Coronary Angiography
Diagnostic Cardiology

Coronary Angiography in Navi Mumbai

Everything you need to know — the procedure, preparation, what results mean, and when you need it — explained by your Interventional Cardiologist.

Clinical Author: Dr. Amit Singh, FACCCenter: Kokilaben Dhirubhai Ambani HospitalMedical Review: May 2026
Anatomy & Technology

What Is Coronary Angiography?

A detailed explanation of the gold-standard diagnostic test for coronary artery disease — how it works, what it shows, and why it is the definitive test for coronary blockages.

What Is Coronary Angiography?

Coronary angiography — also called cardiac catheterisation or coronary arteriography — is a diagnostic imaging procedure that allows the cardiologist to examine the coronary arteries directly. It works by injecting a radiopaque contrast dye into the coronary circulation and capturing real-time X-ray images (called fluoroscopy) as the dye flows through each artery. Any narrowing, blockage, or abnormality in the vessel becomes immediately visible. The coronary arteries are three main vessels — the left anterior descending (LAD), the left circumflex (LCX), and the right coronary artery (RCA) — that deliver oxygenated blood to the entire heart muscle. When any of these arteries become narrowed due to atherosclerotic plaque buildup, the heart muscle downstream is deprived of oxygen, producing symptoms ranging from exertional chest pain (angina) to a heart attack.

95%+

Diagnostic accuracy of coronary angiography for significant CAD

ACC/AHA Guidelines
30–60 min

Typical procedure duration for diagnostic angiography

Standard clinical practice
<0.1%

Major complication rate at experienced interventional centres

ESC Guidelines 2023
Clinical Indications

Why Is Coronary Angiography Needed?

The clinical scenarios in which coronary angiography is indicated — from emergencies to elective assessments.

Clinical ScenarioReason for AngiographyUrgency Status
Heart attack (STEMI or NSTEMI)Identify and treat the blocked artery immediately (primary PCI)Emergency
Unstable anginaRisk-stratify and define coronary anatomy before further deteriorationUrgent (24–72 hr)
Stable angina despite medicationAssess severity and decide between continued medical therapy, PCI, or CABGElective
Positive stress test (TMT/MIBI)Confirm ischaemia and define its anatomical causeElective
Pre-operative cardiac assessmentEvaluate coronary status before major non-cardiac surgeryElective
New heart failure with unknown causeExclude ischaemic aetiology as the cause of reduced pump functionElective
Valvular heart disease (pre-surgery)Assess co-existing coronary disease before valve repair or replacementElective

A cardiologist will recommend coronary angiography when there is a high suspicion of significant coronary artery disease, or when non-invasive tests have returned inconclusive or abnormal results. The procedure provides information that cannot be obtained in any other way: the precise anatomy of each coronary artery, the exact location and degree of narrowing, and whether the blockage is amenable to treatment by angioplasty or requires bypass surgery.

Vascular Safety

The Radial Approach: Why It Matters

Radial (wrist) versus femoral (groin) access — the evidence behind the preference at Heartwise Cardiology.

Feature AssessedRadial (Wrist) ApproachFemoral (Groin) Approach
Access siteRadial artery at the wristFemoral artery in the groin
Bleeding risk73% lower major bleeding (RIVAL trial)Higher risk of access-site haematoma
Post-procedure mobilityCan sit and walk immediatelyBed rest required for 4–6 hours
Same-day dischargeRoutinely possibleLess common
Patient comfortSignificantly higherModerate
Radial artery spasm, previous radial procedures, abnormal Allen's test, or need for large-bore access
Preparation Checklist

How to Prepare for Coronary Angiography

Proper preparation is essential for a safe procedure. Follow these steps before your angiography.

Fast for 4–6 hours before the procedure. Clear fluids (water, plain tea without milk) are permitted up to 2 hours prior.
Disclose all medications, especially blood thinners (aspirin, clopidogrel, ticagrelor, warfarin, rivaroxaban, apixaban) — your cardiologist will advise which to continue or pause.
Stop metformin 24–48 hours before if you are diabetic, to reduce the risk of contrast-induced nephropathy.
Inform about contrast allergy or kidney disease — pre-medication with antihistamines and steroids may be required if you have a documented dye allergy.
Pre-procedure blood tests: full blood count, kidney function (creatinine), coagulation profile, blood group, and a 12-lead ECG will be done.
Arrange a companion: you will not be permitted to drive for 24 hours after the procedure. A family member or friend must accompany you.
Wear comfortable, loose clothing. Leave jewellery and valuables at home. You will change into a hospital gown before the procedure.
Cath Lab Workflow

What Happens During Coronary Angiography?

A step-by-step walkthrough of the angiography procedure — from arrival in the Cath Lab to recovery.

01

Arrival and Preparation (30–45 min before)

An intravenous (IV) cannula is placed in your arm. You are connected to continuous ECG monitoring and pulse oximetry. Local anaesthetic cream is applied to the wrist. The access site is cleaned and draped in a sterile manner.

02

Local Anaesthesia and Arterial Access

Local anaesthetic (lignocaine) is injected at the wrist. A small needle punctures the radial artery, through which a thin guidewire and then a plastic sheath (introducer) is placed. You will feel mild pressure but no sharp pain at this point.

03

Catheter Advancement to the Heart

A thin, flexible catheter (approximately 2–2.5 mm in diameter) is gently advanced through the sheath, along the arterial system, and up into the aorta to the heart. There are no pain nerves inside the blood vessels, so you will feel no pain during this step.

04

Contrast Injection and X-ray Imaging

The catheter tip is engaged at the opening of each coronary artery. A small volume of contrast dye is injected while X-ray images are captured in multiple projections (angles). When contrast is injected, you may feel a brief warm, flushing sensation — this is normal and harmless and passes within seconds.

05

Left Ventriculogram (If Required)

In some cases, the cardiologist will also inject contrast into the left ventricle (the main pumping chamber) to assess its function and contractility. This produces a more intense warm flush sensation, which is temporary.

06

Sheath Removal and Haemostasis

Once the imaging is complete, the catheter and sheath are removed. For radial access, a small patent haemostasis device (wristband) is applied to compress the puncture site. You will wear this for 2–3 hours. There are no stitches required.

07

Recovery and Results Discussion

After a 2–4 hour observation period in the recovery area, your cardiologist will discuss the angiography findings with you and your family. If significant blockages are found, the treatment plan — medical management, angioplasty, or bypass surgery — will be explained.

Medical Interpretation

Understanding Your Angiography Results

How stenosis severity is measured and what each level of blockage means for treatment.

Stenosis (% Narrowing)Clinical SignificanceTypical Next Step
0–30%Minimal — non-obstructive plaqueOptimise cardiovascular risk factors; lifestyle modification
30–50%Mild — non-flow-limitingAggressive medical therapy (statins, aspirin); annual surveillance
50–70%Intermediate — may or may not cause ischaemiaFunctional testing (FFR or iFR) to determine if PCI is needed
>70%Significant — haemodynamically importantCoronary angioplasty (PCI) with drug-eluting stent in most cases
>90% or total occlusionCritical — high-risk for heart attackUrgent PCI; CABG if multi-vessel disease or left main involvement

FFR (Fractional Flow Reserve) is a wire-based test performed during angiography to measure the functional significance of an intermediate stenosis (50–70%). A lesion with FFR ≤ 0.80 is confirmed haemodynamically significant and warrants treatment. The FAME trial demonstrated that FFR-guided PCI reduces major adverse cardiac events by 28% compared to angiography-guided PCI alone.

Clinical Safety

Benefits and Risks of Coronary Angiography

A balanced, evidence-based view of the procedure's safety and effectiveness.

Core Clinical Benefits

  • Definitive diagnosis — eliminates uncertainty from non-invasive tests
  • Maps the exact anatomy of every coronary artery
  • Enables immediate treatment (ad-hoc PCI) if indicated
  • Essential for surgical planning (CABG decisions)
  • Assesses left ventricular function
  • Short procedure, local anaesthesia, same-day discharge possible

Potential Risks & Incidence

  • Bruising/haematoma at wrist: <2% with radial access
  • Contrast allergy: 0.1–0.5% (pre-medicated if at risk)
  • Contrast nephropathy: <1% in normal kidney function
  • Stroke or MI: <0.05% at experienced centres
  • Coronary artery dissection: extremely rare (<0.01%)
  • Death: <0.05% (lower than risk of untreated CAD)
Post-Op Protocol

Recovery: What to Expect After

What happens after your angiography — from the recovery bay to the first 48 hours at home.

In the Hospital (First 4–6 Hours)

  • You will rest in a monitored recovery bay for 2–4 hours.
  • A haemostasis band is worn on the wrist for 2–3 hours after radial access; a trained nurse will gradually deflate and remove it.
  • You can sit up, eat, and drink normally within 1–2 hours.
  • Your cardiologist will visit to explain the angiography findings and discuss the treatment plan.
  • Most patients undergoing elective diagnostic-only angiography are discharged on the same day.

At Home (First 24–48 Hours)

  • Avoid driving for 24 hours after the procedure due to residual sedation.
  • Keep the wrist dry for 24 hours. Avoid heavy lifting with the access arm for 48 hours.
  • Watch for warning signs: increasing wrist pain, swelling above or below the bandage, bleeding, chest pain, or breathlessness — call 97695 17636 or visit the emergency department immediately.
  • Drink 1.5–2 litres of water over the first 24 hours to help the kidneys flush out contrast dye.
  • Resume normal activities and medications as directed by your cardiologist.
StageExpectations
Clinical Evidence

Landmark Clinical Evidence

Key trials and meta-analyses supporting radial access coronary angiography.

73%
RIVAL Trial · NEJM 2011

Radial access reduces major bleeding complications by 73% compared to femoral access

n = 7,021 patients. N Engl J Med 2011;365:774–784

The landmark RIVAL trial (2011, New England Journal of Medicine, n = 7,021 patients) established that radial access angiography reduces major bleeding complications at the access site by 73% compared to femoral access. Subsequent meta-analyses involving over 24,000 patients have consistently confirmed this advantage, particularly in patients receiving anticoagulant and antiplatelet therapy.

Patient FAQs

Frequently Asked Questions

The most common concerns raised by patients before coronary angiography — each answer is self-contained and evidence-based.

Coronary angiography is performed under local anaesthesia at the wrist with mild intravenous sedation. Most patients experience only mild pressure at the catheter insertion site and no pain during the procedure. There are no pain-sensing nerves inside blood vessels or the coronary arteries, so the passage of the catheter is painless. When contrast dye is injected, a brief warm, flushing sensation is common — this is temporary, lasting only a few seconds, and is harmless.

The coronary angiography procedure itself typically takes 30 to 60 minutes. Complex cases or those requiring additional functional testing (FFR, IVUS) may take longer. Including pre-procedure preparation and post-procedure observation, patients should plan for approximately 4 to 6 hours at the hospital. In most cases of elective diagnostic angiography performed via the radial approach, same-day discharge is routine.

The radial approach is a technique where the catheter is inserted through the radial artery at the wrist rather than the femoral artery at the groin. The landmark RIVAL trial (NEJM, n = 7,021) established that radial access reduces major bleeding complications by 73% compared to femoral access. Patients can sit up and walk immediately after the procedure, and same-day discharge is routinely possible. Radial access is the preferred approach at Heartwise Cardiology wherever anatomically feasible.

Coronary angiography is a safe, routinely performed procedure with a major complication rate of less than 0.1% in experienced interventional centres (ESC Guidelines 2023). The risk of stroke or heart attack related to the procedure is less than 0.05%. Minor complications — such as bruising at the access site — occur in under 2% of cases with radial access. The procedure is performed in a dedicated Cath Lab with full resuscitation equipment and a trained cardiac team present throughout.

Angiography results are reported as percentage stenosis — the degree of narrowing in each coronary artery. Blockages below 50% are generally non-significant and managed with medications. Stenosis between 50–70% is intermediate and may require additional functional testing (FFR) to decide on treatment. Stenosis above 70% is clinically significant and typically warrants angioplasty with stenting. Total occlusions (100% blockage) are treated urgently. Your cardiologist will explain your specific results in detail after the procedure.

Fast for 4 to 6 hours before the procedure. Inform your cardiologist of all medications — particularly blood thinners (aspirin, clopidogrel, warfarin) and diabetic medication (metformin should be stopped 24–48 hours prior). Blood tests, an ECG, and kidney function tests (creatinine) will be done beforehand. Arrange a companion who can drive you home, as you will not be permitted to drive for 24 hours. Leave jewellery at home and wear comfortable, loose-fitting clothing.

If the angiography reveals significant coronary artery disease, your interventional cardiologist will discuss three possible treatment paths: optimised medical therapy alone (for mild disease), coronary angioplasty and stenting (PCI — often performed in the same sitting as the angiogram, known as an ad-hoc procedure), or coronary artery bypass surgery (CABG — recommended for complex multi-vessel disease or left main artery involvement). The best option depends on the number, location, and severity of blockages as well as your overall health.

Coronary angiography is classified as a listed medical procedure and is covered under most Indian health insurance policies, including CGHS (Central Government Health Scheme), ECHS (Ex-Servicemen Contributory Health Scheme), and Ayushman Bharat Pradhan Mantri Jan Oyoana (PM-JAY). Most private health insurers (Star Health, New India, ICICI Lombard, HDFC Ergo) also cover the procedure. Pre-authorisation from your insurer and an original cardiologist referral letter are typically required. Contact Heartwise Cardiology on 97695 17636 for insurance guidance.

Clinical Philosophy

Precision in structural interventions. Excellence in clinical outcomes.

Dr. Amit Singh, FACC
Consultant
Dr. Amit Singh, FACC

Consultant Interventional Cardiologist

Book a Visit.

Pick a date and time that works for you.

Select a date

June 2026
Online Scheduling

Book an Appointment with Dr. Amit Singh, FACC.

Schedule a cardiology consultation at Heartwise Clinic in Vashi, Navi Mumbai — online booking, WhatsApp, or call. Dr. Amit Singh offers in-clinic and secure video teleconsultations for patients across India and internationally.

1

Choose Date & Time

Pick a slot that fits your schedule from available morning or evening appointments.

2

Share Your Details

Provide your name, contact number, and a brief note about your cardiac concern or reason for visit.

3

Get Confirmed

Our clinical team confirms your slot within 24 hours via call or WhatsApp with pre-visit instructions.

4

Consult In-Clinic or Online

Visit Heartwise Clinic in Vashi or join a secure HD video teleconsultation from anywhere.

Consultation Options

In-Clinic Consultation

Kokilaben Hospital, Kopar Khairane & Heartwise Clinic, Vashi

HD Video Teleconsultation

Available pan-India and for international patients

WhatsApp Booking

Quick booking via +91 97695 17636 — reports & follow-ups

RK
PS
AP
MJ

100+ appointments this month

Confirmed by our clinical team

4.9 / 5 rating

From patient reviews

Clinical Locations

Our Cardiology
Centers.

Dr. Amit Singh consults across multiple flagship centers and outreach clinics in Navi Mumbai & Dombivli to ensure specialized, top-tier cardiac care is directly accessible.

Private Clinic

Our primary private cardiology clinic located in the heart of Vashi. Fully equipped for comprehensive heart health evaluations, non-invasive cardiac testing, and personalized consultations with Dr. Amit Singh in a comfortable and private setting.

OPD HoursMon – Sat: 9:00 AM – 8:00 PM
Hospital Attachment

Dr. Amit Singh is a key consultant at Kokilaben Dhirubhai Ambani Hospital, providing access to world-class infrastructure, advanced cath labs, and intensive care units for complex cardiac interventions and emergencies.

OPD HoursMon – Sat: 8:00 AM – 6:00 PM
Outreach Clinic

Bringing specialized heart care closer to you. Our Palava outreach clinic ensures that residents of Palava City and Dombivli have access to top-tier cardiac consultations without having to travel far.

OPD HoursMon, Wed, Fri (Session basis)
Outreach Clinic

Located in the rapidly developing node of Ulwe, our outreach clinic at Deepisha Medical Centre provides comprehensive cardiology evaluations and follow-ups for our patients in the region.

OPD HoursTue, Thu, Sat (Session basis)

Navi Mumbai Sectors & Surrounding Nodes Served

VashiKopar KhairaneNerulSanpadaSeawoodsCBD BelapurGhansoliTurbheAiroliKhargharPanvelKamotheUlweKalamboliTalojaJuinagar

Triple ESC & FACC Certified

International guidelines and clinical safety protocols applied across all heart centers.

99% Success Rate

Beat Better. Live Wiser.

Dr. Amit Singh, FACC

Dr. Amit Singh, FACC

Consultant Interventional Cardiologist

Medical Disclaimer: This article has been written and reviewed by Dr. Amit Singh, FACC, for educational purposes only. It does not constitute personalised medical advice and should not be used as a substitute for a consultation with a qualified cardiologist. Individual clinical decisions must be made by a treating physician based on complete medical history and examination. If you are experiencing chest pain, breathlessness, or other cardiac symptoms, seek emergency medical care immediately.