Pain Management for Burn Victims

While burns are categorized based on depth, area, and severity, pain perception does not consistently align with these criteria. Due to individual differences in pain thresholds, coping mechanisms, and physiological responses, patients may endure varying levels of pain despite similar injuries. The most immediate and intense form of burn pain arises from inflammatory nociceptive pain resulting from tissue trauma. This type of pain is often followed and potentially exacerbated by procedural pain associated with burn wound treatment, such as surgical debridement, grafting, and dressing changes. As burn wounds progress towards healing, neuropathic pain characterized by a persistent burning or throbbing sensation may emerge, adding to the overall discomfort. Although all burns induce pain, it's conventionally believed that deeper, full-thickness burns are less painful than superficial and partial thickness burns due to nerve damage. However, this assumption doesn't always hold true in clinical practice. Effective management of burn pain necessitates a multimodal approach tailored to individual patient needs and circumstances. For hospitalized burn patients, opioids serve as the cornerstone of pharmacological pain control. Burn patients often require higher opioid doses, exceeding standard recommendations, posing a challenge in managing tolerance throughout burn care. Animal studies on burn injury indicate alterations in spinal cord receptors, including downregulation of opioid receptors and upregulation of PKC-γ and N-methyl-D-aspartate (NMDA) receptors. Consequently, ketamine requirements for anesthesia in burn patients may also be elevated. Clonidine, dexmedetomidine, ketamine, and methadone have demonstrated effectiveness in treating pain in burn patients who develop extreme tolerance to morphine. Dexmedetomidine, in particular, has been utilized to provide sedation and analgesia for burn patients, reducing opioid requirements and delirium compared to benzodiazepines. Ketamine offers numerous advantages for induction and maintenance of anesthesia in burn patients, including hemodynamic stability, airway patency preservation, and decreased airway resistance. It may be preferred in scenarios where airway manipulation is to be avoided, such as intensive dressing changes or staple removal procedures. Administration of benzodiazepines alongside ketamine can mitigate dysphoria, while co-administered glycopyrrolate helps manage increased secretions associated with ketamine use. However, close monitoring is essential to monitor potential myocardial depressant effects, especially in patients with prior drug use. Anxiety commonly accompanies burn injuries and may exacerbate pain perception. Anxiolytic drugs, particularly benzodiazepines and antipsychotic medications like haloperidol and quetiapine, are often used in conjunction with opioids to alleviate anxiety and agitation associated with burns. Antidepressants may enhance opiate-induced analgesia, especially in patients with chronic neuropathic pain. Nonetheless, benzodiazepine use can lead to short-term and long-term delirium, necessitating careful consideration of their administration.

Master Anesthesia

Master Anesthesia

Pain Management for Burn Victims

This lesson is part of “Beyond the Burn: Navigating Modern Burn Care”

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