astronomy

Marjan Jahangiri

Marjan Jahangiri is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Marjan Jahangiri rather than just read about it. In short: Marjan Jahangiri FRCS, FRCS (CTh) is Professor of Cardiac Surgery at St. George's Hospital, University of London.

Key takeaways

Marjan Jahangiri belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Marjan Jahangiri to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Marjan Jahangiri from memory before moving on to harder problems.

Reference excerpt

Marjan Jahangiri FRCS, FRCS (CTh) is Professor of Cardiac Surgery at St. George's Hospital, University of London. She was the first woman to be appointed professor of cardiac surgery in the United Kingdom and Europe.

Early life Jahangiri was the first woman to be appointed Professor of Cardiac Surgery in the United Kingdom and Europe, receiving her MBBS from UCL in 1988.

Career Jahangiri graduated in medicine from University College Hospital, London and then completed her general surgical training at University College London and affiliated hospitals. She trained at the London Chest, St Bartholomew's and the Royal Brompton Hospitals in London. She was awarded a research fellowship at the William Harvey Laboratories at St. Bartholomew's Hospital and Medical School. She then subspecialized in paediatric and adult congenital surgery at Great Ormond Street Hospital and Children's Hospital in Boston, Harvard University. She was appointed Consultant Cardiac Surgeon and Senior Lecturer in 2001 at St. George's Hospital, University of London and then appointed Professor of Cardiac Surgery at University of London in 2007. She has been the author of more than 250 peer-reviewed publications, and has supervised more than 25 research fellows in their PhDs and master's degrees. In 2018 she was suspended by her employers pending an "investigation into very serious issues raised". Jahangari took her employers to the high court where the suspension order was lifted. The hospital in time issued a joint statement with Jahangiri which contained an apology. A new person was brought in to lead the department. Jahangiri has been in charge of the London Training Programme for Cardiothoracic Surgery and in 2019 was appointed Chair of the Specialty Advisory Committee of the Surgical Royal Colleges. She has received several awards for surgical training, as well as the BMJ Clinical Leadership Team Award in 2018.

Research and selected publications Jahangiri M Invited Commentary: "Does early postoperative atrial fibrillation cost 6 months of life expectancy?" The Journal of Thoracic and Cardiovascular Surgery. 2026 Jun 15:S0022-5223(26)01076-7. EACTS Expert Consensus Statement on the Ross Procedure in Adult Patients. EACTS Scientific Document group. European Journal of Cardio-Thoracic Surgery 2026 Feb 5;68. Pratz F, Borger M ...Jahangiri M, ...ESC/EACTS Scientific Document Group "2025 ESC/EACTS Guidelines for the management of valvular heart disease: Developed by the task force for the management of valvular heart disease of the European Society of Cardiology (ESC) and the European Association for Cardio-Thoracic Surgery (EACTS)" European Society of Cardiology. Mani K, de Laurentis E, Naruka V, Morgan R, Jahangiri M "Incidence and risk factors for permanent pacemaker implantation following aortic root surgery". Open Heart (journal) July 2026. DOI:10.1136/openhrt-2026-003984 Jahangiri M. "Which Life Is More Important?" The Annals of Thoracic Surgery. 2026;12:1505 Jahangiri M, Thilaganathan B "Is Cardiac Surgery Safe During Pregnancy?" The Annals of Thoracic Surgery. 2025;119:509-512. Jahangiri M, Prendergast B. "Invited Review: Management of bicuspid aortic valve in disease in the transcatheter aortic valve implantation era". Heart Journal. 2024 Oct 28;110:1291-1297. Grant M, Crisafi C, Alvarez A, Arora R, Brindle M, Chatterjee S et al., Jahangiri M. "Perioperative Care in Cardiac Surgery: A Joint Consensus Statement by the Enhanced Recovery After Surgery (ERAS) Cardiac Society, ERAS International Society, and The Society of Thoracic Surgeons (STS)", The Annals of Thoracic Surgery: August 2024: 669–689 Jahangiri M, Garbi M, Ellery J, Briffa N. "Universal adoption of TAVI to intermediate/low risk and younger patients with aortic valve disease? A word of caution and call to action" SCTS Bulletin {Ahead of publication} Jahangiri M. "Redo Surgical Aortic Valve Replacement in the ERA of Transcatheter Aortic Valve replacement". The Annals of Thoracic Surgery, 2023 116:767 Mani M, Lutman J, Nowell J, Carrol A, Jahangiri M. "Patients expectation of postoperative course and satisfaction following cardiac surgery". Innovation, Annals of the Royal College of Surgeons of England 2023;105:20-27 Duregotti E, Reumiller C, Mayr U, Hasman M, Schmidt L, Viviano A, Jahangiri M, Mayr M. "Reduced secretion of neuronal growth regulator 1 contributes to impaired adipose-neuronal crosstalk in obesity" Nature Communications 2022;13:7269 Jahangiri M, Mani K,Acharya M, Bilkhu R, Quinton P, Schroeder F, Morgan R, Edsell M. Early and Long-term Outcomes of Conventional and Valve-Sparing Aortic Root Replacement. Heart Journal 2022;10: 1136. Jahangiri M, Mani K, Nowell J. "Does minimally invasive coronary artery surgery have prognostic and cost benefits?" The Annals of Thoracic Surgery 2022;114;609-610 Jahangiri M, Bilkhu R, Mani K, et al. "Early and long-term outcomes of conventional and valve-sparing aortic root replacement" Heart Journal 2022; 108: 1830-1838 Accompanied editorial by Tirone David Jahangiri M. "Self-expanding Transcatheter vs Surgical Aortic Valve Replacement in Intermediate-Risk Patients: 5-Year Outcomes of the SURTAVI Randomized Clinical Trial" JAMA Cardiology 2022;7:1000-1008. Invited Commentary Jahangiri M, R Bilkhu, A Embleton-Thirsk, HM Dehbi... – BMJ open, 2021. "Surgical aortic valve replacement in the era of transcatheter aortic valve implantation: a review of the UK national database"

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Marjan Jahangiri

Start with the simplest possible case. Write down what Marjan Jahangiri claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Marjan Jahangiri before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Marjan Jahangiri ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Marjan Jahangiri

In research: Marjan Jahangiri appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Marjan Jahangiri in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Marjan Jahangiri is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alumni of University College London, Alumni of the University of London, British cardiac surgeons, so understanding it makes those chapters shorter.
In everyday life: Look for Marjan Jahangiri outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Marjan Jahangiri in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Marjan Jahangiri means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Marjan Jahangiri out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Marjan Jahangiri in simple terms?

Marjan Jahangiri FRCS, FRCS (CTh) is Professor of Cardiac Surgery at St. George's Hospital, University of London.

Why does Marjan Jahangiri matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Marjan Jahangiri?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Marjan Jahangiri.