Systematic Approach to Chest Pain

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Introduction

Chest pain is a common and multifactorial symptom with potential causes ranging from benign to life-threatening. This article provides a comprehensive overview of chest pain, categorized by system, to help clinicians approach the diagnosis and management of patients presenting with this symptom. Each condition is addressed with history taking, physical examination, diagnostic tests, and management.

1. Cardiac Causes of Chest Pain

a) Acute Coronary Syndrome (ACS)

History Taking: Retrosternal chest pain, described as crushing, tight, or squeezing, radiating to the left arm, jaw, or neck. Symptoms worsen with exertion and improve with rest. Often associated with sweating, nausea, and dyspnea. Risk factors include smoking, diabetes, hypertension, and family history of coronary artery disease.
Physical Exam: May show diaphoresis, tachycardia, hypotension, and S3/S4 heart sounds.
Diagnostic Tests:
- ECG: ST elevation in STEMI, ST depression, or T-wave inversion in NSTEMI.
- Troponin levels elevated in myocardial infarction.
- Coronary angiography for definitive diagnosis.
Management:
- STEMI: Immediate reperfusion with PCI or thrombolysis.
- NSTEMI/Unstable Angina: Anticoagulation, dual antiplatelet therapy, beta-blockers, and statins.

b) Stable Angina

History Taking: Predictable chest pain triggered by exertion and relieved by rest or nitroglycerin.
Physical Exam: Usually normal between episodes.
Diagnostic Tests:
- Stress testing.
- Coronary angiography if needed.
Management:
- Beta-blockers, calcium channel blockers, nitrates.
- Lifestyle modification and statin therapy for long-term prevention.

c) Severe Aortic Stenosis (AS)

History Taking: Exertional chest pain, syncope, and dyspnea. Typically seen in older adults with a history of heart murmurs.
Physical Exam: Systolic ejection murmur heard at the right second intercostal space, radiating to the carotids. Weak, delayed carotid upstroke.
Diagnostic Tests:
- Echocardiogram to assess valve area and gradient.
- ECG may show left ventricular hypertrophy.
Management:
- Aortic valve replacement for symptomatic patients or those with severe stenosis.

d) Hypertrophic Obstructive Cardiomyopathy (HOCM)

History Taking: Exertional chest pain, syncope, or dyspnea, often in young athletes. Family history of sudden cardiac death.
Physical Exam: Harsh systolic murmur that increases with Valsalva or standing.
Diagnostic Tests:
- Echocardiogram showing asymmetric septal hypertrophy.
- ECG may show left ventricular hypertrophy or abnormal Q waves.
Management:
- Beta-blockers or calcium channel blockers to reduce symptoms.
- Septal myectomy or alcohol ablation in severe cases.

e) Pericarditis

History Taking: Sharp, pleuritic chest pain that worsens with deep breaths and lying flat, relieved by sitting up. May follow viral illness or autoimmune diseases.
Physical Exam: Pericardial friction rub on auscultation.
Diagnostic Tests:
- ECG: Diffuse ST elevation and PR depression.
- Echocardiogram may show pericardial effusion.
Management:
- NSAIDs or colchicine for inflammation.
- Pericardiocentesis for large effusions or tamponade.

2. Great Vessel Causes of Chest Pain

Aortic Dissection

History Taking: Sudden, severe, tearing chest or back pain, often radiating to the abdomen. History of hypertension or connective tissue disorders (e.g., Marfan syndrome).
Physical Exam: Pulse deficits, blood pressure differences between arms, new diastolic murmur of aortic regurgitation.
Diagnostic Tests:
- Chest X-ray may show widened mediastinum.
- CT Angiography for definitive diagnosis.
Management:
- Type A Dissection: Urgent surgical repair.
- Type B Dissection: Medical management with beta-blockers and antihypertensives.

3. Pulmonary Causes of Chest Pain

a) Pneumothorax

History Taking: Sudden onset sharp, pleuritic chest pain and dyspnea. Occurs spontaneously or secondary to trauma.
Physical Exam: Decreased breath sounds, hyperresonance to percussion, and tracheal deviation in tension pneumothorax.
Diagnostic Tests:
- Chest X-ray showing pleural air and loss of lung markings.
Management:
- Tension Pneumothorax: Immediate needle decompression followed by chest tube placement.
- Spontaneous Pneumothorax: Small ones may resolve on their own; larger ones require chest tube insertion.

b) Pneumonia

History Taking: Pleuritic chest pain, productive cough, fever, and dyspnea. History of recent respiratory infection.
Physical Exam: Decreased breath sounds, crackles, or pleural rub.
Diagnostic Tests:
- Chest X-ray showing consolidation.
- Sputum cultures and blood tests.
Management:
- Empiric antibiotics based on the likely pathogen.
- Oxygen supplementation if hypoxic.

c) Empyema Thoracis

History Taking: Pleuritic chest pain, fever, and malaise following untreated pneumonia.
Physical Exam: Decreased breath sounds, dullness to percussion.
Diagnostic Tests:
- Chest X-ray or CT showing fluid collection.
- Thoracentesis for fluid analysis.
Management:
- Drainage via chest tube or surgery.
- Antibiotic therapy.

d) Parapneumonic Effusion

History Taking: Chest pain worsened by deep breathing, typically secondary to pneumonia.
Physical Exam: Decreased breath sounds and dullness to percussion over the effusion.
Diagnostic Tests:
- Chest X-ray or ultrasound showing pleural fluid.
Management:
- Thoracentesis for large effusions.
- Treat underlying pneumonia with antibiotics.

e) Pulmonary Embolism (PE)

History Taking: Sudden onset pleuritic chest pain, dyspnea, hemoptysis, and leg swelling. History of recent surgery, immobilization, or known deep vein thrombosis.
Physical Exam: Tachycardia, tachypnea, and possible signs of DVT.
Diagnostic Tests:
- CT Pulmonary Angiography for diagnosis.
- D-dimer levels elevated in low-risk patients.
Management:
- Anticoagulation (heparin or direct oral anticoagulants).
- Thrombolysis for massive PE.

4. Gastrointestinal Causes of Chest Pain

a) Gastroesophageal Reflux Disease (GERD)

History Taking: Burning retrosternal pain worsened by meals or lying flat, often accompanied by regurgitation or dysphagia.
Physical Exam: Typically normal, though epigastric tenderness may be present.
Diagnostic Tests:
- Clinical diagnosis based on symptoms; endoscopy for refractory cases.
Management:
- Proton pump inhibitors (PPIs), H2 blockers, and lifestyle modifications (elevating head of bed, avoiding late meals).

b) Esophageal Spasm

History Taking: Intermittent, non-exertional chest pain that may mimic angina, relieved by nitrates or calcium channel blockers.
Physical Exam: Usually unremarkable.
Diagnostic Tests:
- Esophageal manometry or barium swallow showing corkscrew esophagus.
Management:
- Nitrates or calcium channel blockers to relieve symptoms.

c) Boerhaave Syndrome

History Taking: Severe chest pain following vomiting or retching, associated with subcutaneous emphysema or pneumomediastinum.
Physical Exam: Crepitus in the neck or chest, signs of shock.
Diagnostic Tests:
- Chest X-ray or contrast esophagram showing extravasation of contrast.
Management:
- Emergency surgical repair.
- Broad-spectrum antibiotics.

d) Dyspepsia

History Taking: Indigestion or epigastric discomfort worsened by meals.
Physical Exam: Mild epigastric tenderness.
Diagnostic Tests:
- Upper endoscopy for refractory symptoms.
Management:
- PPIs or H2 blockers.
- Lifestyle modifications (avoiding trigger foods).

e) Peptic Ulcer Perforation

History Taking: Sudden, severe epigastric pain radiating to the chest or back, associated with signs of peritonitis.
Physical Exam: Guarding, rigidity, and rebound tenderness.
Diagnostic Tests:
- Abdominal X-ray showing free air under the diaphragm.
Management:
- Emergency surgical repair and broad-spectrum antibiotics.

f) Pancreatitis

History Taking: Epigastric pain radiating to the back, associated with nausea, vomiting, and history of alcohol use or gallstones.
Physical Exam: Tenderness in the epigastric region, Cullen’s sign, or Grey Turner’s sign in severe cases.
Diagnostic Tests:
- Serum amylase and lipase elevated.
- Abdominal CT for diagnosis.
Management:
- Supportive care with IV fluids, pain control, and bowel rest.

5. Musculoskeletal Causes of Chest Pain

a) Costochondritis

History Taking: Sharp, localized anterior chest pain worsened by movement or palpation.
Physical Exam: Reproducible tenderness at the costosternal junctions.
Diagnostic Tests:
- Clinical diagnosis; imaging unnecessary unless other causes suspected.
Management:
- NSAIDs and rest.

b) Rib Fracture

History Taking: Localized sharp pain after trauma or vigorous coughing.
Physical Exam: Tenderness over the affected rib, possible crepitus.
Diagnostic Tests:
- Chest X-ray to confirm fracture.
Management:
- Pain management with NSAIDs, rib belt for stabilization, and rest.

c) Muscle Spasm

History Taking: Localized chest wall pain following overexertion or awkward movement.
Physical Exam: Tenderness and tightness in the affected muscles.
Diagnostic Tests:
- Clinical diagnosis.
Management:
- NSAIDs, muscle relaxants, and rest.

6. Skin Causes of Chest Pain

Herpes Zoster (Shingles)

History Taking: Burning, unilateral chest pain followed by vesicular rash along a dermatomal distribution.
Physical Exam: Vesicular rash along a dermatome.
Diagnostic Tests:
- Clinical diagnosis.
Management:
- Antiviral therapy (acyclovir) and analgesia.

7. Panic Attack and Anxiety

History Taking: Sudden onset chest pain accompanied by palpitations, dizziness, dyspnea, and fear of dying.
Physical Exam: Normal except for hyperventilation or signs of anxiety.
Diagnostic Tests:
- Diagnosis of exclusion after ruling out cardiac causes.
Management:
- Reassurance, breathing exercises, and sometimes benzodiazepines for acute anxiety.

Conclusion:

A systematic approach to chest pain based on the patient's history, physical examination, diagnostic tests, and appropriate management ensures accurate and timely diagnosis. This structure helps clinicians rule out life-threatening conditions while addressing more benign causes, leading to better patient outcomes.