| Variable . | Matched ICE cases . | Matched no ICE controls . | P-valuea . |
|---|---|---|---|
| (n = 139) . | (n = 139) . | ||
| Age (years) | 15 [12–17] | 15.1 [13.1–16.8] | 0.66 |
| Female | 53 (38.1) | 69 (49.6) | 0.05 |
| Non-white | 19 (13.7) | 13 (9.4) | 0.26 |
| Weight (kg) | 56.8 [48.2–71.3] | 57.0 [46.3–71.4] | 0.60 |
| BSA (m2) | 1.6 [1.4–1.8] | 1.6 [1.4–1.8] | 0.61 |
| CHD | 19 (13.7) | 19 (13.7) | — |
| Biventricular CHD Ebstein | 7 (5.0) | 7 (5.0) | |
| Anomaly | 2 (1.4) | 2 (1.4) | |
| Fontan circulation | 5 (3.6) | 5 (3.6) | |
| Intracardiac baffle | 5 (3.6) | 5 (3.6) | |
| Arrhythmia mechanismb | — | ||
| AVRT | 81 (58.3) | 81 (58.3) | |
| AVNRT | 34 (24.5) | 34 (24.5) | |
| IART | 19 (13.7) | 19 (13.7) | |
| EAT | 3 (2.2) | 3 (2.2) | |
| PVCs/VT | 3 (2.2) | 3 (2.2) | |
| Pre-excitation | 43 (30.1) | 43 (30.1) | — |
| Arrhythmia site | — | ||
| Right | 64 (46.0) | 64 (46.0) | |
| Left | 62 (44.6) | 62 (44.6) | |
| >1 ablation site | 5 (3.6) | 5 (3.6) | |
| Trans-bafflec | 8 (5.8) | 8 (5.8) | |
| Acute procedural success | 139 (100) | 135 (97.1) | 0.12 |
| Complications | 2d (1.4) | 0 (0) | 1.0 |
| Fluoroscopy exposure (min) | 0.3 [0.1–3.5] | 2.1 [0.2–4.1] | 0.02 |
| Procedural time (min) | 141 [118.5–182] | 173 [124–219.5] | 0.01 |
| Arrhythmia recurrencee | 9 (6.5) | 23 (16.5) | 0.01 |
| Variable . | Matched ICE cases . | Matched no ICE controls . | P-valuea . |
|---|---|---|---|
| (n = 139) . | (n = 139) . | ||
| Age (years) | 15 [12–17] | 15.1 [13.1–16.8] | 0.66 |
| Female | 53 (38.1) | 69 (49.6) | 0.05 |
| Non-white | 19 (13.7) | 13 (9.4) | 0.26 |
| Weight (kg) | 56.8 [48.2–71.3] | 57.0 [46.3–71.4] | 0.60 |
| BSA (m2) | 1.6 [1.4–1.8] | 1.6 [1.4–1.8] | 0.61 |
| CHD | 19 (13.7) | 19 (13.7) | — |
| Biventricular CHD Ebstein | 7 (5.0) | 7 (5.0) | |
| Anomaly | 2 (1.4) | 2 (1.4) | |
| Fontan circulation | 5 (3.6) | 5 (3.6) | |
| Intracardiac baffle | 5 (3.6) | 5 (3.6) | |
| Arrhythmia mechanismb | — | ||
| AVRT | 81 (58.3) | 81 (58.3) | |
| AVNRT | 34 (24.5) | 34 (24.5) | |
| IART | 19 (13.7) | 19 (13.7) | |
| EAT | 3 (2.2) | 3 (2.2) | |
| PVCs/VT | 3 (2.2) | 3 (2.2) | |
| Pre-excitation | 43 (30.1) | 43 (30.1) | — |
| Arrhythmia site | — | ||
| Right | 64 (46.0) | 64 (46.0) | |
| Left | 62 (44.6) | 62 (44.6) | |
| >1 ablation site | 5 (3.6) | 5 (3.6) | |
| Trans-bafflec | 8 (5.8) | 8 (5.8) | |
| Acute procedural success | 139 (100) | 135 (97.1) | 0.12 |
| Complications | 2d (1.4) | 0 (0) | 1.0 |
| Fluoroscopy exposure (min) | 0.3 [0.1–3.5] | 2.1 [0.2–4.1] | 0.02 |
| Procedural time (min) | 141 [118.5–182] | 173 [124–219.5] | 0.01 |
| Arrhythmia recurrencee | 9 (6.5) | 23 (16.5) | 0.01 |
Values are presented as median [interquartile range] or n (%).
AVNRT, atrioventricular nodal re-entrant tachycardia; AVRT, atrioventricular re-entrant tachycardia; BSA, body surface area; EAT, ectopic atrial tachycardia; IART, intra-atrial re-entrant tachycardia; ICE, intracardiac echocardiography; IQR, interquartile range; PVCs/VT, premature ventricular complexes/ventricular tachycardia.
aMatched variable P-values are 1.0 and not elsewhere reported.
bSome patients had multiple arrhythmia mechanisms.
cTrans-baffle approach included Fontan and intracardiac baffles in biventricular palliations.
dTransseptal needle entry into pericardial space during first transseptal attempt (without ICE). One case with atrial flutter that degenerated into ventricular fibrillation arrest, requiring compressions; not related to ICE usage.
eFor the purposes of arrhythmia recurrence, only patients undergoing successful ablation were considered.
| Variable . | Matched ICE cases . | Matched no ICE controls . | P-valuea . |
|---|---|---|---|
| (n = 139) . | (n = 139) . | ||
| Age (years) | 15 [12–17] | 15.1 [13.1–16.8] | 0.66 |
| Female | 53 (38.1) | 69 (49.6) | 0.05 |
| Non-white | 19 (13.7) | 13 (9.4) | 0.26 |
| Weight (kg) | 56.8 [48.2–71.3] | 57.0 [46.3–71.4] | 0.60 |
| BSA (m2) | 1.6 [1.4–1.8] | 1.6 [1.4–1.8] | 0.61 |
| CHD | 19 (13.7) | 19 (13.7) | — |
| Biventricular CHD Ebstein | 7 (5.0) | 7 (5.0) | |
| Anomaly | 2 (1.4) | 2 (1.4) | |
| Fontan circulation | 5 (3.6) | 5 (3.6) | |
| Intracardiac baffle | 5 (3.6) | 5 (3.6) | |
| Arrhythmia mechanismb | — | ||
| AVRT | 81 (58.3) | 81 (58.3) | |
| AVNRT | 34 (24.5) | 34 (24.5) | |
| IART | 19 (13.7) | 19 (13.7) | |
| EAT | 3 (2.2) | 3 (2.2) | |
| PVCs/VT | 3 (2.2) | 3 (2.2) | |
| Pre-excitation | 43 (30.1) | 43 (30.1) | — |
| Arrhythmia site | — | ||
| Right | 64 (46.0) | 64 (46.0) | |
| Left | 62 (44.6) | 62 (44.6) | |
| >1 ablation site | 5 (3.6) | 5 (3.6) | |
| Trans-bafflec | 8 (5.8) | 8 (5.8) | |
| Acute procedural success | 139 (100) | 135 (97.1) | 0.12 |
| Complications | 2d (1.4) | 0 (0) | 1.0 |
| Fluoroscopy exposure (min) | 0.3 [0.1–3.5] | 2.1 [0.2–4.1] | 0.02 |
| Procedural time (min) | 141 [118.5–182] | 173 [124–219.5] | 0.01 |
| Arrhythmia recurrencee | 9 (6.5) | 23 (16.5) | 0.01 |
| Variable . | Matched ICE cases . | Matched no ICE controls . | P-valuea . |
|---|---|---|---|
| (n = 139) . | (n = 139) . | ||
| Age (years) | 15 [12–17] | 15.1 [13.1–16.8] | 0.66 |
| Female | 53 (38.1) | 69 (49.6) | 0.05 |
| Non-white | 19 (13.7) | 13 (9.4) | 0.26 |
| Weight (kg) | 56.8 [48.2–71.3] | 57.0 [46.3–71.4] | 0.60 |
| BSA (m2) | 1.6 [1.4–1.8] | 1.6 [1.4–1.8] | 0.61 |
| CHD | 19 (13.7) | 19 (13.7) | — |
| Biventricular CHD Ebstein | 7 (5.0) | 7 (5.0) | |
| Anomaly | 2 (1.4) | 2 (1.4) | |
| Fontan circulation | 5 (3.6) | 5 (3.6) | |
| Intracardiac baffle | 5 (3.6) | 5 (3.6) | |
| Arrhythmia mechanismb | — | ||
| AVRT | 81 (58.3) | 81 (58.3) | |
| AVNRT | 34 (24.5) | 34 (24.5) | |
| IART | 19 (13.7) | 19 (13.7) | |
| EAT | 3 (2.2) | 3 (2.2) | |
| PVCs/VT | 3 (2.2) | 3 (2.2) | |
| Pre-excitation | 43 (30.1) | 43 (30.1) | — |
| Arrhythmia site | — | ||
| Right | 64 (46.0) | 64 (46.0) | |
| Left | 62 (44.6) | 62 (44.6) | |
| >1 ablation site | 5 (3.6) | 5 (3.6) | |
| Trans-bafflec | 8 (5.8) | 8 (5.8) | |
| Acute procedural success | 139 (100) | 135 (97.1) | 0.12 |
| Complications | 2d (1.4) | 0 (0) | 1.0 |
| Fluoroscopy exposure (min) | 0.3 [0.1–3.5] | 2.1 [0.2–4.1] | 0.02 |
| Procedural time (min) | 141 [118.5–182] | 173 [124–219.5] | 0.01 |
| Arrhythmia recurrencee | 9 (6.5) | 23 (16.5) | 0.01 |
Values are presented as median [interquartile range] or n (%).
AVNRT, atrioventricular nodal re-entrant tachycardia; AVRT, atrioventricular re-entrant tachycardia; BSA, body surface area; EAT, ectopic atrial tachycardia; IART, intra-atrial re-entrant tachycardia; ICE, intracardiac echocardiography; IQR, interquartile range; PVCs/VT, premature ventricular complexes/ventricular tachycardia.
aMatched variable P-values are 1.0 and not elsewhere reported.
bSome patients had multiple arrhythmia mechanisms.
cTrans-baffle approach included Fontan and intracardiac baffles in biventricular palliations.
dTransseptal needle entry into pericardial space during first transseptal attempt (without ICE). One case with atrial flutter that degenerated into ventricular fibrillation arrest, requiring compressions; not related to ICE usage.
eFor the purposes of arrhythmia recurrence, only patients undergoing successful ablation were considered.
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