Many patients who have cardiac resynchronisation therapy (a type of pacemaker) implanted for heart failure do not have the settings of their device optimised. The most widely available method for optimisation uses flow measured using cardiac ultrasound (echocardiography) to determine the optimal settings. However, this is not frequently performed because it is time consuming and requires two skilled operators. In this study the investigators will test a new non-invasive method for optimisation, which utilises pressure measurements (non-invasive blood pressure measured from the finger). Is optimising AV and VV delay using non-invasive haemodynamics at least equivalent, in terms of exercise capacity, to conventional echo optimisation.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
403
Comparing the method of non-invasive haemodynamic
Standard ECHO optimisation method
ICCH, Imperial College London
London, United Kingdom
Is optimising AV and VV delay using non-invasive haemodynamics at least equivalent, in terms of exercise capacity, to conventional echo optimisation
Time frame: 6 months following the last follow-up of the last patient
To determine whether pressure optimisation is at least equivalent to echo optimisation of flow: in terms resulting size of the heart in terms of quality of life scores in terms of blood marker of heart failure severity
Time frame: 6 months following the last follow-up of the last patient
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