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Foundations > Catheter basics > Flashcards

Catheter basics Flashcards

1
Q

3 types of steering and handles

A

Fixed handle

Uni directional

Bidirectional

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2
Q

Fixed handle

A

1 curve

Cannot be changed

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3
Q

Unidirectional

A

Able to deflect in only 1 direction

Common curves:
D, F, J

Plunger handle

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4
Q

Bidirectional

A

Able to deflect in 2 directions

Common curves:
D/F. F/J

EZ steer handle

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5
Q

Fixed handle (cont) curves

A

A curve, josephson
Small curve for small areas
HRA, RVA

D curve, domato
Large curve suited for ventricles

F curve
Cournand
Longer curve for HIS

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6
Q

Outer/inner polyurethane coating

A

Determines

Pushability
Torque
Flexibility

It is:
Biocompatible 
Tear resistant 
Flexible 
Abrasion resistant 
Strong
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7
Q

Stainless steel wire braiding

A

32 double wire braiding in the shaft

Unique to BWI (others use 16)

Provides superior handling and control
Precise 1 to 1 torqueability
Stability

16 single wire braiding in the tip

Improved tissue contact
Less chance of trauma
Excellent tip stability
Helps keep electrode on spot while applying energy

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8
Q

Lead wire

A

of lead wires correlates to the # of electrodes the cath has

Carries electrical info from electrodes to cable to PIU

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9
Q

Compression coils

A

0.1 mm stainless wire rolling on compression coil

Prevents waviness of shaft during deflection

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10
Q

Puller wire

A

Puller wire attaches to an anchor at the distal tip of catheter

Allows for predictable tip deflection with minimal chatter

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11
Q

Electrodes

A

Catheters are named based on the number of electrodes
Deca polar

Allow catheters to pace and record electrical activity

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12
Q

Electrodes are made of

A

90% platinum (high conductivity)

10% iridium (increased hardness)

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13
Q

Electrode spacing

A

Measured in mm from center of one electrode to the center of the next
2-8-2

Unique to BWI
Gives higher signal resolution

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14
Q

Catheter tip

A

Can be rounded (domed)

1-8mm in length

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15
Q

Core diagnostic catheters are only approved for:

A

Stimulation and recording

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16
Q

The 3 core diagnostic catheters are:

A

Quadripolar

Decapolar

Twenty pole catheters

17
Q

Quadrapolar catheters are:

A

Core diagnostic

4 electrodes
Spaced 5, 10, or 2-5-2

18
Q

Decapolar catheters are:

A

Core diagnostic

10 electrodes

2-8-2 spacing

Uni and bidirectional

Used for activation sequence large area

Most common
Webster CS catheter

19
Q

20 pole catheters are:

A

Core diagnostic

20 electrodes

2-8-2 or 2-10-2 spacing

Uni directional

Used in place of 2 decapolar catheters

Most common
Duo deca
2-8-2 with 60mm gap between distal and proximal 10 electrodes

20
Q

Therapeutic catheters are approved for:

A

Stimulation, recording, electro anatomical mapping, and ablation

21
Q

Two types of therapeutic catheters are:

Tip

A

Solid tip

Irrigated tip

22
Q

Two types of solid tip catheters are:

Therapeutic

A

Navistar 4mm

Webster 8mm (DS)

23
Q

Navistar 4mm is:

A

Therapeutic catheter: solid tip

2 distal 2 proximal electrodes allow for bipolar signalsw

D or F curve

Commonly used to treat focal arrhythmias in thin walled areas. RA

1st ablation catheter

24
Q

Webster 8mm dual sensor (DS) is:

A

Therapeutic catheter: solid tip

Measures temperatures at 2 locations via thermocouples

2 distal 2 proximal electrodes allow for bipolar signalsw

Deflectable tip

D, F, J curves

Used for linear ablations

Indicated for use: type 1 atrial flutter patients 18 or older

25
Q

Two types of irrigated tip catheters

Therapeutic

A

Thermacool catheter
(Smart touch)

Thermocool catheter SF
Smarttouch

26
Q

Thermocool catheter is:

A

Therapeutic

27
Q

Thermocool SF catheter is:

A

Therapeutic

3.5 mm tip electrode
Spacing 2-5-2
Uni and bidirectional 
Curves D, F, J and D/F, F/J
Porous tip
28
Q

Advanced diagnostic catheters are approved for:

A

Stimulation, recording, and electro anatomical mapping

29
Q

The 3 advanced diagnostic catheters are:

A

Decanav mapping catheter

Pentaray NAV catheter

Lasso NAV Catheter

30
Q

Decanav mapping catheter is:

A

Advanced mapping catheter

10 electrodes 
2-8-2 spacing
Unidirectional 
F and D curve
Has a single proximal IVC electrode that can be used for unipolar recording signals

Designed for use in atria, ventricles, and CS

31
Q

Pentaray NAV catheter is:

A

Advanced diagnostic

5 soft spines (spider web)
20 total electrodes, 4 1mm electrode per
Spacing 4-4-4 or 2-6-2
Curve: F or D
Unidirectional 
Irrigated at base of splines

Obtain electrograms in atrial and ventricles

32
Q

Lasso NAV catheter is:

A

Advanced diagnostic

Nitinol loop
10-20 electrodes
Fixed or variable loop
Used for electrograms in atrial regions

Fixed loop
15, 20, 25 mm diameter
Spacing: 4.5, 6, 8
Unidirectional D curve

Variable loop
25-15 mm diameter
Spacing 8mm or 2-6-2

Unidirectional D curve

Foundations (19 decks)

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