NSG 4100 EXAM 3
What are signs/symptoms of ITP?
Petechiae on extremities
How do we dx ITP?
Bone marrow aspiration reveals megakaryocytes
What is the patho of ITP?
Antiplatelet antibodies develop in the blood and bind to the pts platelets > ingested
and destroyed by RES or macrophages > body attempts to compensate for this
destruction by increasing platelet production within the marrow
What are nursing considerations for ITP?
Careful medical hx
+ STOP quinine and sulfa drugs
+ assess for recent hep C, H. pylori, and HIV
,When is tx initiated for ITP?
When bleeding becomes severe or life-threatening or platelets <30
What is systole?
When the heart contracts to pump blood out (depolarization)
What is diastole?
When the heart relaxes after contractions (depolarization)
What is stroke volume (SV)?
Volume of blood ejected during ventricular contraction
What is cardiac output (CO)?
HR x SV
- amt of blood the heart pumps from each ventricle per minute
- measured in L per min
,What is normal EF of the left ventricle?
55-65%
What is preload?
- amount of ventricular stretch at the end of diastole
- initial stretching of the ventricles prior to contraction
- the heart loading up for the next big squeeze of the ventricles during systole
What is afterload (systemic vascular resistance [SVR])?
Amount of resistance the heart must overcome to open the aortic valve and push the
blood volume out into the systemic circulation
Pre-load is the amount of blood in the _______________ at the end of ________. This is
reflected as the central venous pressure.
right ventricle
diastole
PRESSURE MONITORING SYSTEM: the pressure bag is maintained at 500mmHg.
True/False?
False. It's maintained at 300mmHg
, PRESSURE MONITORING SYSTEM: NS is used as the flush system solution.
True/False?
True
PRESSURE MONITORING SYSTEM: the transducer does not convert the pressure
into an electrical signal; it uses osmosis. True / False?
False. It does convert the pressure into an electrical signal
What would NOT be a cause of sinus bradycardia?
Amphetamines
The effects of hypokalemia include the following:
- sinus brady
- premature vent tachycardias
- vent fib
Your pt converts to ventricular fibrillation and is non-responsive. What is your
PRIORITY action?
What are signs/symptoms of ITP?
Petechiae on extremities
How do we dx ITP?
Bone marrow aspiration reveals megakaryocytes
What is the patho of ITP?
Antiplatelet antibodies develop in the blood and bind to the pts platelets > ingested
and destroyed by RES or macrophages > body attempts to compensate for this
destruction by increasing platelet production within the marrow
What are nursing considerations for ITP?
Careful medical hx
+ STOP quinine and sulfa drugs
+ assess for recent hep C, H. pylori, and HIV
,When is tx initiated for ITP?
When bleeding becomes severe or life-threatening or platelets <30
What is systole?
When the heart contracts to pump blood out (depolarization)
What is diastole?
When the heart relaxes after contractions (depolarization)
What is stroke volume (SV)?
Volume of blood ejected during ventricular contraction
What is cardiac output (CO)?
HR x SV
- amt of blood the heart pumps from each ventricle per minute
- measured in L per min
,What is normal EF of the left ventricle?
55-65%
What is preload?
- amount of ventricular stretch at the end of diastole
- initial stretching of the ventricles prior to contraction
- the heart loading up for the next big squeeze of the ventricles during systole
What is afterload (systemic vascular resistance [SVR])?
Amount of resistance the heart must overcome to open the aortic valve and push the
blood volume out into the systemic circulation
Pre-load is the amount of blood in the _______________ at the end of ________. This is
reflected as the central venous pressure.
right ventricle
diastole
PRESSURE MONITORING SYSTEM: the pressure bag is maintained at 500mmHg.
True/False?
False. It's maintained at 300mmHg
, PRESSURE MONITORING SYSTEM: NS is used as the flush system solution.
True/False?
True
PRESSURE MONITORING SYSTEM: the transducer does not convert the pressure
into an electrical signal; it uses osmosis. True / False?
False. It does convert the pressure into an electrical signal
What would NOT be a cause of sinus bradycardia?
Amphetamines
The effects of hypokalemia include the following:
- sinus brady
- premature vent tachycardias
- vent fib
Your pt converts to ventricular fibrillation and is non-responsive. What is your
PRIORITY action?
