Mechanical Ventilation. Dr Aidah Abu Elsoud Alkaissi An-Najah National University Faculty of Nursing. Principles of Mechanical Ventilation.
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Dr Aidah Abu Elsoud Alkaissi
An-Najah National University
Faculty of Nursing
Emerson iron lung exemplifying design dating back to the 1930s. Patient's head protrudes through neck collar on left, and electric motor beneath the tank generates negative pressure via the leather bellows on the right. The device weighs 300 kg.
medullary respiratory center: ventilator is triggered and delivers the mechanical breath, but it continues to contract throughout inspiration. Is composed of several groups of neurons located bilaterally in the medulla oblongata and pons
A tension pneumothorax is a large pneumothorax with shifting of the mediastinal structures away from the side of the pneumothorax. Tension pneumothorax: Immediate correction can be accomplished with needle decompression. Place a 14-gauge angiocatheter into the 2nd intercostal space at the midclavicular line. This should convert a tension pneumothorax to a simple pneumothorax
Signs and Symptoms of the mediastinal structures away from the side of the pneumothorax.
of Tension Pneumothorax
■ Midline tracheal shift
■ Muffled heart tones
■ Absent breath sounds over affected lung
■ Hyperresonance الرنينto percussion over affected lung
■ Elevation in peak airway pressures in ventilated patients
■ Decrease in saturation of oxygen in arterial blood
(SaO2) or arterial oxygen tension (PaO2)
■ Cardiac arrest
Side Effects of Clinical Starvation of the mediastinal structures away from the side of the pneumothorax.
■ Atrophy of respiratory muscles
■ Decreased protein
■ Decreased albumin
■ Decreased cell-mediated immunity
■ Decreased surfactant production
■ Decreased replication of respiratory epithelium
■ Intracellular depletion of adenosine triphosphate (ATP)
■ Impaired cellular oxygenation
■ Central respiratory depression
ATP coenzyme used as an energy carrier ...