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Chest pain

Last updated: August 17, 2023

Summarytoggle arrow icon

Nontraumatic chest pain is one of the most common reasons that patients visit the emergency department; it is also frequently encountered in both the inpatient and outpatient settings. The differential diagnosis is broad and includes cardiac (e.g., acute coronary syndrome, pericarditis), gastrointestinal (e.g., gastritis, peptic ulcer disease), pulmonary (e.g., pulmonary embolism, tension pneumothorax), musculoskeletal (e.g., costochondritis, rib contusion), and psychiatric (e.g., generalized anxiety disorder, panic disorder) etiologies. Patients with red flag features suggestive of life-threatening causes (e.g., acute coronary syndrome, pulmonary embolism) and those who are hemodynamically unstable require immediate assessment. Once life-threatening causes have been ruled out (either by patient history, examination, or rapid diagnostics), a more thorough history and examination should be performed to narrow the differential diagnosis and guide further diagnostic workup and therapy.

For traumatic causes of chest pain, see “Blunt chest trauma” and “Penetrating chest trauma.”

Initial managementtoggle arrow icon

The following recommendations are consistent with the 2021 American Heart Association (AHA) chest pain guidelines. [1]

Approach [1][2][3]

Begin management of hemodynamic instability (e.g., shock, hypertensive emergency), signs of respiratory distress, and/or respiratory failure (e.g., hypoxia, hypercapnia) as soon as they are identified.

Red flags in chest pain [1][5]

Chest tightness with radiation to the left arm, jaw, and/or back that is associated with dyspnea should be considered cardiac chest pain until proven otherwise. [1]

Immediately life-threatening causes of chest pain [1]

Diagnosticstoggle arrow icon

The diagnostic evaluation of undifferentiated chest pain aims to first rule out immediately life-threatening causes of chest pain and then determine the etiology, guided by the pretest probability of the diagnoses under consideration.

Perform a 12-lead ECG for all patients with new or evolving chest pain as soon as possible, e.g., for timely identification of acute coronary syndrome.

Laboratory studies

Routine investigations

Applicable to most patients with undifferentiated chest pain

Additional investigations

Consider ordering the following studies concurrently with routine studies based on clinical assessment and pretest probability:

Imaging

Imaging is often required to confirm the diagnosis and rule out differential diagnoses. The choice of initial modality is usually based on the patient's clinical status, the pretest probability of the underlying etiology, and resource availability.

Bedside investigations

The following studies can be performed on unstable patients in most emergency settings:

Additional investigations

The following studies typically require the patient to be stable enough for transfer to a dedicated imaging suite:

Cardiovascular causestoggle arrow icon

Cardiovascular causes of chest pain
Causes Characteristic clinical features Diagnostic findings Acute management
STEMI [7]
NSTEMI/UA [8]
Aortic dissection [9][10][11]
Cardiac tamponade [12]
  • ECG: low voltage, electrical alternans
  • CXR: enlarged cardiac silhouette
  • TTE: circumferential fluid layer, collapsible chambers , high EF, dilated IVC
    • Inspiration: Both ventricular and atrial septa move sharply to the left.
    • Expiration: Both ventricular and atrial septa move sharply to the right.
Pericarditis [13][14]
Heart failure exacerbation [15][16][17][18]
Takotsubo cardiomyopathy [19][20]
Thoracic aortic aneurysm

Pulmonary causestoggle arrow icon

Pulmonary causes of chest pain
Causes Characteristic clinical features Diagnostic findings Acute management
Pulmonary embolism [21]
Tension pneumothorax [22][23]
Pneumonia [24]
Spontaneous pneumothorax [22][25][26]
  • Sudden, sharp unilateral chest pain
  • Acute dyspnea
  • Hypoxemia
  • Hyperresonance on percussion, decreased breath sounds on the affected side
  • Crepitus
  • History of lung disease or trauma
Asthma exacerbation [27]
COPD exacerbation [28][29]
Pleural effusion [30][31]

Gastrointestinal causestoggle arrow icon

Gastrointestinal causes of chest pain
Causes Characteristic clinical features Diagnostic findings Acute management
Esophageal perforation [32][33]

GERD and erosive esophagitis [35][36]

  • Postprandial substernal chest pain, pressure, burning, reflux symptoms
  • Aggravated by lying in the supine position and certain foods (e.g., coffee, spices)
  • Epigastric tenderness
Gastritis [37]
Peptic ulcer disease [38][39][40]
Acute pancreatitis [41][42][43]

Esophageal hypermotility disorders [44][45][46][47]

  • Episodic retrosternal chest pain
  • Intermittent dysphagia, globus sensation
  • Reflux symptoms
  • Symptoms aggravated by stress and/or hot and cold food and drink
Mallory-Weiss syndrome [48][49]

Noncardiac chest pain is most commonly caused by gastrointestinal and musculoskeletal disorders. [50]

Other causestoggle arrow icon

Costochondritis [51]

Herpes zoster [52][53]

Functional chest pain [35][54]

Etiologytoggle arrow icon

Cardiac

See also ”Differential diagnosis of increased troponin” and “Differential diagnosis of ST elevations on ECG.”

Pulmonary

Musculoskeletal

Gastrointestinal

Renal

Dermatological

Hematologic/Oncologic

Rheumatologic

Psychiatric

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Referencestoggle arrow icon

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