetiology:Lack of relaxation.

Forcible introduction of trocar.

small trocar wound.

Full bladder and distended gut.

Adhesions to abd. wall.Thermal injuries esp. monopolar.

Faulty techniques i.e. sharp instruments out of field.


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Diag:

Asp. from veress needle.

Lap. expln.

May be missed.

Post op. drain.

Treatment:

Prophylaxis.

Early recognition.

Repair (lap. or open).


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N.B. Abnormal unexplained bl. or

fluid collection inside the perit. =

??? Injury.


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III Vascular injuries (0.64%):Ant. abd. wall e.g. epig. vs.

Intraabd: liver, omental or mesenteric.

Major vessels: aorta, iliacs or I.V.C.Aet.:

Lack of relaxtion, small trocar wounds, increased force.

Insufficient pneumoperitoneum.

Blunt trocars.

Bad direction of trocars.

Insufficient exposure of instruments tips.

Abnormal vessels: umb. or urachal.

Diag:

Asp. from veress needle.Lap. expln.

Via drain.

May be missed:

Retroperit.

Barometric hemostasis.


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Treatment:

1- Abd. wall:

- Transillumination.- Avoid known vessels.

- Diathermy .

- Compression by foleys balloon.

- Vertical stitches.

2- Intra abd. small vs:- Clipping.

- Coagulation.

- Gauze compression.

3- Large vs.- Immediate laparotomy.


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N.B. Laparotomy Set Should Be Ready In

Every Laparoscopic Procedure.


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IV Nerve injuries:- Common in inguinal and subcostal regions.

- Causalgia, hyposthesia or neuroma.

- Avoided by adequate knowledge of anatomy. e.g. no

stappling of mesh below level of int. ring in

herniorrhaphy.


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Thermal injuries:-Revealed 4-10 d. post op.

-Related to instrument used and surgeonsexperience.

Monopolar diathermy:

-Pt is a part of the electric circuit.

-Current passes in the direction of least

resistance may affect untargetted tissuesspecially if large grip of tissues.

-High heat radiation.

Electric spark furthur injury.


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Bipolar diath:

-Pt. is not a part of the circuit.-New instruments include scissors and hooks.

-High heat radiation.

Laser:

-Expensive.

-Needs special experience.

-Minimal tissue damage.


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Argon beam coagulator:-Spray surface coagulation e.g. suitable for G.B.

bed.

-Minimal penetration.

-Expensive.

-May increase. I.A. pressure.

Endo coagulator:

-Very slow.-Very safe.

-Minimal damage.

Ultrasonic coagulation:-No electric current.

-No smoke.

-Minimal tissue destruction.

-Expensive.-Slower than electrocag.


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HOW TO AVOID THERMAL INJURIES :

1.Choose the most suitable tool for the procedure

2.Use the least possible coagulation power.

3.Cauterize the least amount of tissues at a time.

4.The whole uninsulated shaft of inst. should be under

vision.

5.Multiple short repeated shots are better than a long one.

6.Proper connection & insulation of patient.


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LATE COMPLICATIONS OF LAPAROSCOPY:

1- Port site infection: depends on the procedure:

0.1% in diagnostic lap.

0.25 1% in lap. chole.

2-3% in lap. appendectomy.

Can be reduced by retrieval bags.

2- Port site hernia: 0.1 0.3%:

More with sharp inst. and big incisions i.e. > 10

mm.

Avoided by closure of trocar sites 10 mm or more

e.g by Maciol needles.

3- Int. obst:

Adhesive: less than in open surgery.

Incarceration in port hernia e.g. Richters type.

4- Ascitic fluid leak in liver C. and esp. if a drain is left.


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Proper training programs:

-Theoretical knowledge about laparoscopy, instruments

used, their mode of work & their problems. This should

include technicians & nurses.

-Re orientation about the anatomy seen from a different

angle.

-Aquaintance about practical handling of new instruments.

-Hand eye coordination with the help of pelvitrainers.

-The use of simulators e.g. G.B., appendix, models for

intracorporeal stitching and knotting.

-Full operations on animal models e.g pigs.

-Operating on human patients under strict supervision.

-Continuous training for advanced and new techniques.


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Improvement of vision:-Checking equipments before start.

-Checking connections e.g. a drop of cidex or saline bet. scope

and camera or light cable can lead to failure of procedure.

-Proper placement of scope (not necessarily at the umb.).

-Minimize gas leak.

-The use of 3 chip camera improves colours definition.

-The use of 3D camera with special glasses improves the depth

of picture.

-Higher resolution of camera and monitor improve quality o

picture.

-Thermoflators and antifog soln. can reduce fogging on scope.

-Trained understanding camera man in a team is a must.

-Select the topography of ports to achieve the best angles o

work.

- The use of angled scopes can be of help in special situations.


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How to avoid needle & trocar injuries:

1-Adequate relaxation.

2-Proper choice of site of 1st entry.

3-Lift abd. wall up when introducing veress or blind trocar.

4-Direction towards pelvis or Lt. HC.

5-Evacuate bladder before opn.

6-Do abd. US before opn.

7-Do not use blunt tocars.

8-Safety shield trocars are preferred.

9-The use of VISIPORT to penetrate under vision can help.

10-Open laparoscopy should be an alternative esp. if previous

laparotomy or distended gut.

11-Force should come from wrist not from shoulder i.e. avoid

excess force.

12-Always test veress needle by asp. + drop test.


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GENERAL TIPS:The use of intra operative lap. Us probes can help

differentiate vessels and ducts.

The use of intraop. endoscopy upper or lower can also

add to the safety e.g in achalasia of cardia, H.H or

gastroplasty.

Reusable instruments are better if autoclavable.

Ethylene Oxide gas is an alternative though expensive

.Cidex steilization is better avoided but if recessary it

should be fresh and has sufficient time to work.

Disposable instruments should not be reused.

Patients should be fully monitored during operation

and if necessary procedure should be turned into anopen surgery-

* LAPAROLIFT (gasless laparoscopy ) can be an

alternative to gas insufflation esp. in cardiac pts. or in

those with history of D.V.T.


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SAFETY MEANS

- PROPER TRAINING PROGRAMS.

- PROPER PT. MONITORING THROUGHOUT THE

WHOLE PROCEDURE.

- PROPER STERILIZATION OF EQUIPMENTS &

INSTRUMENTS.

- ACHIEVEMENT OF BEST POSSIBLE PICTURE,

FIELD & VISION.

- AVOIDANCE OF ANY BLIND STEP.

- CONVERSION INTO AN OPEN SURGERY IS NOT

A FAILURE.

safer laparoscopy

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