Best Hospital for Flow Diverter Surgery in Hyderabad

Advanced Flow Diverter Surgery

A flow diverter is a high-density braided mesh stent used within the parent artery at the aneurysm neck. Unlike filling the aneurysm directly like coiling the flow diverter is placed inside the main blood vessel to redirect blood flow away from the aneurysm. Over time this reduces pressure inside the aneurysm allowing it to clot and gradually seal off naturally.

The device also helps the blood vessel heal by supporting the growth of new tissue across the weakened area. Flow diverter stents are commonly used for larger, complex or difficult-to-treat aneurysms and provide a minimally invasive alternative to open surgery in selected patients. Rather than treating the aneurysm sac, the device treats the parent artery.

Who Needs a Flow Diverter?

Flow diverters are indicated for aneurysms anatomically unsuitable for coiling or clipping, or where prior treatment has failed:

• Large (10 to 25 mm) and giant (greater than 25 mm) ICA aneurysms
• Wide-necked aneurysms (dome-to-neck ratio below 1.5 or neck width above 4 mm)
• Fusiform and dissecting aneurysms 
• Recurrent aneurysms after coiling or clipping, flow diverter addresses the residual sac without repeat coiling
• Blister aneurysms and carotid-ophthalmic or paraclinoid segment aneurysms that are difficult to treat conventionally.

Best Flow Diverter Surgery Doctors in India

Select Location Hyderabad Visakhapatnam Bhubaneswar Nagpur Raipur Indore Aurangabad Clinics & Medical Centers

Select Hospital CARE Hospitals, Banjara Hills, Hyderabad CARE Hospitals Outpatient Centre, Banjara Hills, Hyderabad CARE Hospitals, HITEC City, Hyderabad CARE Hospitals, Nampally, Hyderabad Gurunanak CARE Hospitals, Musheerabad, Hyderabad CARE Hospitals, Bhubaneswar Ganga CARE Hospital Limited, Nagpur Ramkrishna CARE Hospitals, Raipur CARE Hospitals, Ramnagar, Visakhapatnam CARE Hospitals Outpatient Centre, HITEC City, Hyderabad CARE Hospitals, Malakpet, Hyderabad CARE CHL Hospitals, Indore United CIIGMA Hospitals (A unit of CARE Hospitals), Chh. Sambhajinagar CARE Hospitals, Health City, Arilova CARE Medical Center, Tolichowki, Hyderabad

• 

  Dr. Alok Kumar Udiya

  Sr. Consultant

  Interventional Radiology

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• 

  Dr. Amol Lahoti

  Consultant

  Interventional Radiology

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• 

  Dr. K. Chinmaya Deepak Patro

  Senior Consultant

  Interventional Radiology

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• 

  Dr. KSV Surya Teja Reddy

  Consultant Interventional Neuroradiologist & Interventional Radiologist

  Interventional Neuroradiology & Interventional Radiology

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• 

  Dr. Rajesh Poosarla

  Sr. Consultant Neuro and Interventional Radiologist

  Interventional Radiology

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• 

  Dr. Vivek Jaju

  Consultant

  Interventional Radiology

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Symptoms of Brain Aneurysm

Most intracranial aneurysms are asymptomatic until rupture or mass effect produces symptoms:

• Unruptured - from compression:
  • Headache behind or above the eye
  • Third cranial nerve palsy (ptosis, diplopia, fixed dilated pupil) from posterior communicating artery aneurysm
  • Visual field defects or progressive visual loss from optic chiasm compression
• Ruptured - subarachnoid haemorrhage:
  • Thunderclap headache feels sudden, maximal-intensity, reaching peak within seconds; nausea, vomiting, photophobia, and neck stiffness (meningism)
  • Loss of consciousness, focal neurological deficit, or seizure at onset.

Causes of Brain Aneurysm

Brain aneurysms usually develop when a weak area in the wall of a brain artery gradually bulges outward over time. These weak points are most commonly found where blood vessels branch inside the brain (circle of Willis). Common contributing factors are:

• Congenital tunica media deficiency at bifurcation points
• Hypertension is the most modifiable causative factor
• Atherosclerosis 
• Connective tissue disorders (ADPKD, Ehlers-Danlos type IV, Marfan syndrome)
• Mycotic aneurysms from infective endocarditis
• Flow-related aneurysms from abnormal haemodynamic stress on AVM feeding arteries.

Risk Factors of Flow Diverter Treatment

Risk factors for both the underlying aneurysm and the flow diverter procedure:

• Uncontrolled hypertension accelerates aneurysm growth and rupture risk
• Smoking carries two to three times the rupture risk of non-smokers
• Irregular use of blood-thinning medicines is the leading risk factor for in-stent thrombosis
• Resistance to antiplatelet medicines
• A giant aneurysm size (greater than 25 mm) carries a higher procedural stroke risk
• Aneurysms in difficult brain locations have a higher procedural risk

Complications of Flow Diverter Treatment

Flow diversion carries a distinct complication profile from conventional coiling:

• Thromboembolic stroke 
• Blood clot formation inside the stent
• Bleeding or aneurysm rupture
• Incomplete occlusion
• Side effects from blood-thinning medications like increased bleeding or bruising
• Access site complications like bleeding, swelling, or bruising
• Mass effect from thrombosing sac - inflammatory swelling transiently worsens cranial nerve compression in giant aneurysms before resolution.

Diagnosis Before Flow Diverter Treatment

Pre-procedural planning is critical the flow diverter must be precisely sized and positioned.

Investigations are:

• CT Angiography (CTA): Defines aneurysm size, neck morphology, parent artery diameter, and branch vessels
• MR Angiography (MRA): Preferred for screening at-risk patients
• Digital Subtraction Angiography (DSA) with 3D rotational angiography: Provides the highest resolution of neck anatomy and parent artery dimensions essential for device sizing
• Platelet function testing: Determines antiplatelet adequacy and strategy
• Blood tests: Renal function, coagulation, FBC, and HbA1c are performed before the procedure. 

Flow Diverter Procedure

Performed under general anaesthesia. Dual antiplatelet therapy is commenced 5 to 7 days before, with platelet function testing to confirm adequate inhibition.

Procedure steps are:

• Catheter Insertion: The surgeon inserts a small catheter through an artery in the groin or wrist to provide access for the entire procedure.
• Navigation to the Brain: Using continuous imaging guidance the catheter is carefully advanced through the internal carotid or vertebral artery.
• Diagnostic Angiography: Detailed angiographic imaging is performed to assess the size, shape and location of the aneurysm & to map the surrounding arteries before any device is deployed.
• Stent Positioning: The surgeon positions the specialised flow diverter stent precisely across the neck of the aneurysm rather than inside the aneurysm sac itself. 
• Confirmation Imaging: Final angiographic imaging confirms that the stent is correctly positioned and that blood flow through the surrounding vessels is healthy and unobstructed.

The procedure usually takes 60 to 120 minutes. Patients are monitored closely after the procedure, with attention to neurological status, blood pressure and overall recovery progress.

Benefits of Flow Diverter Treatment

Benefits are:

• Treats previously untreatable aneurysms like large, giant, fusiform, and recurrent cases in a single device deployment
• Reduce the risk of aneurysm rupture and re-bleeding
• High occlusion rates - superior to coiling alone for large and wide-necked aneurysms
• No open skull surgery needed 
• The device maintains the vessel lumen and covered perforators remain patent in the majority.

When to See a Doctor

Certain presentations require emergency assessment:

• Thunderclap headache (sudden, maximal-intensity, peak within seconds)
• Sudden double vision or drooping eyelid 
• Progressive visual loss or field defect 
• Any sudden focal neurological deficit even if transient
• Sudden loss of consciousness or new-onset seizure

Known aneurysm patients should seek earlier review if headache pattern changes or neurological symptoms develop. 

Conclusion

Flow diversion is the most significant advance in endovascular aneurysm treatment. By redirecting blood flow away from the aneurysm the procedure allows the weakened blood vessel to heal gradually while reducing the rupture and bleeding risk. It is especially useful for large, wide-necked or difficult-to-treat aneurysms that may not be suitable for conventional coiling or clipping. Careful patient selection, structured angiographic follow-up, experienced neurointerventional teams, and regular follow-up are non-negotiable. Second-generation devices continue to expand the treatable anatomy. Early referral to a neurovascular centre with established flow diversion experience determines the options available.