Medical condition or disease under investigation: Oromaxillofacial surgery in head and neck cancer Purpose of research: Retrospective data analysis identifying hospital acquired pneumonia in patients who undergo temporary tracheostomy with oromaxillofacial surgery and free flap reconstruction Primary objective: Undertake an adequately powered, robustly designed observational cohort study that describes the rates of hospital acquired pneumonia in patients who undergo a tracheostomy and those that undergo overnight intubation during oromaxillofacial surgery for HNC. Secondary objective: To investigate whether smoking history, respiratory history (COPD, asthma) or size of tumour are associated with an increased risk of developing hospital acquired pneumonia. Number of Subjects/Patients: 193 Study Type: Observational cohort Main Inclusion Criteria: Patients who underwent oromaxillofacial resection with free flap reconstruction and tracheostomy from 1st January 2018 to 31st December 2018. Patients who underwent oromaxillofacial resection with free flap reconstruction and with overnight intubation from 1st January 2014 to 31st December 2014 Statistical Methodology and Analysis: A power calculation has been used to determine the sample size required for statistical analysis of data. Statistical significance for rates of HAP will be tested between the two groups.
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Hospital acquired pneumonia
Timeframe: 7 days post surgery