28 Review of Operative and Non-Operative Time-Use During General Anaesthetic Cases in a Busy Surgical Oncology Service

Aim

To review theatre running times of all general anaesthetic cases performed in a single theatre during a set six-week period. We intend to assess the division of theatre time between operative and non-operative tasks and review areas of improvement in our department.

Method

The data was collected concurrently by a member of the surgical team (AB) at the time of surgery. Date, surgical procedure, and time elapsed from knife-to-skin (KTS) to skin closure were monitored between the hours 08:30–17:00. Results were reviewed and presented graphically using Microsoft Excel. Instances of theatre over-running were identified, and these outliers were reviewed in more detail.

Results

We identified two main time management issues in our department. The first occurs prior to the first procedure which highlighted significant delays with only one instance of KTS at 08:30 during the period of data collection. The second notable issue is the pattern of delays. There was a trend toward longer delays between cases as the day proceeds.

Conclusions

Upon review of our data, we were able to identify possible areas of improvement in the time management of our theatre group. These improvements will allow for accurate theatre planning which should be a priority for all stakeholders given the significant waiting lists created by the COVID19 pandemic. There are many peer-reviewed methods of improving the efficiency of departments such as ours. Further work is required to discuss targets for improvement with relevant stakeholders and to implement PDSA cycles to assess the impact of implemented changes in our theatre.

24 Mediastinal Ectopic Parathyroid Adenoma Causing Malignant Hypercalcaemia in a Young Female - a Case Report and Review of Literature

Ectopic parathyroid tissue can pose difficulties in diagnosis and management of patients with hyperparathyroidism. Due to the embryological origins of the inferior parathyroid glands from the 3rd pharyngeal arch where they develop with the thymus; they can have variable anatomical locations, including the anterior mediastinum. While the incidence of ectopic parathyroid glands varies in the literature mediastinal parathyroid tissue is extremely rare. This anatomical variation has important diagnostic and surgical ramifications for patients and is an important topic for trainees in medical endocrinology, endocrine surgery, and cardiothoracic surgery to be aware of.

We present the case of a 22-year-old woman who presented as an emergency with severe hypercalcaemia. Who was subsequently found to have an ectopic mediastinal parathyroid adenoma. She underwent surgery within days of her initial presentation providing her with an immediate cure and restoring her calcium homeostasis. Despite diagnostic and operative challenges, combined care from our endocrine and cardio-thoracic surgical teams ensured an uneventful post-operative recovery for this patient.

Primary hyperparathyroidism causing posterior reversible encephalopathy syndrome: a case report

Posterior reversible encephalopathy syndrome (PRES) is a reversible leukoencephalopathy characterised by subcortical vasogenic oedema and neurological signs. We present the case of a 64-year-old woman who presented to hospital with symptomatic primary hyperparathyroidism. Her parathyroid hormone (PTH) level on admission was elevated at 1,330ng/l (normal range15-68ng/l) and her serum calcium measured 4.83mmol/l (normal range 2.25-2.54mmol/l). Technectium-99m sestamibi scan demonstrated a focus of radiotracer uptake consistent with a right upper parathyroid adenoma or carcinoma. After commencing appropriate medical treatment, the patient developed intractable seizures necessitating endotracheal intubation. Magnetic resonance imaging of her brain revealed bilateral symmetrical T2 hyperintensities in the posterior circulation consistent with PRES. Following stabilisation and further medical treatment for hypercalcaemia, the patient underwent a parathyroidectomy. Preoperative rapid PTH assay measured 1,021ng/l. Following excision, PTH levels fell to just 10ng/l. She was extubated in the intensive care unit on postoperative day 1 and made an uneventful recovery. At her 6-week follow-up appointment, all neurological symptoms had resolved. PRES is a rare neurological entity more often seen in the setting of hypertension, immunosuppression and renal failure. The development of new neurological manifestations in the setting of known risk factors should raise suspicion for the underlying diagnosis.

P12: PREDICTORS OF CONVERSION FROM MINIMALLY INVASIVE TO OPEN ADRENALECTOMY: A SYSTEMATIC REVIEW & META-ANALYSIS OF OBSERVATIONAL STUDIES

Introduction

Minimally invasive adrenalectomy has become the standard of care internationally in benign adrenal disease. Intra-operative conversion to open surgery is associated with significantly increased morbidity and prolonged hospital stay. The aim of this systematic review is to identify risk factors associated with intra-operative conversion of minimally invasive adrenalectomy.

Method

This systematic review was conducted according to MOOSE guidelines. PubMed, EMBASE and Cochrane library were systematically searched for observational studies evaluating risk factors for intra-operative conversion of minimally invasive adrenalectomy to open surgery. Specific risk factors of interest included patient demographics, patient co-morbidities, tumour characteristics and histology.

Result

Eight studies met the inclusion criteria for analysis with a total of 2939 patients. 6.02% (n=177) required intra-operative conversion. 67.5% (n=1983) underwent laparoscopic transperitoneal adrenalectomy. There were no significant associations between any patient demographics or co-morbidities and intra-operative conversion. Tumour characteristics such as right sided tumours (pooled odds ratio (OR), 1.51; 95% Confidence Interval (CI), 0.98-2.32; p=0.06) and increasing tumour size (OR, 2.29; 95% CI, 1.4-3.74; p=0.001) were shown to be significantly associated with an increased risk of conversion. Pheochromocytoma (OR, 2.21; 95% CI, 1.89-2.58; p<0.0001) and malignancy (OR, 5.38; 95% CI, 2.1-13.81; p=0.005) were also significant predictors of intra-operative conversion.

Conclusion

Minimally invasive adrenalectomy has significantly reduced post-operative morbidity in patients requiring adrenal surgery but the need for intra-operative conversion remains significant. Identifying patients at increased risk of conversion pre-operatively may assist intra-operative decision making and contribute to improved patient outcomes.

Take-home message

Minimally invasive adrenalectomy carries a significant risk of conversion. Recognising patients with known risk factors for conversion aids risk stratification and may contribute to better outcomes.

P9: MANAGEMENT OF ESOPHAGEAL FOOD BOLUS OBSTRUCTION AT A UNIVERSITY TEACHING HOSPITAL – A RETROSPECTIVE ANALYSIS

Introduction

Despite the fact that esophageal food bolus obstruction is a common surgical problem, there are no clear guidelines on its management. Medical treatment with Buscopan and Glucagon is mostly in-effective, requiring a therapeutic Oesophago-Gastro-Duodenoscopy (OGD).

Method

All consecutive cases of food bolus obstructions (FBO) presenting to the Emergency Department (ED) for 18 month period between 01/01/2018 and 30/06/2019 were retrospectively reviewed.

Result

A total of 30 patients were admitted with food bolus obstruction via ED (1.67 per month). Females (67%) constituted most of these patients. Average age was 55 with range of 19-83. 84% of patients presented with Dysphagia, while Odynophagia (10%) and chest pain (6%) were other presenting symptoms. Average duration of symptoms was 17 hours (Range 2 – 48 hours). 44% of patients had OGD done under sedation while others (56%) had under General Anaesthesia (GA). In 70% of cases, food bolus was pushed into stomach, while it was retrieved out in 20%. In 10%, it had already spontaneously passed in stomach on OGD. The etiology of FBO was inflammatory in 60% cases, while an esophageal stricture was seen in 10% only. In 30% cases no cause of FBO was identified. Post-OGD length of stay was on average 1.15 days (range 12 hours – 7 days). 2 patients had aspiration pneumonia prolonging their hospital stay, there was no esophageal perforation or mortality.

Conclusion

Esophageal food bolus obstruction is a common surgical problem, OGD under GA is a safe recommended procedure, which often picks up an underlying pathology.

Take-home message

Esophageal food bolus obstruction is a common surgical problem, OGD under GA is a safe recommended procedure, which often picks up an underlying pathology.

Training workshops in problem-based learning: changing faculty attitudes and perceptions in a Pakistani medical college

BACKGROUND

Problem-based learning (PBL) has over the years become a learning strategy established for teaching students in medicine. In order to use PBL as a teaching tool, faculty must be familiar with PBL and comfortable with the role transition from 'teacher' to 'facilitator'. This transition is critical for the success of PBL. This article describes the faculty development process undertaken in Pakistan at the onset of introduction of PBL in the curriculum.

METHODS

At the Foundation University Medical College (FUMC), we initiated a faculty development program in PBL. The program consisted of two-day, hands-on facilitator training workshops conducted five times over the year and led by in-house faculty. A total of 180 faculty members completed these workshops. The workshops consisted of interactive sessions on the philosophy of PBL, small group dynamics, the role of the facilitator, an introduction to case design, wrap-up PBL sessions and assessment in PBL. Participants were provided with pre-workshop reading material in the form of 'PBL Handbooks', which contained details of the PBL process and specific responsibilities of the facilitator. Participants were also given a chance to experience the role of the facilitator by facilitating the faculty-learner group through a PBL session and receiving feedback. A retrospective pre-post survey was conducted to gauge changes in participants' perceptions of PBL.

RESULTS

The faculty reported a significant increase in their regard for PBL as an instructional paradigm (p=<0.001). They also generally became more interested in empowering students with self-directed learning using PBL as a teaching tool and showed a greater desire to be facilitators (p=<0.001).

CONCLUSION

This evaluation reveals that facilitator training workshops can help not just to improve the facilitation skills of participants but also to stimulate interest amongst faculty to use PBL in the curriculum. Such workshops can be run in Pakistan at minimal cost: the only cost we incurred was for photocopying the reading material. How much difficulty the faculty will actually have serving as facilitator in the PBL process will only become evident when they lead PBL groups over the coming year.