Treatments

DIAGNOSIS OF HEART FAILURE

Although there are many different causes of Heart Failure, the diagnosis is broadly based on the results of an echocardiogram or MRI scan of the heart, performed to establish whether the heart muscle’s pumping function is reduced (Heart Failure with reduced Ejection Fraction HFrEF), or preserved (Heart Failure with preserved Ejection Fraction HFpEF). 

As the treatment for Heart Failure varies depending on whether the ejection fraction is preserved or reduced, the information contained here summarises the management of patients who have Heart Failure with reduced Ejection Fraction.

MEDICATIONS

MEDICATIONS USED TO IMPROVE/STABILISE HEART FUNCTION IN PATIENTS WITH HEART FAILURE AND REDUCED EJECTION FRACTION

Several medications are designed to improve/stabilise the heart muscle’s pumping function. The type of medication used may vary depending on your ejection fraction. These medications are designed to:

  1. Relieve congestion
  2. Improve heart function
  3. Reduce the risk of you being hospitalised due to Heart Failure
  4. Improve your prognosis and reduce your risk of dying prematurely

 

For Heart Failure patients with reduced heart pumping function (ranging from mildly impaired, to more significantly moderate or severe impairment), up to 5 different types of medications may be used in your treatment, such as:

  1. Diuretics (water tablets)
  2. Beta blockers
  3. ACE inhibitors ARB or ARNi (patients may be prescribed any one of these medications designed to improve and stabilise heart function. In a majority of cases your specialist may discuss switching an ACE inhibitor or ARB over to ARNi.)
  4. MRA
  5. SGLT2 inhibitors

Mild to moderately reduced heart muscle pumping function

In selected patients with less severe heart muscle impairment (mild–moderately impaired), only some medications may be indicated. These may include:

  • Diuretics (water tablets)
  • Beta blockers
  • ACE inhibitors/ARB

CARDIAC DEVICES

While pacemakers are commonly used to treat slow heartbeats, in patients with Heart Failure where the heart muscle pumping function is significantly impaired, more complex devices with specialist functions may be indicated. Their role is summarised on the next page.

  • In instances where your heart function improves significantly after medication, a cardiac device may no longer be required, or deferred.
  • However, up to one-third of patients with Heart Failure may benefit from a cardiac implantable electronic device. In this instance your clinical care team are likely to discuss this with you.
  • Sometimes this discussion occurs soon after diagnosis. In other cases, your heart care team may wait until you have been stabilised on medications for a few months before reassessing your heart function and deciding whether a cardiac device is indicated.

ICD or pacemaker?

  • In selected patients with Heart Failure, an implantable cardioverter defibrillator (ICD), either on its own, or combined with a specialised pacemaker designed to resynchronise the heart (cardiac resynchronisation therapy pacemaker; CRT) may be indicated.
  • While some patients require either a CRT pacemaker or an ICD, other patients require a device that can do both.
  • An ICD differs from a pacemaker in that pacemakers are designed to regulate the heartbeat but do not give a shock like an ICD.
    ICDs are used in the treatment of patients at high risk of potentially life-threatening heart rhythm problems.

TYPES OF CARDIAC IMPLANTABLE ELECTRONIC DEVICES IMPLANTABLE CARDIOVERTER DEFIBRILLATOR (ICD): WHO GETS ONE?

An ICD is designed to prevent a person identified to be at increased risk of an abnormal heart rhythm from dying suddenly due a dangerous heart rhythm.

What is an ICD?

An ICD is a small device, typically compared to the size of a stopwatch, that is placed under the skin at the top of the chest, just below the collarbone.

  • A lead is introduced through a vein at the top of the chest and placed in contact with the inside of the bottom chamber of the heart (right ventricle).
  • When the lead is connected to the ICD battery, the device is now able to monitor every single heartbeat.
  • I f the ICD detects a potentially life-threatening heart rhythm then the device first watches to see if the abnormal rhythm terminates.
  • I f the abnormal heart rhythm continues, the ICD is programmed to either deliver extra beats to terminate the abnormal rhythm or deliver a shock to restart the heart in a regular rhythm.

 

TYPES OF CARDIAC IMPLANTABLE ELECTRONIC DEVICES CARDIAC RESYNCHRONISATION THERAPY: WHO GETS ONE?

  • The majority of patients who go on to receive a CRT device have an abnormality on their ECG called bundle branch block (most commonly left bundle branch block), which results in delayed electrical conduction through the heart, which in turn can cause the heart to pump less efficiently and contribute to low heart muscle pumping function.
  • Most people with left bundle branch block have no symptoms and do not require treatment.
  • However, if you have left bundle branch block with low heart pumping function, your cardiac care team may recommend cardiac resynchronisation therapy. This consists of a lead being placed in contact with the right and left sides of the heart to stimulate both sides to contract at the same time and resynchronise your heart function.

Benefits of having a CRT device

A CRT pacemaker, either alone, or combined with a defibrillator is designed to improve heart muscle pumping function. Up to 70% of patients with low heart muscle pumping who undergo a CRT implant have an improvement in heart muscle pumping function (ejection fraction) (REF).

Brambatti M, et al. Cardiac resynchronization therapy improves ejection fraction and cardiac remodelling regardless of patients’ age, EP Europace, 2013; 15: 704–710.
Daubert JC, et al. 2012 EHRA/HRS expert consensus statement on cardiac resynchronization therapy in Heart Failure: implant and follow-up recommendations and management. Europace. 2012;14:1236–86.
Lewis GF, Gold MR. Developments in Cardiac Resynchronisation Therapy. Arrhythm Electrophysiol Rev. 2015;4(2):122-128.

In patients with Heart Failure, CRT pacemakers have been shown to:

  1. Improve heart function (ejection fraction) in 7 out of 10 patients fitted with a CRT
  2. Reduce the risk of being hospitalised due to Heart Failure
  3. Improve life expectancy

Secret sauce

Dictionary – “A special quality or feature regarded as the chief factor in the success of something or someone.”

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At Pumping Marvellous, we know it takes some real inner drive to live well with heart failure. Pumping Marvellous are Secret Sauce catalysts; we draw out people’s inner Secret Sauce, people’s superpowers and enable other people to learn from other people’s experiences.

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