Respiratory Assessment: Obstructive, Pleural, and Vascular Conditions

• Palpation: Decreased tactile fremitus and decreased chest expansion.
• Percussion: Hyperresonant due to excess air.
• Auscultation: Diminished breath sounds and a characteristically prolonged expiration.

Lung and Pleural Conditions

Conditions involving the lung parenchyma (the tissue itself) or the pleural space (the area surrounding the lungs) present with distinct percussion and auscultation patterns.

Lobar Pneumonia

Pneumonia involves consolidation, where the normally air-filled alveoli become filled with fluid or exudate. Because denser tissue conducts sound better, you will find increased tactile fremitus over the involved lobe.

• Inspection: Increased RR and guarding/lag on the affected side.
• Percussion: Dullness over the consolidated area.
• Auscultation: Loud bronchial sounds (which are normally heard only over the trachea) and fine-to-medium crackles.

Atelectasis

Atelectasis is the collapse of part or all of a lung, often due to airway obstruction. This results in a loss of volume in the affected area.

• Inspection: Cough, increased RR, and increased heart rate (HR); the trachea may shift toward the affected side.
• Palpation: Decreased or absent tactile fremitus.
• Percussion: Dullness.
• Auscultation: Diminished or absent breath sounds.

Pleural Effusion and Pneumothorax

These conditions involve the pleural space rather than the lung tissue itself.

Pleural Effusion is the accumulation of fluid in the pleural cavity. Large effusions can create enough pressure to shift the trachea away from the affected side.

• Findings: Dull or flat percussion, diminished or absent breath sounds, and increased RR.

Pneumothorax occurs when air enters the pleural space, causing lung collapse.

• Findings: Hyperresonant percussion (due to air), decreased or absent tactile fremitus and breath sounds, and unequal lung expansion. In a tension pneumothorax, a medical emergency, the trachea shifts away from the affected side.

Vascular and Cardiac-Related Conditions

Respiratory symptoms are frequently secondary to cardiovascular dysfunction.

Heart Failure

Congestive heart failure can lead to pulmonary edema, where fluid backs up into the lungs. Patients often report orthopnea (shortness of breath when lying flat) and paroxysmal nocturnal dyspnea (PND) (waking up gasping for air).

• Auscultation: Crackles are typically heard at the lung bases.

Pulmonary Embolism (PE)

A PE is a sudden blockage of a pulmonary artery, often by a blood clot. This is a life-threatening condition that requires immediate recognition.

• Presentation: Sudden onset of chest pain, dyspnea, tachypnea, and restlessness.
• Palpation: Tachycardia is a common finding.
• Auscultation: Often remains normal, though crackles or wheezes may occasionally be present.

Exam Tip: When a patient presents with sudden shortness of breath accompanied by chest pain, immediately consider the "red flags" of pneumothorax or pulmonary embolism.

Nursing Considerations

When managing patients with respiratory compromise, nurses must prioritize airway patency and oxygenation. The imbalance between oxygen supply and demand often leads to activity intolerance.

Key nursing diagnoses include:

• Ineffective airway clearance: Related to excessive secretions or obstruction.
• Ineffective breathing pattern: Related to the increased work of breathing or changes in lung mechanics.
• Impaired gas exchange: Related to the inability of the lungs to transfer oxygen and carbon dioxide effectively across the alveolar-capillary membrane.