Sedation technique Flashcards
What can sedation be used to do
- Manage dental treatment phobia
- Suppress the gag reflex
- Reduce anxiety and discomfort for patients undertaking difficult procedures
- Treat patients with anxiety induced medical conditions
- To treat patient with mild to moderate learning difficulties
What are the advantages of intravenous sedation
- Much safer than general anaesthetic when performed correctly
- Is an outpatient procedure
- Patients generally feel a dramatic reduction anxiety
- Generally makes patient more compliant with treatment
- Can make treatment easier due to reduced need to manage anxiety
What is a unique advantage of IV sedation over inhalation sedation
Patients forget most unpleasant experiences in IV sedation
What are the disadvantages of intra venous sedation
- Patients do not always respond predictability
- Retrograde amnesia means patients anxiety isn’t cured
- Not guaranteed that treatment will be possible
- At the second visit patient may think they were asleep in the last visit
- Increased risk of medical complications
- Oral access may be compromised
What are the stages of intravenous sedation
- Pre assessment (separate visit)
- Pre op checks
- Pre op preparation for you and patient
- IV access
- Sedation
- Clinical procedure
- Recovery
What do we need to be monitoring during the clinical procedure under sedation
- BP
- Heart rate
- O2 saturation
What do the pre op checks include
Checking:
1. Equipment
2. Drugs in date, right amount, in correct place
3. staff ready
4. Treatment plan
5. Medical history changes
6. Escort present and appropriate
7. Consent appropriate an sup to date
8. Base line observations
What are the baseline observations we record during pre op checks
- General appearance
- Blood pressure
- Pulse
- Respiratory rate and oxygen saturation
What pre op preparation do you need to do
- Do you have all the equipment required to complete the procedure
- Are you competent enough to do the procedure
- Are the relevant investigation available
- Have you planned for any complications
Can a patient consent once they have had the sedation drug
no
What pre op prep do we need from the patient
- Pre op checks are within acceptable limits
- Patients has fasted as appropriate
- Topical skin anaesthesia if required
- Does pt need a toilet break
- Is pt aware of what is planned for the session
If a pt is diabetic what else might we check pre op
Pre op blood glucose
What drugs do we use for sedation
Midazolam 5mg in 5ml
In regards to the drugs what do we need to prepare post op
- PPE
- Label syringes
- Check drug type, concentration and expiry date
- Draw up saline and midazolam into appropriately labelled syringes
At the LDI what is our preferred concentration of midazolam
1mg per ml
Where can we cannulate for IV sedation
- Antecubital fossa
- Dorsum of the hand
Name the 2 veins we tend to use for IV sedation
- Basilic vein
- Cephalic vein
Talk through the pathway of the basilica vein
- Ascends along the medial surface of the forearm near the elbow
- Changes to a position in front of the medial epicondyle where is is joined by the median cubital vein
- Runs along the medial margin of the biceps muscle to the middle of the upper arm
- Pierces the deep fascia to run alongside the brachial artery becoming the axillary artery
Talk through the pathway of the cephalic vein
- Ascends on the front of the lateral side of the forearm to the front of the elbow
- Ascends along the lateral surface of the bicep muscle to the lower border of the pectorals major muscle
- Pierces the clavipectoral fascia and passes beneath the clavicle
- Terminates in the axillary vein
What does the cephalic vein communicate with
The basilica vein through the medial cubital vein
What are found at the termination of the cephalic vein
Valves
How can valves cause a problem during IV sedation
The sharp angles and calves may hinder her passage of a catheter along the cephalic system
What are the advantages of using the antecubital fossa
- Less vulnerable to vasoconstriction in cold weather
- Usually bigger and well tethered veins which are easier to cannulate
- May be less painful than dorsum of the hand
What are the disadvantages of using the antecubital fossa
- Vein may be less visible particularly with increased BMI
- Brachial artery and median nerve are medial to bicep tendons and we do not want to cannulate this
- May be less obvious if the cannula is incorrectly placed