We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us


Medtronic offers medical products and therapies for the treatment of cardiac and vascular diseases, diabetes, and neu... read more Featured Products: More products

Download Mobile App


ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.

Dual-Chamber Implanted Pacemaker Detects Cardiac Movement

By HospiMedica International staff writers
Posted on 03 Feb 2020
Print article
Image: The Micra AV leadless pacemaker with internal atrial sensing algorithms (Photo courtesy of Medtronic)
Image: The Micra AV leadless pacemaker with internal atrial sensing algorithms (Photo courtesy of Medtronic)
A miniaturized device offers patients with AV block an advanced leadless technology at one-tenth the size of a traditional pacemaker.

The Medtronic (Dublin, Ireland) Micra AV provides atrioventricular (AV) synchrony capabilities, thanks to a built-in three dimensional (3D) accelerometer that can sense the back and forth movement of the heart, and can therefore coordinate pacing of the ventricle that it is synchronized with the contractions of the atrium. The Micra AV pacemaker is identical in size and shape with the original Micra Transcatheter Pacing System (TPS), with an estimated 12-year battery life, and is approved for full body 1.5 and 3 Tesla scans magnetic resonance imaging (MRI) scans.

Micra AV is delivered via a minimally invasive percutaneous catheter through the femoral vein and is then positioned inside the right ventricle, directly attached to the heart via small nitinol tines that hold it and the electrodes in place; it can be repeatedly repositioned to make sure that heart activity and low electrical thresholds are at optimal levels. Once positioned, the device responds to patients' activity levels by automatically adjusting therapy. And as it does not require a subcutaneous surgical pocket to be created, potential complications are eliminated.

“Since revolutionizing medicine with the first battery-powered cardiac pacemakers, Medtronic has continued to develop pioneering pacing technologies, culminating in the first miniaturized, leadless pacing portfolio for physicians and their patients,” said Rob Kowal, MD, PhD, of the Vascular Group at Medtronic. “The introduction of Micra AV reinvents our own innovation, bringing the many benefits of leadless pacemakers to more patients.”

“With the approval of Micra AV, more pacemaker patients qualify for a new treatment option that offers the advantages of leadless pacing, including a minimally invasive implant procedure and a cosmetically invisible device,” said cardiac electrophysiologist Larry Chinitz, MD, director of the NYU Langone Heart Rhythm Center (New York, NY, USA). “Although complications with traditional pacemakers are infrequent, when they occur, they’re expensive to treat and can be invasive for the patient. Real-world use of Micra has shown a 63% reduction in major complications compared to traditional pacemakers.”

Within the right atrium of a normal heart is a natural pacemaker that sends an electrical stimulus that travels from the pacemaker (SA node) to the ventricles (AV node). In the presence of an AV block the transfer of the electrical nerve conduction that regulates the normal, rhythmic, pumping action of the heart muscle is interrupted or slowed. If the heart block occurs in the fetus or newborn, the condition is known as congenital heart block.

Related Links:

Gold Supplier
SBRT Phantom with Removable Spine
E2E SBRT Phantom with Removable Spine Model 036S-CVXX-xx
Double Roller Pump for Arthroscopy
Portable Suction Device
330 Multifunction Aspirator
Digital Physician's Model

Print article



view channel
Image: The WHO has conditionally recommended the use of algorithms in assisting with pediatric tuberculosis diagnosis (Photo courtesy of Pexels)

New Evidence-Based Algorithms Could Improve Diagnosis of Pediatric Tuberculosis

Tuberculosis (TB) continues to be one of the most prevalent causes of death among younger populations worldwide. Research indicates that over 96% of the deadly TB cases in children under the age of 15... Read more

Surgical Techniques

view channel
Image: Lighting up tumors could help surgeons remove them more precisely (Photo courtesy of Pexels)

‘Molecular Imaging’ Lights up Tumors for Surgeons to Enable Precise Removal

Neuroblastoma is a devastating form of childhood cancer that accounts for 8-10% of all childhood cancers and roughly 15% of all childhood deaths from cancer. Sadly, in almost one-third of cases, the cancer... Read more

Health IT

view channel
Image: Using digital data can improve health outcomes (Photo courtesy of Unsplash)

Electronic Health Records May Be Key to Improving Patient Care, Study Finds

When a patient gets transferred from a hospital to a nearby specialist or rehabilitation facility, it is often difficult for personnel at the new facility to access the patient’s electronic health records... Read more


view channel
Image: The demand for endometrial ablation devices is increasing due to rising prevalence of gynecological disorders (Photo courtesy of Pexels)

Global Endometrial Ablation Market Driven by Rising Prevalence of Gynecological Disorders

Gynecological disorders, such as menorrhagia, PCOD, abnormal vaginal bleeding, affect millions of women globally every year and are on the rise. Abnormal Uterine Bleeding (AUB) is the most common disorder... Read more
Copyright © 2000-2023 Globetech Media. All rights reserved.