February 1, 2020Journal of Innovations in Cardiac Rhythm ManagementOpen Access

Characteristics of Cardiac Memory in Patients with Implanted Cardioverter-defibrillators: The Cardiac Memory with Implantable Cardioverter-defibrillator (CAMI) Study

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Why the study?

Does seven days of right ventricular pacing induce cardiac memory in patients with implanted cardioverter-defibrillators?

Population

20 patients with preserved AV conduction receiving dual-chamber ICDs for primary or secondary prevention

Comparison

Electrocardiographic vectors before vs after 7 days of RV pacing in DDD mode

Follow-up

7 days

Authors

KHKazi T. HaqChildren's National JCJian CaoShaanxi Normal University LTLarisa G. Tereschenko

Discussion

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Implication

Preexistent remodeling modulates cardiac memory after short-term RV pacing; leaves open effects on outcomes or device programming in ICD patients.

Structured PICO

Does seven days of right ventricular pacing induce cardiac memory in patients with implanted cardioverter-defibrillators?

Population

20 patients with preserved atrioventricular conduction receiving dual-chamber ICDs for primary (80%) or secondary (20%) prevention, mean age 72.6, 80% male, mean LVEF 31.7%, history of MI in 75% and NSVT in 85%.

Intervention

Seven days of right ventricular (RV) pacing in DDD mode with a short atrioventricular delay

Comparator

Baseline (before 7 days of RV pacing)

Outcome

Cardiac memory (CM) quantified as the degree of alignment between QRS DDD-7 and T AAI-7 vectors (QRS DDD-7 -T AAI-7 angle) and changes in CM-T azimuth and areasurrogate

Preexistent electrical remodeling (such as prior MI) and female sex significantly affect the development of cardiac memory in response to right ventricular pacing.

Cite This Study

Haq et al. (2020) studied this question.

synapsesocial.com/papers/6a711d5d439bab0cabc3751a https://doi.org/10.19102/icrm.2021.120204

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Implication

Preexistent remodeling modulates cardiac memory after short-term RV pacing; leaves open effects on outcomes or device programming in ICD patients.

Characteristics of Cardiac Memory in Patients with Implanted Cardioverter-defibrillators: The Cardiac Memory with Implantable Cardioverter-defibrillator (CAMI) Study

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Characteristics of Cardiac Memory in Patients with Implanted Cardioverter-defibrillators: The Cardiac Memory with Implantable Cardioverter-defibrillator (CAMI) Study

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Also Consider

Also Consider