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OpenTrials
Completed

NCT Number: NCT05633394

Subcostal Temporary Extravascular Pacing V Study

The STEP V Study is a prospective, multicenter, acute (in-hospital), single-arm feasibility study. The objective of the study is to evaluate the early safety and performance of the latest AtaCor EV Temporary Pacing Lead System over a two-day use period.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Sanatorio Italiano

Asunción, Paraguay

About this study

The primary safety objective is freedom from Adverse Device Effects (ADE). The primary performance objective is summary statistics for pacing capture threshold, impedance, and sensed R-wave amplitude with the StealthTrac Lead from insertion through removal.

Up to three (3) Investigational Sites will participate with up to 50 subjects enrolled in the study. Subjects indicated for closed-chest cardiac invasive procedures will be eligible for participation. Subjects undergoing a qualifying index procedure will have a Model AC-101400 StealthTrac Lead inserted and evaluated over the follow-up period. Subject participation is expected to be 2 days with the Study Lead inserted, plus 30 days post lead removal. A 30 day (+/-3 days) post-removal follow-up will also be performed to document any latent adverse events. Subjects remain enrolled until completion of the 30-Day Follow Up.

The maximum duration for study participation is 33 days. Study duration estimated to be 3 years after the first study enrollment.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • At least 18 years old
  • Subjects indicated for closed-chest cardiac invasive procedure, including:
  • Transarterial transcatheter aortic valve implantation (TAVI)
  • Transarterial balloon aortic valvuloplasty (BAV)
  • Cardiovascular implantable electronic device (CIED) pulse generator replacement
  • Cardiovascular implantable electronic device (CIED) lead extraction or revision

Exclusion criteria

  • BMI ≥ 35 kg/m2
  • Septic shock
  • Severe anemia
  • Patients on dual antiplatelet therapy or anti-coagulation that cannot be stopped for the procedure
  • Circumstances that prevent data collection or follow-up (e.g., inability to perform a short walk with the Holter monitor)
  • Participation in any concurrent clinical study without prior written approval from the Sponsor
  • Inability or unwillingness to provide informed consent to participate in the Study

Known prior history for any of the following:

  • Median or partial sternotomy
  • Acute coronary syndrome within past 90 days
  • NYHA Functional Classification IV within past 90 days
  • Surgically corrected congenital heart disease (not including catheter-based procedures)
  • Allergies to the device materials such as stainless steel, titanium, platinum, iridium, polyethylene, polyurethane, polycarbonate and silicone
  • Surgery with disruption of the lung, pericardium or connective tissue between the sternum and pericardium, including adhesions
  • Significant anatomic derangement of or within the thorax (e.g., pectus excavatum, significant scoliosis)
  • Thoracic radiation therapy, pneumothorax, pneumomediastinum or other medical treatments which may complicate the AtaCor EV Temporary Pacing Lead System insertion procedure
  • Any conditions which may complicate the AtaCor EV Temporary Pacing Lead System insertion procedure
  • Pericardial disease, pericarditis and mediastinitis
  • Medical treatments, surgeries or conditions that increase the potential for pericardial adhesions
  • FEV1 < 1 liter

Treatment and study plan

AtaCor StealthTrac Lead

Device

Subjects will receive the AtaCor StealthTrac Lead being evaluated in the study.

Primary outcomes

  1. Freedom from ADEs

    Time frame: Up to 2 days post-insertion

    Freedom from Adverse Device Effects (ADE)

  2. Pacing Capture Threshold (mA or V)

    Time frame: Up to 2 days post-insertion

    Summary statistics for pacing capture threshold with the StealthTrac Lead from insertion through removal

  3. Impedance (Ohms)

    Time frame: Up to 2 days post-insertion

    Summary statistics for impedance with the StealthTrac Lead from insertion through removal

  4. Sensed R-Wave Amplitude (mV)

    Time frame: Up to 2 days post-insertion

    Summary statistics for sensed R-wave amplitude with the StealthTrac Lead from insertion through removal

Sponsors and collaborators

Lead sponsor

AtaCor Medical, Inc.

Industry

Registry information

Official study title

Subcostal Temporary Extravascular Pacing V (STEP V) Study

Acronym: STEP V

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Dec 1, 2022
Registry last updated
Aug 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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