Table 3.
Studies comparing catheters with various electrode sizes and spacing
| Catheter tested | Comparator catheter | Effect on overall voltage | Effect on LVA size | Reference | ||||
|---|---|---|---|---|---|---|---|---|
| Name | Electrode size (mm2) | Electrode spacing (mm) | Name | Electrode size (mm2) | Electrode spacing (mm) | |||
| Pentaray | 1 | 2–6 | Thermocool | 3.5 | 1–6–2 | Increase in scar only | Decrease | [21] |
| Lasso | 1 | 8 | Thermocool | 3.5 | 1–6–2 | Increase | Decrease | [20] |
| Orion Basket | 0.4 | 2.5 | Pentaray | 1 | 2–6 | – | Unchanged | [87] |
| Lasso | 1 | 1–2 | ||||||
| Intella Tip | 0.8 (within 4.5 mm tip) | 1.2 | TactiCath | 3.5 | 2–5–2 | – | Increased | [88] |
| Circular mapping catheter | 1 | 5 | – | Unchanged | ||||
| Inquiry Optima | 1 | 7 | Cool Flex | 4 | 0.5–5–2 | – | Decrease | [89] |
Catheters studied: Thermocool SmartTouch CF contact force-sensing catheter (Biosense Webster); Pentaray (Biosense Webster); Variable Loop Eco Nav (Biosense Webster); Orion Basket catheter (Boston Scientific); Inquiry Optima (St. Jude Medical); Intella Tip Micro Fidelity MiFi O/I (Boston Scientific); TactiCath Quartz (St. Jude Medical); Cool Flex (IBI/St. Jude Medical); HD-Grid catheter (Abbott, St. Paul, Minnesota). Spacing is as quoted by the manufacturer and is not ‘centre to centre’ spacing