Table 15.

Rhythm and Conduction Disturbances

Preindex procedure
Rhythm or conduction disturbance	First-degree AV block
	Second-degree AV block
	Right bundle branch block
	Left bundle branch block
	Left anterior hemiblock
	Left posterior hemiblock
	IVCD with QRS ≥ 120 ms
	Bradycardia (heart rate <60 beats/min) or sick sinus syndrome
	Atrial fibrillation/flutter (indicate whether paroxysmal or persistent, long-standing, or recent)
CIEDs	Type of implanted CIED should be recorded (eg, single chamber, dual chamber, resynchronization therapy, physiological pacing (ie, HIS and left bundle), leadless pacemaker, transvenous, or subcutaneous defibrillator)
	Implantation indication and date (eg, pre-existing or new in planning before tricuspid intervention)
	Pre-existing device revision or extraction (indicate which)
During or after index procedurea
New-onsetb rhythm or conduction disturbance	First-, second-, third-degree AV block
	Right bundle branch block
	Left bundle branch blockc Left anterior hemiblockc Left posterior hemiblockc
	IVCD with QRS ≥ 120 ms
	Bradycardia (heart rate <60 beats/min) or sick sinus syndrome
	Atrial fibrillation/flutter
	Nonfatal ventricular arrhythmia (indicate nonsustained [<30 s] or sustained [ ≥ 30 s])
Timing of rhythm or conduction disturbance	Periprocedural: ≤30 d after the index procedure
	Early: > 30 d but ≤1 y after index hospitalization
	Late: > 1 y after index hospitalization
Duration of rhythm or conduction disturbance	Atrial fibrillation or flutter: Paroxysmal: resolved within ≤7 d of onset Persistent: persisting > 7 d Long-standing persistent: continuous atrial fibrillation > 12 mo in duration
	Bradycardia and conduction abnormalities: Transient: resolved within ≤7 d of onset Persistent: persisting > 7 d Permanent: present for > 30 d
New CIED	Indication: atrioventricular block, sick sinus syndrome, ventricular tachycardia or fibrillation, and so on
	Type: Pacemaker: single chamber, dual chamber, resynchronization, physiological pacing (ie, His-bundle or left bundle), leadless, epicardial. Defibrillator: single, dual, resynchronization
	Location of leads (eg, transannular, intraventricular, epicardial, coronary sinus, extravascular [subcutaneous, substernal, epicardial]).
	Timing: number of days after the index procedure
Pre-existing CIED	Change in pacing capture threshold ( ≥ 1 V at 0.5 ms)
	Change in pacing lead impedance (increase or decrease of > 200 Ω)
	Change in atrial or ventricular sensing not amenable to reprogramming
	Lead dislodgement
	Requirement for device revision after the tricuspid intervention
	Entrapment of transannular lead by the device

AV = atrioventricular; CIED = cardiac implantable electronic device; ECG = electrocardiogram; IVCD = intraventricular conduction delay.

^aThe calculation of new pacemaker rates should exclude patients with pre-existing pacemaker. The same principle applies to reporting of rates of new conduction disturbances and arrhythmias.

^bDefined as any arrhythmia or conduction abnormality that was not present at baseline and lasts sufficiently long to be recorded on a 12-lead ECG or at least 30 s on a rhythm strip.

^cLeft-sided conduction disturbances less likely in tricuspid valve procedures.