Pneumo

Specific types of pneumonia include lobar pneumonia and bronchopneumonia. Lobar pneumonia involves an infection in one or more lobes, often caused by Streptococcus pneumoniae, and may lead to pleural empyema, which is a collection of pus in the pleural cavity. It presents with sudden onset, rales, and rusty-colored sputum caused by exudate. Bronchopneumonia refers to a diffuse infection in both lungs caused by several different microorganisms, presenting with yellow or green sputum and a productive cough.

Critical Complications of Respiratory Infections

Pleural effusion occurs when fluid fills the pleural space between the lung and the chest wall, preventing full lung expansion and decreasing gas exchange. Key signs include chest pain during inhalation, dyspnea, diminished breath sounds, and dull resonance on percussion due to fluid-filled lungs. The priority intervention is thoracentesis, where a large needle is inserted into the lung space to drain fluid. Serious complications of this procedure include pneumothorax, or a popped lung, and hemothorax, which is blood in the lung space. It is a priority to report asymmetrical chest expansion and decreased breath sounds.

Acute Respiratory Distress Syndrome ($ARDS$) is characterized by hard, stiff lungs and refractory hypoxemia, meaning the low $PaO_{2}$ is resistant to oxygen therapy. The primary sign of low oxygen is an altered mental status, manifested as confusion, agitation, or restlessness. Septic shock occurs when a severe infection triggers the release of chemicals into the bloodstream, causing total body inflammation and severely low blood pressure. This can lead to Multiple Organ Dysfunction Syndrome ($MODS$). Signs of septic shock include a systolic blood pressure less than $90\,mm\,Hg$, a Mean Arterial Pressure ($MAP$) less than $65\,mm\,Hg$, capillary refill over $3 - 4$ seconds, tachycardia, and fever over $100.4^{\circ}F$ or late-stage hypothermia under $96.8^{\circ}F$. Kidney distress is indicated if urine output is $30\,ml/hr$ or less.