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Comp Final Resp Care

Venticlation is cyclic: Inspiration & Expiration Tidal Volume:normal breathingFacilitates removal of co2 replenishes o2
Transrespiratory-atmosphere to alveoliTranspulmonary-alveoli to pleuraTransthoracic-pleura to body surface Gradient-High to low. Bigger the gradient the easier to breath.HGB-70% 1.34 mL 30% dissolve plasma
Compliance is the lungs ability to stretch. Surfactant keep alveoli opened and stablilized. Type II pneumocytes produce surfactant. Production around 28 wks of birth.
.2 is normal compliance. The higher the pressure, the lower the compliance. Normal Tidal Volume is 300mL
RAW is airway resistance. Nose has the most airway resistance. Normal range is 0.5-2.5 cm H2O/L/sec Support comes from cartilage, and "traction" from surrounding tissues.
WOB is how much effort it takes to breath. Emphysema-compliance goes down, elasticity goes up.COPD-Compliance goes up, elasticity goes down.
More than 5% use of breathing means respiratory distress. 4 Life Functions: Ventilation, Oxygenation, Circulation, Perfusion
V/Q Match-Better blood flow at bottom of lungs b/c of gravity. Hyperventilation- PaCO2 <35mm HgHypoventilation- PaCO2 > 45mm Hg
The apex of the heart lies just above the diaphragm at a level corresponding to the fifth intercostal space. The loose membranous sac that encloses the heart is called the pericardium.
Tissues that make up the heart wall include the endo, epi, and myocardium. Most of the hearts muscle mass is located in the left ventricle.
The mitral valve prevents atrial backflow during ventricular contraction. Narrowing of the mitral valve can result in increased pulmonary congestion.
The smeilunar valves seperate the ventricles from their arterial outflow tracts. The coronary arteries are the first arteries to branch off the ascending aorta.
The major branches of the left coronary artery are the anterior descending and the circumflex. Normal Flow of blood in heart: RA, Tricuspid valve, RV, pulm. valve, pulmonary artery, pulmonary veins, LA, mitral valve, LV, aortic valve
Arterioles in the body act like faucets, controlling the flow of blood into the cappillary beds. Sympathetic venometer tone, cardiac suction, and skeletal muscle contraction all facilitate venous return to the heart.
Pulmonary vascular bed is referred to as a low pressure, low resistance system. Normal resting cardiac output is 5000 mL/min
When all 3 are high or low- you interpret dx system by PH & Bicarb. Steps to Dtermine ABG's:1) Acidic or Alkalitic2)Resp or Metab.(Dx System & PH)3)If CO2 & HCO3 abnormal (Compensated)4)If compensated (PH Normal-Fully) (PH Abnormal-Partially)
ABG's are drawn from Arterial Blood. Normal ABG Levels:PH 7.35-7.45, PaCO2 35-45, HCO3(Bicarb) 22-24, PaO2- 80-100, SaO
Respiratory: PaCO2 increases PH decreases or vice versa- Inverse RelationshipMetabolic_HCO3 increases PH increases or vice versa-Direct relationship. Acidic Neutral Base 1 7 14
Respiratory System controls CO2Example: Not breathing-, CO2 high Fast Breathing-< CO2 Low Renal System controls bicarbonateExample= PH = 7.30 low PaCO2= 45 Normal Metabolic HCO3= 19 Low Acidosis
Anything(PaCO2) less than 80 you have a big decrease in saturation. PH, Body Temp, and 2,3 DPG makes curve shift left or right. 2,3 DPG stablizes red blood cells.
PH increases curve shifts Lft.PH decreases curve shifts Rt.Blinker System:Body Temp increases curve shifts rtBody Temp decreases curve shifts lft2,3 DPG increases curve shifts rt2,3 DPG decreases curve shifts lft. If CO2 is high PH Low. PH is low if it shifts right which makes o2 sats low.
Apex is where the heart beats the strongest. Left Anterior Descending( LAD)= Widow Maker
Blockage of blood flow thru the coronary arteries is called a myocardial infarction. Veins, arteries and nerves usually travel together.
Heart beat is rhythmic and regular. 60-100 beats per minute. SA Node signals heart on how fast, h9ow hard and how often to beat.
Lub Dubb- noise valves make when they are closing. Ateries carry blood away from the heart. Veins carry blood to the heart. Capillariescarry blood from arterioles to venules.
Factors that influence blood pressure:Blood VolumeStrength of contractionsBlood ViscosityResistance to blood flow Normal BP 120/80
Created by: crystal71653