Free Essays on Aeration Function

Aeration Function Respiration: The mov’t of gases to provide E (O2) & eliminate waste products (CO2). 4 Stages of Ventilation: 1. Ventilation – mov’t of O2 in & CO2 out of the alveoli. 2.Ex of gases across the alv – cap membrane (O2 to pul cap & CO2 t o alv). 3. Transport of gases in the blood. 4.Ex of gases at the tissue level. Alv are considered gas ex areas & everything above the alv are ventilated only. Pul artery carried de O2 blood back to the cap which encloses the alv & hbg becomes O2, the pul vein carries O2 Hgb to the L.A. & then pumps it out to the rest of the body. Lymph sys is imp with ARDS B/c it cleans up excess debris & fluid in the interstitial spaces. CHF there is a back up of blood P in the pulvein so fluid travels into interstitial spaces, usually the lymph system carries it away, but it becomes too much, seeping into alv causing pul edema. Tidal Volume: VT =amt of air exhaled after a N inhal N= 7-9 cc/kg Ie. 70 kg man (7-9 cc/kg ) = 490-630 cc This calc N tidal vol, but problems arise when vent is obs, pt must RR to move same vol = min vent. Minute Ventilation: VE= Total vol of air that vent lungs in 1 min N = 5000-10000cc/min or 5-10 L/min Ie. VE= VT(RR) VT= 500 RR=15 VE =500x15= 7500 7.5 L/min in total vol impacts pt more than in RR. 1. MECHANICAL PROCESS: A).Muscles of ventilation: Diaphragm – flattens & pulls down on inhal Ext intercoastals: pull ribs out & up Inhal is an active process req E / WOB Accessory muscles: SCM, scalene assist with forced inhal Expiration= N passive process not req E. If using abd & internal intercostals = E & WOB for forced exhale. B).LUNG THORAX R/L: Plural layer surrounds lungs, it has 2 layers, Parietal plura attaches lung to chest wall & diaphragm at main stem bronci it folds & becomes viseral plura layer. The 2 layers pu... Free Essays on Aeration Function Free Essays on Aeration Function Aeration Function Respiration: The mov’t of gases to provide E (O2) & eliminate waste products (CO2). 4 Stages of Ventilation: 1. Ventilation – mov’t of O2 in & CO2 out of the alveoli. 2. Ex of gases across the alv – cap membrane (O2 to pul cap & CO2 t o alv). 3. Transport of gases in the blood. 4. Ex of gases at the tissue level. Alv are considered gas ex areas & everything above the alv are ventilated only. Pul artery carried de O2 blood back to the cap which encloses the alv & hbg becomes O2, the pul vein carries O2 Hgb to the L.A. & then pumps it out to the rest of the body. Lymph sys is imp with ARDS B/c it cleans up excess debris & fluid in the interstitial spaces. CHF there is a back up of blood P in the pulvein so fluid travels into interstitial spaces, usually the lymph system carries it away, but it becomes too much, seeping into alv causing pul edema. Tidal Volume: VT =amt of air exhaled after a N inhal N= 7-9 cc/kg Ie. 70 kg man (7-9 cc/kg ) = 490-630 cc This calc N tidal vol, but problems arise when vent is obs, pt must RR to move same vol = min vent. Minute Ventilation: VE= Total vol of air that vent lungs in 1 min N = 5000-10000cc/min or 5-10 L/min Ie. VE= VT(RR) VT= 500 RR=15 VE =500x15= 7500 7.5 L/min in total vol impacts pt more than in RR. 1. MECHANICAL PROCESS: A). Muscles of ventilation: Diaphragm – flattens & pulls down on inhal Ext intercoastals: pull ribs out & up Inhal is an active process req E / WOB Accessory muscles: SCM, scalene assist with forced inhal Expiration= N passive process not req E. If using abd & internal intercostals = E & WOB for forced exhale. B). LUNG THORAX R/L: Plural layer surrounds lungs, it has 2 layers, Parietal plura attaches lung to chest wall & diaphragm at main stem bronci it folds & becomes viseral plura layer. The 2 layers pu...