Why People with Diabetes or High BP May Need an Echo

In brief

H1: Why people with diabetes or high BP may need an echo In brief

Diabetes and high blood pressure can change the heart muscle years before any symptoms.
An echo is a painless ultrasound that shows how the heart pumps and relaxes.
Strain imaging can pick up early heart muscle changes even when the standard echo looks normal.
Finding changes early allows firmer control of BP, sugar and cholesterol to protect the heart.
Not everyone needs an echo; your doctor decides based on your history and examination.

The silent effect on the heart

High blood pressure makes the heart pump against extra force, day after day. Over years, the main pumping chamber thickens and becomes stiffer. Diabetes adds its own effects on the heart muscle and small blood vessels. Together, they are among the most common causes of heart failure.

The difficulty is that these changes are usually silent. A person can feel completely well, walk to the market and climb stairs, while the heart is already working under strain.

Stage B: the stage before symptoms

Doctors describe heart failure in stages. Stage A means risk factors such as diabetes or high BP are present, but the heart is normal. Stage B means the heart has changed in structure or function, but there are no symptoms yet. Stage C is when symptoms appear.

Stage B is important because it is a window. Treatment at this stage aims to stop the heart from moving on to symptoms.

A 2025 study in the Indian Heart Journal, co-authored by Dr. Tamoghna Das, looked at 227 adults having routine echocardiography at a referral centre in North India. About half met the criteria for stage B heart failure, and reduced heart muscle strain was one of the most common findings. These results suggest that early heart changes may be more common than expected in everyday practice.

What an echo shows

Echocardiography images with Doppler measurements on the screen of the echo system at Medcare

An echocardiogram uses sound waves to show:

how strongly the heart pumps (ejection fraction)
how well it relaxes and fills between beats
thickness of the heart walls
size of the heart chambers
how the valves open and close
pressure in the lungs

It takes about 20 to 40 minutes, needs no fasting and uses no radiation.

What strain imaging adds

A standard echo can look normal while the heart muscle is already struggling. Strain imaging, also called speckle tracking, measures how well the muscle fibres shorten and stretch. Reduced strain can be an early sign of heart muscle stress, even when the ejection fraction is still normal.

What this means for you.

if strain imaging shows early changes, it does not mean you have heart failure with symptoms. It means your heart needs firmer protection: tighter BP control, good sugar control, cholesterol treatment, weight care and stopping tobacco.

Who may benefit from an echo

Dr. Das may suggest an echo if you have:

diabetes for several years, especially with high BP, kidney disease or high cholesterol
high BP for a long time, or BP that is hard to control
breathlessness, swelling of the feet, palpitations or reduced exercise ability
an abnormal ECG or a heart murmur
obesity with sleep apnea

The decision is made after a consultation, based on your own risks.

FAQs

I have diabetes but no heart symptoms. Do I need an echo?

Not everyone does. An echo is most useful when diabetes has been present for several years, especially with high BP, kidney disease, high cholesterol or obesity, or if you have any symptoms. Dr. Das decides after examining you and reviewing your risks.

What does a normal ejection fraction mean?

It means the main pumping chamber is pushing out a normal share of blood with each beat, usually 55% or more. It does not rule out all heart problems. The heart can be stiff or under strain with a normal ejection fraction, which is why relaxation and strain are also checked.

If my echo shows stage B changes, what happens next?

Treatment focuses on protecting the heart: firm BP control, sugar and cholesterol management, weight care, stopping tobacco and regular activity. Some medicines that protect the heart may be added. A repeat echo after some time shows whether the heart is stable or improving.

How often should the echo be repeated?

It depends on the findings. A normal echo may not need repeating for some years unless symptoms appear. If changes are found, a repeat may be advised after 6 to 12 months. Dr. Das will tell you what suits your situation.