6/1/2023 0 Comments Average human breathing zone![]() It is also there to reduce the effort the patient’s body may have to make to respire. The purpose of mechanical ventilation is to continue the gas exchange between the lungs and the air in order for the patient to be able to obtain oxygen. This form of ventilation helps the patient to breathe, some even considering that the machine “breathes for” the patient. This can occur when a patient is put into a medically induced coma or if they are having serious respiratory issues. This is the medical definition of mechanical ventilation. This ventilation refers to the process by which the gas exchange between the lungs and the air occurs through the assistance of an external device that is connected to the patient. Sometimes people need assistance with ventilation. ![]() The diaphragm relaxes and the tissue elastic recoils, causing a decrease in the thoracic volume and an increase in intralveolar pressure during expiration. This is what completes the breathing cycle and releases air from the lungs. The process by which air is let out of the lungs is called exhalation or expiration. In order for this to occur, it must also simultaneously decrease the pressure in the alveoli so that air can flow smoothly into the lungs. When the diaphragm contracts and the volume in the thoracic cavity increases, inspiration takes place. It occurs when the muscles of the respiratory system contract, which occurs in the active phase of ventilation. Inspiration brings air into the lungs and allows gas exchange to occur. The process by which air is taken into the lungs is known as inhalationor inspiration. The intrapleural, atmospheric, and interalveolar (intrapulmonary) pressures are the three types of pressures that are involved in pulmonary ventilation. The pressure within the alveoli of the lungs is called interalveolar pressure. The pressure of the air outside of the body is atmospheric pressure. The pressure that is present within the pleural cavity of the body is called intrapleural pressure. There are three pressures that help pulmonary ventilation to occur. Together, these processes result in pulmonary ventilation. The constant change in pressure is caused by the breathing movements as well as the recoil of elastic tissues. ![]() This is because like all gases, air flows from areas of high pressure to areas of low pressure. The pressure differences in the lungs versus the atmosphere allow air to easily flow in and out. Throughout this process, the air is continuously inhaled (taken into) and exhaled (released from) the lungs. Normally known as breathing, pulmonary respiration is known as the process of gas exchange between the lungs and the atmosphere. These deal with the natural ventilation that occurs when an organism functions as usual or with assisted ventilation when an organism needs help with the process of ventilation. The two main types of ventilation are pulmonary ventilation and mechanical ventilation.
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