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NUR 213 Shock
- What is shock?
Answer Inadequate perfusion to meet the oxygenation and metabolic demands of the body.
- what is hemodynamics?
Answer the study of blood moving through the circulatory system.
- Non invasive hemodynamic monitoring is?
Answer Blood Pressure 120/80. Capillary refill within 2 seconds.Pulse rate and Quality 60-100. Urine output 30 ml/hr Mentation-A&O neuro status.Skin temperature/ Color warm, normal color for ethnicity.
- What happens to capp refill when our blood flow is decreased?
Answer It will be more than 2 seconds.
- Calculation for MAP?
Answer
- x diastolic, + systolic, then divide by 3.
- what MAP needed to profuse coronary arteries, brain, kidneys.
Answer 60.
- What is the normal range of MAP?
Answer
70-110
- What does it mean if the MAP is higher than 110?
Answer They are hypertensive.
- define cardiac output [CO].
Answer the amount of blood ejected from the ventricle in 1 minute
- Cardica output calculation is? 1 / 3
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What is the normal range?
Answer HR x SV -Normal range
Answer 4-8 L/min
- Define cardiac index [CI].
Answer cardiac output adjusted for the patient's body sur- face area.-More specific to individuals -need CO to get CI.
- Define stroke Volume.
What is the normal range?
Answer Stroke volume is the amount of blood ejected from the ventricle with each heartbeat.60-100 mL/beat.
- What is the calculation for CI?
What is the normal range?
Answer -CO/ BSA [body surface area}.-Normal range
Answer 2.5-4 L/min/m2
- image of prelaod and afterload.
Answer
- Define preload [volume].
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Answer the volume of blood in the ventricle at the end of diastole or right before systole-how much is in my ventricle before it ejects
- within preload, there are 2 ways to measure pressure, what are they and what do they
measure?
Answer CVP [central venous pressure] aka right atrial pressure [RAP]-measure right side-venous return comes to the right side of the heart.PAWP [pulmonary artery wedge pressure] AKA pulmonary capillary wedge pressure [PCWP], or left ventricle end diastolic pressure [LVEDP] -measure left side With these, we use a pulmonary artery catheter, aka swan ganz catheter.
- What 3 parts make up stroke volume?
Answer Preload [volume]. Afterload [resistence].Contractility [squeeze of the heart].
- What is central venous pressure monitoring?
What is normal range of preload?
Answer Central line normally through internal jugular or femoral vein, sits right outside the right atrium and measures preload.2-6 mmHg
- What abnormalities cause an increase in preload?
Answer Hypervolemia. regurgitation of cardiac valves.heart failure.
- How can we manipulate preload [volume]?
Answer Fluids will increase preload aka increases volume.Diuretics will decrease preload aka decreasing volume.
- what is afterload [resistence]?
Answer Afterload is the pressure or resistance the ventricle must overcome to eject blood [systole].
- Afterload of the LEFT ventricle is measured as?
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