Pacemaker or defibrillator lead in right ventricle

Definition

Presence of a transvenous cardiac implantable electronic device (pacemaker or ICD) lead chronically positioned across the tricuspid valve orifice into the right ventricle (apex or interventricular septum), traversing the tricuspid coaptation plane and potentially inducing variable degrees of tricuspid regurgitation due to mechanical interference or cicatricial fibrosis without evidence of active infection or lead dysfunction [G7-05] [G7-03].

Severity criteria

Severity grade: Single grade. Represents the anatomical and physiological baseline state of the intracardiac lead without endocarditis or major prosthetic dysfunction.
Quantification of lead-induced tricuspid regurgitation (CIED-induced TR):
- Quantitative criteria for mild tricuspid regurgitation (according to the consensus review of ASE/EACVI and JACC Cardiovasc Imaging [G7-05, Tabla 1] and ESC/EACTS 2025 guidelines [V1, Tabla 9]):
- Effective regurgitant orifice area (EROA): < 0.20 cm² (< 20 mm²).
- Regurgitant volume (RV): < 30 mL/beat.
- vena contracta width (VC): < 3.0 mm.
- Color Doppler jet area: < 5 cm².
- Epidemiological prevalence: New or worsened tricuspid regurgitation jet is documented in 15–40 % of patients undergoing right ventricular lead placement [G7-05].
Negative criterion: Complete absence of verrucous masses or vegetations attached to the lead and absence of bacteremia or systemic inflammatory response signs [G7-03].

Findings by layer

Hemodynamics

Mean right atrial pressure: Within normal physiological range (2–6 mmHg) [B3].
Right ventricular and pulmonary artery systolic pressures: Normal unless prior myocardial or pulmonary disease exists in the patient [M7].
Systemic cardiac output: Normal (4.5–6.5 L/min).

Rhythm

Default rhythm: Normal sinus rhythm with device in sensing or demand mode (VVI/DDD) [G7-03].
Alternative rhythm: 3rd degree atrioventricular block (third-degree AV block) with active ventricular pacing by the pacemaker at programmed base rate (60–70 bpm) [G7-03].

ECG

In sensing mode: Sinus rhythm with normal conduction or baseline intrinsic patient abnormalities [G7-03].
In pacing mode: Pacemaker spike immediately preceding the QRS complex, with complete left bundle branch block morphology (wide QRS > 120 ms with deep S waves in V1 and slurred R in lateral leads I and aVL) as depolarization originates in the right ventricular apex [E2] [G7-03].

Heart sounds and murmurs

Tricuspid systolic murmur: Soft or very mild holosystolic murmur (grade 1–2/6) at the lower left sternal border (tricuspid area), or complete absence of murmur if the lead courses commissurally without interfering with coaptation [B1] [G7-05].
Fundamental sounds (S1 and S2): Preserved and normal; possible wide physiological splitting of S2 during right ventricular pacing due to delayed electrical activation of the left ventricle [B1] [E2].

Arterial pulse

Peripheral arterial pulse symmetric, rhythmic, and of normal amplitude and morphology [B4].

Jugular venous pulse

Normal jugular venous pulse with preserved a and v waves and normal physiological x and y descents [B3].

Maneuvers

Deep inspiration: If mild lead-induced tricuspid regurgitation murmur is present, it shows a subtle inspiratory physiological increase (Rivero-Carvallo sign) [B1].
Expiration: Decrease in tricuspid murmur [B1].

Simulator severity grades

Simulator severity grades: Single grade

Baseline rhythm: Normal Sinus Rhythm

Also known as: Right ventricular pacemaker lead · Cardiac implantable electronic device lead · Pacemaker lead · Transvenous ICD lead · CIED lead

Other pathologies in this group

Sources

[B1] Bedside diagnosis of systolic murmurs . N Engl J Med (1988) . DOI: 10.1056/NEJM198806163182404 PubMed: 2897627
[B3] The jugular venous pressure revisited . Cleve Clin J Med (2013) . DOI: 10.3949/ccjm.80a.13039 PubMed: 24085809
[B4] The Carotid Pulse . Clinical Methods: The History, Physical, and Laboratory Examinations (1990) . PubMed: 21250154
[E2] AHA/ACCF/HRS recommendations for the standardization and interpretation of the electrocardiogram: part III: intraventricular conduction disturbances: a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Clinical Cardiology; the American College of Cardiology Foundation; and the Heart Rhythm Society: endorsed by the International Society for Computerized Electrocardiology . Circulation (2009) . DOI: 10.1161/CIRCULATIONAHA.108.191095 PubMed: 19228822
[G7-03] European Heart Rhythm Association (EHRA) international consensus document on how to prevent, diagnose, and treat cardiac implantable electronic device infections-endorsed by the Heart Rhythm Society (HRS), the Asia Pacific Heart Rhythm Society (APHRS), the Latin American Heart Rhythm Society (LAHRS), International Society for Cardiovascular Infectious Diseases (ISCVID) and the European Society of Clinical Microbiology and Infectious Diseases (ESCMID) in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS) . Europace (2020) . DOI: 10.1093/europace/euz246 PubMed: 31702000
[G7-05] Cardiac Implantable Electronic Device Lead-Induced Tricuspid Regurgitation . JACC Cardiovasc Imaging (2019) . DOI: 10.1016/j.jcmg.2018.09.028 PubMed: 30947905
[M7] Pulmonary arterial pressure during rest and exercise in healthy subjects: a systematic review . Eur Respir J (2009) . DOI: 10.1183/09031936.00145608 PubMed: 19324955
[V1] 2025 ESC/EACTS Guidelines for the management of valvular heart disease . Eur Heart J (2025) . DOI: 10.1093/eurheartj/ehaf194 PubMed: 40878295
[V3] Recommendations for Noninvasive Evaluation of Native Valvular Regurgitation: A Report from the American Society of Echocardiography Developed in Collaboration with the Society for Cardiovascular Magnetic Resonance . J Am Soc Echocardiogr (2017) . DOI: 10.1016/j.echo.2017.01.007 PubMed: 28314623