# Feasibility, safety, and comfort of the ‘2BB’ (2 cm below the bra) position of insertable cardiac monitors in women: the IN-WOMEN-ICM pilot study

## TL;DR

This pilot study evaluates the feasibility, safety, and comfort of placing cardiac monitors 2 cm below the bra in women.

## Contribution

The study introduces the '2BB' position as a novel insertion site for cardiac monitors in women.

## Key findings

- The 2BB position showed consistent R-wave amplitudes and P-wave visibility over time.
- Patients reported high comfort scores with the 2BB insertion site.
- The 2BB position appears safe and feasible for long-term cardiac monitoring.

## Abstract

Graphical AbstractThe left panel depicts a female thorax in supine position, highlighting the 2 cm below the underwire bra (2BB) inframammary insertion and chest X-ray images of a patient with the device inserted in the proposed position. The middle panel shows boxplots with median, Q1, Q3, Min, and Max values for the R-wave amplitude at insertion, wound follow-up, and end of follow-up (left axis) and the percentage of patients for whom P-waves were visible at standard resolution at insertion, wound follow-up, and end of follow-up (right axis), and an electrocardiogram recorded by a device implanted in the 2BB position. The right panel shows mean scores for each questionnaire item (0 = not at all, 5 = very much).

The left panel depicts a female thorax in supine position, highlighting the 2 cm below the underwire bra (2BB) inframammary insertion and chest X-ray images of a patient with the device inserted in the proposed position. The middle panel shows boxplots with median, Q1, Q3, Min, and Max values for the R-wave amplitude at insertion, wound follow-up, and end of follow-up (left axis) and the percentage of patients for whom P-waves were visible at standard resolution at insertion, wound follow-up, and end of follow-up (right axis), and an electrocardiogram recorded by a device implanted in the 2BB position. The right panel shows mean scores for each questionnaire item (0 = not at all, 5 = very much).