Medical History Assessment and Optimization
Comprehensive Medical Questionnaire: Complete medical history assessment begins weeks before scheduled surgery when possible. Clinicians should ask about: prior surgical complications (excessive bleeding, delayed healing, infection), anesthetic reactions (particularly malignant hyperthermia), cardiovascular conditions (hypertension, angina, myocardial infarction history, arrhythmias), respiratory conditions (asthma, COPD), metabolic conditions (diabetes, thyroid disorders), autoimmune conditions, bleeding disorders, and current medications including supplements and herbal products.Detailed medication history including dosing, frequency, and indication is essential. Patients often omit medications they believe "unrelated" to surgery; clinicians must specifically ask about: anticoagulants (warfarin, DOACs, aspirin), antiplatelets (clopidogrel, ticlopidine), NSAIDs, antihypertensives, antiarrhythmics, corticosteroids, anticonvulsants, and herbal products (particularly products affecting hemostasis like ginkgo, garlic, ginger, omega-3 fish oil).
Cardiovascular Risk Assessment: Patients with history of myocardial infarction, coronary artery disease, arrhythmias, or substantial cardiac risk factors require cardiovascular risk assessment. Current guidelines recommend EKG in patients >55 years with significant cardiac disease or multiple cardiac risk factors. Patients with recent myocardial infarction (<6 months) require clearance from cardiologist; procedures should be deferred minimum 6 weeks post-infarction (ideally >12 weeks) unless absolutely emergent.Blood pressure should be assessed at pre-operative visit; elevated BP (systolic >180 mmHg or diastolic >110 mmHg) warrants deferral of elective procedures pending BP control. Hypertensive patients on chronic medications should continue antihypertensive therapy morning of surgery; abrupt discontinuation increases cardiovascular complications risk.
Diabetes and Glycemic Control: Diabetic patients require assessment of current glycemic control. Fasting glucose >250 mg/dL (or random glucose >300 mg/dL) indicates suboptimal control warranting preoperative glucose management optimization. Hyperglycemia impairs immune function, reduces collagen synthesis, and increases infection risk 3-4 fold. Perioperative glucose targets of 140-180 mg/dL demonstrate optimal balance between hyperglycemia complications and hypoglycemia risk.Type 1 diabetic patients should check fasting glucose morning of surgery and adjust insulin accordingly (typically 50% dose reduction morning of surgery with monitoring). Type 2 diabetic patients on oral medications should hold metformin morning of surgery (particularly with procedures involving radiographic contrast or extended fasting) due to lactic acidosis risk; other oral agents typically continue. Patients on insulin should be advised to check glucose prior to surgery and adjust dosing.
Respiratory Assessment: Patients with asthma history should bring rescue inhalers to procedures (though rescue inhalers are generally not needed for local anesthetic procedures). Patients with COPD on home oxygen should continue oxygen therapy; clinicians should be prepared to provide supplemental oxygen during and after procedures as needed.Medication Management Perioperatively
Anticoagulant and Antiplatelet Management: Patients on warfarin anticoagulation for atrial fibrillation, venous thromboembolism, or mechanical valves require individualized management. For minor oral surgery (extractions, implant placement), continuing warfarin typically proves safer than discontinuation because thromboembolism risk exceeds bleeding risk. INR should be assessed within 24 hours of elective surgery; target INR of 2-4 is acceptable for minor oral surgery. Most minor oral bleeding is controlled through local measures (pressure, hemostatic agents, sutures).For procedures carrying higher bleeding risk (extensive osseous surgery, implant placement requiring substantial bone removal), warfarin continuation versus temporary discontinuation should be discussed with patient's cardiologist. If warfarin is discontinued, bridging anticoagulation (enoxaparin 40 mg twice daily subcutaneously) is often used 48 hours before and after surgery.
Patients on aspirin (81-325 mg daily) for cardiovascular prophylaxis should continue aspirin preoperatively and postoperatively. Aspirin provides antiplatelet benefit and should not be discontinued for minor oral surgery (discontinuation increases cardiovascular risk >3 fold, while bleeding risk increase is modest). NSAIDs interfere with aspirin's antiplatelet effect; if NSAIDs are needed postoperatively, timing should ensure NSAID administration after aspirin dose intervals allowing aspirin effect to persist.
Direct oral anticoagulants (DOACs: apixaban, rivaroxaban, dabigatran, edoxaban) should generally continue perioperatively. These agents are rapidly reversible (unlike warfarin) and continuation typically proves preferable for minor oral surgery. Specific agent should be identified and dosing/timing confirmed with patient's provider.
Clopidogrel (Plavix) and Ticlopidine: These antiplatelet agents should generally continue through minor oral surgery unless specifically instructed by cardiologist to discontinue. Premature discontinuation increases acute stent thrombosis risk dramatically (10-25 fold increase in first weeks after discontinuation). Continuing these agents increases bleeding risk modestly but acceptably for minor oral surgery. Corticosteroid Supplementation: Patients on chronic corticosteroid therapy (oral prednisone or equivalent) require perioperative supplementation due to suppressed adrenal function. Patients on corticosteroids >7.5 mg daily equivalent for >2 weeks have suppressed HPA axis and require supplemental corticosteroids. Guidelines recommend adding 25 mg hydrocortisone IV immediately preoperatively for minor surgical procedures, continued postoperatively if extended recovery period anticipated. NSAID Therapy Continuation: NSAIDs should generally be held 24-48 hours preoperatively if possible due to increased bleeding risk. However, abrupt NSAID discontinuation in patients with arthritis, rheumatologic conditions, or chronic pain may worsen symptoms. If NSAIDs are continued preoperatively, timing to allow 24-48 hours washout before surgery is preferable; if washout is impossible, increasing perioperative hemostasis measures (local anesthetics with epinephrine, hemostatic agents, sutures) compensates for slightly increased bleeding risk.Antimicrobial Prophylaxis
Indication for Prophylaxis: Healthy patients undergoing minor oral surgery (routine extractions, simple procedures) do not require systemic antibiotic prophylaxis; local antimicrobial measures (chlorhexidine rinse, gentamicin-soaked gauze) provide adequate infection prevention. Patients with significant medical comorbidities (diabetes, severe immunosuppression, history of rheumatic heart disease, orthopedic implants, cardiac prostheses) require consideration of antimicrobial prophylaxis. Prophylactic Antibiotic Selection: For patients requiring prophylaxis, amoxicillin (2 grams orally 1 hour before procedure) or clindamycin (600 mg orally 1 hour before procedure for penicillin-allergic patients) provide effective prophylaxis with excellent oral tissue penetration. Single preoperative dose provides adequate prophylaxis; post-operative antibiotics add minimal additional benefit for minor procedures and increase adverse effects risk. High-Risk Patients Requiring Specialized Prophylaxis: Patients with valvular heart disease, prosthetic joints, cardiac prostheses, or significant immunosuppression may require more extensive prophylaxis. Guidelines recommend consulting with patient's cardiologist or orthopedic surgeon regarding specific prophylaxis protocols for these patients.Hematologic Assessment
Bleeding Disorder Screening: Patients with personal or family history of excessive bleeding, easy bruising, or prolonged bleeding after dental treatment require hematologic assessment before surgery. Screening CBC (platelet count), PT/INR, and PTT help identify coagulopathies before surgery. Patients with platelet counts <50,000 are at increased operative bleeding risk; procedures should be deferred pending evaluation and possible platelet transfusion. Hemoglobin and Hematocrit: Patients with significant anemia (hemoglobin <10 g/dL) should be evaluated preoperatively and hemoglobin optimized if possible. Moderate anemia (hemoglobin 10-12 g/dL) is generally well-tolerated for routine oral procedures but warrants consideration and discussion.Fasting Guidelines
NPO (Nothing by Mouth) Requirements: Standard NPO guidelines recommend 6 hours minimum fasting from solid foods and 2-3 hours from clear liquids before general anesthesia or IV sedation. For local anesthesia procedures, eating and drinking can continue as normal; some clinicians recommend light snack 1-2 hours preoperatively to prevent hypoglycemia during extended procedures. Medication Timing with Fasting: Essential medications (antihypertensives, antiarrhythmics, seizure medications) should be taken with minimal water (sip only) morning of surgery despite NPO status. Medications that should be held morning of surgery: metformin (lactic acidosis risk with procedures), NSAIDs if possible (increased bleeding risk), and certain other agents as individualized.Smoking and Oral Health Optimization
Smoking Cessation: Smoking substantially impairs surgical healing, increasing infection risk 2-3 fold and delaying healing 20-30%. Patients should be strongly encouraged to abstain from smoking for minimum 2 weeks preoperatively; ideally 4 weeks or longer. Smoking cessation advice should be provided in writing with resources and encouragement. Nicotine replacement therapy may be considered, though nicotine gum/patches maintain some vasoconstriction effects. Oral Hygiene Enhancement: Patients should be instructed to perform enhanced oral hygiene (3-minute brushing twice daily, daily interdental cleaning, chlorhexidine rinses if available) for 1-2 weeks preoperatively. Superior preoperative oral hygiene reduces pathogenic bacteria and decreases infection risk 20-30%. Plaque and Calculus Removal: Professional scaling performed 2-7 days preoperatively (not immediately before surgery to allow gingival inflammation to resolve) reduces bacterial load and decreases infection risk. Scaling within 24 hours of surgery may increase operative bleeding from gingival inflammation.Psychological Preparation and Anxiety Management
Anxiety Assessment and Discussion: Dental anxiety is common, with 5-15% of patients experiencing severe anxiety affecting surgical outcomes. Anxious patients may have elevated stress hormones increasing bleeding risk and pain perception. Preoperative anxiolytic medications, reassurance, and discussion of operative procedures reduce anxiety and optimize outcomes. Preparation Discussion: Explaining expected sensations (pressure, vibration, sounds) during surgery without dwelling on potentially anxiety-provoking details helps patients develop realistic expectations. Emphasizing that local anesthesia will prevent pain (though patient may feel pressure or hear instruments) reassures patients. Discussing expected postoperative symptoms (swelling, bruising, discomfort) normalizes recovery and prevents post-operative distress. Anxiolytic Medication Options: For patients with significant anxiety, oral midazolam (0.25-0.5 mg/kg, maximum 20 mg) administered 30-45 minutes preoperatively provides excellent anxiolysis. Alternatively, nitrous oxide inhalation (50% NāO: 50% Oā mixture) combined with local anesthesia reduces anxiety and pain perception 30-40%. These sedation options are appropriate for outpatient procedures and do not require intubation.Physical Preparation Day Before Surgery
Surgical Site Preparation: Patients should bathe or shower the day before surgery using normal soap and water. Specialized antimicrobial scrubs (chlorhexidine or povidone-iodine) add minimal benefit for intraoral procedures. Hair clipping (not shaving, which creates microabrasions harboring bacteria) may be performed if extensive extraoral incisions are planned; shaving should be deferred to preoperative preparation. Clothing and Accessories: Patients should wear comfortable, loose-fitting clothing to surgical appointments. Jewelry (ear rings, necklaces, rings, body piercings) should be removed preoperatively; hospital policies typically require removal anyway. Metal items may interfere with monitoring equipment or cause burns during electrosurgery if left in place. Arrangements for Discharge: Patients undergoing conscious sedation or general anesthesia cannot drive postoperatively due to residual sedation effects. Discharge arrangements (friend, family member, taxi, rideshare) must be confirmed preoperatively. Patients should be instructed that they cannot legally or safely operate vehicles for remainder of day after sedation procedures.Pre-operative Arrival and Verification
Arrival Timing: Patients should arrive 15-30 minutes before scheduled procedure time to allow check-in and final preparations. Excessive early arrival creates unnecessary wait time; excessive late arrival risks procedure delay or cancellation. Consent Verification: Informed consent should be completed preoperatively, confirming patient understanding of procedure, expected outcomes, risks, benefits, and alternatives. Consent should verify that patient has fasted appropriately (if required), brought required documentation, and arranged transportation. Final Vital Signs: Blood pressure, heart rate, respiratory rate, and temperature should be assessed immediately preoperatively. Elevated BP warrants discussion with patient regarding anxiety level; persistent BP elevation >180/110 mmHg may warrant procedure deferral. Fever may indicate infection and warrant deferral of elective procedures pending medical evaluation.Special Situations and Considerations
Immunocompromised Patients: Patients with HIV, immunosuppressive therapy for transplant or rheumatologic conditions, or chemotherapy require extended antibiotic prophylaxis (typically 7-10 days postoperatively rather than single preoperative dose). Procedures should be scheduled when absolute neutrophil count is adequate if chemotherapy schedule permits. Severe Systemic Disease: Patients with American Society of Anesthesiologists (ASA) score of 4 or higher (severe systemic disease limiting activity) typically require hospital-based surgical procedures with appropriate monitoring capability rather than office-based oral surgery. Pregnancy Considerations: Elective procedures should be deferred until postpartum period. Emergent procedures (infection, trauma) can be performed during pregnancy but should be scheduled for second trimester when organogenesis is complete and patient is still relatively comfortable. Supine positioning should be avoided after first trimester due to aortocaval compression risk; left lateral tilt positioning is preferable.Conclusion
Comprehensive preoperative assessment and optimization 2-4 weeks before scheduled surgery substantially reduces perioperative complications and optimizes outcomes. Medical history assessment, medication management, antimicrobial prophylaxis when indicated, hematologic screening for high-risk patients, and psychological preparation facilitate successful surgical outcomes. Detailed patient instruction regarding fasting, smoking cessation, oral hygiene enhancement, and discharge arrangements ensure safe and efficient surgical delivery with minimal complications. Clinicians should recognize that preoperative preparation time invested yields substantial dividends in improved outcomes and patient satisfaction.