Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Hematology > Lab evaluation of hemostasis > Flashcards

Lab evaluation of hemostasis Flashcards

1
Q

Which blood tube is platelet count taken from?

A

Lavender top

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What might a high platelet count mean?

A 
Acute phase reaction
Early CML
Essential thrombocytosis
Polycythemia vera
Post-splenectomy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What might a low platelet count mean?

A 
DIC
Hemolytic anemia
Hypersplenism
ITP
Leukemia
Prosthetic heart valve
Recent transfusion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Bleeding time

A

Measures how well platelets interact with blood vessel walls to form clots.
Used to dx vWD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Bleeding time procedure

A

make 5mm x 1mm deep puncture
blot q 30 seconds until clot
avoid aspirin 2 weeks prior
Normal is 3 - 8 mins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What might a high bleeding time mean?

A 
platelet dysfxn
DIC
Leukemia
Liver disease
thrombocytopenia
vWD
Vasculitis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Prothrombin Time (PT)

A

Measures vitamin K dependent clotting ability and extrinsic pathway.
Used to screen for bleeding disorders
used to monitor patients on warfarin
INR normalizes results

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

PT collection

A

Light blue top
Fill completely
correct ratio of blood to citrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Normal PT

A

PTT: Adults: 11 - 13 seconds
INR: < 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what might a high PT mean?

A 
anti-phospholipid antibody syndrome
DIC
Liver disease
Vitamin K deficiency
Factor II, V, VII or X deficiency.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what does activated partial PT measure?

A

Intrinsic pathway

VIII, IX, XI and XII

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What might high PTT mean?

A 
hemophilia
DIC
liver disease
Vitamin K deficiency
Heparin therapy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Thrombin Time

A

Measure of the fibrinolytic pathway
Rate of conversion of fibrinogen to fibrin.
Normal is 15 - 20 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what might a high thrombin time mean?

A 
DIC
Liver disease
dysfibrinogenemia
paraproteinemia
Uremia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what might Low thrombin time mean?

A

erythrocytosis

dysfibrinogenemia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Clinical signs of platelet deficiency

A 
Gum bleeding
Epistaxis
Petechiae
Prolonged bleeding from minor cuts
Abnormal bleeding time
Normal PT/PTT
17
Q

Clinical signs of factor deficiencies

A 
Hemarthrosis
Delayed bleeding
Post-op hemorrhage
Muscle hematoma
Normal bleeding time
Abnormal PTT

Hematology (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions