The best test for the patient — first time.

The test is quick and straightforward, typically taking around 10 minutes. Small adhesive electrodes are placed on the chest and limbs to record the electrical activity of the heart.

It is entirely painless, although some patients may require a small area of chest hair to be shaved to allow accurate electrode contact.

Almost all cardiology patients will benefit from a 12-lead ECG as part of their initial assessment.

If you have already had an ECG performed by your GP or as part of a recent health check, and are able to bring the results to your appointment, it may not be necessary to repeat the test.

The ECG provides an immediate snapshot of the heart's electrical activity and can identify important abnormalities that guide further investigation or reassurance.

Although simple, it remains one of the most valuable first-line tools in cardiology when interpreted in the context of your symptoms and overall clinical picture.

An echocardiogram typically takes around 30 minutes and is usually performed by an experienced cardiac physiologist.

You will lie on your left side while a probe is gently applied to the chest using ultrasound gel. Images of the heart are obtained from multiple angles to assess structure and function in detail.

At times, the scan will assess blood flow across the heart valves, which may produce audible signals from the machine. You may be asked to adjust your position or briefly hold your breath during parts of the study.

The procedure is safe, non-invasive, and generally very comfortable.

Echocardiography is appropriate for a wide range of patients, particularly where there is a need to assess heart structure, valve function, or cardiac performance.

It is commonly used in the evaluation of symptoms such as breathlessness, chest discomfort, palpitations, or murmurs, and forms a key part of many cardiology assessments.

An echocardiogram provides detailed information about the heart's structure and function, including chamber size, wall thickness, valve performance, and overall cardiac function.

It can also identify less common structural abnormalities, such as congenital variations or connections between chambers.

When performed using high-quality equipment and interpreted in the right clinical context, it is one of the most informative and versatile investigations in cardiology.

In selected situations, further specialised echocardiographic techniques may be used.

A bubble contrast echocardiogram involves injecting microbubbles into a vein to assess for abnormal connections within the heart. This is not part of routine imaging but may be relevant in specific cases, such as unexplained stroke or in individuals undergoing assessment for activities such as scuba diving.

A stress echocardiogram assesses how the heart performs under exertion, either through exercise or medication. In our practice, if functional or stress-based imaging is required, we will often favour alternative modalities such as cardiac MRI, depending on the clinical question.

Exercise stress testing is performed under the supervision of both a cardiac physiologist and a consultant cardiologist.

ECG electrodes are placed on the chest and secured to allow stable recording during movement. Blood pressure is measured before the test and at regular intervals throughout.

The test begins at a slow, comfortable pace and increases in stages every few minutes, becoming progressively faster and steeper. It is designed to simulate brisk uphill walking rather than running, with higher levels reached only towards the later stages.

The aim is to increase the heart rate to a predefined target, creating a controlled level of physiological stress. Throughout the test, the ECG and blood pressure are continuously monitored for any changes.

Once the target heart rate is achieved, or the patient reaches their limit, the test is stopped promptly and safely.

Exercise stress testing remains useful in selected situations.

It is commonly used for occupational and licensing assessments, including DVLA and aviation (CAA) requirements. It is also valuable in patients with symptoms that occur specifically during exertion, and as a simple surveillance tool in individuals with known coronary artery disease.

Although no longer a first-line test for many diagnostic pathways, exercise ECG can still provide useful functional information when interpreted in the right clinical context.

When combined with expert supervision and clinical judgement, it offers a straightforward and dynamic assessment of how the heart responds to exertion.

Its value lies not in routine use, but in careful selection.

Traditional monitoring devices, still commonly used in many settings, are reusable systems consisting of a small recording box worn on a strap, with leads attached to the chest via adhesive electrodes. These can be somewhat cumbersome, need to be removed for showering, and may be inconvenient during exercise or sleep.

Modern ECG patch monitors offer a more streamlined alternative. These are typically small, self-contained devices applied directly to the chest, with no external leads. They can record continuously for up to 14 days and are generally comfortable, discreet, and compatible with normal daily activities, including showering and exercise.

Very heavy sweating during exercise can occasionally affect the adhesive, but this is usually manageable.

Ambulatory monitoring is particularly useful for patients with intermittent symptoms such as palpitations, dizziness, or blackouts, where a standard ECG may be normal.

The duration of monitoring is critical. A 24-hour recording is only useful if symptoms occur daily. In most cases, longer monitoring — typically 7 days and often up to 14 days — provides a significantly higher diagnostic yield.

This is especially relevant in the detection of intermittent arrhythmias such as atrial fibrillation, where longer monitoring substantially increases the likelihood of capturing an episode.

The value of ambulatory ECG monitoring lies in matching the duration of recording to the frequency of symptoms.

Short-duration monitoring may appear convenient, but often fails to capture the relevant event, leading to repeated testing and delayed diagnosis. By selecting an appropriate monitoring period from the outset, we are more likely to reach a clear answer efficiently.

This approach avoids the need for sequential escalation of testing and aligns with a broader principle: choosing the right test, for the right duration, first time.

When it comes to ECG patch monitoring, we work in a deliberately modern and patient-centred way.

In many traditional pathways, patients are asked to attend separate appointments to have monitors fitted and then return again for removal. This reflects historical working practices rather than how these devices are designed to be used.

In most cases, we will send the device directly to you by courier. It arrives in a simple package containing everything you need to apply and remove the monitor yourself.

Application is straightforward and supported by clear, step-by-step pictorial instructions. Careful skin preparation is important, as this ensures the device remains secure and provides a clean, reliable recording.

At the end of the monitoring period, the device is placed back in the box and returned via a standard post box.

The recording is then analysed, and the results are reviewed with you at your consultation.

This approach removes unnecessary appointments and simplifies the pathway — a practical example of how we aim to make care more efficient and convenient.

The device is similar to a standard blood pressure monitor, with a cuff worn on the upper arm connected to a small recording unit carried discreetly in a pouch.

Blood pressure is measured automatically at regular intervals throughout the day and night.

While the inflations can be noticeable — particularly during sleep — the test is generally well tolerated and provides valuable information about overall blood pressure patterns.

A single blood pressure reading offers only a snapshot. Ambulatory monitoring provides a more complete picture — including daytime averages, overnight patterns, and overall variability.

This allows for a more accurate diagnosis and helps guide whether treatment is needed, and how best to approach it.

We offer flexibility in how this test is delivered.

In many cases, the device can be sent directly to you, allowing monitoring to take place in your usual environment without the need for additional clinic visits. Alternatively, it can be fitted in clinic if preferred.

This approach simplifies the pathway and reflects our broader aim — making investigation as efficient and convenient as possible.

For patients, a CT scan is typically a quick and straightforward experience.

The scanner is open — often described as a doughnut shape — and the scan itself takes only a few minutes. Claustrophobia is rarely an issue.

A CT coronary angiogram requires a small intravenous cannula (a drip) so that contrast dye can be administered. This allows clear visualisation of the coronary artery walls and the lumen, which is the inside of the vessel. The contrast is very safe, and most patients simply notice a brief warm or flushing sensation during the scan.

Coronary calcium scoring is often cited online and remains useful in selected situations. It detects calcification within the walls of the coronary arteries, which is a marker of established atherosclerosis.

However, calcium scoring is limited in that it cannot visualise the full artery or assess the internal lumen.

A CT coronary angiogram, by contrast, provides a complete view of the artery — including both calcified and non-calcified plaque, as well as any narrowing within the vessel.

In many situations, CT coronary angiography has therefore superseded calcium scoring as the more informative test.

One of the most important — and often overlooked — aspects of cardiac CT is patient preparation.

Image quality is highly dependent on heart rate. Ideally, the heart rate should be at or below 60 beats per minute at the time of scanning. If this is not achieved, images can become blurred or inconclusive.

While medication can be administered on the day to lower the heart rate, this is not always sufficient if the baseline rate is significantly higher.

For this reason, we provide patients with clear pre-scan instructions and, where appropriate, oral beta-blockers in advance. This simple step can make a significant difference — often determining whether the scan provides a definitive answer or remains uncertain.

Cardiac CT requires specialist scanners capable of synchronising image acquisition with the heartbeat. Not all CT machines are able to perform this type of imaging, and there can be significant differences in image quality between older and newer systems.

Not all hospitals will have CT scanners that are truly optimised for cardiac CT. Needless to say, we direct our patients to the best scanners and reporting environments available, so that the study provides the best possible quality diagnostic information.

Within our research network, we were among the first teams in the country to collaborate with Oxford in applying advanced AI-based analysis to cardiac CT imaging.

This includes the use of the Caristo Heart platform, which post-processes high-quality CT scans to generate detailed maps of coronary artery inflammation.

Inflammation is a key early driver of coronary artery disease and can precede the development of visible plaque by many years. By identifying and quantifying this process, we are able to gain additional insight into individual risk and, in some cases, monitor response to treatment.

For selected patients, this can be a valuable adjunct to standard imaging — particularly in the context of elevated cholesterol or where a more detailed understanding of risk is required.

This technology also formed an important part of our NIHR-funded research into coronary artery regression.

CT coronary angiography provides a comprehensive assessment of the coronary arteries — including both the vessel wall and the lumen — allowing detection of both early and more advanced disease.

This represents a significant advance over older approaches and, in many cases, removes the need for invasive angiography or less accurate functional testing.

It is one of the most powerful tools available for predicting long-term cardiovascular risk and guiding preventative strategy.

The key is not simply performing a scan, but selecting the most appropriate one for the clinical question.

In some cases, calcium scoring remains the right first step. In others, a full CT coronary angiogram provides greater clarity and avoids the need for further investigation.

This decision is made in the context of your overall risk profile, symptoms, and clinical goals — ensuring that the investigation chosen will meaningfully inform the next step.

Cardiac MRI is performed within a scanner that uses magnetic fields to generate detailed images of the heart. The test typically takes up to 45 minutes.

During the scan, you will be asked to lie still and follow simple breathing instructions, including short breath-holds at intervals. The team remains in close communication throughout, providing guidance and reassurance.

The scanner is a tunnel-based system, so this is an important consideration for patients who experience claustrophobia.

Cardiac MRI is particularly useful where more detailed assessment of the heart muscle is required.

We commonly use non-stress MRI to evaluate cardiomyopathies and other structural heart conditions, as well as in patients with a history of myocardial infarction.

It is also valuable where echocardiography provides an initial overview but further clarification is needed.

Beyond standard measures of heart function, cardiac MRI offers what is often described as virtual histology — the ability to characterise the tissue of the heart muscle itself.

This allows us to identify areas of scar, inflammation, or infiltration, and to distinguish between irreversibly damaged (non-viable) myocardium and tissue that may still recover with appropriate treatment (viable myocardium).

It also plays an important role in assessing the risk of electrical instability in certain heart muscle conditions.

Stress MRI involves the administration of medication to simulate the effects of exercise by increasing blood flow through the heart.

This allows assessment of whether any coronary artery narrowings are limiting blood supply to specific areas of the myocardium.

In some situations, stress MRI complements CT coronary angiography — particularly where anatomical narrowing has been identified but its functional significance is uncertain.

Cardiac MRI is not used routinely, but selectively — when it is the best investigation to answer a specific clinical question.

In the right context, it provides a level of detail and diagnostic clarity that cannot be achieved with other modalities, helping to guide both diagnosis and long-term management.

We have access to the full range of modern cardiometabolic and lipid investigations.

In addition to standard panels, we may request more detailed analysis of lipid fractions — including apolipoprotein B and lipoprotein(a) — which provide a more precise understanding of cardiovascular risk.

In selected cases, additional markers of inflammation and insulin resistance may also be useful in refining the overall risk profile.

Testing is therefore targeted and additive, rather than routine or repetitive.

Standard lipid profiles provide useful information, but do not always reflect individual cardiovascular risk with sufficient precision.

More detailed markers — such as ApoB and lipoprotein(a) — allow a more nuanced assessment, helping to distinguish between those who may benefit from intervention and those where a more conservative approach is appropriate.

This supports a more personalised and evidence-based strategy, rather than a one-size-fits-all model.

Where possible, we align our investigations with routine NHS blood testing.

In many cases, patients will already have had annual health check bloods performed through their GP, which we can incorporate into our assessment.

This collaborative approach avoids unnecessary duplication and ensures that both routine and advanced testing are used together effectively.

AI-based tools are used to enhance the analysis of complex datasets, helping to identify patterns and extract additional detail that may not be immediately apparent through conventional assessment alone.

These technologies are applied selectively, where they add genuine clinical value.

Artificial intelligence has the potential to transform how cardiovascular disease is detected, characterised, and monitored.

In areas such as coronary imaging and rhythm analysis, it can provide deeper insight into early disease processes and support more precise risk assessment.

These tools are likely to be complementary and revolutionary in terms of the way we work, and we embrace them as they come through.

These tools are complementary to, not a replacement for, clinical judgement.

We incorporate AI where it meaningfully improves diagnostic accuracy or understanding, and continue to adopt new developments as the evidence evolves.

Our focus remains the same: using the best available tools to provide clear, accurate, and clinically relevant answers.