# Anesthesia for Patients with Ear Hematoma: Surgical Repair ## Key Takeaways - Anesthetic management for aural hematoma repair necessitates a multimodal approach, prioritizing patient-specific risk assessment for comorbidities like cardiac, renal, or endocrine disease, particularly in older animals. - Airway management is critical, requiring mandatory endotracheal intubation with securement and patency verification, especially given potential head rotation and elevation that can compromise the airway. - Effective pain management is paramount, utilizing a combination of systemic opioids, NSAIDs (where appropriate), and regional anesthetic techniques like a ring block at the ear base to address incisional and underlying ear disease discomfort. - Intraoperative monitoring must adhere to AAHA guidelines, with particular attention to perfusion and ventilation due to head-up positioning, utilizing pulse oximetry, capnography, and blood pressure monitoring to maintain physiological targets. - Recovery requires preventing self-trauma through Elizabethan collars and potential sedation, with careful consideration for brachycephalic breeds prone to airway obstruction, delaying extubation until adequate reflexes are present. - The surgical field is superficial (pinna), but the patient's underlying health and the potential for concurrent otitis media necessitate a thorough preanesthetic evaluation and individualized anesthetic plan. --- Aural hematoma repair is a common small animal procedure that presents specific anesthetic challenges distinct from other ear surgeries. The hematoma itself is rarely the primary threat to anesthetic safety. The signalment, the underlying otitis externa or otitis media, the head and ear positioning required for surgery, and the need for effective postoperative analgesia all shape the anesthetic plan. This article provides a decision framework for preanesthetic assessment, drug selection, airway management, positioning, monitoring, and recovery in dogs and cats undergoing aural hematoma repair. It is written for the practicing veterinarian who will administer or supervise anesthesia for these cases. The clinical question this article answers is direct: how should the anesthetic approach differ when the surgical field is the pinna instead of the middle ear or the external ear canal? The answer depends on recognizing that the procedure is superficial but the patient may not be. Many affected animals are older, have chronic ear disease, and may have comorbidities such as cardiac murmurs, renal insufficiency, or endocrinopathies. The anesthetic plan must therefore be individualized, with attention to the same monitoring standards applied to any anesthetized small animal patient, as outlined in the [AAHA anesthesia and monitoring guidelines for dogs and cats](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/). ## At a Glance | Parameter | Consideration | |---|---| | Patient profile | Often older dogs and cats with chronic ear disease, assess for cardiac, renal, endocrine comorbidities | | Surgical field | Pinna only, no middle ear stimulation, but head positioning and ear manipulation still require adequate depth | | Airway | Endotracheal intubation mandatory, head may be rotated or elevated, verify tube security and circuit patency | | Positioning | Lateral or sternal recumbency with affected ear uppermost, protect eyes, avoid excessive neck flexion | | Pain source | Primarily incisional and postoperative, ear canal disease may contribute preexisting discomfort | | Analgesia | Multimodal approach with opioids, NSAIDs where appropriate, and local anesthetic techniques | | Monitoring | Pulse oximetry, capnography, ECG, blood pressure, temperature, same standards as for any anesthetized patient | | Recovery | Prevent head shaking and self-trauma, plan for sedation or an Elizabethan collar as needed | ## Pathophysiology and Anesthetic Relevance An aural hematoma forms when shearing forces rupture vessels within the cartilage layers of the pinna, usually secondary to head shaking or ear scratching from otitis externa, parasites, or foreign bodies. The hematoma is a consequence of the underlying disease, not a primary disorder. This distinction matters for anesthesia because the inciting cause often remains active at the time of surgery. Otitis externa can be painful, and the associated inflammation may extend to the ear canal and tympanic membrane. Preanesthetic examination should therefore include otoscopic assessment when the patient's condition permits, and the anesthetic plan should account for the possibility of concurrent otitis media. The surgical repair itself is confined to the pinna. It does not involve the tympanic bulla, the vestibular apparatus, or the facial nerve in the same way that total ear canal ablation or bulla osteotomy does. The risk of vestibular signs or facial nerve trauma is low. However, the pinna is highly vascular and innervated by branches of the auriculopalpebral, great auricular, and cervical nerves. Surgical manipulation of the pinna produces a consistent nociceptive stimulus that requires adequate intraoperative analgesia, and the postoperative period carries a real risk of self-trauma if pain or the original pruritus is not controlled. ## Preanesthetic Assessment and Patient Optimization The preanesthetic evaluation should follow the same structured approach used for any small animal patient, with particular attention to age-related disease. A complete history, physical examination, and baseline laboratory testing are indicated. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) provides species-specific guidance on preanesthetic evaluation and risk assessment that is directly applicable here. Cardiac disease, particularly in older cats with murmurs or gallop rhythms, warrants echocardiography before anesthesia if not recently performed. Chronic kidney disease in older dogs and cats affects drug clearance and fluid management. Endocrine disease such as hypothyroidism or hyperadrenocorticism may be present and untreated, and this can influence hemodynamic stability and wound healing. The ear disease itself may influence the airway examination. Severe otitis externa with purulent discharge can extend to the periauricular tissues, and in rare cases regional lymphadenopathy or abscessation is present. This does not usually complicate intubation, but it should be documented. The patient's temperament matters as well. A painful, head-shaking dog or cat may require premedication before a thorough examination can be performed, and the premedication plan should be chosen with that in mind. ## Anesthetic Drug Selection There is no single drug protocol that is correct for every aural hematoma repair. The choice of premedication, induction agent, and maintenance technique should be based on the patient's cardiovascular and renal status, the anticipated duration of surgery, and the need for postoperative analgesia. Multimodal analgesia is the foundation of the approach, consistent with the [WSAVA Global Pain Council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/). An opioid is typically included for premedication, and a nonsteroidal anti-inflammatory drug may be added when no contraindication exists. The addition of a local anesthetic block at the base of the ear can provide intraoperative and early postoperative analgesia and reduce the requirement for systemic agents. The procedure is usually short, often under 45 minutes. This favors anesthetic techniques that allow rapid, smooth recovery. Propofol or alfaxalone are common induction choices, and maintenance can be achieved with inhalant anesthesia. Total intravenous anesthesia is an alternative but is rarely necessary for this procedure. The key is to avoid excessive depth. The pinna is not a highly stimulating surgical field once the skin incision is made, and the patient can easily be maintained at a lighter plane than would be required for middle ear surgery. Overdeep anesthesia in an older patient with reduced cardiac reserve is a more likely error than underdosing. ## Positioning and Airway Management The patient is typically placed in lateral recumbency with the affected ear uppermost, although sternal recumbency with the head rotated is an alternative. The head is often positioned with the nose slightly elevated to expose the ear canal and pinna. This positioning can kink the endotracheal tube if the tube is not properly secured and positioned. The anesthetist must verify that the tube remains patent after the head is placed in its final surgical position, and the circuit should be checked for leaks or obstruction. The eyes should be lubricated and protected, especially if the head is rotated, because the dependent eye may be compressed by the table or by surgical drapes. The head position also affects venous drainage from the head and neck. Excessive flexion or rotation can impair jugular venous return and increase bleeding in the surgical field. The surgeon and anesthetist should agree on the final head position before the procedure begins, and the anesthetist should recheck airway patency and monitoring connections after any repositioning. Capnography is particularly useful here, because a sudden change in the waveform or a rise in end-tidal carbon dioxide can indicate a kinked or displaced tube before oxygen saturation falls. ## Intraoperative Monitoring and Physiologic Targets Monitoring during aural hematoma repair follows the same core principles as any canine or feline anesthetic, with particular attention to perfusion and ventilation because of the head-up positioning and the variable duration of surgery. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) recommend continuous assessment of heart rate, respiratory rate, blood pressure, oxygenation, ventilation, and temperature in all anesthetized patients. Pulse oximetry, capnography, and oscillometric or Doppler blood pressure measurement should be considered minimum standards for this procedure. Heart rate and rhythm deserve specific interpretation in the context of ear disease. Otitis externa and aural hematoma are painful conditions, and the associated sympathetic tone may elevate baseline heart rate. After opioid premedication, heart rate often falls, and the anesthetist must distinguish an expected opioid effect from inadequate anesthetic depth or hypotension. Bradycardia that persists despite adequate blood pressure may be acceptable, but bradycardia accompanied by falling blood pressure warrants intervention. Capnography provides the earliest warning of hypoventilation, which is common in brachycephalic breeds and in patients positioned with the head elevated and the neck extended. Blood pressure targets follow standard small animal guidelines. Mean arterial pressure should be maintained above 60 mmHg in dogs and above 70 mmHg in cats, with systolic pressure above 90 mmHg in both species. The head-up position can create an artifactual gradient between the oscillometric cuff placed on a distal limb and the actual cerebral perfusion pressure. When the head is elevated more than 15 degrees, the brain sits above the heart, and cerebral perfusion pressure is reduced by the hydrostatic column. A cuff on the thoracic limb may read acceptable values while cerebral perfusion is marginal. This is rarely clinically significant for short procedures in healthy patients, but it becomes relevant in hypotensive, anemic, or geriatric animals. Doppler ultrasound with the cuff placed on the distal antebrachium or the tail is a practical alternative when oscillometric readings are inconsistent. Temperature monitoring is mandatory. The pinna is a highly vascular, poorly insulated structure, and surgical preparation with alcohol or chlorhexidine solution accelerates heat loss through evaporation. The head and ears are disproportionately exposed during this surgery, and the patient cannot be fully draped to conserve heat. Active warming with a forced-air blanket placed over the thorax and abdomen, a circulating water blanket beneath the patient, and warmed intravenous fluids all contribute to maintaining normothermia. Hypothermia prolongs recovery from inhalant anesthesia, impairs drug metabolism, and increases the risk of postoperative shivering, which raises oxygen consumption and can disrupt the surgical site. ## Positioning and Physiologic Consequences The patient is placed in lateral recumbency with the affected ear uppermost. The head is typically elevated and slightly rotated to present the concave surface of the pinna to the surgeon. This position has several physiologic consequences that the anesthetist must anticipate. Elevation of the head above the level of the heart reduces venous return and can lower cardiac output, particularly in hypovolemic patients. The effect is modest in healthy animals but can be significant in dehydrated, anorexic, or geriatric patients. Preoperative fluid therapy to correct deficits before induction is therefore important. During surgery, a balanced crystalloid solution at a maintenance rate, or a higher rate if the patient is hypotensive, supports venous return and compensates for the positional effects. The head-up position also increases the risk of regurgitation and aspiration in patients with gastroesophageal reflux. The pharynx sits below the larynx when the head is elevated, and passive reflux can pool in the pharynx and enter the airway. An endotracheal tube with a properly inflated cuff is essential. The tube should be secured carefully because the head will be manipulated during surgery, and accidental extubation or endobronchial migration is a real risk. The anesthetist should verify bilateral breath sounds after final positioning and again if the head is repositioned during the procedure. Brachycephalic breeds present additional challenges. Their elongated soft palates and narrowed nares make them prone to upper airway obstruction during recovery, and the head-up position can exacerbate this by altering the angle of the pharynx. Extubation should be delayed until the patient is swallowing and has regained a strong palpebral reflex. Some clinicians prefer to leave the endotracheal tube in place until the patient is sternal and nearly awake, accepting a slightly more agitated recovery in exchange for airway security. ## Analgesic Strategy and Regional Techniques Aural hematoma repair is a moderately painful procedure. The pinna itself has a rich sensory innervation from branches of the auriculopalpebral, great auricular, and auriculotemporal nerves. The surgical dissection, drainage, and placement of mattress sutures or a drain all generate nociceptive input that requires both intraoperative and postoperative analgesia. The [WSAVA Global Pain Council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/) emphasize multimodal analgesia as the standard of care for surgical pain in small animals. Systemic opioids form the foundation of the analgesic plan. A full mu agonist such as methadone, morphine, or hydromorphone provides reliable intraoperative and early postoperative analgesia. The choice of opioid is less important than the dose and timing. Premedication with an opioid ensures that analgesia is established before the surgical incision, which reduces central sensitization and improves postoperative pain control. A second dose may be administered during recovery if the procedure is prolonged or if the patient shows signs of pain. Nonsteroidal anti-inflammatory drugs (NSAIDs) are appropriate in patients without contraindications. Renal function, hepatic function, hydration status, and the presence of gastrointestinal disease must be assessed before administration. An NSAID given preoperatively or immediately postoperatively provides sustained analgesia and reduces the requirement for opioids. In cats, the licensed options vary by region, and the clinician must consult current formulary references for the appropriate product and dose. Local anesthesia is a valuable adjunct that is underused in aural hematoma surgery. A ring block around the base of the ear, infiltrating the subcutaneous tissues with a local anesthetic such as bupivacaine or lidocaine, desensitizes the surgical field and reduces the requirement for systemic anesthetics. The block is performed after induction and before surgical preparation. Bupivacaine provides several hours of postoperative analgesia, while lidocaine has a faster onset but shorter duration. The total dose must be calculated carefully to avoid systemic toxicity, particularly in small patients. The addition of epinephrine to the local anesthetic solution prolongs the block but is generally unnecessary for this procedure and carries a small risk of tissue ischemia in the pinna. The evidence for regional anesthesia in veterinary head surgery is limited, but the principles are well established. Complications of nerve blocks in the head, including hematoma formation and self-trauma, have been reported in equine dental patients and underscore the importance of precise needle placement and familiarity with regional anatomy. For the pinna, a simple subcutaneous ring block at the base of the ear is technically straightforward and carries minimal risk when performed correctly. ## Recovery and Immediate Postoperative Care Recovery from aural hematoma repair requires attention to the surgical site, the airway, and pain control. The head is often bandaged to protect the repair and to provide mild compression that reduces dead space and the risk of re-accumulation. The bandage must not be so tight that it restricts breathing, particularly in brachycephalic breeds. The anesthetist should confirm that the patient can breathe comfortably with the bandage in place before extubation. The patient should be positioned in sternal recumbency as soon as it is safe, with the head elevated to reduce swelling. An Elizabethan collar is essential to prevent the patient from scratching or shaking the head, which can disrupt the repair and cause the hematoma to recur. The collar should be fitted before the patient is fully awake, while it is still easy to apply. Pain assessment in the immediate postoperative period uses the same validated scoring systems used for other surgical procedures. The patient should be evaluated for vocalization, restlessness, guarding of the head, and changes in heart rate or blood pressure. Rescue analgesia with an opioid should be available and administered if the pain score indicates discomfort. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) provides practical guidance on pain assessment and analgesic selection in dogs and cats. The decision to discharge the patient on the same day or to hospitalize overnight depends on the patient's signalment, the extent of the surgery, and the availability of after-hours care. Same-day discharge is feasible for healthy patients with uncomplicated repairs, provided the owner can administer oral analgesics and monitor the surgical site. Hospitalization is advisable for patients with significant comorbidities, for those that required substantial intraoperative support, or for owners who cannot reliably provide postoperative care. ## Documentation and Communication The anesthetic record for aural hematoma repair should document the same parameters as any other anesthetic, with additional attention to positioning, the local anesthetic block, and the recovery period. The record should include the patient's weight, baseline vital signs, premedication drugs and doses, induction and maintenance agents, monitoring values at regular intervals, fluids administered, and any complications or interventions. The [AVMA practice resources](https://www.avma.org/resources-tools) emphasize the importance of complete and accurate medical records as a component of professional practice and patient safety. Specific documentation points for this procedure include the degree of head elevation, the cuff site and method for blood pressure measurement, the temperature trend, and the timing of the local anesthetic block. If the patient is discharged on the same day, the record should note the owner's instructions regarding analgesia, the Elizabethan collar, activity restriction, and signs that would warrant re-examination. Clear communication between the anesthetist, the surgeon, and the owner reduces the risk of complications and supports a smooth recovery. The anesthetic record also serves a quality improvement function. Reviewing the record after the procedure allows the team to identify patterns, such as hypothermia in small patients or hypotension in geriatric animals, and to adjust protocols accordingly. This iterative approach to anesthetic care is consistent with the guidance provided by the [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/), which recommend regular review of anesthetic practices and outcomes. ## Recognized Complications and Early Detection The principal anesthetic complications in aural hematoma repair relate to airway compromise, vestibular disturbance, and hemorrhage. Airway obstruction from pharyngeal swelling or laryngeal dysfunction can develop when the patient is positioned in lateral recumbency with the affected ear uppermost, particularly in brachycephalic breeds. Early detection relies on continuous capnography and pulse oximetry, with an abrupt fall in end-tidal carbon dioxide or oxygen saturation prompting immediate reassessment of airway patency instead of adjustment of anesthetic depth. Vestibular signs, including nystagmus, strabismus, and head tilt, may emerge or worsen during positioning and manipulation of the ear canal. These signs can be mistaken for inadequate anesthetic depth or hypotension. The discriminating observation is that vestibular nystagmus persists during stable anesthetic depth and does not respond to deepening. The AAHA anesthesia and monitoring guidelines emphasize continuous assessment of ventilation and oxygenation as core components of patient safety during all anesthetic procedures. Hemorrhage from the auricular vasculature is usually visible to the surgeon, but occult bleeding into the ear canal or pharynx may present as unexplained tachycardia, falling blood pressure, or a rising end-tidal carbon dioxide trend from reduced ventilation. Early detection requires integration of surgical field observation with hemodynamic monitoring instead of reliance on any single parameter. ## Common Errors and Corrective Actions A frequent error is failing to secure the endotracheal tube adequately before positioning. Lateral recumbency with ear manipulation can displace the tube into a bronchus or cause it to kink. The corrective action is to confirm bilateral breath sounds and capnographic waveform after final positioning and to recheck after any repositioning of the head. Students and less experienced clinicians often underestimate the depth of anesthesia required for ear canal manipulation. The auricular branches of the vagus and facial nerves transmit intense nociceptive input, and a patient that appears stable during skin incision may respond dramatically when the ear canal is curetted or drained. The corrective action is to anticipate the most stimulating phase of the procedure and to deepen anesthesia or administer additional analgesia before that phase begins. Another common error is over-interpretation of bradycardia as a sign of adequate depth. In ear surgery, bradycardia may reflect a vagal reflex from manipulation of the ear canal instead of appropriate anesthetic depth. The discriminating check is to observe whether the bradycardia coincides with surgical stimulation and whether it resolves when stimulation ceases. A third error is neglecting to protect the dependent eye and ear. The dependent ear, if affected, may be compressed and cause additional pain or swelling. The corrective action is to use a padded ring or positioning device and to document the position of all limbs and pressure points in the anesthetic record. | Observation | Likely Cause | Discriminating Check | |---|---|---| | Sudden fall in ETCO2 with stable SpO2 | Endotracheal tube displacement or kink | Auscultate chest, inspect tube position, pass a stylet | | Bradycardia during ear manipulation | Vagal reflex from auricular nerve stimulation | Observe timing relative to surgical stimulus, pause surgery | | Persistent nystagmus at stable depth | Vestibular disturbance, not light anesthesia | Assess response to deepening, check for head tilt | | Tachycardia with falling blood pressure | Occult hemorrhage or inadequate analgesia | Inspect surgical field, check blood pressure trend, assess pain score | | Rising ETCO2 with stable respiratory rate | Hypoventilation from positioning or opioid effect | Measure arterial blood gas if available, adjust ventilation | ## Limitations of the Evidence and Areas of Expert Disagreement The evidence base for anesthetic management of aural hematoma repair is largely extrapolated from general small animal anesthesia and from human or equine regional anesthesia literature. No prospective trials specifically compare anesthetic protocols for aural hematoma surgery in dogs and cats. The WSAVA Global Pain Council guidelines provide a framework for multimodal analgesia but do not address ear surgery specifically. Expert opinion differs on the value of regional nerve blocks for the ear. Some clinicians advocate blocking the auriculotemporal and great auricular nerves to reduce intraoperative nociception and postoperative pain. Others argue that the rich collateral innervation of the pinna makes complete regional blockade unreliable and that systemic analgesia is sufficient. The limited evidence from equine dental regional anesthesia, where complications occurred in approximately 3% of blocks, suggests that regional techniques carry small but real risks of hematoma and nerve injury, and these risks must be weighed against the expected benefit. There is also disagreement about the optimal position for surgery. Lateral recumbency with the affected ear uppermost provides the best surgical access but may worsen vestibular signs and complicate airway management. Dorsal recumbency with the head turned may improve airway access but makes surgical manipulation more difficult. The choice should be made jointly by the anesthetist and surgeon based on the individual patient's conformation, vestibular status, and airway risk. ## Referral, Consultation, and Reporting Referral to a specialist anesthetist or a veterinary teaching hospital is warranted when the patient has concurrent cardiac disease, severe brachycephalic airway syndrome, or a coagulopathy that cannot be corrected preoperatively. Patients with marked vestibular signs that interfere with ambulation or eating may benefit from consultation with a neurologist before anesthesia. Laboratory involvement is indicated when the preanesthetic assessment identifies abnormalities in coagulation, hepatic function, or electrolyte balance. A patient with suspected coagulopathy should have platelet count, prothrombin time, and activated partial thromboplastin time evaluated before surgery, and surgery should be deferred until abnormalities are characterized. Regulatory reporting obligations vary by jurisdiction. The AVMA practice resources provide guidance on professional standards and client communication, while the WOAH terrestrial animal health standards address disease reporting obligations that may apply if the ear disease is associated with a notifiable condition. Clinicians should be familiar with the reporting requirements in their own region and should document any adverse anesthetic events in the medical record according to local standards of practice. ## Frequently Asked Questions ### How Should I Modify the Anesthetic Plan for a Brachycephalic Dog Undergoing Aural Hematoma Repair? Brachycephalic dogs require additional airway scrutiny before surgery. Assess the upper airway for stenotic nares, elongated soft palate, or everted laryngeal saccules during the preanesthetic examination. Preoxygenate for three to five minutes before induction. Have two endotracheal tube sizes available, one smaller than predicted, because laryngeal collapse can make intubation difficult. Maintain a slightly deeper plane than in non-brachycephalic dogs until the airway is secured. During recovery, extubate only when the dog is swallowing and nearly awake. Position the head elevated to reduce pharyngeal edema. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) recommend continuous pulse oximetry and capnography for all anesthetized patients, which is especially relevant in these breeds. ### What Can I Do When Multimodal Analgesia Is Limited by Cost or Drug Availability? Prioritize the interventions with the highest analgesic yield per unit cost. A single injection of a long-acting local anesthetic, such as bupivacaine, placed as a ring block around the ear base provides several hours of postoperative comfort at minimal expense. Combine this with a nonsteroidal anti-inflammatory drug if the patient has no contraindications. Opioids remain the most reliable systemic analgesics, but if supply is constrained, reserve them for the intraoperative and immediate recovery periods. The [WSAVA Global Pain Council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/) emphasize that multimodal therapy does not require every drug class, only that pain is assessed systematically and treated through more than one mechanism. Document the analgesic plan and the reasons for any omissions. ### How Does Anesthetic Management Differ in a Cat Compared with a Dog? Cats metabolize many drugs more slowly than dogs and are more sensitive to the sedative effects of alpha-2 agonists. Avoid routine premedication with acepromazine in cats with underlying cardiac disease. Ketamine-based protocols are common in cats, but the dissociative effects can complicate recovery if the ear bandage restricts head movement. Place a peripheral intravenous catheter before induction to allow rapid vascular access. Monitor body temperature closely because cats lose heat faster than dogs due to their smaller body mass. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) notes that cats require careful dose calculation for all anesthetic drugs because their hepatic glucuronidation pathways are less efficient. Recovery should occur in a quiet, warm, dimly lit space to reduce emergence delirium. ### What Monitoring Equipment Is Essential If I Only Have Basic Tools? Capnography and pulse oximetry are the minimum standard for any anesthetized patient, per the [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/). If a multiparameter monitor is unavailable, use a Doppler flow detector over the dorsal pedal or palmar digital artery to confirm perfusion. Count heart rate and respiratory rate manually every five minutes. Assess mucous membrane color and capillary refill time. Measure blood pressure with a Doppler and appropriately sized cuff, ideally every five minutes. Monitor temperature with an esophageal or rectal probe. The ear bandage can obscure the auricular artery, so place the Doppler probe on a distal limb. Document all readings on an anesthetic record. If the patient is unstable and monitoring is inadequate, pause the procedure and stabilize before continuing. ### How Should I Document the Anesthetic Event for This Procedure? Record the preanesthetic assessment, including body weight, American Society of Anesthesiologists status, and any comorbidities. Document all drugs with dose, route, and time of administration. Chart vital parameters every five minutes during the procedure and every 15 minutes in recovery until the patient is sternal. Note the positioning method, the type of ear bandage applied, and any complications such as hypotension or hypothermia. Record the pain score used and the response to analgesic interventions. The [AVMA practice resources](https://www.avma.org/resources-tools) advise that the medical record must support every clinical decision, including the choice of anesthetic protocol and the rationale for any deviations from standard practice. Include a discharge note that describes the analgesic plan and the date for bandage removal. ### How Do I Explain the Anesthetic Risks and Aftercare to the Owner? Use plain language and focus on the three most common concerns: the risk of anesthesia, the need for the bandage, and the possibility of recurrence. Explain that the patient will receive pain medication before, during, and after surgery. Describe the bandage as a protective dressing that prevents the ear from refilling with blood and that it will be changed in the clinic. State that the ear may need to be cleaned and that the head should be kept dry. Advise the owner to return immediately if the bandage becomes wet, bloody, or displaced. The [WSAVA Global Pain Council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/) recommend that owners receive written instructions for analgesic administration at home. Confirm that the owner understands the signs of pain to watch for, including head shaking, vocalization, and reduced appetite. ## Related Clinical & Scientific Guides * [Anesthetic Machine Leak Testing and Pressure Checks: A Step-by-Step Protocol](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthetic-machine-leak-testing-pressure-checks) * [Anesthetic Depth Assessment: Reflexes, Eye Position, and Ventilation](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthetic-depth-assessment-reflexes-eye-position) * [Anesthesia for Patients with Obesity: Challenges and Solutions](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-obesity-challenges-solutions) ## References and Further Reading - [A Simplified Approach to Breast Reduction Using the Medial Pedicle.](https://pubmed.ncbi.nlm.nih.gov/35662909/). 2022. - [Laser-assisted breast reduction: a safe and effective alternative. A study of 367 patients.](https://pubmed.ncbi.nlm.nih.gov/19338925/). 2006. - [A Retrospective Study of the Incidence and Management of Complications Associated With Regional Nerve Blocks in Equine Dental Patients.](https://pubmed.ncbi.nlm.nih.gov/31138048/). 2019. - [Treatment of chronic subdural hematoma through a burr hole.](https://pubmed.ncbi.nlm.nih.gov/20642902/). 2010. - [Effect of unfocused extracorporeal shockwave therapy on bone mineral content of twelve distal forearms of postmenopausal women: a clinical pilot study.](https://pubmed.ncbi.nlm.nih.gov/31768768/). 2019. - [The uncertainty of radio frequency treatment of renal cell carcinoma: findings at immediate and delayed nephrectomy.](https://pubmed.ncbi.nlm.nih.gov/11912369/). 2002. - [AAHA Anesthesia and Monitoring Guidelines for Dogs and Cats](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/). AAHA. - [WSAVA Global Pain Council Guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/). WSAVA. - [MSD Veterinary Manual, Professional Edition](https://www.msdvetmanual.com/). MSD Veterinary Manual. ## Related Articles - [Anesthesia for Patients with Ear Disease: Vestibular Syndrome](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-ear-disease-vestibular-syndrome) - [Anesthesia for Patients with Cancer: Paraneoplastic Syndromes](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-cancer-paraneoplastic-syndromes) - [Anesthesia for Patients with Sepsis: Hemodynamic Support](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-sepsis-hemodynamic-support) - [Anesthesia for Patients with Trauma: Emergency Considerations](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-trauma-emergency-considerations) - [Anesthesia for Patients with Dental Disease: Extractions and Cleaning](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-dental-disease-extractions-cleaning) > This article is educational professional reference material for veterinary audiences. It is not a substitute for veterinary diagnosis, individual clinical judgment, current product labeling, or applicable regulatory requirements.