Anesthesia for Patients with Respiratory Disease: Asthma and COPD

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-11

Key Takeaways

• Preanesthetic optimization for feline asthma and canine chronic bronchitis necessitates thorough assessment including thoracic radiographs, arterial blood gas analysis or pulse oximetry, and evaluation of cough frequency and character to stratify risk and guide anesthetic planning.
• Avoidance of histamine-releasing drugs (e.g., barbiturates, certain opioids) and anticholinesterases is critical due to their potential to exacerbate bronchoconstriction and airway secretions in these patients.
• Induction agents with bronchodilatory or airway-neutral profiles, such as ketamine (due to sympathomimetic effects) or propofol, are preferred over agents like barbiturates which can induce histamine release.
• Intraoperative ventilation strategies should prioritize low tidal volumes and higher respiratory rates to minimize barotrauma and dynamic hyperinflation, with permissive hypercapnia considered if pH remains above 7.2 and oxygenation is adequate.
• Continuous monitoring with capnography is paramount for detecting airway obstruction and ventilation adequacy, while pulse oximetry and blood pressure monitoring are essential for assessing oxygenation and cardiovascular stability, respectively.
• Recovery requires supplemental oxygen, minimal patient handling, and readily available bronchodilator therapy to manage potential post-extubation bronchospasm or respiratory distress.

This article addresses anesthetic management for small animal patients with feline asthma and canine chronic bronchitis, the two most common lower airway diseases encountered in companion animal practice. It is written for practicing veterinarians who need a structured approach to preanesthetic optimization, drug selection, intraoperative ventilation, and recovery in patients with increased airway resistance and bronchial hyperresponsiveness. Upper airway obstruction is excluded from this discussion.

The central clinical question is how to provide safe, effective anesthesia when the patient's primary pathology involves dynamic airway narrowing, mucus accumulation, and heightened reflex bronchoconstriction. These conditions alter the pharmacokinetics and pharmacodynamics of anesthetic drugs, change the mechanics of spontaneous and controlled ventilation, and increase the risk of perioperative complications such as hypoxemia, hypercapnia, and pneumothorax. The article emphasizes decision criteria that can be applied at each phase of the anesthetic episode, from patient assessment through recovery.

Feline asthma is characterized by eosinophilic airway inflammation, bronchial smooth muscle hypertrophy, and reversible bronchoconstriction. Canine chronic bronchitis is a neutrophilic, nonreversible disease of the larger airways with goblet cell hyperplasia and mucus hypersecretion. Despite these differences, both conditions share the functional consequence of increased airway resistance and expiratory flow limitation. The anesthetic plan must therefore prioritize bronchodilation, avoidance of airway irritants, and preservation of functional residual capacity.

At a Glance

Pathophysiology of Lower Airway Disease and Anesthetic Implications

The functional unit affected in asthma and chronic bronchitis is the conducting airway, from the trachea to the terminal bronchioles. In feline asthma, allergen exposure triggers a Th2-mediated inflammatory cascade with mast cell degranulation, eosinophil recruitment, and release of leukotrienes and histamine. The result is bronchial smooth muscle contraction, mucosal edema, and luminal plugging with eosinophilic exudate. In canine chronic bronchitis, chronic irritant exposure produces neutrophilic inflammation, fibrosis, and irreversible airway remodeling. Airway narrowing in both diseases increases resistance, which is inversely proportional to the fourth power of the radius. Small reductions in airway caliber therefore produce large increases in work of breathing.

Anesthesia interacts with this pathophysiology at several points. Inhaled anesthetic agents can cause dose-dependent respiratory depression and blunting of hypoxic pulmonary vasoconstriction. Endotracheal intubation stimulates airway reflexes that can trigger bronchospasm in susceptible patients. Mechanical ventilation with high tidal volumes can cause barotrauma in lungs with heterogeneous compliance. Positioning and abdominal pressure can reduce functional residual capacity and promote airway closure. Each of these effects must be anticipated and managed.

Bronchodilator Therapy and Premedication

Preanesthetic optimization begins with confirmation that the patient's airway disease is as well controlled as possible. For asthmatic cats, this means current use of inhaled or systemic glucocorticoids and bronchodilators as prescribed. For dogs with chronic bronchitis, similar principles apply. A patient with active wheezing, frequent coughing, or increased respiratory effort at rest should not proceed to elective anesthesia without discussion of the risk-benefit balance.

Bronchodilators are the central element of intraoperative airway management. Beta-2 adrenergic agonists such as albuterol and terbutaline relax bronchial smooth muscle and can be administered before induction or during the procedure if bronchospasm develops. Anticholinergic bronchodilators such as ipratropium reduce vagally mediated bronchoconstriction and are useful adjuncts. The choice of premedication should avoid drugs with histamine-releasing properties, as histamine is a potent bronchoconstrictor in cats and dogs with reactive airways.

Induction and Maintenance Drug Selection

Ketamine has a pharmacologic profile that is favorable for patients with reactive airway disease. It is a phencyclidine derivative that functions primarily as an N-methyl-D-aspartate receptor antagonist and produces hemodynamically stable anesthesia via central sympathetic stimulation without affecting respiratory function, as described in a review of ketamine clinical pharmacokinetics and pharmacodynamics. The sympathomimetic effect supports bronchodilation through endogenous catecholamine release. Ketamine also preserves respiratory drive better than many other induction agents, which is advantageous when spontaneous ventilation is desired.

Propofol is generally well tolerated in patients with lower airway disease and has minimal effect on bronchomotor tone. Barbiturates are less desirable because they can cause histamine release. The choice between ketamine and propofol should be guided by the patient's cardiovascular status, the procedure type, and the clinician's familiarity with each agent. Current formulary references should be consulted for dosing and species-specific considerations.

Inhaled anesthetics are acceptable for maintenance but require attention to depth and ventilation. Sevoflurane and isoflurane are both airway-neutral at clinical concentrations. Nitrous oxide should be avoided because it can expand trapped gas in regions of the lung with air trapping.

Ventilation Strategy and Monitoring

The goals of intraoperative ventilation are to maintain oxygenation, avoid excessive airway pressures, and prevent dynamic hyperinflation. Spontaneous ventilation is preferred when the procedure allows, because it preserves the patient's own respiratory drive and airway defense mechanisms. When controlled ventilation is required, a low tidal volume strategy with a higher respiratory rate is appropriate. This approach limits peak airway pressure and reduces the risk of volutrauma in lungs with heterogeneous compliance.

Capnography is essential for monitoring ventilation adequacy. End-tidal carbon dioxide should be interpreted in the context of the patient's baseline status. Permissive hypercapnia may be acceptable in patients with chronic carbon dioxide retention, but acute elevations should be avoided. Pulse oximetry provides continuous assessment of oxygenation, and arterial blood gas analysis should be performed when available for patients with moderate to severe disease.

Airway pressure monitoring is critical when mechanical ventilation is used. Peak inspiratory pressure should be kept below thresholds that risk barotrauma, and any sudden increase in airway pressure during the procedure should prompt immediate evaluation for bronchospasm, endotracheal tube obstruction, or pneumothorax. The American Animal Hospital Association anesthesia and monitoring guidelines provide consensus recommendations on monitoring parameters for dogs and cats that should be followed in all cases.

Preanesthetic Assessment and Risk Stratification

The preanesthetic evaluation of a cat with suspected asthma or a dog with chronic bronchitis begins with a directed history. Cough frequency, exercise tolerance, presence of wheezing, and current medications all inform the anesthetic plan. A patient that coughs daily or requires bronchodilators more than twice weekly has poorly controlled disease and carries higher anesthetic risk. The physical examination should focus on respiratory rate and effort, auscultation for wheezes or prolonged expiratory phase, and assessment of mucous membrane color. Thoracic radiographs help confirm lower airway disease and exclude concurrent pathology such as neoplasia or pneumonia, but they do not quantify functional impairment.

Arterial blood gas analysis, when available, provides the most objective measure of gas exchange. A resting PaO2 below 80 mmHg or PaCO2 above 45 mmHg indicates significant disease and predicts intraoperative difficulty. Pulse oximetry and capnography are useful screening tools but cannot replace blood gas measurement in severely affected patients. The American Animal Hospital Association anesthesia guidelines emphasize that monitoring should begin before drug administration and continue through recovery, with the specific parameters chosen based on patient status and procedure AAHA anesthesia and monitoring guidelines for dogs and cats.

Risk stratification follows a simple framework. Mild disease, defined as occasional cough with normal resting respiratory effort, allows a standard protocol with bronchodilator premedication. Moderate disease, with daily cough or wheeze on exertion, warrants preoxygenation, bronchodilator therapy before induction, and capnography throughout. Severe disease, with increased resting respiratory effort or abnormal blood gases, requires stabilization before anesthesia whenever the procedure can be delayed. Corticosteroid therapy should continue through the perioperative period, as abrupt withdrawal can precipitate bronchospasm.

Preoxygenation Technique

Preoxygenation replaces alveolar nitrogen with oxygen and creates a reservoir that delays hypoxemia during apnea. The technique matters more than the duration. In cats, a tight-fitting mask with a fresh gas flow of 3 to 5 L/min for 3 to 5 minutes achieves meaningful denitrogenation. Dogs tolerate higher flows, and the same time frame applies. Flow-by oxygen alone is inadequate for preoxygenation because it does not reliably increase the oxygen fraction in the alveoli.

The mask must fit without leaking excessively, but it must not cause the patient to struggle. A struggling patient with lower airway disease may bronchoconstrict and consume the oxygen reserve faster than it is built. If the patient resists the mask, sedation with a low-dose opioid or dexmedetomidine may be needed before preoxygenation. Dexmedetomidine produces sedation and analgesia with minimal respiratory depression, although bradycardia and changes in cardiac output can occur dexmedetomidine applications in pediatric critical care and pediatric anesthesiology. The drug should be used cautiously in patients with preexisting bradycardia or hypotension.

Preoxygenation is most valuable when the airway will be instrumented. Endotracheal intubation in a patient with reactive airways can trigger laryngospasm or bronchospasm, and the oxygen reserve buys time to manage these complications. The same principle applies to extubation, when the endotracheal tube is removed and the airway is briefly unprotected.

Intraoperative Ventilation Strategy

Spontaneous ventilation preserves the patient's own respiratory drive and avoids the cardiovascular effects of positive pressure ventilation. In mild disease, spontaneous ventilation with close monitoring is acceptable. The anesthetist must watch the capnograph and the reservoir bag continuously. A rising end-tidal carbon dioxide concentration, a declining tidal volume, or an increasing respiratory rate all signal impending decompensation.

In moderate to severe disease, controlled ventilation is preferred. The diseased lung has increased airway resistance and heterogeneous compliance, so a single pressure or volume setting will not suit all lung units. The goal is to maintain oxygenation and carbon dioxide clearance while avoiding barotrauma and dynamic hyperinflation. A pressure-controlled mode with a peak inspiratory pressure of 10 to 15 cm H2O and a respiratory rate of 10 to 14 breaths per minute is a reasonable starting point for most dogs and cats. The inspiratory to expiratory ratio should favor expiration, typically 1:2 or 1:3, to allow complete exhalation through narrowed airways.

Dynamic hyperinflation, also called breath stacking, occurs when the expiratory time is too short for the patient to exhale fully. The end-expiratory pressure in the alveoli rises, venous return falls, and cardiac output drops. The capnograph shows an incomplete return to baseline, and the blood pressure declines despite stable anesthetic depth. Treatment is to disconnect the breathing circuit for 30 to 60 seconds, allow full exhalation, and resume ventilation with a lower respiratory rate or a longer expiratory time.

Positive end-expiratory pressure (PEEP) of 3 to 5 cm H2O can recruit collapsed alveoli and improve oxygenation in patients with atelectasis. It should be used cautiously in asthma and chronic bronchitis, because increased airway resistance can worsen dynamic hyperinflation. If PEEP is used, the anesthetist must monitor blood pressure closely and be prepared to reduce or remove it if hypotension develops.

Monitoring Parameters and Interpretation

Capnography is the single most useful monitor in the patient with lower airway disease. The waveform shape provides information that the numeric value alone cannot. A prolonged expiratory plateau with a slow rise to the peak suggests airway obstruction. An incomplete return to baseline indicates rebreathing or dynamic hyperinflation. A sudden loss of waveform suggests disconnection, esophageal intubation, or cardiac arrest.

Pulse oximetry measures hemoglobin saturation but lags behind blood gas changes. A saturation above 95 percent is reassuring, but a saturation of 90 percent may correspond to a PaO2 anywhere from 60 to 80 mmHg, depending on the position of the oxyhemoglobin dissociation curve. The probe site matters. The tongue is the most reliable site in dogs and cats, but it can become compressed by the endotracheal tube or the patient's own weight. The pinna, lip, or prepuce are alternatives, though they are more prone to motion artifact.

Blood pressure monitoring detects the cardiovascular consequences of ventilation. Positive pressure ventilation reduces venous return, and the effect is magnified in hypovolemic patients or those with dynamic hyperinflation. A falling blood pressure in a patient with stable anesthetic depth should prompt evaluation of ventilation settings before adding vasopressors.

The following table summarizes the monitoring parameters, what each detects, and the action threshold.

Recovery and Extubation Timing

Extubation is a high-risk moment for the patient with reactive airways. The endotracheal tube stimulates cough and bronchospasm, but removing it too early leaves the patient without a secure airway if respiratory failure develops. The decision depends on the patient's respiratory drive and the depth of anesthesia.

For patients with mild disease, extubation when the swallowing reflex returns is appropriate. For patients with moderate or severe disease, a deeper extubation is often safer. The patient is maintained on oxygen until spontaneous ventilation is regular and the capnograph shows a normal waveform, then the tube is removed in one smooth motion during expiration. The patient is placed in sternal recumbency with the head elevated, and oxygen is administered by mask or flow-by for at least 10 minutes.

Bronchodilator therapy should be available in the recovery area. A patient that develops wheezing or increased respiratory effort after extubation may benefit from an inhaled bronchodilator, though the stress of mask administration can worsen the problem. The anesthetist must weigh the benefit of the drug against the cost of patient agitation. Injectable bronchodilators such as terbutaline are an alternative when the patient will not tolerate a mask.

Recovery monitoring continues until the patient is sternal, responsive, and maintaining oxygen saturation above 95 percent on room air or low-flow oxygen. The American Animal Hospital Association guidelines recommend that monitoring continue through recovery, as complications are as likely in this period as during the procedure itself AAHA anesthesia and monitoring guidelines for dogs and cats. The patient should not be discharged from the recovery area until these criteria are met.

Recognized Complications and Early Detection

The principal failure modes in anesthetizing patients with asthma or chronic bronchitis cluster around three mechanisms: dynamic hyperinflation, progressive atelectasis, and bronchodilator-related cardiovascular instability. Each has a recognizable early signature.

Dynamic hyperinflation, or breath stacking, occurs when expiratory time is insufficient to empty the lungs before the next breath is delivered. The earliest detectable sign is a progressive rise in peak inspiratory pressure with an unchanged or falling tidal volume. Capnography shows an increasing end-tidal carbon dioxide with a widening alveolar to arterial gradient. The discriminating maneuver is to disconnect the breathing circuit and observe the chest for passive recoil. If the chest does not visibly deflate within three to five seconds, hyperinflation is present and ventilation must be paused.

Atelectasis develops silently in the dependent lung fields of patients with preexisting airway closure. Early detection depends on pulse oximetry trending downward despite an unchanged fraction of inspired oxygen, or on a rising alveolar to arterial oxygen gradient calculated from an arterial blood gas sample. The discriminating check is a recruitment maneuver with a sustained inflation, followed by reassessment of oxygenation. If the gradient narrows, atelectasis was the cause.

Bronchodilator-related arrhythmias and hypotension are most often seen when beta-2 agonists have been administered at high cumulative doses or when the patient has unrecognized cardiac disease. The early signature is sinus tachycardia that does not track with anesthetic depth, followed by ventricular premature complexes. Hypotension in this setting is distinguished from hypovolemia by the presence of a tachyarrhythmia and by the absence of response to a fluid bolus. The discriminating check is a brief trial of reduced bronchodilator dosing combined with electrocardiographic observation.

Common Errors and Corrective Actions

The most frequent error is induction before bronchodilation is established. A patient with audible wheeze under light sedation will only worsen once airway instrumentation begins. The corrective action is to delay induction until auscultation is clear or markedly improved, and to document the response to bronchodilator therapy in the record.

A second error is overreliance on pulse oximetry as the sole oxygenation monitor. SpO2 can remain near normal while carbon dioxide rises steeply in a patient breathing a high inspired oxygen fraction. The corrective action is to place a capnograph early and to interpret the waveform shape, also the numeric value. A prolonged expiratory plateau on the capnogram suggests lower airway obstruction and warrants longer expiratory time.

A third error is aggressive manual ventilation in an attempt to correct hypercapnia. This worsens hyperinflation and can precipitate cardiovascular collapse. The corrective action is to accept permissive hypercapnia when the end-tidal carbon dioxide is below 60 mm Hg and pH remains above 7.2, provided oxygenation is adequate. Ventilator settings should prioritize expiratory time over tidal volume.

A fourth error is premature extubation in a patient who is still bronchospastic. The corrective action is to auscultate before extubation, to extubate at a surgical plane of anesthesia instead of during emergence, and to have bronchodilator therapy immediately available in the recovery area. The AAHA anesthesia and monitoring guidelines for dogs and cats emphasize that recovery is a high-risk period and that monitoring should continue until the patient is sternal and stable AAHA Anesthesia and Monitoring Guidelines for Dogs and Cats.

Evidence Limitations and Divergent Expert Opinion

The evidence base for anesthetic management of feline asthma and canine chronic bronchitis is largely extrapolated from human anesthesia and from experimental pharmacology. Direct comparative trials in companion animals are scarce. Expert opinion diverges on several points.

The role of ketamine as a bronchodilator is one such point. Ketamine produces hemodynamically stable anesthesia without affecting respiratory function, and it has been used empirically in feline asthma because of its sympathomimetic effects Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy. Some clinicians advocate its routine use as an induction agent in asthmatic cats, while others reserve it for patients who fail to respond to conventional bronchodilators. The evidence does not settle this question.

The ventilatory effects of dexmedetomidine are similarly contested. Some studies report mild respiratory depression and a blunted response to carbon dioxide challenge, while others demonstrate no effect on ventilation Dexmedetomidine: applications in pediatric critical care and pediatric anesthesiology. In small animal practice, the drug is often avoided in lower airway disease because of its potential to reduce minute ventilation, but the evidence base for this avoidance is thin.

The use of alpha-2 agonists by neuraxial routes, which can produce hypotension and sedation in humans, has no established role in small animal lower airway disease and should not be extrapolated from human data Hemodynamic and analgesic profile after intrathecal clonidine in humans.

Referral and Escalation Criteria

Referral to a specialist anesthesiologist or criticalist is warranted when a patient requires mechanical ventilation for more than 12 hours, when permissive hypercapnia cannot maintain pH above 7.2, or when repeated recruitment maneuvers fail to improve oxygenation. Patients with suspected pneumothorax, which can complicate severe bronchospasm and positive pressure ventilation, require immediate thoracic imaging and likely chest drain placement before further anesthetic management.

Laboratory involvement is indicated when serial arterial blood gases are needed to guide ventilator adjustments, or when electrolyte abnormalities such as hypokalemia or hypomagnesemia are suspected as contributors to bronchodilator-induced arrhythmias. Point-of-care lactate measurement can help distinguish hypoperfusion from primary respiratory failure.

Regulatory reporting obligations are uncommon in this context. They arise when a drug reaction or anesthetic death occurs in a jurisdiction with mandatory adverse event reporting, or when a product defect is suspected. The American Veterinary Medical Association practice resources provide guidance on adverse event reporting pathways American Veterinary Medical Association Practice Resources. Clinicians should know the reporting requirements in their own jurisdiction and should document suspected adverse drug reactions in the medical record regardless of whether reporting is mandatory.

Frequently Asked Questions

How Do I Manage an Asthmatic Cat When No Inhalant Anesthetic Machine Is Available?

Total intravenous anesthesia is a practical alternative when an anesthetic machine is unavailable. Ketamine-based protocols are often selected because ketamine produces hemodynamically stable anesthesia without depressing respiratory function, and its bronchodilatory properties may benefit cats with reactive airways. A benzodiazepine or dexmedetomidine can be combined with ketamine to improve muscle relaxation and sedation. Dexmedetomidine may cause bradycardia and variable effects on ventilation, so monitor heart rate and respiratory rate closely. Premedicate with a bronchodilator such as terbutaline before induction. Have manual ventilation equipment and an oxygen source available. If the patient deteriorates, stop the procedure and provide oxygen support. Consult current formulary references for doses and drug compatibility before administration.

What Should I Do When Capnography Is Not Available During Mechanical Ventilation?

Without capnography, rely on a combination of clinical assessment and spirometry. Observe thoracic wall excursion and reservoir bag compliance during each breath. Auscultate lung fields bilaterally to confirm air movement. Pulse oximetry provides a delayed indicator of hypoventilation, so trend SpO2 values over time instead of interpreting single readings. Set initial tidal volume at 10 to 15 mL/kg and ventilatory rate at 10 to 14 breaths per minute for dogs, adjusting based on thoracic movement. Intermittently disconnect the patient from the circuit to allow spontaneous breathing trials. If the patient becomes hypercapnic, clinical signs include progressive tachycardia, hypertension, and eventually arrhythmias. When any doubt exists about ventilation adequacy, revert to manual ventilation with a trained observer dedicated to the airway.

How Does Anesthetic Management Differ for a Dog with Chronic Bronchitis Compared with an Asthmatic Cat?

Dogs with chronic bronchitis typically have less severe bronchospasm than cats with asthma, but they often have concurrent obesity, cardiac disease, or tracheal collapse. Premedication should avoid drugs with significant histamine release, such as morphine or acepromazine in susceptible individuals. Propofol induction is generally well tolerated, whereas ketamine may be less ideal in dogs with cardiac compromise because of its sympathomimetic effects. Maintenance with isoflurane or sevoflurane allows rapid adjustment of anesthetic depth. Dogs with chronic bronchitis benefit from lower tidal volumes and higher respiratory rates to limit dynamic hyperinflation. Cats with asthma require more aggressive bronchodilator therapy and are more prone to laryngospasm during intubation. Recovery considerations differ as well: dogs may need prolonged oxygen support if underlying cardiac disease limits cardiac output.

What Are the Minimum Monitoring Standards for a Bronchoscopy Procedure in an Asthmatic Patient?

Bronchoscopy imposes additional demands because the airway is partially occupied by the scope and lavage fluid transiently impairs gas exchange. Continuous electrocardiography, pulse oximetry, and capnography are required. Capnography readings may be inaccurate during bronchoscopy because of gas sampling dilution, so correlate waveform with thoracic movement and SpO2. Blood pressure should be measured every 3 to 5 minutes. The AAHA anesthesia and monitoring guidelines for dogs and cats recommend that temperature, heart rate, respiratory rate, and oxygenation be assessed throughout the procedure. Preoxygenate for 3 to 5 minutes before scope insertion. Limit lavage fluid volume and suction duration. Between lavage aliquots, ventilate manually for several breaths to restore oxygenation. Have a plan for immediate scope removal and manual ventilation if SpO2 falls below 90%.

How Should I Document the Anesthetic Record for a Patient with Reactive Airway Disease?

Document baseline respiratory status, including auscultation findings, respiratory rate, and any wheezing or increased expiratory effort. Record the bronchodilator used, its route, and the time of administration. Note the preoxygenation duration and the patient's response. During the procedure, record ventilator settings, including tidal volume, rate, peak inspiratory pressure, and end-tidal carbon dioxide values. Document any episodes of bronchospasm, hypoxemia, or hypercapnia, the interventions performed, and the patient's response. In recovery, record time to extubation, oxygen saturation on room air, and any persistent cough or wheeze. The MSD Veterinary Manual professional edition emphasizes that accurate anesthetic records support both clinical decision-making and medicolegal defense. Include a statement about the plan for postoperative bronchodilator administration and oxygen therapy.

How Do I Explain Anesthetic Risk to an Owner of a Cat with Severe Asthma?

Explain that the primary risks are bronchospasm, hypoxemia, and prolonged recovery, not the anesthetic drugs themselves. Describe the preanesthetic plan: bronchodilator administration before sedation, preoxygenation, and a smooth induction to avoid stress-induced bronchoconstriction. Mention that monitoring includes continuous oxygen and carbon dioxide measurement, and that the team is prepared to intervene with additional bronchodilators or manual ventilation. Use the analogy of a narrow hallway: the airway is already narrowed, and anesthesia can narrow it further, so the team takes steps to keep it as open as possible. Reassure the owner that most cats with well-controlled asthma tolerate anesthesia well when the disease is stable. The WSAVA Global Pain Council guidelines support a multimodal, individualized approach that addresses both comfort and respiratory stability. Offer to discuss specific concerns about recovery and home care after discharge.

Related Clinical & Scientific Guides

• Anesthetic Machine Leak Testing and Pressure Checks: A Step-by-Step Protocol
• Anesthetic Depth Assessment: Reflexes, Eye Position, and Ventilation
• Anesthesia for Patients with Obesity: Challenges and Solutions

References and Further Reading

• Ketamine: A Review of Clinical Pharmacokinetics and Pharmacodynamics in Anesthesia and Pain Therapy.. 2016.
• Prevention of infective endocarditis: guidelines from the American Heart Association: a guideline from the American Heart Association Rheumatic Fever, Endocarditis, and Kawasaki Disease Committee, Council on Cardiovascular Disease in the Young, and the Council on Clinical Cardiology, Council on Cardiovascular Surgery and Anesthesia, and the Quality of Care and Outcomes Research Interdisciplinary Working Group.. 2007.
• Prevention of infective endocarditis: guidelines from the American Heart Association: a guideline from the American Heart Association Rheumatic Fever, Endocarditis and Kawasaki Disease Committee, Council on Cardiovascular Disease in the Young, and the Council on Clinical Cardiology, Council on Cardiovascular Surgery and Anesthesia, and the Quality of Care and Outcomes Research Interdisciplinary Working Group.. 2007.
• Prevention of infective endocarditis: guidelines from the American Heart Association: a guideline from the American Heart Association Rheumatic Fever, Endocarditis and Kawasaki Disease Committee, Council on Cardiovascular Disease in the Young, and the Council on Clinical Cardiology, Council on Cardiovascular Surgery and Anesthesia, and the Quality of Care and Outcomes Research Interdisciplinary Working Group.. 2008.
• Hemodynamic and analgesic profile after intrathecal clonidine in humans. A dose-response study.. 1994.
• Dexmedetomidine: applications in pediatric critical care and pediatric anesthesiology.. 2007.
• AAHA Anesthesia and Monitoring Guidelines for Dogs and Cats. AAHA.
• WSAVA Global Pain Council Guidelines. WSAVA.
• MSD Veterinary Manual, Professional Edition. MSD Veterinary Manual.

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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.