Hotline 24/7: 0909384389

Share links:

TVT 2019: Purpose-designed temporary pacing guidewire has potential to make implantation of transcatheter heart valves “safer and more efficient”

Ngày 21/06/2019 07:35 | Lượt xem: 1398

Speaking during an innovation session at TVT 2019 (12-15 June, Chicago, USA), Mark Hensey (Centre for Heart Valve Innovation, St Paul’s Hospital, University of British Columbia, Vancouver, Canada) outlined the early experience with a purpose-designed temporary pacing guidewire (Wattson, Teleflex). He said the wire delivered “safe and effective pacing” for both aortic and tricuspid positions.

Hensey reported that a temporary transvenous pacemaker (TVP) is “commonly utilised to allow burst and back-up pacing” during transcatheter heart valve procedures. However, he said that TVP placement is “not without risks”–commenting that it can lead to vascular injury, bleeding and thrombosis among other complications. “Tricuspid valve-in-valve procedures, in particular, offer challenges because traditional placement of the wire in the right ventricle is not possible and you have to look at other options, such as the left ventricle or the coronary sinus,” Hensey commented.

He added that studies have demonstrated that a guidewire placed in the left ventricle could be used to provide unipolar pacing during transcatheter heart valve procedures but that this was also not without problems. Hensey explained that it “requires modification of the wire and technical expertise” and unipolar pacing “results in high thresholds and, potentially, loss of capture”. “If there is a need for back-up pacing, you cannot pace without the delivery system in place,” he added.

Therefore, the Wattson temporary pacing guidewire was developed. The wire is 0.035 inches in diameter and 280cm in length, with Hensey noting it was slightly than longer than standard guidewires to allow removal of the transcatheter heart valve system if pacing was required post deployment. The guidewire also has multiple exposed electrodes to allow consistent capture, connects to a standard external pacemaker, and provides bipolar pacing.

At present, the guidewire has been used in five patients–of whom, two underwent transcatheter tricuspid valve-in-valve interventions. All patients received a Sapien 3 valve (Edwards Lifesciences), the mean threshold was 2.2±0.45mA with no loss of capture in any case, and no patients required pacing after implantation. There were no complications.

Overall, according to Hensey, the advantages of the Wattson guidewire is that it avoids the need for a transvenous pacemaker, which reduces the risk of complications, reduces procedural time, and reduces radiation exposure. Also, it provides “reliable bipolar pacing”.

“In our early experience, the Wattson wire delivered safe and effective pacing along with excellent rail support in both aortic and tricuspid positions. It does have the potential to make transcatheter heart valve implantation safer and more efficient,” Hensey concluded. However, he added that further clinical experience was required and that an “early feasibility study was underway”.

Hensey and colleagues recently published their early experiences with the guidewire in EuroIntervention.

Source CardiovascularNews

Duc Tin Clinic

Tin tức liên quan

Enrolment reaches midway point in trial of Early Bird bleed monitoring system

Eight-fold increased risk of heart attack seen in patients with subclinical obstructive coronary atherosclerosis

ACC 2023: REVIVED-BCIS-2 results challenge “long-held beliefs” on myocardial viability testing prior to PCI

Blood pressure successfully cut in RADIANCE II ultrasound renal denervation trial

New data examine mortality rates and cardiac damage in early-stage aortic stenosis patients

SUPPORT CONSULTANT

CUSTOMER REVIEWS

• I am Nguyen Thanh Sang, born in 1990. Since the examination and treatment at the clinic Duc Tin, I am very grateful to the Doctor for explaining and sharing about my illness. During the treatment time in the clinic I was very caring staff of the clinic. Now my illness has improved in a good way. Expect more and more clinic to be able to save many patients.

  I sincerely thank you !. Tel: 0938303275

• Huynh Thi Muoi, born in 1940, was examined and treated at Duc Tin Clinic. I am very pleased about how to serve and care patients of the clinic. The doctor is committed to explaining and sharing with the patient.

  Huynh Thi Muoi sincerely thank you! Phone number: 0972868746

• As I said Duc Tin surgical clinin is where my family trust, hope to visit. Physicians caring, thoughtful, gentle to the patient. Nurses and staff clinic polite, cheerful and thoughtful. This clinic clean, sterile, so I would love to. Tel: +84949914060.

• The doctor is very caring, attentive and very gentle nurse, courteous, affable with me. The clinic is clean, comfortable, polite. I enjoyed this faith. Every visit I was very relieved disease. Tel: 0839820792.

• I was patient, had to clinics of Dr. Le Duc Tin. I see very conscientious doctor patient care, answer any questions and very dedicated staff from the receptionist to the children tested, nursing. Clinics very clean and spacious. I'm very satisfied. Tel: +841227880829.

Search

News

Customer support