Viewing Study NCT03828578



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Last Modification Date: 2024-10-26 @ 1:03 PM
Study NCT ID: NCT03828578
Status: COMPLETED
Last Update Posted: 2023-08-31
First Post: 2019-01-19

Brief Title: Comparison of AIRVO High Flow Oxygen Therapy With Standard Care for Prevention of PPCs After Major HN Surgery
Sponsor: Cardiff and Vale University Health Board
Organization: Cardiff and Vale University Health Board

Study Overview

Official Title: Comparison of AIRVO High Flow Oxygen Therapy With Standard Care for Prevention of Post-operative Pulmonary Complications After Major Head and Neck Surgery Involving Insertion of a Tracheostomy - A Proof of Concept Study
Status: COMPLETED
Status Verified Date: 2023-08
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: None
Brief Summary: Patients undergoing major head and neck surgery often develop breathing difficulties as a result of build up of sputum and difficulty taking deep breaths Often as part of the surgery patients may also require a tracheotomy tube a temporary tube placed into their airway which is removed around 5-7 days after the operation The presence of this tracheostomy tube increases the patients risk of developing breathing problems especially difficulty clearing sputum and reduced lung volumes To reduce the risk of developing these problems different forms of oxygen therapy and humidification are used This normally involves using oxygen masks nebulisers and other medications to help loosen the sputum and maintain blood oxygen levels Another method of giving oxygen and humidification is through the use of AIRVO which delivers the air oxygen to the patient at higher rates as well as warming and humidifying the air

The aim of this study is to compare the AIRVO system to standard care in a small sample of patients 20 patients undergoing major head and neck surgery involving insertion of a tracheostomy tube

The study will compare rates of breathing complications eg pneumonia reduced lung volume as well as comparing the time to remove the tracheostomy tube and the time the patient is required to stay in hospital These results will then be used to develop a larger funded study
Detailed Description: Major head and neck surgery involving micro-vascular reconstructions are prolonged procedures with considerable post operative risk Not only do patients have prolonged time in theatre the surgery involves two distinct surgical sites head neck site and peripheral flap donor site and requires the patient to be admitted to a high care area for overnight sedation and ventilation This combined with the presence of significant co-morbidities such as hypertension cardiomyopathy and respiratory disease place the patient at significant risk of post-operative complications A recent prospective cohort study reported complication rates in nearly 65 of cases of which 29 were of pulmonary origin Furthermore of these 14 patients required treatment in the intensive care or high dependency Interestingly and in contrast to other research3 neither pre-operative smoking nor the presence of pre-existing lung disease predicted pulmonary complications

The risks of post-operative pulmonary complications PPCs seem to be further increased in those patients requiring a tracheostomy This tracheostomy is required to facilitate access to the tumour location and to provide post-operative airway protection in the presence of significant swelling or oedema The risks of tracheostomy are well known4 Patients are prone to increased rates of infection poor sputum clearance and inadequate humidification These complications lead to prolonged admissions delays in tracheostomy weaning and considerable healthcare related costs To overcome these issues national guidance documents have identified the need to provide adequate humidification to prevent mucus plugging as well as the provision of increased nursing care for stoma site cleaning and inner tube care Historically humidification has been provided by heated systems however due to perceived increased infection risk this has fallen out of favour and now passive humidification systems such as heat moisture exchangers have become more popular

Clearly the combination of the risks of major head and neck surgery and those of a tracheostomy place the patient at significant risk As such it is essential to develop new post-operative management protocols to reduce the occurrence of post-operative complications

AIRVOTM a form of non-invasive high flow oxygen therapy HFOT which delivers high flow heated and humidified oxygen and air via a tracheostomy tube at a prescribed fraction of inspired oxygen and a maximum flow of 60 Lmin is an attractive alternative to conventional oxygen therapy Previous studies have shown that HFOT therapy generates a flow-dependent positive airway pressure and improves oxygenation by increasing end-expiratory lung volume thus suggesting a possible alveolar recruitment associated with high-flow therapy Although widely used in other clinical areas including patients with tracheostomy tubes HFOT delivered in the AIRVOTM system has yet to be evaluated in the Head and Neck surgery population

This study aims to compare the effects of application of HFOTdelivered via AIRVOTM therapy and conventional oxygen and humidification administration after major head and neck surgery involving insertion of a tracheostomy tube on postoperative pulmonary complications The study will also compare post-operative length of stay time to tracheostomy tube cuff deflation tracheostomy tube decannulation antibiotic use and post-operative physiotherapy requirements

The results of this proof of concept study will be used to further develop local protocols and to inform a grant funded multi-centre trial

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: False
Is a FDA Regulated Device?: False
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None