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Cardiac Innovation

For more information on City of London Medical Centre, please contact the GP Liaison Department on:

T: 020 7234 2009




Cardiac Innovation

City of London Medical Centre is proud

to be able to provide a range of services

for the diagnosis and treatment of

numerous cardiac conditions, offering

appointments which are convenient for

busy City professionals.

The City of London Medical Centre

has launched a new service in the

last six months – the implantable

Medtronic Linq device. This device can

help diagnose patients experiencing

infrequent palpitations, Atrial Fibrillation

(AF),‘funny turns’, blackouts or syncope.

The device is the smallest implantable

heart monitor in the world (the size of

two matchsticks), and replaces the older

Reveal XT monitor, which was the size

of a memory stick. This device is able to

continuously record a single-lead ECG

for up to three years. It automatically

detects episodes of profound bradycardia,

tachycardia or AF, and transmits these

wirelessly to a secure website. The

device is used to diagnose causes of

palpitations or syncope, to detect AF or

to confirm success after treatments such

as catheter ablation. The device is safe

for use in MRI scanners.

The Medtronic Linq is injected under

local anaesthetic via a small incision in

the lower left chest using an implant

tool, which takes less than a minute.

Unlike the old device, this new tiny

Dr Oliver Segal is currently the

leading heart specialist at The Heart

Hospital, University College London

– however, he will soon move to

the new Barts Heart Centre at St

Bartholomew’s Hospital which will

form the largest cardiac unit in the

UK. He is an expert in managing

all types of heart rhythm disorder

and, in particular, performing

catheter ablation for atrial

fibrillation. He is also a specialist

in the implantation of pacemakers,

defibrillators, biventricular pacing

systems/CRT and other cardiac

devices. He has performed over

1,600 electrophysiology studies

and ablations (including the use of

three-dimensional and non-contact

mapping systems) and more than

900 device implantation procedures.

He also performs pacemaker lead

extraction (including user laser)

and implants left atrial appendage

occlusion devices (the Watchman

device) for patients with AF and

a high risk of stroke who cannot

take anticoagulants. Dr Segal has a

weekly clinic on Monday evenings at

the City of London Medical Centre

and at other times by appointment.

Latest cardiac innovations

monitor can be implanted in a procedure

room as an outpatient procedure

and the device is not visible. Once

inserted, the new device communicates

wirelessly to its home port, called a

‘MyCareLink’ monitor. Visit


to learn

more about the device.

The ‘MyCareLink’ monitor will work

anywhere in the world where there is a

3G mobile phone network, so patients

can still be monitored on holiday or if

travelling abroad on business. If abnormal

heart rhythm data is detected, it is

transmitted from the Medtronic Linq to

the MyCareLink monitor automatically

every night over a secure internet

connection. Automatic transmissions

simply require the patient to be within

2m of the monitor.

The information transmitted is accessible

only by the Consultant, via a secure

web portal – and serious events, such

as profound tachycardia or bradycardia,

will generate an email alert to the

Consultant 24 hours a day, 7 days a

week. Patients can also send information

at other times, for example if they

are experiencing symptoms, using the

monitor’s digital display, which guides

the transmission process and confirms

information has been sent correctly.

This device has been available at London

Bridge Hospital for some time, but is

now available in an outpatient setting,

meaning patients do not have to travel

to the main hospital, but can have the

device implanted at a convenient time

for them, such as during a lunch break

or after work.

Dr Oliver Segal


Consultant Cardiologist

and Electrophysiologist