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Ch 21 · Perioperative Care

Pre-operative Evaluation

Chart review, anesthetic planning, device management.

5 min read

Key Points

  • Review prior anesthesia records — single most useful predictor of difficult airway is prior difficulty.
  • Build the anesthetic around the patient AND the surgery: position, monitoring, lines, blood products, induction, maintenance, emergence, disposition.
  • Pacemaker/AICD: check site of surgery, dependence, last interrogation, magnet effect.
  • Order equipment night before for first cases — anesthesia techs respond to requests placed by ~10 pm.
  • ASA NPO guidelines: 2/4/6/6/8 (clear/breast milk/formula/light meal/fatty meal).

01Chart Review Checklist

  • History & physical, current problem list, medications (esp. anticoagulants, anti-hypertensives, diabetes meds)
  • Relevant comorbidities and recent decompensations
  • Imaging, labs, EKG, ECHO, stress test, PFTs, Holter/Zio
  • Anesthesia tab in chart review — prior anesthetics, airway notes, intraop events
  • Device interrogations (PPM/ICD)
  • Allergies (drug, food, latex, environmental)
  • Social: tobacco, alcohol, substances
  • Functional capacity (METs — > 4 generally adequate)
  • Anesthetic complications in family (MH, pseudocholinesterase deficiency)

02Anesthetic Plan — Framework

1. Procedure - Surgeon, expected duration, positioning (steep T-burg / reverse T-burg → hemodynamic impact) - Surgical approach and expected blood loss

2. Monitoring - Standard ASA monitors - Arterial line / central line / PA catheter / TEE if indicated - Neuromonitoring (SSEP/MEP) — affects choice of TIVA - BIS/Sedline for processed EEG

3. Blood products - T&S vs cross-match based on EBL - Order set: "Intra-operative Blood Product and Lab Orders" - Separate orders to prepare and to send to OR ("call slip")

4. Induction - RSI vs standard - Agent choice given comorbidities - Airway: primary plan + backup plan(s)

5. Maintenance - Inhalational vs TIVA - Analgesia plan (opioid, regional, multimodal) - Anticipated pressors / fluids / labs

6. Emergence & disposition - Smooth vs controlled emergence (e.g., neurosurgery) - Extubation criteria - PACU vs ICU vs floor

03Ordering Extra Equipment

  • Pre-op navigator → Pre-op eval → Equipment requests
  • Requests placed by ~10 pm the night before for first cases will be set up by anesthesia techs for AM start
  • Equipment commonly requested: video laryngoscope, fiberoptic, special-size LMA/ETT, ultrasound, BIS, A-line/CVC kits, rapid infuser, cell saver

04Pacemakers & ICDs

Key questions: - Site of surgery — above umbilicus → risk of EMI interference - Is patient pacemaker dependent? - Type of device, last interrogation - What does placing a magnet do? (varies by manufacturer) - Does device need reprogramming pre/post-op?

General principles: - Bipolar electrocautery preferred over monopolar - If monopolar required: short bursts, lowest energy, grounding pad away from device, return pathway not crossing device - For ICDs: a magnet over the device disables anti-tachy therapy (does NOT change pacing) - For pacemakers: a magnet usually places into asynchronous mode — useful if pacing-dependent and EMI is expected - Have external pacing pads and defibrillator in room - Contact device representative or pacemaker service when in doubt

References & Further Reading

  1. 1
    GuidelineOpen source

    American Society of Anesthesiologists. Practice Guidelines for Preoperative Fasting and the Use of Pharmacologic Agents to Reduce the Risk of Pulmonary Aspiration. Anesthesiology. 2017;126(3):376-393.

  2. 2
    Textbook

    Jaffe RA, Schmiesing CA, Golianu B. Anesthesiologist's Manual of Surgical Procedures. 5th ed. Philadelphia: Wolters Kluwer; 2014.

  3. 3
    Textbook

    Gropper MA, Miller RD, Cohen NH, et al., eds. Miller's Anesthesia. 9th ed. Philadelphia: Elsevier; 2020.

  4. 4
    Textbook

    Adriano A, Morris R, eds. 2021 CA-1 Tutorial Textbook (15th Ed.). Stanford University Medical Center, Department of Anesthesiology.

Citations are provided to direct further study. Always check the most current edition of guidelines and society recommendations — the information in this chapter is a teaching summary, not primary source material.