The effects of anthocyanin of purple cassava on the level of sputum mda and no in asymptomatic smokers

Background and Aims: Venous thromboembolism (VTE) is a feared and well recognised complication of hospitalisation and pulmonary embolism (PE) can result in death. The incidence is one hundred-fold higher than in the community. Computed tomographic pulmonary angiography (CTPA) is the diagnostic method of choice for PE, and is often employed due to its availability after hours, in addition to the information it can give regarding alternative diagnoses. There are however potential disadvantages including radiation exposure, contrast administration reactions and cost. The Royal College of Radiologists (UK) recommend that for referral for CTPA there should be assessment of pre-test probability of PE (using a validated clinical score such as WELLS) and use of d-dimer. The accepted yield of CTPA for PE is 15.4-37.4% with alternative diagnoses in up to 56%. Prevention of hospital VTE is the focus of a 2015 Clinical Excellence Commission Focus report and assessment of VTE risk and appropriate thromboprophylaxis prescription is NSW Health Policy (PD2014_032). It is also the subject of multiple national and International guidelines and regular monitoring of compliance with VTE prescribing is recommended. Methods: A retrospective clinical audit of CTPA over a 6-month period at a Rural Referral Hospital. Results: This study will provide local audit data on the yield of CTPA and also provide information on the rates of VTE risk assessment and prescribing practice in those patients with proven PE. Conclusions: Clinical audit is an essential component of quality assurance, can lead to an understanding of local practice, and guide future quality improvement.