Chapter 49: Anti-Inflammatory & Antigout Drugs

Inflammation is described as a protective response mediated by compounds like prostaglandins and leukotrienes, which are derived from arachidonic acid via the cyclooxygenase (COX) and lipoxygenase pathways. The primary drug class discussed is nonsteroidal anti-inflammatory drugs (NSAIDs), a diverse group including salicylates (like acetylsalicylic acid or Aspirin), propionic acid derivatives (such as ibuprofen and naproxen), and acetic acid derivatives (like indomethacin). NSAIDs primarily achieve their analgesic, antipyretic, and anti-inflammatory effects by blocking COX enzymes. A key distinction is made between non-selective NSAIDs and COX-2 inhibitors (such as celecoxib), the latter of which were designed to minimize gastrointestinal (GI) ulceration and bleeding by selectively targeting the COX-2 isoform, although serious GI and cardiovascular risks still exist. Aspirin is uniquely highlighted for its irreversible antiplatelet activity, offering protection against thrombotic cardiovascular events, but its use in children is strictly contraindicated due to the risk of Reye’s syndrome. The chapter also explores gout, a condition characterized by hyperuricemia and the deposition of uric acid crystals. Antigout drugs are categorized by their mechanism: xanthine oxidase inhibitors (like allopurinol) decrease uric acid production; uricosurics (like probenecid) increase uric acid excretion; and colchicine is used to reduce the acute inflammatory response during an attack. Nursing management emphasizes thorough patient assessment for pre-existing liver or kidney dysfunction, monitoring for signs of toxicity (such as salicylism with Aspirin), and ensuring patient adherence to regimens, which often includes high fluid intake and dietary modification (purine restriction) for gout management.