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1. Pre-operative care
Professor Magdy Amin RIAD
Professor of Otolaryngology.
Ain shames University
Senior Lecturer in Otolaryngology
University of Dundee
2. Pre-operative consultation
• Ensure that indication for operation is still valid.
• Identify any other medical condition.
• Discuss options with patient / relatives.
• Consent.
• Prophylactic antibiotic
• Prophylactic DVT.
• Pain control.
• Nutrition
3. Pre-operative investigations
• FBC :all patients.
• U & E : all patients.
• ECG : all patients > 40 years.
• Chest x-ray : all patients >30 years
• Liver functions : all patients.
• Hepatitis : ?all patients
• Echocardiogram : abnormal ECG, ischemic heart , heart
failure.
• Clotting screen: anticoagulants, abnormal LFTs
• Calcium: Thyroid and Laryngectomy.
• Pulmonary functions: abnormal chest x-ray, partial
Laryngectomy, Oesophagectomy.
6. Airway Examination
Normal
– Opens mouth normally (Adults: greater than 2 finger
widths or 3 cm)
– Able to visualize at least part of the uvula and tonsillar
pillars with mouth wide open & tongue out (patient
sitting)
– Normal chin length (Adults: length of chin is greater than
2 finger widths or 3 cm)
– Normal neck flexion and extension without pain /
paresthesias
7. Airway Examination
Abnormal Exam
– Small or recessed chin
– Inability to open mouth normally
– Inability to visualize at least part of uvula or tonsils with
mouth open & tongue out
– High arched palate
– Tonsillar hypertrophy
– Neck has limited range of motion
– Low set ears
– Significant obesity of the face/neck
8. Airway assessment: predictive tests
Sensitivity = 50-60%
• Mallampati modified test.
Visibility of pharyngeal structures.
• Patil test.
Thyro-mental distance <6.5cm
• Mandibular protrusion.
Class C : inability to protrude lower incisors beyond
the upper.
• Wilson test.
• Radiological assessment of the mandible and
cervical spine.
9. CLASSIFICATION OF OPERATION
Class Definition
• Clean Operations
in which no inflammation is encountered .
The respiratory, alimentary or genitourinary tracts
are not entered.
There is no break in aseptic operating theatre
technique.
10. CLASSIFICATION OF OPERATION
Class Definition
Clean-contaminated Operations
in which the respiratory, alimentary or
genitourinary tracts are entered
but without significant spillage.
11. CLASSIFICATION OF OPERATION
Class Definition
Contaminated Operations
where acute inflammation (without pus) is encountered.
or where there is visible contamination of the wound.
Examples include gross spillage from a hollow viscus during the
operation
or compound/open injuries operated on within four hours.
12. CLASSIFICATION OF OPERATION
Class Definition
Dirty Operations:
In the presence of pus.
where there is a previously perforated hollow
viscus,
or compound/open injuries more than four
hours old.
13. ASA CLASSIFICATION OF PHYSICAL
STATUS
1 =A normal healthy patient
2 =A patient with a mild systemic disease
3 = A patient with a severe systemic disease that limits
activity, but is not incapacitating
4 =A patient with an incapacitating systemic disease that
is a constant threat to life
5 =A moribund patient not expected to survive 24 hours
with or without operation
14. American Society of Anesthesiologists Patient
Classification
ASA 1
• A normal, healthy patient. The pathological
process for which surgery is to be performed is
localized and does not entail a systemic disease.
• Example: An otherwise healthy patient scheduled
for a cosmetic procedure.
15. American Society of Anesthesiologists Patient
Classification
ASA 2
A patient with systemic disease, caused either by the
condition to be treated or other pathophysiological process,
but which does not result in limitation of activity.
Example: a patient with asthma, diabetes, or hypertension
that is well controlled with medical therapy, and has no
systemic sequelae
16. American Society of Anesthesiologists Patient
Classification
ASA 3
A patient with moderate or severe systemic disease
caused either by the condition to be treated
surgically or other pathophysiological processes,
which does limit activity.
Example: a patient with uncontrolled asthma that
limits activity, or diabetes that has systemic
sequelae such as retinopathy
17. American Society of Anesthesiologists Patient
Classification
ASA 4
A patient with severe systemic disease that is
a constant potential threat to life.
Example: a patient with heart failure, or a
patient with renal failure requiring dialysis.
18. American Society of Anesthesiologists Patient
Classification
ASA 5
A patient who is at substantial risk of death within 24 hours,
and is submitted to the procedure in desperation.
Example: a patient with fixed and dilated pupils status post a
head injury.
19. American Society of Anesthesiologists Patient
Classification
E Emergency status
This is added to the ASA designation only if the patient is
undergoing an emergency procedure.
Example: a healthy patient undergoing sedation for reduction
of a displaced fracture would be an ASA 1E
20. co-morbidity and duration of operation
• Risk index 0 = when neither risk factor is
present
• Risk index 1 = when either one of the risk
factors is present
• Risk index 2 = when both risk factors are
present.
21. PROBABILITY OF WOUND INFECTION
BY TYPE OF WOUND AND RISK INDEX
Risk Index
0 1 2
Clean 1.0% 2.3% 5.4%
Clean-contam. 2.1% 4.0% 9.5%
Contaminated 3.4% 6.8% 13.2%
22. Summary of Fasting Recommendations to
Reduce the Risk of Pulmonary Aspiration
• Ingested Material Minimum Fasting Period (hours)
– Clear liquids 2
– Breast milk 4
– Infant formula 6
– Non-human milk 6
– Light meal 6
23. Risk factors for DVT
• Age >40 years
• Obesity
• Varicose veins
• High oestrogen pill
• Previous DVT or PE
• Malignancy
• Infection
• Heart failure / recent infarction
• Polycythaemia /thrombophilia
• Immobility ( bed rest over 4 days)
• Major trauma
27. Pre-operative investigations
• FBC :all patients.
• U & E : all patients.
• ECG : all patients > 40 years.
• Echocardiogram : abnormal ECG, ischemic heart ,
heart failure.
• Liver functions : all patients.
• Clotting screen: anticoagulants, abnormal LFTs
• Calcium: Thyroid and Laryngectomy.
• Pulmonary functions: abnormal chest x-ray, partial
Laryngectomy, Oesophagectomy.
28. Routine Preoperative care for the
Adult Patient
1. Avoid taking aspirin or aspirin-containing
products for 2 weeks prior to surgery unless
approved by physician
2. Discontinue nonsteroidal anti-inflammatory
medications 48 to 72 hours before surgery
29. Routine Preoperative care for the
Adult Patient
3. Bring a list or container of current medications
4. Bring an adult escort who can drive if they are
having an outpatient procedure with sedation or
general anesthesia
5. Wear loose clothing that can easily be removed (eg,
avoid clothing that pulls on and off over the head)
30. Routine Preoperative care for the
Adult Patient
6. Instruct the patient to bathe/shower/shampoo
the evening before or morning of surgery.
Men should be cleanly shaved.
31. Routine Preoperative care for the
Adult Patient
7. Instruct the patient on oral intake restrictions
and medication schedule as ordered:
a. NPO after midnight (including water)
b. NPO after clear liquid or light breakfast if
permitted
c. AM meds with sip of water if ordered by
physician/anesthesiologist
32. before going to the operating room
he/she will have to remove:
• 1. Dentures/partial plates
• 2. Glasses/contact lenses
• 3. Appliances/prosthesis
• 4. Makeup/nail polish
• 5. Hairpins/hairpiece
• 6. Undergarments