Pediatric Sedation Flashcards
Define sedation as per International Committee for the Advancement of Procedural Sedation (ICAPS)
The International Committee for the Advancement of Procedural Sedation (ICAPS) defines procedural sedation as follows: “The practice of procedural sedation is the administration of one or more pharmacological agents to facilitate a diagnostic or therapeutic procedure while targeting a state during which airway patency, spontaneous respiration, protective airway reflexes, and hemodynamic stability are preserved, while alleviating anxiety and pain”.
What does “Continuum of sedation” mean?
○ It implies that with an increase in drug administration (i.e. by increasing dosage or combining different drugs), the likelihood of advancing to the next level of sedation is increased. Patients may reach a deeper-than-intended level of sedation with accompanying adverse effects.
○ The level of sedation is also affected by drug interactions and the individual’s pharmacogenetic profile.
What are the different levels of sedation?
- minimal sedation or anxiolysis
- moderate sedation/analgesia
- deep sedation/analgesia, and
- general anaesthesia.
What is minimal sedation/anxiolysis?
What are the physiologic end points?
○ Minimal sedation/anxiolysis is a drug-induced state during which the patient responds normally to verbal commands.
○ This level is sometimes referred to as “changing the mood” of the patient.
○ Cognitive function and physical coordination may be impaired, but airway reflexes, and ventilatory and cardiovascular functions are unaffected.
What is moderate sedation?
What are its physiologic endpoints?
○ Moderate sedation/analgesia is also termed “conscious sedation”. This is a drug-induced depression of consciousness during which purposeful response to verbal commands (either alone or accompanied by light tactile stimulation) is maintained.
○ Interventions are not usually required to maintain a patent airway and spontaneous ventilation is adequate. Cardiovascular function is usually maintained.
○ There are societies that believe that dissociative sedation (i.e. using ketamine) should also be part of the sedation continuum and falls between moderate and deep sedation/analgesia.
What is deep sedation?
Whatare the physiologic responses?
○ Deep sedation is a drug-induced depression of consciousness during which patients cannot easily be roused, but may respond purposefully following repeated or painful stimulation.
○ Reflex withdrawal from a painful stimulus is not considered to be a purposeful response.
○ Deep sedation may be accompanied by clinically significant ventilatory depression.
- Assistance with maintaining a patent airway and positive pressure ventilation may be necessary.
- Cardiovascular function is usually maintained.
○ This level of sedation is termed “monitored anaesthesia care (MAC)” in certain international sedation guidelines
Who should administer deep sedation
In South Africa, deep sedation and analgesia should only be performed by trained doctors with experience in the field of anaesthesia, in accordance with the SASA Practice Guidelines 2018 (available from http://www.sasaweb.com). This is especially true for sedation in children.
What is general anaesthesia?
○ This is a drug-induced loss of consciousness during which patients cannot be roused, even by painful stimulation.
○ The ability to maintain independent ventilatory function is impaired.
○ Patients require assistance in maintaining a patent airway, and positive pressure ventilation may be required due to the depression of spontaneous ventilation or a drug-induced depression of neuromuscular function.
○ Cardiovascular function may also be impaired.
Define Non-dissociative sedation
○ Non-dissociative sedative drugs (including opioids, benzodiazepines, barbiturates, etomidate and propofol) operate on the sedation dose–response continuum.
○ Higher doses provide progressively deeper levels of sedation with possible respiratory and cardiovascular compromise, central nervous system depression and unconsciousness.
○ With the use of non-dissociative drugs, the key to minimising adverse events is the careful titration of drugs until the desired effect is reached.
Define Dissociative sedation
○ Dissociative sedation (as seen with ketamine sedation/analgesia) causes a trance-like cataleptic state characterised by intense analgesia, amnesia, sedation, retention of protective reflexes, spontaneous breathing and cardiovascular stability.
○ When ketamine is administered in doses appropriate for PSA, loss of consciousness is unlikely.
○ As stated earlier, some practitioners believe that dissociative sedation should be part of the PSA continuum, and would fit in between moderate and deep sedation.
Whare are the main categories of Sedation techniques
Basic or standard sedation
Advanced sedation
What is the “Basic techniques of sedation”?
Provide examples.
It is defined as sedation induced by a single agent and not a combination of several agents, for example:
• oral, transmucosal or rectal drugs (e.g. a small dose of an oral benzodiazepine, usually midazolam)
• inhalation of nitrous oxide (N2O) in oxygen, where the concentration of N2O must not exceed 50% in oxygen, or
• titrated intravenous doses of midazolam to a maximum dose of 0.1 mg/kg.
Define “Advanced sedation” technique
Provide examples
Advanced sedation can be defined as sedation induced by one of the following techniques:
• any combination of drugs, administered by any route,
• any sedation administered by the intravenous route (e.g. propofol, etomidate, dexmedetomidine – with the exception of titrated doses of midazolam to a maximum of 0.1 mg/kg),
• any inhalational sedation (e.g. sevoflurane), with the exception of N2O used as the sole agent in a concentration not exceeding 50% in oxygen, or
• any infusion techniques (i.e. target-controlled infusions [TCIs]).
Advanced sedation techniques:
• can include both dissociative and non-dissociative techniques,
• should only be performed by SPs who have had supervised clinical training and life support training in paediatric sedation, and
• require the attendance of a dedicated SP and should not be performed by operator-SP
Define “Failed sedation” and give reasons for it?
○ It is defined as the failure to achieve the desired level of sedation for the
procedure to be completed safely, such that the procedure has to be abandoned or the need arises to convert to GA.
○ Possible reasons for failed sedation include inadequate presedation assessment of the child, patient factors (i.e. children with special needs), drug factors or procedure-related and operator factors.
○ A previous episode of failed sedation may necessitate consideration for future procedures to be performed under GA instead of sedation.
Define “Prolonged sedation”
○ It is recommended that in children, any sedation for procedures performed outside of a hospital and lasting more than 1.5 hours
is considered prolonged sedation.
○ Even though this approach may not be practical, these procedures should probably best be staged into two or more separate procedures.
○ Alternatively, the recommendation for procedures expected to last more than 1.5 hours, is to perform the procedure under GA in-hospital.
Practice appraisal protocol for paediatric sedation: General requirements
- Does the practice provide basic intravenous sedation, e.g. midazolam only?
- Does the practice provide advanced intravenous sedation techniques (combination of drugs)?
- Does the practice provide inhalation sedation (IS)?
- Do children aged 12 years and younger receive intravenous sedation at the practice? If yes, which drugs are used?
- Are sedation patients only ASA I or II? Do you do any fragile ASA II patients under sedation? Do you do any ASA III patients?
- Does the practice only use operator-sedation practitioners? Which drugs are they using for sedation?
- Does the practice normally operate with a separate sedation practitioner (dedicated)?
- Is the practice in good standing with the HPCSA?
What are Basic question to ask about the establishment providing sedation to ensure patient safely?
1 Do the premises appear to be well maintained?
2 Are the recovery and waiting areas separate, or the procedure room used as the recovery room?
3 Is there good lighting and ventilation in all clinical areas?
4 Is there access for emergency services to the building?
5 Is there access for emergency services to the surgery?
Do you have a wheelchair available to transport patients?
6 Is there space within the surgery to deal with an emergency?
7 Is there space within the surgery for the sedation practitioner to work effectively and do resuscitation if necessary?
8 Does the practice layout provide privacy for sedation of patients?
9 Can the dental or equivalent chair be placed in the head-down tilt position where applicable?
10 Are there facilities for a parent/caregiver to accompany their child while sedation is commenced?
Practice appraisal protocol for paediatric sedation: Sedation practices
- Does the practice follow a recognised sedation protocol?
- Are patients normally assessed for suitability for sedation at a preceding
appointment or during day of surgery? - Are there possible options for anxiety and pain control explained to the patient prior to obtaining consent for sedation?
- Do parents/caregivers have the opportunity to ask questions?
- Are blood pressure and pulse oximetry assessed as part of the patient assessment and documented?
-Is capnography used in the practice? - Is the patient monitored by a trained and experienced member of staff, during sedation and recovery?
- Does the practice prohibit parents/caregivers from remaining in the surgery during the procedure?
- Are recognised discharge criteria followed?
- Where are patients normally recovered?
- Does the sedation practitioner or trained staff discharge the patient?
- Are patients given a telephone or cell phone number to call in case of problems or complications?
- Does the practice ensure that all children have a responsible adult accompanying them home and to take responsibility for after-care at home?
-Which mode of transport will the child and accompanying adult use? - Is there an agreed protocol with the local hospital and paramedics in case of an emergency?
Practice appraisal protocol for pediatric sedation: DOCUMENTATION
- Are parents/caregivers given written preoperative instructions?
- Are parents/caregivers given written postoperative instructions?
- Are the following noted and checked prior to sedation?
-Medical, dental and social histories: medical history questionnaire
-Previous sedations/general anaesthesia
-ASA category
-Fasting
-Preoperative vital signs (including BP)
-Treatment required
-Information to the patient regarding the procedure
-History of allergies - Is written informed, valid consent for sedation and the procedure obtained prior to sedation?
-Is this sometimes changed during sedation? - Is a contemporaneous record (sedation flow chart) kept of the administration of sedation?
- Do sedation practitioners keep a logbook or records of sedation cases?
Practice appraisal protocol for paediatric sedation : Equipment
- Is there equipment for measurement of blood pressures and oxygen saturation values?
- Is there a dedicated Inhalation Sedation (IS) machine? Does this have the
following?
- Minimum delivery of 30% O2
- Emergency N2O cut-off - Is the IS machine checked by a suitably trained and qualified member of staff prior to each session?
- Is there scavenging of waste gases?
- Is the equipment serviced according to the manufacturers’ guidelines?
- Are the gases stored according to current safety requirements?
- Date of last service?
- Is a pulse oximeter available?
-Is an ECG monitor available?
-Is a capnograph available?
-Are they all being used to monitor the patient? - Does the pulse oximeter have audible alarms?
- Is the equipment serviced according to the manufacturers’ guidelines?
- Date of last service?
- Is emergency oxygen available? What is the size of the cylinder? Is there a back-up supply/cylinder?
- Is there a self-inflating bag valve mask with reservoir bag for children (e.g. Ambu-bag)?
-Is there a 40% oxygen mask?
-Is there a rebreathing bag? - Is there a pocket face mask (e.g. Laerdal pocket mask) to provide assistance with ventilation?
- Is there a set of nasal cannulae available?
- Is suction available and in working order? How often is suction cleaned and checked?
- Is back-up suction available?
- Is a laryngeal mask available?
- Are Yankauer suckers available?
- Is a defibrillator available?
- Is an AED available?
- Date of last service?
- Is the emergency equipment readily available? (SASA guidelines)
Practice appraisal protocol for paediatric sedation: DRUGS
- Are emergency drugs immediately available? (see SASA guidelines)
-Which ones do you have? - Are all drugs, sedation and emergency, in date?
- Is there a designated person responsible for stock control?
- Are all emergency drugs readily available?
STAFF
- Names and qualifications of all dentists, doctors and nursing staff involved in sedation practice at this address. Do they all have airway certification?
Please supply details. - Can all staff demonstrate in-house training in sedation, as well as a commitment to continuing professional education? Give details.
- Can all nurses assisting demonstrate in-house training in sedation?
- Can all recovery staff (if applicable) demonstrate training appropriate to their duties?
- Is all staff trained in at least BLS (airway certification)?
- How often is emergency training provided? Give dates.
- When was the last emergency training session?
- Is the facility suitable to provide moderate sedation and analgesia?
If no, the following observations would need to be addressed for successful
practice appraisal: