Unknown

Dataset Information

0

R-wave amplitude changes with posture and physical activity over time in an insertable cardiac monitor.


ABSTRACT:

Background

Insertable cardiac monitors (ICMs) are accepted tools in cardiac arrhythmia management. Consistent R-wave amplitude (RWA) is essential for optimal detection.

Objectives

Assess RWAs with posture/activities at insertion and at 30 days.

Methods

Participants (n = 90) with Confirm Rx™ ICM had RWAs measured in different postures (supine, right-side [RS], left-side [LS], sitting, and standing) and defined physical activities (including isometric push [IPUSH] and pull) at 2 time points. ICMs were inserted in 45° to sternum and parasternal orientations.

Results

There were significant reductions at insertion with RS, LS, sitting, or standing vs supine (reference position) (all P < .05). At 30 days, significant changes only occurred with LS and sitting (P < .05). Sex had an effect on RWAs, with females having significant variability at insertion (supine vs RS, LS, sitting, standing, and IPUSH; all P < .05). Males showed large RWA interpatient variabilities but minimal differences between positions vs supine. At 30 days, RS, LS, and sitting positions remained significant for females (P < .05), while in males RWAs were higher than at insertion for most postures and activities. The orientation 45° to sternum had consistently higher RWAs vs parasternal orientation at both time points (P < .0001). In females, ICM orientation had no significant effect on RWAs; however, in males the 45° to sternum produced higher RWAs. ICM movement from the insertion site showed no correlation with RWA changes.

Conclusion

The mean RWAs were higher at 30 days with less interparticipant and interpostural variability; males had higher RWAs compared to females; 45° to sternum orientation had higher RWAs; and ICM migration from the insertion site did not affect RWAs.

SUBMITTER: Swale M 

PROVIDER: S-EPMC9043368 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

R-wave amplitude changes with posture and physical activity over time in an insertable cardiac monitor.

Swale Matthew M   Delacroix Sinny S   Young Glenn G   Paul Vincent V   McSpadden Luke L   Ryu Kyungmoo K   Di Fiore David D   Santos Maria M   Tan Isabel I   Conradie Andre A   Duong MyNgan M   Schwarz Nisha N   Worthley Stephen S   Pavia Stephen S  

Cardiovascular digital health journal 20211230 2


<h4>Background</h4>Insertable cardiac monitors (ICMs) are accepted tools in cardiac arrhythmia management. Consistent R-wave amplitude (RWA) is essential for optimal detection.<h4>Objectives</h4>Assess RWAs with posture/activities at insertion and at 30 days.<h4>Methods</h4>Participants (n = 90) with Confirm Rx™ ICM had RWAs measured in different postures (supine, right-side [RS], left-side [LS], sitting, and standing) and defined physical activities (including isometric push [IPUSH] and pull) a  ...[more]

Similar Datasets

| S-EPMC9548115 | biostudies-literature
| S-EPMC9975005 | biostudies-literature
| S-EPMC3744555 | biostudies-literature
| S-EPMC9407126 | biostudies-literature
| S-EPMC6593196 | biostudies-literature
| S-EPMC9875401 | biostudies-literature
| S-EPMC10071510 | biostudies-literature
| S-EPMC9849434 | biostudies-literature
2007-12-15 | E-GEOD-75 | biostudies-arrayexpress
| S-EPMC5673395 | biostudies-literature