Pneumothorax

Tension Pneumothorax Simplified

A tension pneumothorax is a dangerous condition where air builds up in the space around the lung, causing it to collapse. This can also shift organs in the chest.

  • Air gets trapped and can't escape, leading to lung collapse and organ shift.

  • This shift affects heart and lung function.

Signs and Symptoms

  • Trachea (windpipe) deviates away from the affected lung.

  • Low blood oxygen.

  • Increased pressure affects the heart.

  • Reduced blood flow to the heart, causing instability.

  • Can lead to acidosis and decreased heart output, which can be fatal.

Causes

Tension pneumothorax shares the same causes as a regular pneumothorax:

  • Trauma (e.g., rib fracture, injuries).

  • Medical procedures (e.g., pacemaker insertion, lung biopsy, ventilation).

  • Scuba diving (lung damage from pressure changes).

Risk Factors

  • Complications from medical procedures.

  • Central line placement.

  • Mechanical ventilation (high oxygen volumes).

  • Other procedures: lung biopsy, tracheostomy, bronchoscopy, etc.

Epidemiology

  • High morbidity rate with medical-related tension pneumothorax.

  • Spontaneous cases: Tension pneumothorax occurs in 1-2% of cases.

  • Trauma: About 20% of trauma patients develop a pneumothorax.

  • Severe chest trauma: 50% develop a pneumothorax.

Impact on Health

Needs immediate treatment to prevent low oxygen and heart/lung issues, which can lead to death. Treatment costs can be a burden.

Clinical Presentation

  • Unstable blood flow due to organ shift and heart pressure.

  • Increased heart rate and decreased blood pressure.

  • Neck vein distention may indicate heart issues.

  • Breathing difficulties, possibly cyanosis.

  • Sharp chest pain radiating to the back or shoulder.

  • Severe cases: respiratory or cardiac arrest.

  • Air under the skin.

Diagnosis

  • Often based on symptoms.

  • Imaging depends on stability: unstable = no imaging.

  • Use ultrasound, chest X-ray, or CT scan.

  • Labs: blood tests, cardiac enzymes, ABGs, and ECG to check for imbalances and heart issues.

ABG Analysis

  • Measures oxygen and ventilation.

  • Checks blood acid-base and gas pressures.

  • pH: 7.35-7.45 (acidosis or alkalosis).

  • PaO2PaO_2: 75-100 mmHg (oxygen pressure).

  • PaCO2PaCO_2: 35-45 mmHg (ventilation marker).

  • HCO3HCO_3: 22-26 mEq/L (bicarbonate, renal involvement).

Interpretation of ABG Results

  • Compensated: pH normal, one of PaCO2PaCO_2 or HCO3HCO_3 abnormal.

  • Uncompensated: pH abnormal, one of PaCO2PaCO_2 or HCO3HCO_3 abnormal.

  • Partially Compensated: pH abnormal, both PaCO2PaCO_2 and HCO3HCO_3 abnormal.

Nurse's Role

  • Assess airway, breathing, and circulation.

  • Assist with airway placement.

  • Give 100% oxygen.

  • Assist with needle decompression or chest tube placement.

  • Monitor chest tube system.

  • Help with imaging once stable.

Client Education