Dr Greenhalgh is the Past President of ACTA (Association of Cardiothoracic Anaestheists) and was on the Directory Board for EACTA (European Association of Cardiothoracic Anaestheists) The International Committee for the ICCVA (International Congress of Cardiovascular Anesthesiologists), EACTA representative for the Program Committee for the SCA, (Society of Cardiovascular Anesthesiologists) and was an examiner for the Royal College of Anaesthetists for 11 years.
She developed transoesphageal echocardiography (TOE) at UHSM & ran an internationally known TOE course for 15 years. Dr Greenhalgh was on the British Echo Society Accreditation committee and has written chapters in Echo textbooks & Ophthalmology books as well as many papers & editorials.
Dr Greenhalgh has organised many international & national meetings including the first (& second) joint with the Society of Cardiothoracic Surgeons, satellite meeting to the WCA in Iguassu Falls, Argentina. The latest was the joint meeting with EACTA & ACTA in Manchester September 2018. She is an international lecturer, World Congress of Anesthesiology Hong Kong, SCA in the USA, ICCVA New Zealand & Brazil, EACTA, ACTA and CASSA.
Specialist interest apart from cardiothoracic anaesthesia & intensive care are echocardiography especially transoesphageal, anaesthesia for plastic surgery, breast, orthopoedic, urology and general surgery.