Emergency and Acute Medicine: Pediatric Cervical Spine Injury​

Pediatric cervical spine injury is relatively uncommon, occurring in only about 1–2% of children with severe blunt trauma, but it carries significant risk due to unique anatomical and biomechanical features. Younger children, particularly those under 8 years of age, are more prone to upper cervical spine injuries (C1–C3) because of a higher spinal fulcrum, proportionally larger head size, weaker neck musculature, ligamentous laxity, and immature vertebral structures. In contrast, older children tend to sustain lower cervical spine and more diffuse injuries, including vertebral fractures. Certain congenital or syndromic conditions—such as Down syndrome and other skeletal disorders—further increase susceptibility to instability and injury.


A distinct feature of pediatric trauma is spinal cord injury without radiographic abnormality (SCIWORA), which occurs more frequently in younger children. In this condition, children may present with clear neurologic deficits despite normal initial imaging. Symptoms may include spinal shock, weakness, or sensory disturbances, and importantly, these symptoms may be transient or delayed, sometimes appearing hours to days after the injury.


The most common causes of pediatric cervical spine injury vary with age. In neonates, birth-related trauma such as breech delivery may be responsible. In younger children, motor vehicle collisions and falls predominate, while in older children and adolescents, sports-related injuries become more common. Clinically, patients may present with neck pain, restricted range of motion, or neurologic deficits, although symptoms may be subtle or masked by altered mental status or distracting injuries. Abnormal vital signs such as hypotension, bradycardia, or respiratory compromise may indicate spinal cord involvement.


On examination, findings may include midline cervical tenderness, muscle spasm, and neurologic abnormalities such as paresthesias, weakness, flaccidity, or paralysis. Specific spinal cord syndromes may also be identified. For example, anterior cord syndrome results in motor paralysis with loss of pain sensation but preserved proprioception, while central cord syndrome typically causes greater weakness in the upper extremities than the lower. Brown-Séquard syndrome presents with asymmetric motor and sensory deficits. In preverbal children, assessment is particularly challenging, as they may not be able to communicate symptoms effectively.


Evaluation requires a cautious and systematic approach. Cervical spine radiographs are the initial imaging modality in children with concerning features such as pain, neurologic symptoms, altered consciousness, or significant mechanism of injury. Standard views include anteroposterior, lateral, and odontoid projections, ensuring visualization of all cervical levels. However, interpretation can be difficult due to normal developmental variants, such as pseudosubluxation of C2 on C3 or incomplete ossification of vertebral structures, which may mimic injury. CT scanning is indicated when radiographs are inconclusive or suspicious, while MRI is essential when spinal cord injury is suspected, particularly in cases of SCIWORA.


Clinical decision tools such as the NEXUS criteria may be applied in children older than 8 years, but are less reliable in younger patients. Therefore, a lower threshold for imaging is often necessary in younger children.


Management begins with strict cervical spine immobilization, using appropriately sized collars and supportive padding. Due to the relatively large head in young children, padding beneath the torso may be required to maintain neutral alignment and prevent neck flexion. During airway management, in-line stabilization must be maintained, and patients should be logrolled carefully. In sports injuries, helmets should generally be left in place unless they interfere with airway management.


In the emergency setting, any child with neurologic deficits or confirmed injury requires urgent neurosurgical or orthopedic consultation. The use of high-dose corticosteroids such as methylprednisolone remains controversial and should only be considered in consultation with specialists, given the risk of complications such as immunosuppression.


All children with altered mental status, neurologic deficits, or confirmed fractures should be admitted for monitoring and further management. Children with normal mental status, no imaging abnormalities, and no neurologic findings may be discharged with strict instructions. Importantly, caregivers must be educated about the possibility of delayed symptoms in SCIWORA, and advised to return immediately if the child develops weakness, numbness, or paralysis.


Key pitfalls include failure to recognize the unique anatomy of the pediatric cervical spine, misinterpreting normal variants as injuries or vice versa, and underestimating the potential for delayed neurologic deterioration. Maintaining immobilization throughout evaluation, using appropriate imaging, and ensuring close follow-up are essential to prevent missed injuries and improve outcomes.

Emergency and Acute Medicine: Spondylolysis and Spondylolisthesis


Spondylolysis is a structural defect in the pars interarticularis, the portion of bone between the superior and inferior articular facets of a vertebra. This defect may occur on one side or both sides, with bilateral involvement significantly increasing the risk of progression to spondylolisthesis, a condition in which one vertebra slips forward over the one beneath it. Spondylolisthesis affects approximately 5% of the population and is more common in males. About half of patients with spondylolysis will develop some degree of vertebral slippage, and roughly half of those individuals will experience symptoms. This condition often leads to nerve root compression, frequently causing sciatica.


Spondylolisthesis is categorized based on underlying cause and severity. Etiologic types include congenital (dysplastic), stress-related (isthmic), degenerative, traumatic, and pathologic forms. Severity is graded using the Meyerding classification, ranging from Grade I (≤25% slippage) to Grade IV (75–100%). The most commonly affected level is L5 slipping over S1, followed by L4 over L5. In pediatric populations, spondylolysis is a common cause of significant low back pain, particularly during adolescent growth spurts. It is frequently seen in young athletes engaged in sports involving repetitive spinal extension, such as gymnastics, diving, and football.


The exact cause of spondylolysis remains uncertain but is thought to involve a combination of congenital susceptibility, altered bone density, and repetitive microtrauma. Symptoms usually develop gradually, unless triggered by acute injury. Patients commonly report low back pain associated with muscle stiffness or spasms, which may radiate to the proximal legs. Pain is typically worsened by standing, walking, or hyperextension and relieved by sitting or forward bending. Neurologic symptoms are generally absent unless significant vertebral displacement leads to nerve compression.


On physical examination, patients may demonstrate a hyperlordotic posture with a shortened trunk appearance and tight hamstrings. A classic diagnostic maneuver is the one-legged hyperextension test, where standing on one leg and leaning backward reproduces pain on the affected side. In more advanced cases, a palpable step-off may be detected over the lumbar spine. Neurologic examination is usually normal but may reveal dermatomal sensory or motor deficits if nerve involvement is present.


Diagnosis is primarily radiologic. Plain lumbosacral spine radiographs, especially oblique views, may reveal a defect in the pars interarticularis, often described as the “Scottie dog” sign with a “broken neck.” Lateral views help identify vertebral slippage. CT scanning provides more detailed visualization of bony abnormalities and is useful in evaluating fracture acuity and healing, while MRI can assess nerve root compression and other soft tissue pathology. In children, imaging is pursued more readily due to the higher risk of progression.


Management is typically conservative. Treatment focuses on pain control, activity modification, and gradual return to activity once symptoms improve. Patients are advised to avoid activities involving repetitive spinal extension for several weeks. Physical therapy and, in some cases, bracing may be considered. Surgical intervention, usually spinal fusion, is reserved for patients with severe symptoms, high-grade slippage (Grade III or IV), or those who fail conservative therapy.


Medications may include NSAIDs, muscle relaxants, and, when necessary, short-term opioids for pain control. Hospital admission is indicated for patients who are unable to ambulate, cannot manage pain at home, or develop new or worsening neurologic deficits. Most patients can be managed as outpatients with appropriate follow-up and education. Pediatric patients require especially close monitoring due to the higher likelihood of progression.


Important pitfalls include missing the diagnosis in adolescents with persistent back pain, failing to recognize progressive neurologic deficits, and overlooking alternative diagnoses such as infection, tumor, or disc disease. Early identification and appropriate management are key to preventing progression and long-term complications.

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Emergency and Acute Medicine - Skin Cancer


Skin cancer is the most common cancer in the United States, with a lifetime risk of approximately 1 in 6 individuals. Its incidence continues to rise, largely due to ultraviolet (UV) radiation exposure. Skin cancers are broadly categorized into nonmelanoma types—such as basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)—and melanoma, which is less common but far more lethal.


Actinic keratosis is a premalignant lesion caused by chronic sun exposure. It appears as a rough, scaly, pink lesion on sun-exposed areas and carries a small but real risk (0.1–10%) of progression to SCC. BCC is the most common skin cancer, accounting for about 75% of nonmelanoma cases. It typically presents as a painless, pearly or waxy papule with telangiectasia and may ulcerate or bleed easily. It is locally invasive but rarely metastasizes and is most often found on the head and neck of fair-skinned individuals.


SCC is the second most common skin cancer and may arise from actinic keratosis. It presents as a firm, raised, keratotic lesion that may ulcerate and become painful as it invades surrounding tissue. Unlike BCC, SCC has the potential to metastasize to regional lymph nodes and distant sites, particularly when arising from mucosal surfaces or in immunocompromised individuals.


Melanoma arises from melanocytes and accounts for only about 5% of skin cancers but causes the majority of skin cancer-related deaths. It is strongly associated with sun exposure, especially blistering sunburns, and risk factors include fair skin, multiple or atypical nevi, family history, and immunosuppression. The ABCDE criteria are key for identifying suspicious lesions: asymmetry, border irregularity, color variation, diameter greater than 6 mm, and evolution or enlargement. Subtypes include superficial spreading melanoma (most common), nodular melanoma (more aggressive), lentigo maligna melanoma, and acral lentiginous melanoma, which occurs on palms, soles, and under nails.


Diagnosis of skin cancer is primarily clinical but must be confirmed with biopsy, which is typically arranged outside the emergency setting. Imaging may be used in advanced cases to assess metastasis, particularly in melanoma and aggressive SCC.


In the emergency department, management focuses on recognizing suspicious lesions and ensuring appropriate referral rather than definitive treatment. Most lesions do not require acute intervention unless complications such as bleeding, infection, or metastatic disease are present. Patients should be discharged with clear instructions for urgent dermatologic evaluation and biopsy.


Key points include maintaining a high index of suspicion for changing or atypical skin lesions, educating patients on sun protection (including both UVA and UVB exposure), and emphasizing the importance of early diagnosis. Patients with one skin cancer are at significant risk (30–50%) of developing another within five years, making follow-up essential.

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Emergency and Acute Medicine - Shock


Shock is a state of inadequate tissue perfusion in which blood flow is insufficient to meet cellular metabolic demands. As a result, tissues do not receive enough oxygen and are unable to clear toxic metabolic byproducts. If untreated, shock progresses from impaired perfusion to organ dysfunction and ultimately death. Major categories include hypovolemic shock, cardiogenic or obstructive shock, septic shock, neurogenic shock, anaphylactic shock, and pharmacologic shock. Although the mechanisms differ, all forms lead to impaired oxygen delivery and end-organ injury.


Hypovolemic shock results from decreased intravascular volume, most commonly from hemorrhage or severe fluid loss. Acute onset should raise concern for bleeding, while a more progressive course with elevated hematocrit, blood urea nitrogen, and creatinine may suggest dehydration. Common causes include trauma, gastrointestinal bleeding, ruptured ectopic pregnancy, postpartum hemorrhage, vomiting, diarrhea, burns, ruptured aneurysm, and retroperitoneal bleeding. Cardiogenic or obstructive shock occurs when cardiac output is inadequate despite sufficient intravascular volume. It may result from myocardial infarction, cardiomyopathy, arrhythmias, myocarditis, valvular disease, tamponade, pulmonary embolism, or tension pneumothorax. Septic shock begins with overwhelming infection that triggers release of inflammatory mediators, producing vasodilation, capillary leak, and reduced systemic vascular resistance, later followed by myocardial depression. Neurogenic shock occurs when spinal cord injury disrupts sympathetic tone, leading to vasodilation and sometimes bradycardia, especially with lesions above T4. Anaphylactic shock results from massive mast cell degranulation after allergen exposure, leading to vasodilation, capillary leak, and airway compromise. Pharmacologic shock may result from drug-induced vasodilation or myocardial depression.


Patients in shock commonly present with hypotension, weak peripheral pulses, tachycardia, tachypnea, decreased urine output, diaphoresis, lethargy, or obtundation. History should focus on identifying the likely cause, including trauma, infection, allergic exposure, medication use, cardiac symptoms, or fluid loss. Physical examination should be targeted to the likely type of shock. In hypovolemic shock, neck veins are typically flat, mucous membranes are dry, and extremities are cold. In cardiogenic shock, jugular venous distention is often present, mucous membranes are moist, and extremities are cold. Early septic shock may show flat neck veins, dry mucous membranes, and warm extremities, though later patients can become cold and mottled. Additional findings such as wounds, urticaria, cellulitis, cardiac murmurs, or pelvic instability may help establish the diagnosis.


The workup of shock aims to identify both the type of shock and its underlying cause. Laboratory studies usually include hemoglobin and hematocrit, white blood cell count, electrolytes, glucose, coagulation studies, cardiac enzymes, urinalysis, pregnancy testing when appropriate, and serum lactate, which is a useful marker of tissue hypoperfusion. Imaging often includes chest radiograph, electrocardiogram, abdominal ultrasound, and sometimes computed tomography once the patient is stabilized. Electrocardiography may reveal ischemia, tamponade with electrical alternans or low voltage, or right-heart strain with pulmonary embolism.


Initial management centers on aggressive stabilization of airway, breathing, and circulation. Large-bore IV access is essential, and central venous access may be needed in severe cases. Oxygen should be administered, and fluid resuscitation should begin promptly in most noncardiogenic forms of shock. Active bleeding should be controlled immediately, including the use of direct pressure and pelvic stabilization when indicated. Hypovolemic shock requires rapid crystalloid resuscitation, typically 2 to 3 liters initially, followed by blood products if blood pressure does not improve. Definitive control of bleeding is crucial. Cardiogenic shock requires treatment of the specific cause, such as reperfusion for myocardial infarction, pericardiocentesis for tamponade, or treatment of dysrhythmias, with vasopressors such as norepinephrine or dopamine as needed. Septic shock requires aggressive crystalloid administration, early antibiotics, maintenance of urine output above 30 mL/hour, and vasopressor support, with norepinephrine preferred as first-line therapy. Anaphylactic shock requires prompt airway management, epinephrine, antihistamines, corticosteroids, and bronchodilators if bronchospasm is present. Pharmacologic shock may require decontamination, antidotes, and inotropic support. Neurogenic shock is treated supportively, with spinal stabilization and hemodynamic support.


All patients with shock require admission, and most with persistent shock need ICU-level monitoring. A small number whose shock is completely and definitively reversed in the emergency department may be managed outside the ICU, but no patient actively in shock should be discharged home. Important clinical priorities are to identify the cause quickly, begin aggressive fluid resuscitation early, and add vasopressors when indicated to minimize prolonged tissue hypoxia.

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​Emergency and Acute Medicine - Shoulder Dislocation


Shoulder dislocation is a common injury due to the highly mobile and inherently unstable nature of the glenohumeral joint. The majority are anterior dislocations (90–96%), typically caused by forces applied to an abducted and externally rotated arm. Posterior dislocations are less common and frequently missed; they occur when force is applied to an adducted, internally rotated arm, often during seizures, electrocution, or trauma. Inferior dislocations (luxatio erecta) are rare and result from hyperabduction, often associated with falls from height and frequently accompanied by neurovascular injury. In children, true dislocations are uncommon and fractures should be suspected, while in older adults, associated fractures are more frequent.


Patients typically present with severe shoulder pain and limited movement. In anterior dislocation, the shoulder appears “squared off,” with a prominent acromion and anterior fullness, and the arm is held slightly abducted and externally rotated. Posterior dislocation presents with the arm adducted and internally rotated, a prominent coracoid process, and a posterior bulge. Inferior dislocation is distinctive, with the arm fixed overhead and the humeral head sometimes palpable along the chest wall.


Evaluation must always include careful assessment of neurovascular status, especially the axillary nerve, both before and after any manipulation. Imaging is essential prior to reduction unless delay would be harmful. Standard radiographs should include anteroposterior and either axillary or scapular Y views. Associated findings may include Hill–Sachs lesions, Bankart lesions, or fractures of the greater tuberosity. Posterior dislocations may show the classic “light bulb” sign on X-ray and are often missed without appropriate imaging views.


Management requires prompt reduction to minimize complications such as post-traumatic arthritis. Adequate analgesia and muscle relaxation are critical, using procedural sedation (e.g., opioids and benzodiazepines, or agents like etomidate or propofol) or intra-articular local anesthetic. Several reduction techniques can be used for anterior dislocations, including scapular manipulation, Stimson technique, traction-countertraction, and slow external rotation. Posterior and inferior dislocations require modified reduction approaches, often involving traction and directed manipulation.


After successful reduction, confirm alignment with repeat imaging and reassess neurovascular status. Immobilize the shoulder in a sling or immobilizer. Younger patients typically require immobilization for 2–3 weeks, while shorter durations are recommended in older patients to prevent stiffness and frozen shoulder.


Admission is indicated if reduction fails, if general anesthesia is required, or if there is neurovascular compromise. Most patients with successful reduction can be discharged with immobilization and arranged orthopedic follow-up. Recurrent dislocations may require surgical intervention.


A key clinical point is to always document axillary nerve function prior to reduction. Missing posterior dislocations and failing to identify associated fractures or nerve injury are common pitfalls.

Emergency and Acute Medicine - Sick Sinus Syndrome


Sick sinus syndrome (SSS) is a collective term describing dysfunction of the sinoatrial (SA) node, resulting in impaired automaticity and abnormal impulse generation. It is most commonly caused by progressive degenerative fibrosis of the sinus node and typically affects older adults, with a mean age over 65 years. The condition is characterized by intermittent or persistent bradyarrhythmias, often without appropriate escape rhythms, and may include a combination of sinus pauses, SA block, and alternating tachyarrhythmias (tachy–brady syndrome). It may also present with delayed recovery of sinus node activity following cardioversion.


Etiologies can be intrinsic or extrinsic. Intrinsic causes include idiopathic fibrosis (most common), ischemic heart disease affecting the SA node, cardiomyopathy, infiltrative diseases such as amyloidosis, inflammatory conditions, and surgical trauma. Extrinsic causes—while not true SSS—can mimic the condition and include medications (e.g., β-blockers, calcium channel blockers, digoxin, amiodarone), electrolyte abnormalities, hypothyroidism, hypothermia, hypoglycemia, and systemic infections such as sepsis. In pediatric patients, SSS may be associated with congenital heart disease or post-surgical complications.


Clinical presentation varies widely. Some patients are asymptomatic, while others experience symptoms due to cerebral hypoperfusion, such as syncope, presyncope, dizziness, fatigue, or altered mental status. Cardiovascular symptoms may include palpitations, chest pain, dyspnea, and exercise intolerance. Physical findings often reveal bradycardia or alternating bradycardia and tachycardia. In severe cases, patients may present with transient ischemic attacks or stroke.


Diagnosis begins with a 12-lead ECG, which may show sinus bradycardia, sinus pauses, SA block, atrial fibrillation with slow ventricular response, or tachy–brady patterns. However, ECG findings may be intermittent, so Holter monitoring or rhythm strips may be necessary. Laboratory evaluation should include electrolytes, thyroid function tests, cardiac markers, and drug levels when appropriate. Imaging such as chest radiography may assist in identifying underlying causes.


Management depends on symptom severity and hemodynamic stability. In unstable patients with symptomatic bradycardia (e.g., hypotension, altered mental status, chest pain), initial treatment includes atropine. If ineffective, transcutaneous pacing should be initiated, followed by transvenous pacing if needed. In patients with tachy–brady syndrome, unstable tachyarrhythmias require cardioversion, but clinicians must anticipate significant post-conversion bradycardia.


Stable patients should be monitored closely, with correction of reversible causes such as medication effects, electrolyte disturbances, hypoxia, or hypothermia. Use of AV nodal blocking agents (e.g., β-blockers, calcium channel blockers, digoxin) should be approached cautiously, as they may worsen bradycardia.


The definitive treatment for symptomatic SSS is placement of a permanent pacemaker, which provides a baseline heart rate and prevents symptomatic bradyarrhythmias. Patients with concurrent atrial fibrillation may require anticoagulation and additional rate or rhythm control strategies.


Patients with new-onset or symptomatic SSS should be admitted for monitoring and cardiology evaluation. Asymptomatic patients may be managed as outpatients with further rhythm monitoring.


Key pitfalls include missing intermittent arrhythmias on ECG and precipitating severe bradycardia with nodal-blocking medications without pacing backup.

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Emergency and Acute Medicine - Sickle Cell Disease


Sickle cell disease (SCD) is an autosomal recessive hemoglobinopathy caused by abnormal hemoglobin S (HbS), which polymerizes under stress and deforms red blood cells into a sickle shape. These rigid cells lead to chronic hemolysis, vaso-occlusion, and tissue ischemia or infarction. The disease results from a single amino acid substitution in the hemoglobin gene and primarily affects individuals of African, Mediterranean, Middle Eastern, and Asian descent. Disease severity varies widely depending on genotype, with HbSS being the most severe, while sickle cell trait (HbAS) is usually asymptomatic but may pose risks under extreme physiological stress.


SCD is characterized by chronic hemolytic anemia and progressive vasculopathy, leading to complications such as pulmonary hypertension, systemic hypertension, gallstones, leg ulcers, and priapism. Acute vaso-occlusive crises (VOC) are a hallmark and can affect virtually any organ system. Common acute complications include bone pain crises due to infarction of bone marrow, acute chest syndrome (a major cause of mortality characterized by pulmonary infiltrates, fever, and respiratory symptoms), splenic sequestration (which can cause rapid circulatory collapse, especially in children), aplastic crisis (often due to Parvovirus B19 causing severe anemia), cerebrovascular events (stroke or TIA), severe infections due to functional asplenia, and priapism.


Triggers for crises include infection, dehydration, hypoxia, acidosis, emotional stress, trauma, surgery, weather changes, and pregnancy. Clinically, patients may present with pain crises (commonly affecting bones, joints, chest, or abdomen) or with complications such as fever, respiratory distress, neurologic deficits, or signs of anemia. Importantly, patients in severe pain may not exhibit typical autonomic signs like tachycardia.


Evaluation requires a thorough history and physical examination, focusing on identifying complications and distinguishing typical from atypical presentations. Laboratory studies include CBC (with comparison to baseline hemoglobin), reticulocyte count (low in aplastic crisis), markers of hemolysis (bilirubin, LDH), and cultures if infection is suspected. Imaging is directed by symptoms, such as chest radiography for suspected acute chest syndrome or CT/MRI for neurologic symptoms.


Management focuses on prompt recognition and treatment of complications, aggressive pain control, and supportive care. Pain crises are treated with rapid and adequate analgesia, typically with IV opioids such as morphine or hydromorphone, along with adjuncts like acetaminophen or NSAIDs. Hydration is important but must be carefully balanced to avoid complications such as pulmonary edema or acidosis.


Specific complications require targeted therapy. Acute chest syndrome is treated with oxygen, bronchodilators, incentive spirometry, and possibly exchange transfusion. Splenic sequestration and aplastic crises may require blood transfusions. Stroke and severe complications often necessitate exchange transfusion. Priapism is managed initially with aspiration and intracavernosal medications, with escalation to exchange transfusion if needed. Empiric antibiotics are essential when infection is suspected.


Admission is required for refractory pain, significant complications, infection, or symptomatic anemia. ICU care is indicated for severe cases such as acute chest syndrome with hypoxemia, stroke, or hemodynamic instability. Patients may be discharged only when pain is controlled and no complications are present, with close follow-up arranged.


Key clinical points include aggressively treating pain, recognizing life-threatening complications early, and not relying on typical pain signs. Distinguishing a routine pain crisis from serious complications like acute chest syndrome or infection is critical in emergency care.

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​Emergency and Acute Medicine – Sleep Apnea


Sleep apnea is a disorder characterized by repeated cessation of breathing during sleep, defined as apneic episodes lasting more than 10 seconds and often associated with brief arousals or oxygen desaturation greater than 3%. It is strongly associated with obesity, male sex over 40 years of age, upper airway abnormalities, hypothyroidism, smoking, and alcohol or sedative use. Sleep apnea is linked to serious comorbidities including cardiac dysrhythmias (especially atrial fibrillation), heart failure, myocardial infarction, stroke, hypertension, and increased risk of motor vehicle accidents.


Epidemiologically, sleep apnea affects approximately 9% of middle-aged men and 4% of middle-aged women, with up to 80% of moderate-to-severe cases remaining undiagnosed. There are three main types: obstructive sleep apnea (most common, ~84%), caused by upper airway collapse despite respiratory effort; central sleep apnea (~0.4%), due to lack of respiratory drive; and complex sleep apnea (~15%), which combines features of both.


Patients commonly present with excessive daytime sleepiness, loud snoring, irritability, poor concentration, depression, and decreased libido. Often, a bed partner reports witnessed apneic episodes. Physical findings may include obesity, hypertension, hypoxemia, large neck circumference, craniofacial abnormalities, macroglossia, enlarged tonsils, and signs of pulmonary hypertension such as elevated jugular venous pressure.


Initial evaluation in the emergency setting includes pulse oximetry, ECG, and chest radiography. Arterial blood gas (ABG) analysis is the best test to demonstrate hypercarbia and hypoxemia. However, definitive diagnosis requires polysomnography, which identifies more than five apneic episodes per hour and is typically arranged outside the ED.


Management in the emergency setting focuses on airway stabilization. Basic measures include chin lift or jaw thrust, supplemental oxygen, and airway adjuncts such as oral or nasal airways. Bag-valve-mask ventilation may be challenging and often requires a two-person technique. Continuous positive airway pressure (CPAP) is the standard treatment, acting as a pneumatic splint to maintain airway patency. BiPAP may be used in patients requiring higher pressures or with coexisting respiratory conditions.


Airway management can be particularly difficult in these patients due to anatomical factors such as excess pharyngeal tissue and higher Mallampati scores. Clinicians should prepare for difficult intubation, have alternative airway devices available (e.g., laryngeal mask airway, bougie), and be ready for surgical airway if needed. Sedatives should be avoided whenever possible, as they worsen airway obstruction.


Long-term management emphasizes CPAP compliance and weight loss, which significantly reduce blood pressure, metabolic complications, and cardiovascular risk. Dental devices and surgical options may be considered but are less predictable. Patients should be referred to primary care or a pulmonologist for further evaluation and management, and cardiology referral is appropriate if complications such as heart failure or arrhythmias are present.


Patients may be discharged if they maintain adequate oxygenation (>85%) with available home support and have low risk of deterioration. Admission is required for ventilatory failure, need for intubation, or hemodynamic instability. Key points include recognizing the increased risk of cardiovascular disease, avoiding sedatives, anticipating difficult airway management, and reinforcing the importance of CPAP adherence.