RA and RV Lead Info Flashcards
What are the 2 main insulation materials in leads?
silicone and polyurethane
What are the 4 techniques for obtaining access?
- needle stick or puncture
- cephalic cut down and puncture
- thoracoscopy
- thoracotomy
What are the common veins for obtaining access?
- subclavian vein
- axillary vein
What are the disadvantages of the needle stick method of obtaining access?
- pneumothorax
- hemothorax
- SVC perforation
Which insulation material is fragile, requiring multiple layers?
silicone
Which insulation material has a higher coefficient of friction, meaning less slippery than the other?
silicone
Which insulation material is sturdy and requires less layers/thinner application? (is thinner than the other)
polyurethane
Which insulation material has a lower coefficient of friction, meaning more slippery than the other?
polyurethane
What does ESC and MIO stand for in relation to lead insulation?
- Environmental Stress Cracking: usually affects outer, not inner conductor, no issues
- Metal Ion Oxidation: macrophage cells produce peroxide molecules that degrade the polyurethane insulation
Which lead insulation type is more likely to produce an immune response?
polyurethane
Is the 4076 lead considered a hybrid lead and what does that mean?
yes, contains inner silicone and outer polyurethane insulation
What do the individual numbers in the low-power lead model number represent (ex: 4076, 5076)?
- 1st number = insulation material
- 2nd number = shape
- 3rd number = Medtronic brand for the lead
- 4th number = polarity
For low-power leads: What does the number 4 in the 1st position in the lead model number represent (ex: 4076)?
- the 1st number indicates the type of insulation
- the number 4 = polyurethane
For low-power leads: What does the number 0 in the 2nd position in the lead model number represent (ex: 4076)?
- the 2nd number indicates the lead shape
- the number 0 = lead is straight in shape
For low-power leads: What does an even number in the 4th position of the lead model number represent?
the 4th number indicates the type of polarity
- an even number = bipolar
For low-power leads: What does an odd number in the 4th position of the lead model number represent?
- the 4th number indicates the type of polarity
- an odd number = unipolar
For low-power leads: What does the number 5 in the 1st position in the lead model number represent (ex: 5076)?
- the 1st number indicates the type of insulation
- the number 5 = silicone
For low-power leads: What does the number 1 in the 2nd position in the lead model number represent (ex: 4176)?
- the 2nd number indicates the lead shape
- the number 1 = lead is canted/curved in shape
For low-power leads: What does the number 5 in the 2nd position in the lead model number represent (ex: 4576)?
- the 2nd number indicates the lead shape
- the number 5 = lead is J-shaped
For low-power leads: What does the number 9 in the 2nd position in the lead model number represent (ex: 4976)?
- the 2nd number indicates the lead shape
- the number 9 = lead is an epicardial lead
For high-power leads: What do the numbers 69 in the 1st and 2nd position in the lead model number represent (ex: 6947)?
the number 69 labels the lead as a high power lead
For high-power leads: What does the number 4 in the 3rd position in the lead model number represent (ex: 6947)?
- the 3rd number identifies the number of electrodes on the lead
- the number 4 = tip, ring, RVcoil and SVC coil
For high-power leads: What does the number 3 in the 3rd position in the lead model number represent (ex: 6937)?
- the 3rd number identifies the number of electrodes on the lead
- the number 3 = tip, ring, and RVcoil
What do the individual numbers in the high-power lead model number represent (ex: 6947)?
- 1st and 2nd number = identifies lead as high-power
- 3rd number = number of electrodes (3 or 4)
- 4th number = type of fixation (active/passive)
