University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

412

Pages:

2
Author:

Mariam A. A.

PULMONARY EMBOLISM Scuba diving → air quickly pressure changes → air embolus Pregnancy Birth Amniotic cavity opening Fluid leaks Amniotic embolus Clot → amniotic embolus DVT Bed rest Immobilization Surgery Blocked & occluded Distal to occlusion Arteries/arterioles Perfusion Not enough blood to cause O2 diffusion ↓ PaO2 ↓ CO2 → ↑ pH → respiratory alkalosis But does not benefit RV ↓ O2 diffusion ↑ HR Cardiac acceleration Tachypnea Does not improve ↓ O2 diffusion Hypoxemia due to Ventilation not enough blood to ↓ alveolar arterial gradient Dyspnea Cardiac chemoreceptors Central receptors ↓ PaO2 Image Analysis: Pulmonary Embolism Textual Content: Pleuritic chest pain Pain upon breathing SVC Blood backs into RA RV overload ↓ diameter↑ afterload↓ RV output JVD output Pulmonary Vasoconstriction ↓ O2 supply Bronchial blood supply ↓ pulmonary blood supply InflammationAlveolar capillary membrane Blood leak into alveoli Cough with blood Hemoptysis RV overload ↑ demand on RV ↓ pulmonary circulation ↑ JVD ↓ CO Cyanosis Dyspnea Tachypnea Medulla ↑ RR ↓ PaCO2 ↓ H+ ↓ ventilation ↓ CO2 Respiratory alkalosis vasoconstrictor ↓ O2 UR S & S of hypoxemia