LASER Angioplasty
in Hyderabad

Excimer laser vs standard laser

The excimer laser used in coronary angioplasty (ELCA) operates in the ultraviolet range and works by molecular bond disruption — a cool ablation process that generates minimal heat. This is fundamentally different from thermal lasers used in other medical applications and is specifically designed for safe use inside coronary arteries.

When is LASER angioplasty used?

LASER angioplasty is not a first-line treatment for all blockages — it is a specialised tool selected for specific situations where conventional techniques are insufficient. The main indications are:

1. Severely calcified coronary lesions

The primary indication for ELCA. Heavy circumferential calcification makes balloon expansion impossible or severely limited. LASER ablation modifies the calcium deposits, softening the lesion so that subsequent balloon inflation and stent deployment can be achieved with full expansion. Used either alone or in combination with rotational atherectomy for the most heavily calcified lesions.

2. In-stent restenosis

When scar tissue (neointimal hyperplasia) grows back inside a previously placed stent and re-narrows the artery, LASER ablation vaporises this tissue with precision — removing the restenotic material without damaging the stent struts. Drug-eluting balloons are then typically used after LASER preparation of in-stent restenosis to deliver antiproliferative medication directly into the vessel wall.

3. Undilatable lesions — balloon-resistant blockages

Some lesions resist full balloon expansion even at high pressures — due to calcification, fibrosis, or the nature of the plaque composition. LASER angioplasty can modify these resistant lesions to allow subsequent balloon and stent delivery where standard techniques have failed.

4. CTO crossing facilitation

In selected chronic total occlusions, LASER energy can be used to facilitate wire advancement through the occluded segment when standard CTO wires cannot penetrate the organised fibrous cap of the blockage. This is a niche application used in combination with the hybrid CTO algorithm.

5. Saphenous vein graft (SVG) disease

Bypass grafts performed years earlier can develop diffuse disease and fragile plaque that carries a high risk of distal embolisation during conventional PCI. LASER ablation of SVG lesions reduces this risk by vaporising the friable atherosclerotic material before balloon or stent delivery.

6. Impenetrable lesions and stent under-expansion

When a stent has been placed but fails to expand fully due to underlying calcification — seen on IVUS or OCT — LASER ablation through the stent struts (ELCA through stent) can modify the calcified plaque beneath, allowing the stent to be post-dilated to its intended diameter.

LASER angioplasty vs rotational atherectomy — how is the choice made?

Both LASER angioplasty and rotational atherectomy (rotablation) are plaque modification techniques used for calcified lesions. They are not interchangeable — each has specific strengths and preferred applications:

Dr. Bhishma Chowdary's approach

The choice between LASER angioplasty, rotational atherectomy, or a combination of both is made based on careful review of the angiogram and IVUS/OCT imaging of the calcified lesion before the procedure. Having both capabilities available at AIG Hospitals means the most appropriate technique — or combination — can be selected for each individual lesion.

How is LASER angioplasty performed? Step by step

Before the procedure

• Coronary angiogram and IVUS/OCT imaging reviewed to characterise the lesion — calcium distribution, depth, length, and vessel dimensions.
• Dual antiplatelet therapy (aspirin + ticagrelor or clopidogrel) confirmed to be in place.
• Fasting for 4 to 6 hours. IV access, ECG monitoring, and blood tests completed on admission.
• The appropriate LASER catheter size is selected based on vessel diameter — catheter-to-artery ratio is critical to safe LASER delivery.

During the procedure

1. You lie on the cath lab table with local anaesthesia at the wrist or groin entry site. Conscious sedation keeps you comfortable throughout.
2. Arterial access is established and a guide catheter is positioned at the target coronary artery. A standard angioplasty guidewire is advanced past the lesion.
3. The LASER catheter is tracked over the guidewire to the proximal edge of the lesion. Saline is flushed through the guide catheter to displace blood — blood absorbs laser energy and must be cleared from the field before laser activation.
4. The laser is activated and the catheter is advanced slowly through the lesion at a controlled speed (typically 0.5 mm per second). Multiple passes are performed, progressively ablating the plaque layer by layer. You may feel mild chest discomfort during laser activation — this is transient and normal.
5. After LASER treatment, IVUS or OCT imaging is repeated to assess the result — confirming plaque modification, calcium fracture, and improved lumen size.
6. Balloon angioplasty is then performed with appropriately sized balloons to further expand the lesion. Non-compliant high-pressure balloons may be used to crack residual calcium.
7. One or more drug-eluting stents are deployed to cover the treated segment. Post-dilatation with a non-compliant balloon confirms full stent expansion under IVUS/OCT guidance.
8. Final angiography confirms excellent blood flow (TIMI 3) through the treated vessel with no residual significant narrowing.
9. The catheter and sheath are removed and the entry site is closed.

After the procedure

• Monitored on the cardiac ward for 24 to 48 hours. ECG and vital signs checked regularly.
• Renal function reviewed the following morning — contrast volume in complex procedures is higher than routine PCI.
• Dual antiplatelet therapy (aspirin + ticagrelor or clopidogrel) continued for 12 months after drug-eluting stent placement — as for any complex PCI.
• Discharge typically on day 2 with follow-up at 4 to 6 weeks.

What outcomes can patients expect?

LASER angioplasty is not used in isolation — its purpose is to prepare a difficult lesion so that balloon angioplasty and stenting can be performed with optimal results. When used appropriately as part of a comprehensive approach:

• Successful stent delivery and full expansion is achieved in the vast majority of cases where conventional techniques alone would have been inadequate.
• IVUS-confirmed full stent expansion — the key predictor of long-term stent patency — is significantly improved with LASER lesion preparation compared to balloon-only preparation in calcified arteries.
• In-stent restenosis treated with LASER followed by drug-eluting balloon or stent has excellent long-term results, with restenosis rates well below those seen with balloon-only treatment of restenosis.
• Symptom relief — reduction in angina and improvement in exercise capacity — follows successful revascularisation of previously untreatable calcified lesions.

Why optimal stent expansion matters

An under-expanded stent — one that cannot fully open due to surrounding calcified plaque — has dramatically higher rates of stent thrombosis and restenosis than a fully expanded stent. LASER angioplasty's primary role is to ensure the stent can expand to its intended diameter, which is directly measured by IVUS after deployment. This is why Dr. Bhishma Chowdary routinely uses IVUS guidance alongside LASER in complex calcified PCI.

Frequently asked questions

Is LASER angioplasty the same as regular angioplasty?

No. Regular balloon angioplasty compresses plaque sideways against the artery wall using an inflated balloon. LASER angioplasty vaporises plaque and calcium using ultraviolet light energy — physically removing tissue rather than pushing it aside. LASER is used specifically when the plaque is too calcified or resistant for standard balloon angioplasty to work adequately. In practice, LASER is almost always followed by balloon angioplasty and stenting — it is a lesion preparation step, not a standalone treatment.

Will I feel the laser during the procedure?

You may feel a brief, mild chest discomfort or awareness when the laser is activated — similar to the sensation during balloon inflation in standard angioplasty. This is transient and passes within seconds. You will be awake but relaxed with conscious sedation throughout, and the team communicates with you at every step. Most patients find the experience comparable in comfort to routine angioplasty.

Why is LASER used for in-stent restenosis specifically?

When scar tissue grows inside a previously placed stent, the stent struts are already in the artery wall. Rotational atherectomy cannot be used inside a stent safely — the rotating burr could damage the stent struts. LASER energy, however, can be delivered through the stent openings directly onto the restenotic tissue without damaging the metal stent. This makes excimer LASER the preferred debulking technique for in-stent restenosis, particularly before drug-eluting balloon treatment.

How is LASER different from rotational atherectomy (rotablation)?

Both treat calcified coronary arteries but work differently. Rotational atherectomy uses a spinning diamond-tipped burr to pulverise calcified plaque into micro-particles that are cleared by the circulation. Excimer LASER vaporises plaque through photochemical energy — no mechanical grinding. LASER is preferred for in-stent restenosis, SVG lesions, and tortuous vessels where rotablation is not suitable. For deep medial calcium and circumferential calcium rings, rotablation may be more effective. Dr. Bhishma Chowdary selects the technique based on IVUS/OCT characterisation of each individual lesion.

Is LASER angioplasty safe for elderly patients?

Yes. LASER angioplasty is particularly valuable for elderly patients, who are more likely to have heavily calcified coronary arteries due to age-related vascular changes. The procedure itself carries similar risks to other complex coronary interventions. The benefit — enabling successful stent placement in arteries that would otherwise be untreatable — typically outweighs procedural risk in appropriately selected patients. Dr. Bhishma Chowdary assesses each patient's overall cardiac status, kidney function, and procedural risk before recommending LASER PCI.

How long will I need blood thinners after LASER angioplasty?

Because LASER angioplasty is used in complex lesions where drug-eluting stents are placed, dual antiplatelet therapy — aspirin plus clopidogrel or ticagrelor — is prescribed for 12 months after the procedure, consistent with current guidelines for complex PCI. Aspirin is then continued lifelong. As always, never stop either medication without discussing with Dr. Bhishma Chowdary first — premature discontinuation is the leading cause of stent thrombosis.

I was told my blockage is too calcified to treat. Can LASER angioplasty help?

Possibly, yes. Heavily calcified lesions that have been deemed unsuitable for conventional angioplasty are exactly the cases LASER angioplasty was designed for. If you have been told a blockage cannot be treated due to calcification, an up-to-date angiogram review and IVUS/OCT imaging assessment can determine whether LASER angioplasty — alone or in combination with rotational atherectomy — would make the lesion treatable. Dr. Bhishma Chowdary is happy to review your angiogram and provide an independent assessment.

Why choose Dr. Bhishma Chowdary for LASER angioplasty in Hyderabad?

• Specific expertise in complex calcified PCI — including excimer LASER angioplasty and rotational atherectomy — presented at the national Complex PCI conference
• Routine IVUS and OCT guidance for all complex interventions — ensuring precise lesion characterisation before LASER and optimal stent expansion after
• Both LASER and rotablation available at AIG Hospitals — ability to select and combine techniques based on individual lesion morphology
• Experience in LASER for in-stent restenosis with drug-eluting balloon combination — a niche but important application with limited expertise in Hyderabad
• Full cardiac surgery backup on-site at AIG Hospitals — essential safety infrastructure for complex coronary procedures
• Mechanical circulatory support (Impella, IABP) available for high-risk complex PCI in patients with reduced heart function
• Transparent pre-procedure assessment — realistic discussion of whether LASER, rotablation, or a combination is most appropriate for your specific lesion
• Fluent consultations in English, Hindi, and Telugu

Book a consultation for LASER angioplasty in Hyderabad

If you have been told you have a heavily calcified coronary blockage, an untreatable lesion, or in-stent restenosis — or if you have persistent chest pain despite previous stenting — contact Dr. Bhishma Chowdary at AIG Hospitals, Gachibowli, Hyderabad for a specialist assessment.

Call: +91-9000352998

Email: bhishmachowdary@gmail.com

Location: AIG Hospitals, Gachibowli, Hyderabad — 500032

Clinic hours: Monday to Saturday, 10:00 AM to 4:00 PM

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• Coronary Angioplasty
• Primary Coronary Angioplasty (heart attack treatment)
• CTO-PCI (chronic total occlusion) — /chronic-total-occlusions
• IVUS and OCT (intravascular imaging) — /latest-intravascular-imaging
• Advanced Coronary Physiology — FFR / RFR / IFR — /advanced-coronary-physiology
• Impella / IABP / ECMO (high-risk PCI support) — /impella
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