Edema Pressure - Notes collaborated from lecture PDF

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Notes collaborated from lecture...

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1.

What is osmotic pressure? What is the role of osmotic pressure within a vessel? Osmotic pressure is water moving from its area of high concentration to an area of low concentration. If there are too many particles in the plasma, water will be sucked into the blood vessels, causing the blood pressure to elevate.

2. Circle which is correct (higher vs. lower): Hydrostatic pressure in the arterials is higher/lower

Hydrostatic pressure in the veins is higher/lower 

3. Name factors that increase hydrostatic pressure: 1. Venous obstruction 2. Salt or water retention: Increase hydrostatic pressure on the venous side of capillary bed congestive heart failure, reversal of normal body movement. Holding on to water, then salt

4. Describe colloidal pressure:

The pulling pressure created by presence of evenly dispersed particles like plasma proteins that cannot pass through pores of the capillary membrane. You start to get fluids leaking back in because they are too big to move out. Too much get edema do to high colloidal pressure

5. Edema table What is edema?

Accumulation of fluid in extracellular space. Increase in interstitial volume (space around cells of tissue) Fluid is moving backwards.

4 physiologic mechanisms

•Increase capillary filtration pressure •Decrease colloidal filtration pressure •May be Obstruction in lymph flow •Increase capillary permeability

Effects on body function

•Cause edema where ever it is happening •Initial see in feet is indicative of something worse •Lungs heart •Acute life threatening event •Increase amount of time for meds to get somewhere

Methods to use/ what to look for when assessing for edema

● ● ● ●

• 1+ barely there •2+ Significantly present •3+ Very significant •4+ 1.5-2.0 times normal size

•Daily weight (1L of water weighs 1 kg. or 2.2 pounds) best way •Visual assessment •Measurement of the affected part •Application of finger pressure to assess for pitting edema

Types of edema

● Brawny edema: type of nonpitting edema in which the skin thickens and hardened. ○ Common in diabetics ● Jugular Vein Distension Result of increased vascular volume. ○

Edema is common in conditions such as congestive heart failure that produce fluid retention and venous congestion. ○ Edema resulting from increased capillary pressure commonly causes fluid to accumulate in the dependent parts of the body ○ Dependent edema ○...