BioConst — Lung

Research reference only. BioConst updates and corrects content over time, but it cannot replace clinician-guided diagnosis, treatment, medication, or testing decisions.

Lung

Lung pages connect breathing terms to airway, oxygenation, imaging, and clinical-boundary variables.

Medical Wiki

Airflow, gas exchange, and infection

Airflow and airway inflammation

Conditions where airways narrow, inflame, or obstruct airflow.

Asthma and airway inflammationAsthma and airway inflammationAsthma is a chronic airway condition where inflammation and narrowing make airflow harder at times.

Airway inflammationAirflow obstructionSpirometryOxygen saturation

COPDCOPD and airflow obstructionCOPD involves lung or airway damage that blocks airflow and makes breathing harder over time.

Airflow obstructionFEV1/FVC contextSpirometryOxygen saturationLung gas exchange

Infection and lung-tissue inflammation

Conditions where infection fills or inflames air spaces and changes breathing context.

Pneumonia and air-sac infectionPneumonia and air-sac infectionPneumonia is infection in one or both lungs where air sacs can fill with fluid or pus.

Lung infection contextAlveoli / air sacsOxygen saturationChest imaging in lung contextComplete blood count (CBC)

Scarring, sleep breathing, and blood flow

Scarring and restrictive lung context

Conditions where stiff or scarred lung tissue limits breathing and gas transfer.

Pulmonary fibrosis and lung scarringPulmonary fibrosis and lung scarringPulmonary fibrosis makes lung tissue thick, stiff, or scarred, which can make gas transfer harder.

Pulmonary fibrosis scarLung diffusion capacityLung gas exchangeChest imaging in lung contextOxygen saturation

Sleep breathing and pulmonary blood flow

Conditions where breathing rhythm during sleep or blocked lung blood flow changes oxygen context.

PEPulmonary embolism and lung blood-flow blockagePulmonary embolism is a blood-flow blockage in the lung and belongs in urgent clinical context.

Pulmonary blood flowOxygen saturationArterial blood gas (ABG)D-dimerChest imaging in lung context

Sleep apnea and breathing interruptionSleep apnea and breathing interruptionSleep apnea is repeated breathing pause or shallow breathing during sleep that changes oxygen and sleep context.

Sleep breathing interruptionOxygen saturationLung gas exchangeVascular risk and brain health