Swollen Airways & Sickled Cells

Swollen Airways & Sickled Cells

Angioedema can kill by airway obstruction, and the first branch point is histamine versus bradykinin because the treatments diverge early. Sickle cell disease is not just a pain-crisis diagnosis; hypoxia, hemolysis, and falling platelets are the bedside clues to organ-threatening complications. Angioedema airway and treatment decisions Airway-first mortality risk: Airway compromise is the leading cause of death in angioedema, so voice change, drooling, tongue swelling, and inability to lie flat should push immediate reassessment. Histamine versus bradykinin: Urticaria and pruritus point toward histamine-mediated disease, while slower swelling without hives suggests bradykinin-mediated angioedema that often ignores standard allergy therapy. Difficult airway strategy: When the airway is threatened, awake intubation is preferred when feasible and every attempt needs a double setup because surgical airway is common in true crashes, a practical setup we walk through in the episode. Targeted bradykinin therapy: C1 esterase inhibitor replacement is the named first-line therapy for hereditary bradykinin angioedema, while ACE-inhibitor cases have more mixed evidence for targeted agents. Low-yield ED testing: C4, C1 inhibitor, and tryptase testing rarely changes emergency management, and CT or plain films should not decide airway safety when direct airway assessment is available. Adjuncts and disposition: Tranexamic acid has limited but promising support as a low-cost adjunct, while any tongue, soft palate, or posterior pharyngeal involvement should usually mean ICU-level observation. Sickle cell emergencies beyond pain Pain with danger scan: Treat sickle cell pain as an acute pain crisis unless proven otherwise, but do not let analgesia distract from acute chest syndrome, stroke, splenic sequestration, or severe anemia. Core laboratory signals: CBC, CMP, LDH, reticulocyte count, and urinalysis are the key initial studies; reticulocytes show marrow response and transfusion context, not whether the patient is truly in crisis. Red flags for admission: Hypoxia, tachycardia out of proportion, platelets under 150, and LDH above 1000 are warning signs for deterioration and should lower the threshold for specialist involvement. Acute chest recognition: Acute chest syndrome is vaso-occlusion in the lungs and a leading cause of death; chest x-ray can mimic pneumonia, while diffuse ground-glass on CT makes acute chest less likely. Stroke means exchange: A focal neurologic deficit in a patient with sickle cell disease should be treated as sickle-related stroke until proven otherwise, with exchange transfusion prioritized early. We get into the imaging and line-timing nuances in the chapter. Analgesia and fluids: Opioids are first-line and often need repeat dosing every 30 minutes early, while routine large-volume normal saline is a poor default in uncomplicated pain crises.