[M2] Capillary Fragility Test Flashcards
Capillary Fragility Test is also called as ________
tourniquet test
_____ is a clinical diagnostic method used to assess the fragility of the capillary walls.
Capillary Fragility
Capillary Fragility test is a clinical diagnostic method used to assess the fragility of the _____________
capillary walls.
The capillary fragility test measures platelet’s ability to maintain __________
capillary integrity.
The degree of _______ will correlate with the test, as with the ______________.
thrombocytopenia
bleeding time
In normal patients, ___________ petechiae are formed during this test.
none to very few
A positive test will be found in:
Thrombocytopenia
↓ fibrinogen
Vascular purpura
The capillary or __________ can be done using the following methods:
resistance test
- Rumpel-Leede/Hess test positive pressure technique/Tourniquet test
- Suction Cup/ Petechiometer Method/ Negative Pressure Technique
TOURNIQUET TEST
Principle
Appearance of few ______ after the test indicates a (positive/negative) test which indicates weakness of the ________ or ________________ and __________.
petechiae
positive
capillary walls
capillary permeability and fragility
Materials used in Tourniquet test
Sphygmomanometer
Timer
PROCEDURE
- Mark a definite area (_____ in a diameter) on the _______. The upper edge which is _____ ____ the bend of the ____.
5cm
forearm
4cm
below
elbow.
Procedure
- Count the ______ (a minute, rounded spot of _______ on the skin) already present in this area
petechiae
hemorrhage
Procedure
- Place a blood pressure cuff on the arm and raise the pressure to _______ of mercury and leave it for ___________.
80 mmHg
8 minutes.
Procedure
- Remove the cuff, and after _________, count the number of petechiae in the __________.
5 minutes
marked area
Procedure
- Normally, there should be no more than ____ at most, ____ petechiae
10
20
Manner of reporting
Grade 1+ petechiae
1-10
Manner of reporting
Grade 2+ petechiae
11-20
Manner of reporting
Grade 3+ petechiae
21-50
Manner of reporting
Grade 3+ petechiae
21-50
Manner of reporting
Grade 4+ petechiae
50 and above
Reference range for Tourniquet test
1-10 petechiae
What is the other method for Capillary Fragility Test
SUCTION CUP TECHNIQUE
SUCTION CUP TECHNIQUE
Principle:
Employs the use of a _________. The cup is applied to the (outer/inner) surface of the arm for a period of ______ at ________ and the ________ of the capillaries is expressed as the (positive/negative) pressure required to produce a __________________.
suction cup
outer
one minute
200 mmHg
resistance
negative
macroscopic petechiae
Normal value in Suction Cup Technique
<4 Petechiae
