嗎啡

用途

• As an analgesic
• As an analgesic
• For post-op pain
• For analgesia
• For analgesia
• For analgesia
• Epidural administration for pain control
• As a preanesthetic in critical patients
• For adjunctive treatment of cardiogenic pulmonary edema
• For analgesia
• For epidural (Adult horses)
• For epidural (Foals)
• For analgesia
• Epidural analgesia

給藥方式

可能的副作用

• Histamine release (hypotension, vasodilation)
• Respiratory depression
• Bronchoconstriction
• CNS depression (dogs, primates) or excitation (cats, horses, ruminants)
• Physical dependence (with chronic use)
• Hyperthermia (cattle, goats, horses, cats)
• Hypothermia (dogs, rabbits)
• Nausea and vomiting
• Decreased intestinal peristalsis and constipation
• Initial defecation (dogs)
• Panting (dogs)
• Bradycardia or tachycardia
• Histamine release (if given rapidly IV)

注意事項與禁忌

• Hypersensitivity to narcotic analgesics
• Patients receiving monoamine oxidase inhibitors (MAOIs)
• Diarrhea caused by a toxic ingestion (until toxin is eliminated)
• Scorpion envenomation (Centruroides spp. - potentiates venom)
• Conditions where vomiting is contraindicated (e.g., raised intraocular pressure)
• **Extreme Caution:** Patients with head injuries, increased intracranial pressure, acute abdominal conditions (e.g., colic - may mask clinical signs), and respiratory disease or acute respiratory dysfunction. **Caution:** Hypothyroidism, severe renal insufficiency (acute uremia), adrenocortical insufficiency (Addison's), and geriatric or severely debilitated patients. > **Important Notes:** > * **IV Administration:** Must be given slowly to avoid significant hypotension and histamine release. > * **Envenomation:** Avoid in envenomation situations, as clinical signs associated with histamine-release can be confused with anaphylaxis. > * **Uremia:** Because of its effects on vasopressin (ADH), urine flow can decrease by up to 90% in dogs given large doses.

藥物相互作用

• CNS Depressants (anesthetics, antihistamines, phenothiazines, barbiturates): May cause increased CNS or respiratory depression when used with morphine.
• Diuretics: Opiates may decrease diuretic efficacy in congestive heart failure patients.
• Monoamine Oxidase Inhibitors (MAOIs, e.g., amitraz, selegiline): Use with extreme caution; contraindicated in humans due to risk of severe opiate overdose signs.
• Skeletal Muscle Relaxants: Morphine may enhance neuromuscular blockade.
• Tricyclic Antidepressants (clomipramine, amitriptyline): Morphine may exacerbate the effects of tricyclic antidepressants.
• Warfarin: Opiates may potentiate anticoagulant activity.
• CNS depressants (anaesthetics, antihistamines, barbiturates, phenothiazines, tranquillizers): Increased CNS or respiratory depression

常見問題