18.10.2025
Reading time:
10 minutes

ONO Anesthesia Guideline

Operational indication, planning, communication

Dr. Valery Vinzent Wittwer

Surgical Indication and Planning

indication
  • As soon as surgery is necessary, the procedure, including premedication, must be defined.
  • Depends on:
    • Type of procedure
    • surgeon
    • Patient/Morbidity
Coordination with family doctor/ specialist
  • During elective surgery, check whether medications (e.g. anticoagulants):
    • stopped or
    • must be bridged
  • Consultation with a family doctor or cardiologist, for example
Role of the anesthetist
  • Usually only involved on surgery day
  • Surgeon/indicative doctor is responsible for:
    • Operational planning
    • premedication
    • Communication with general practitioners/specialists
Need for documents from a family doctor
  • patient < 70 years, ASA I—II: usually not necessary
  • Patient > 70 years of age or ASA II—III: documents/approval from family doctor makes sense

Clarifications by the family doctor/specialist

If necessary (see above), family doctors will receive a “general practitioner form”

Laboratory at
  • coagulation disorders
  • known kidney pathology
  • known hepatobiliary pathology
ECG at
  • ≤ 6 months with a positive cardiac history
  • Current ECG for new cases of cardiac disease
  • (RX thorax is not necessary)
anticoagulation
  • Do not discontinue for cataract surgery
  • Quick ≥ 70% (INR ≤ 1.2) for retinal (e.g. pars plana vitrectomy) and glaucoma surgery (trabeculectomy, deep sclerectomy), blepharoplasty, entropion, ectropion and ptosis surgery, lacrimal tract surgery
  • Quick ≥ 50% (INR ≤ 1.5) for MIGS (including XEN® implantation)
Weight loss drugs

Active substances in the GLP1 agonist group (e.g. Ozempic, Wegovy, Mounjaro) lead to gastric emptying disorders, which significantly increases the risk of aspiration during anesthesia.

  • Discontinue medication before general anesthesia or analgosedation
    • Weekly injections: 7 days before surgery
    • Daily injections or tablets (e.g. Victoza, Saxenda): 24 before surgery

Communication with the patient

All patients receive the “Information sheet before eye surgery” before surgery

Sober
  • Eat up to 6 hours before, nothing after
  • Drink only clear up to 2 hours before, nothing more after 2 hours
  • Don't smoke
medicines
  • Take usual tablets as discussed
escort
  • Bring adults home
sanitation
  • Remove makeup & mascara
  • Remove jewelry
  • Emptying the bladder
Emergencies at home
  • Severe vomiting, urinary retention, severe pain, fever >39 °C → contact a doctor/clinic immediately

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