Publications by authors named "Wiremu MacFater"

Background: The National Emergency Laparotomy Audit (NELA) risk prediction tool has demonstrated superiority in predicting 30-day mortality after emergency laparotomy (EL). The aim of our study was to evaluate the accuracy of NELA in calculating long-term (5 year) mortality and determine factors predicting long-term risk of death after EL.

Methods: This retrospective cohort study included consecutive patients who underwent EL for any indication other than trauma between May 2012 and June 2017 at a large tertiary and academic teaching center.

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Objectives: To assess hearing levels and functional health outcomes of children two years after routine grommet surgery with standard care follow-up (discharge to General Practitioner (GP) care or Ear Nose and Throat (ENT) clinic appointment at 4-8 weeks).

Methods: Prospective cohort study of 89 children (average age of 7.98 years) recalled for audiological assessment 2 years after grommet surgery in a large ENT outpatient service in South Auckland, New Zealand.

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Background: Middle ear disease is common in children and, if untreated, can lead to long term complications. This study investigated whether ethnic or socioeconomic inequities existed among children referred to a tertiary regional paediatric ORL service.

Methods: All middle ear pathology related referrals to Starship Children's Hospital ORL service during 2018 and 2019 were reviewed.

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Background: Both topical and oral metronidazole have been shown to reduce pain after excisional hemorrhoidectomy. Although recent meta-analyses have demonstrated efficacy against placebo, there has been no comparison between the 2 routes.

Objective: This study aims to investigate whether topical or oral metronidazole provides the most analgesic properties after excisional hemorrhoidectomy.

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Introduction: Controlling perioperative pain is essential to improving patient experience and satisfaction following surgery. Traditionally opioids have been frequently utilized for postoperative analgesia. Although they are effective at controlling pain, they are associated with adverse effects, including postoperative nausea, vomiting, ileus, and long-term opioid dependency.

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Background: High-quality colonoscopy is essential for investigating suspected colorectal cancer and relies on endoscopists meeting key performance indicator (KPI) targets. The rising demand for colonoscopy raises concerns that Māori populations could be under-served. This study aimed to compare rates of colonoscopy provision and colonoscopy KPIs between Māori and New Zealand (NZ) European patients.

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Appropriate management of post-operative pain is an ongoing challenge in surgical practice. At present, systemic opioid administration is routinely used for analgesia in the post-operative setting. However, due to significant adverse effects and potential for misuse, there is a perceived need for the development of alternative, opioid-sparing treatment modalities.

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Background: Emergency laparotomy (EL) is a common procedure with high mortality leading to several efforts to record and reduce mortality. Risk scores currently used by quality improvement programmes either require intraoperative data or are not specific to EL. To be of utility to clinicians/patients, estimation of preoperative risk of mortality is important.

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Background: Excisional haemorrhoidectomy has been traditionally performed under general or regional anaesthesia. However, these modes are associated with complications such as nausea, urinary retention and motor blockade. Local anaesthesia (LA) alone has been proposed to reduce side effects as well as to expedite ambulatory surgery.

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Purpose: Emergency laparotomy (EL) encompasses a high-risk group of operations, which are increasingly performed on a heterogeneous population of patients, making preoperative risk assessment potentially difficult. The UK National Emergency Laparotomy Audit (NELA) recently produced a risk predictive tool for EL that has not yet been externally validated. We aimed to externally validate and potentially improve the NELA tool for mortality prediction after EL.

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Background: High concentrations of local anaesthetic have an anti-proliferative effect on colonic cancer in vitro. Intraperitoneal local anaesthetic (IPLA) has shown analgesic benefit and improved recovery in the perioperative setting. The long-term effects of IPLA in colon cancer resection have not been examined.

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Purpose: Post-operative pain following excisional haemorrhoidectomy poses a particular challenge for patient recovery, as well as a burden on hospital resources. There appears to be an increasing role for topical agents to improve this pain, but their efficacy and safety have not been fully assessed. This systematic review aims to assess all topical agents used for pain following excisional haemorrhoidectomy.

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Background: Multimodal analgesic regimes are required to treat pain. Intraperitoneal (IP) agents, such as local anesthetics (LAs), have been shown to reduce pain after abdominal surgery. Other IP analgesics have been tested in several randomized control trials (RCTs), but no reviews or guidelines have evaluated their use.

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Introduction: Sarcopenia is the progressive loss of skeletal muscle mass, strength and general decline in function associated with age, and has previously been shown to be a predictor of poor outcomes following surgery. Computed tomography (CT)-assessed sarcopenia has been proposed to be an independent predictor of outcomes for trauma patients. This systematic review aims to determine the impact of CT-assessed sarcopenia on patient mortality following trauma.

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Background: Anastomotic leakage (AL) is a dreaded complication following colorectal surgery. Procalcitonin is one of many biomarkers studied and research has suggested that it has improved accuracy for the diagnosis of AL compared with other inflammatory biomarkers such as C-reactive protein. This meta-analysis was conducted to evaluate the accuracy of procalcitonin in the early diagnosis of AL following colorectal surgery.

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Background: Excisional haemorrhoidectomy has traditionally been performed on an inpatient basis due to concerns over post-operative pain and urinary retention. Day case procedures are increasingly common. This study aims to investigate readmission rates following day case compared with inpatient haemorrhoidectomy.

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Introduction: Osteomyelitis can lead to significant morbidity and long-term disability if early treatment is not initiated in a timely manner. For developing countries this can lead to a significant burden on the healthcare system. This study aims to describe the demographic variables, aetiology and outcomes of treatment and to calculate the incidence of paediatric osteomyelitis in Fiji.

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Introduction: Modern perioperative care strategies aim to optimise perioperative care by reducing the body's stress response to surgery. A major facet of optimising an abdominal surgery analgesia programme is using a multimodal opioid sparing approach. Local anaesthetics have shown promise and there has been considerable research into the most effective route for their administration.

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Background: Colorectal surgery leads to morbidity during recovery including pain and fatigue. Intravenous (IV) lignocaine (IVL) has both analgesic and anti-inflammatory effects that may improve post-operative pain and recovery. The aim of this review is to compare the effectiveness of IVL to other perioperative analgesia regimens for reducing pain and opioid consumption following colorectal surgery.

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Background: Clinical prediction rules (CPRs) provide an objective method of assessment in the diagnosis of acute appendicitis. There are a number of available CPRs for the diagnosis of appendicitis, but it is unknown which performs best.

Aim: The aim of this study was to identify what CPRs are available and how they perform when diagnosing appendicitis in adults.

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Aims: The New Zealand Provisional Standards of Service Provision for Cancer recommend providing patients with written information about their diagnosis, treatment and follow up. This project aimed to develop and evaluate a resource that could be used to provide essential information to patients who were nearing completion of the surgical treatment of their cancer.

Methods: The study compared patients with melanoma, colorectal and breast cancers who received standard discussion of their diagnosis, treatment and follow-up plan with cancer patients who received a discussion supported by an individualised follow-up booklet.

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