gas exchange

What are the primary risk factors for Chronic Obstructive Pulmonary Disease (COPD)?

Smoking, dust and chemical exposure, combat exposure, secondhand smoke exposure, Alpha 1 antitrypsin deficiency, familial history of chronic reactive airway diseases.

What are the risk factors related to impaired perfusion caused by Pulmonary Embolism (PE)?

Long-term immobility, plane rides, being in a cast or an accident, COPD or chronic pulmonary disease, heart failure, Atrial Fibrillation.

List some causes of Iron Deficiency Anemia.

Inadequate intake of iron, women with excessive menstrual bleeding, pregnant women, the elderly, children weaned from breast milk, teens growing quickly, chronic slow GI bleeding, malabsorption disorders, trauma or surgery causing blood loss, cancers.

What is the primary function of hemoglobin in the body?

To combine with oxygen in the lungs and release it to peripheral tissues.

What are the acute clinical manifestations of compromised gas exchange in the case of Pulmonary Embolism?

Dyspnea, chest pain, tachycardia, air hunger, a feeling of impending doom.

How does Chronic Bronchitis impair ventilation?

Chronic inhalation of irritants leads to hypersecretion of mucus, causing obstruction to inspiratory airflow and leading to ventilation imbalances.

What physiological changes occur in Emphysema that affect gas exchange?

Destruction of elastic fibers, loss of elastic recoil, irreversible enlargement of air spaces, and obstruction of expiratory airflow.

In case of COPD, what caution should be taken regarding oxygen therapy?

Do not provide high levels of oxygen as it can decrease the respiratory drive in patients who are low O2 driven.

What is a pulmonary embolus and how does it relate to impaired gas exchange?

A pulmonary embolus is an occlusion in the pulmonary arterial bed which causes impaired perfusion and thus disrupts gas exchange.

What are some signs related to severe oxygen deprivation or respiratory distress seen during a COPD exacerbation?

Shortness of breath, cyanosis, use of accessory muscles to breathe, low O2 saturation on pulse oximetry.

How do Chronic Bronchitis and Emphysema differ in their primary pathological effects on the lungs?

Chronic Bronchitis primarily involves inflammation and mucus hypersecretion in the airways, leading to airflow obstruction. Emphysema primarily involves the destruction of alveolar walls and elastic fibers, leading to enlarged air spaces and loss of elastic recoil.

What are the common clinical manifestations of Iron Deficiency Anemia?

Fatigue, pallor, dyspnea on exertion, pica, restless legs syndrome, brittle nails, glossitis, cheilitis, and cold intolerance.

What is the overall process of gas exchange in the body?

Gas exchange involves the uptake of oxygen into the blood and the removal of carbon dioxide from the blood, occurring primarily between the alveoli and pulmonary capillaries in the lungs, and between systemic capillaries and tissues throughout the body.