Introduction: When Breathing Becomes a Daily Struggle

Most of us never think about breathing. It just happens — naturally, effortlessly, without any thought. But for people living with pulmonary hypertension, even walking to the kitchen or climbing a single flight of stairs can leave them gasping for breath.

Pulmonary hypertension is not just “high blood pressure.” It is a specific, serious condition that affects the blood vessels inside the lungs — and it can slowly, silently damage the heart over time if left undiagnosed or untreated.

The difficult truth is that many people in Pakistan are living with this condition without knowing it. The symptoms can be subtle at first — mild breathlessness, occasional fatigue — and are easy to dismiss as signs of getting older or being out of shape.

This guide is for anyone who wants to truly understand pulmonary hypertension — what it is, why it happens, what the warning signs look like, and what treatments are available in Pakistan today. We have written this in plain, easy language because everyone deserves to understand their health — not just doctors.

What is Pulmonary Hypertension?

Let us start with the basics.

The word “pulmonary” refers to the lungs. “Hypertension” means high blood pressure. So pulmonary hypertension — often shortened to PH — means high blood pressure specifically inside the blood vessels of the lungs.

Here is how it works in simple terms:

Normally, blood flows easily from the heart into the lungs, picks up oxygen, and returns to the heart to be pumped out to the rest of the body. The pressure inside the lung vessels during this process is naturally low — the heart does not need to work very hard.

In pulmonary hypertension, the blood vessels inside the lungs become narrow, stiff, or partially blocked. Blood has a harder time flowing through. Pressure builds up. And the right side of the heart — which is responsible for pushing blood into the lungs — has to work much harder than it was designed to.

Over months and years, that extra effort weakens the right side of the heart. And a weakened heart eventually struggles to keep up with the body’s needs.

Primary vs Secondary Pulmonary Hypertension

Doctors classify pulmonary hypertension in two broad ways:

1. Primary pulmonary hypertension — also called idiopathic — means the condition develops on its own with no clear identifiable cause. This type is less common but can be more difficult to treat.
2. Secondary pulmonary hypertension — meaning it develops as a result of another underlying condition, such as heart disease, lung disease, or blood clots. This is the more common form and treatment often focuses on managing the root cause.

The Five Types of Pulmonary Hypertension

Pulmonary hypertension is not one single disease. Medical experts have divided it into five groups based on the underlying cause. Understanding which group you fall into matters a great deal because the treatment approach is very different for each.

Group 1 — Pulmonary Arterial Hypertension (PAH)

This is what most people picture when they hear “pulmonary hypertension.” In PAH, the tiny arteries inside the lungs become narrowed, thickened, or blocked. Blood simply cannot flow through easily, and pressure builds rapidly.

PAH can occur on its own (idiopathic), run in families (heritable), or be linked to conditions like HIV, liver disease, certain heart defects, or connective tissue diseases like scleroderma and lupus.

This group is treated with targeted medications specifically designed to open up the blood vessels in the lungs — including Sildenafil (Viagra) and Tadalafil (Cialis), which were originally developed for other purposes but have proven highly effective for PAH.

Group 2 — Pulmonary Hypertension Due to Left Heart Disease

In this group, the problem starts on the left side of the heart. When the left side of the heart is not pumping properly — due to heart failure or a damaged heart valve — blood backs up into the pulmonary vessels, raising the pressure there.

This is actually the most common form of pulmonary hypertension overall. Treatment in this group focuses primarily on fixing the underlying heart problem rather than directly treating the lung vessels.

Group 3 — Pulmonary Hypertension Due to Lung Disease

Chronic lung conditions — especially COPD (chronic obstructive pulmonary disease) and interstitial lung disease — can damage the lung tissue and reduce the amount of oxygen in the blood. When oxygen levels drop, the blood vessels in the lungs automatically constrict. Over time this raises the pressure.

Oxygen therapy is central to managing this group. In some carefully selected patients, medicines like Sildenafil may be used off-label, though the evidence is still being studied.

Group 4 — Chronic Thromboembolic Pulmonary Hypertension (CTEPH)

This type develops from old blood clots that have not dissolved properly. Instead of being broken down by the body, these clots become scar tissue that permanently blocks major arteries in the lungs.

CTEPH is one of the few types of pulmonary hypertension that can potentially be cured with surgery — a procedure called pulmonary thromboendarterectomy, which physically removes the clot material from the arteries. A medicine called Riociguat is also specifically approved for this type.

Group 5 — Miscellaneous Causes

This group covers pulmonary hypertension linked to conditions that do not fit neatly into the other four categories — such as blood disorders, metabolic diseases, or other systemic illnesses. Treatment varies widely depending on the specific cause.

What Causes Pulmonary Hypertension?

Several different factors and conditions can lead to pulmonary hypertension. Here is a clear breakdown:

Medical Conditions That Can Cause PH

• Left heart disease — heart failure and valve problems are the most common causes overall
• Chronic lung diseases — especially COPD, emphysema, and pulmonary fibrosis
• Blood clots in the lungs — particularly when clots do not fully dissolve (CTEPH)
• Connective tissue diseases — such as lupus, scleroderma, and rheumatoid arthritis
• Congenital heart defects — heart abnormalities present from birth
• HIV infection — can directly affect the pulmonary blood vessels
• Liver disease — particularly cirrhosis
• Sleep apnea — repeated drops in oxygen during sleep can affect lung vessel pressure over time

Risk Factors to Be Aware Of

Even without a specific disease, some factors increase the likelihood of developing pulmonary hypertension:

• Family history — certain genetic mutations make PH more likely to run in families
• Female sex — women are diagnosed with idiopathic PAH more often than men, though men tend to have worse outcomes
• Age — risk increases with age, though PH can affect people of all ages including young adults
• Obesity — excess body weight puts strain on the heart and lungs
• Smoking — damages blood vessels throughout the body, including the lungs
• Living at high altitude — lower oxygen levels at altitude can contribute to PH over time
• Certain medications — some appetite suppressants and stimulants have been linked to PAH

Symptoms — What Pulmonary Hypertension Feels Like

This is where pulmonary hypertension becomes particularly tricky. The early symptoms are vague and easy to explain away. Many people live with PH for months or even years before it is properly diagnosed.

Early Symptoms (Often Dismissed or Ignored)

• Shortness of breath during activity — at first, you only feel breathless when doing something physically demanding. Many people put this down to being unfit or tired.
• Unusual fatigue — feeling exhausted after activities that used to feel easy. Not the normal tiredness after a long day — a deeper, heavier kind of fatigue.
• Mild dizziness — occasional lightheadedness, especially with exertion.

Symptoms as the Condition Progresses

As pulmonary hypertension advances and the heart comes under greater strain, the symptoms become harder to ignore:

• Shortness of breath at rest — breathing becomes difficult even when you are sitting still or lying down
• Chest pain or pressure — a tightening or heaviness in the chest, especially during physical activity
• Heart palpitations — a racing, fluttering, or irregular heartbeat
• Fainting or near-fainting episodes — particularly during or just after physical activity, when the heart cannot pump enough blood to the brain
• Swelling in the ankles, legs, or abdomen — fluid accumulates as the heart struggles to keep up
• Bluish tint to the lips or fingertips — a sign that oxygen levels in the blood are significantly low

When to Go to the Doctor Right Away

Do not wait if you experience any of the following:

• Sudden severe shortness of breath at rest
• Chest pain with breathlessness
• Fainting or blacking out
• Rapid worsening of swelling in the legs or abdomen

These can indicate that the condition is reaching a critical point and immediate medical attention is needed.

How is Pulmonary Hypertension Diagnosed?

Because the early symptoms of PH overlap with so many other conditions — asthma, anxiety, anaemia, general deconditioning — the diagnosis is often delayed. Here is how doctors work through the process:

Step 1 — Medical History and Physical Examination

Your doctor will ask about your symptoms, how long you have had them, any family history of heart or lung disease, and any medications you take. They will listen to your heart and lungs with a stethoscope for abnormal sounds.

Step 2 — Initial Tests

• Echocardiogram — an ultrasound of the heart. This is usually the first test ordered when PH is suspected. It gives a picture of how the heart is working and can estimate the pressure inside the pulmonary arteries.
• Chest X-ray — can show an enlarged heart or changes in the lung blood vessels.
• ECG (electrocardiogram) — records the electrical activity of the heart and can detect strain on the right side.
• Blood tests — to check for underlying conditions like lupus, HIV, thyroid problems, or blood clotting disorders.
• Pulmonary function tests — breathing tests that assess how well the lungs are working.

Step 3 — Confirming the Diagnosis

• CT pulmonary angiogram — a detailed scan of the blood vessels in the lungs, especially useful for detecting clots (CTEPH).
• Right heart catheterization — this is the gold standard test for confirming pulmonary hypertension. A thin tube is inserted into the right side of the heart and into the pulmonary artery to directly measure the pressure. It is the only way to confirm PH with certainty and is essential before starting treatment.
• Ventilation-perfusion (V/Q) scan — a nuclear medicine scan used to detect blood clots in the lungs.

Treatment Options Available in Pakistan

There is no one-size-fits-all treatment for pulmonary hypertension. The approach depends on which group or type you have, how severe the condition is, and what other health issues you may have. The good news is that treatment options have improved significantly over the past two decades.

Lifestyle Changes — The Foundation of Management

Before any medication, lifestyle plays a crucial role:

• Avoid strenuous activity that causes breathlessness or chest discomfort — but do not be completely inactive. Gentle, supervised activity can actually help.
• Avoid high altitudes — flying in unpressurised aircraft or travelling to very high-altitude areas can worsen symptoms.
• Quit smoking — if you smoke, stopping is one of the most important steps you can take for your lung and heart health.
• Limit salt intake — reducing salt helps manage fluid retention and swelling.
• Avoid pregnancy — pregnancy carries very high risks for women with pulmonary hypertension and requires specialist guidance.
• Stay up to date with vaccinations — especially flu and pneumonia vaccines, as respiratory infections can be very dangerous.

Medications Used to Treat Pulmonary Hypertension

Phosphodiesterase-5 (PDE5) Inhibitors These are among the most commonly used medicines for PAH. They work by relaxing and widening the blood vessels in the lungs, reducing the pressure and making it easier for the heart to pump.

• Sildenafil (Viagra) — widely used for PAH and generally well tolerated. Available in Pakistan.
• Tadalafil (Cialis) — longer-acting and can be taken once daily. Also available in Pakistan.

Endothelin Receptor Antagonists These block a chemical called endothelin that causes blood vessels to narrow. Examples include Bosentan and Ambrisentan. They are taken as daily tablets and are effective for PAH.

Prostacyclin Analogues These medicines mimic a natural substance in the body that relaxes blood vessels. They include Epoprostenol (given by continuous IV infusion) and Iloprost (inhaled). These are typically reserved for more severe cases.

Riociguat A medicine that stimulates a different pathway to relax blood vessels. It is specifically approved for both PAH and CTEPH.

Calcium Channel Blockers Only suitable for a small group of PAH patients who respond positively to a specific test called vasoreactivity testing. Not appropriate for all patients.

Anticoagulants (Blood Thinners) Used particularly in CTEPH to prevent further clot formation. Warfarin and newer oral anticoagulants may be prescribed.

Diuretics Help the body remove excess fluid, reducing the swelling in the legs and abdomen that often accompanies advanced PH.

Oxygen Therapy Used when blood oxygen levels are low — particularly common in Group 3 (lung disease-related) PH. Some patients need oxygen only during sleep or activity; others may need it continuously.

Advanced and Surgical Options

For patients whose condition is severe or not responding to medications:

Pulmonary Thromboendarterectomy (PTE Surgery) A surgical procedure that physically removes clot material from the major lung arteries. It is the only potential cure for CTEPH and can dramatically improve symptoms and life expectancy.

Atrial Septostomy A procedure where a small hole is created between the two upper chambers of the heart. This can relieve pressure on the right side of the heart in severe cases, though it is used only in specific situations.

Lung Transplantation For patients with very advanced PH who no longer respond to any other treatment, lung or heart-lung transplantation may be considered as a last resort.

Living With Pulmonary Hypertension — Practical Day-to-Day Advice

A diagnosis of pulmonary hypertension is life-changing. But thousands of people around the world — and many in Pakistan — are living well with this condition by making smart adjustments and staying consistent with their treatment.

Managing Energy Wisely

One of the most practical skills people with PH develop is learning to pace themselves. This means planning activities thoughtfully, building in rest periods, and not pushing through breathlessness.

Break tasks into smaller parts. Rest before you feel exhausted, not after. Ask for help with physically demanding tasks — this is not weakness, it is smart management.

Eating for Heart and Lung Health

• Focus on whole foods — vegetables, fruits, whole grains, lean proteins
• Reduce salt significantly — excess salt causes fluid retention which worsens swelling and puts extra strain on the heart
• Stay hydrated but be mindful of fluid intake if your doctor has advised limits
• Avoid large heavy meals — they can make breathlessness worse; smaller, more frequent meals are easier on the body

Emotional Health Matters Too

Living with a chronic illness is mentally and emotionally draining. Anxiety, depression, and fear are common among people with PH — and completely understandable. Acknowledging these feelings rather than suppressing them is important.

Consider speaking with a counselor or psychologist familiar with chronic illness. Many people find that joining a support group — even online — gives them a sense of community and practical advice from people who truly understand their daily reality.

Monitoring Your Symptoms

Keep a simple diary or notes on your phone tracking:

• How breathless you feel on a scale of 1 to 10 each day
• Any new symptoms or changes
• How far you can walk before feeling breathless
• Your weight — a sudden gain of 2 kg or more in a day or two can indicate fluid retention and should be reported to your doctor.

Complications If Left Untreated

If pulmonary hypertension is not diagnosed and managed, it can lead to serious complications over time:

Right heart failure — the most serious and common complication. The right ventricle enlarges and eventually loses its ability to pump effectively.

Arrhythmias — irregular heart rhythms develop as the heart muscle is damaged by ongoing strain. These can cause palpitations, fainting, and in severe cases can be life-threatening.

Blood clots — people with PH are at higher risk of developing clots in the lung vessels, which can worsen symptoms significantly.

Low oxygen levels — chronically low oxygen in the blood affects the brain, kidneys, and other organs over time.

Sudden death — in severe, untreated pulmonary hypertension, the risk of sudden cardiac events is elevated.

This is why early diagnosis and consistent treatment genuinely matters. The earlier PH is identified and managed, the better the long-term outlook.

Prevention — What You Can Do

While not all forms of pulmonary hypertension can be prevented — particularly those caused by genetic factors — there is a great deal you can do to reduce your overall risk and slow progression if you are already diagnosed.

• Quit smoking — smoking damages blood vessels throughout the body and worsens lung function significantly
• Maintain a healthy weight — obesity puts direct strain on the cardiovascular system
• Manage chronic conditions well — if you have diabetes, sleep apnea, heart disease, or autoimmune conditions, keeping them well-controlled significantly reduces your PH risk
• Stay active within your limits — regular gentle movement supports cardiovascular health
• Get regular health check-ups — especially if you have risk factors. Many cases of PH are caught during investigations for other conditions.
• Take medications as prescribed — if you are on treatment for PH or conditions linked to it, consistency matters more than almost anything else

Frequently Asked Questions About Pulmonary Hypertension in Pakistan

1. What is the difference between pulmonary hypertension and regular high blood pressure? Regular high blood

pressure (hypertension) affects blood vessels throughout the entire body. Pulmonary hypertension specifically affects only the blood vessels inside the lungs. They are separate conditions that require different treatments.

2. Can pulmonary hypertension be cured?

For most types, PH cannot be completely cured but it can be effectively managed with the right treatment. The exception is CTEPH — pulmonary hypertension caused by old blood clots — which can potentially be cured with surgery.

3. Is pulmonary hypertension common in Pakistan?

The exact numbers in Pakistan are not well documented, but pulmonary hypertension related to heart disease and lung disease is certainly present here given how common those conditions are. Awareness among the general public remains low.

4. Can Viagra (Sildenafil) really treat a lung condition?

Yes — this surprises many people. Sildenafil and Tadalafil were originally developed for other uses but were found to relax blood vessels in the lungs. They are now medically approved treatments for pulmonary arterial hypertension (PAH) and are prescribed regularly for this purpose worldwide, including in Pakistan.

5. Is pulmonary hypertension hereditary?

Some forms, particularly heritable PAH, are linked to genetic mutations that can run in families. If a close family member has been diagnosed with idiopathic or heritable PAH, it is worth discussing genetic screening with a specialist.

6. Can women with pulmonary hypertension get pregnant?

Pregnancy carries very serious and potentially life-threatening risks for women with pulmonary hypertension. This is not a decision to take lightly. Any woman with PH who is considering pregnancy must have an in-depth discussion with a specialist team before doing so.

7. What specialist should I see for pulmonary hypertension in Pakistan?

A cardiologist or pulmonologist (lung specialist) is the right starting point. Ideally, you want someone with experience in PH specifically, as it is a complex condition. Major teaching hospitals in Karachi, Lahore, and Islamabad have specialist units that manage this condition.

8. How fast does pulmonary hypertension progress?

This varies widely between individuals and depends on the type of PH, the underlying cause, and how early treatment is started. Some people remain stable for many years with good treatment. Others progress more quickly. Regular monitoring by a specialist is essential.

9. Can exercise help or hurt pulmonary hypertension?

Gentle, supervised exercise can actually improve exercise tolerance and quality of life in PH patients. Strenuous exercise that causes significant breathlessness or chest pain should be avoided. Always discuss with your doctor before starting any exercise programme.

10. Where can I learn more and find support in Pakistan?

Talk to your doctor or specialist first. For reliable health information and to find related medicines and wellness products available in Pakistan, visit sehatnama.pk.

Conclusion: Understanding PH is the First Step Toward Managing It

Pulmonary hypertension is a serious condition — but it is not hopeless. Over the past two decades, treatment options have improved dramatically. People who might once have had very limited options now have access to effective medications, better surgical techniques, and improved monitoring tools.

The key is getting diagnosed early and starting treatment before the heart suffers too much damage. That means not ignoring persistent breathlessness, unexplained fatigue, or swelling in the legs. It means going to the doctor even when you are tempted to put it off.

If you or someone you care about has been diagnosed with pulmonary hypertension — or if you are concerned about symptoms that might point toward it — the most important thing you can do is get proper medical assessment and stay consistent with treatment.

Medical Disclaimer:

This article is written for general informational and educational purposes only. It does not constitute medical advice and should not replace a consultation with a qualified doctor or healthcare professional. If you believe you have symptoms of pulmonary hypertension or any other medical condition, please seek professional medical evaluation promptly. Sehatnama.pk does not diagnose, prescribe, or directly dispense medication.