Pearls for Starting a Headache Surgery Practice in Academic and Private Practice

There has been a growing body of evidence indicative of the effectiveness of headache surgery in treating patients with refractory headache disorders. The American Society of Plastic Surgeons issued a Policy Statement in 2018 stating that peripheral nerve decompression surgery for the treatment of refractory chronic headache disorders in select patients is considered a standard of care treatment. This endorsement sparked the interest of numerous plastic surgeons into initiating their own headache surgery practices. However, establishing a headache surgery clinic introduces challenges and considerations. This report outlines the key pillars for launching a successful headache surgery practice in academic and private practice environments.

Unraveling the effect of Cu doping on the structural and morphological properties and photocatalytic activity of ZrO2

Pristine ZrO2 and doped with different concentrations of Copper (0-7 %) were synthesized using a sol-gel combustion route. Several advanced techniques like XRD, EDX, TEM, XPS, P.L., and UV-vis spectrophotometer have characterized the compositions. The XRD proved that all peaks matched with a tetragonal phase of ZrO2 without any impurities of other phases. An average crystallite size rises from 20 to 55 nm by increasing the concentrations of Copper. The elemental analysis was examined by EDX and confirmed the presence of Cooper, Zirconium, and Oxygen. The red shift was observed due to a decrease in the bandgap (5.5-4.01 eV) with increasing the Cu concentrations. From the analysis of photocatalysis of pure ZrO2 and different concentrations of Cu-doped ZrO2 for M.B., RHB, and mix of them. The increase in doping of Cu led to enhancing the performance of the removing MB from 35 to 80 %, however, the RHB degradation was from 42 to 81 % while the mix of M.B. and RHB reached 85 % with 7 % Cu-doping ZrO2.

Niraparib plus abiraterone acetate with prednisone in patients with metastatic castration-resistant prostate cancer and homologous recombination repair gene alterations: second interim analysis of the randomized phase III MAGNITUDE trial

BACKGROUND

Patients with metastatic castration-resistant prostate cancer (mCRPC) and BRCA alterations have poor outcomes. MAGNITUDE found patients with homologous recombination repair gene alterations (HRR+), particularly BRCA1/2, benefit from first-line therapy with niraparib plus abiraterone acetate and prednisone (AAP). Here we report longer follow-up from the second prespecified interim analysis (IA2).

PATIENTS AND METHODS

Patients with mCRPC were prospectively identified as HRR+ with/without BRCA1/2 alterations and randomized 1 : 1 to niraparib (200 mg orally) plus AAP (1000 mg/10 mg orally) or placebo plus AAP. At IA2, secondary endpoints [time to symptomatic progression, time to initiation of cytotoxic chemotherapy, overall survival (OS)] were assessed.

RESULTS

Overall, 212 HRR+ patients received niraparib plus AAP (BRCA1/2 subgroup, n = 113). At IA2 with 24.8 months of median follow-up in the BRCA1/2 subgroup, niraparib plus AAP significantly prolonged radiographic progression-free survival {rPFS; blinded independent central review; median rPFS 19.5 versus 10.9 months; hazard ratio (HR) = 0.55 [95% confidence interval (CI) 0.39-0.78]; nominal P = 0.0007} consistent with the first prespecified interim analysis. rPFS was also prolonged in the total HRR+ population [HR = 0.76 (95% CI 0.60-0.97); nominal P = 0.0280; median follow-up 26.8 months]. Improvements in time to symptomatic progression and time to initiation of cytotoxic chemotherapy were observed with niraparib plus AAP. In the BRCA1/2 subgroup, the analysis of OS with niraparib plus AAP demonstrated an HR of 0.88 (95% CI 0.58-1.34; nominal P = 0.5505); the prespecified inverse probability censoring weighting analysis of OS, accounting for imbalances in subsequent use of poly adenosine diphosphate-ribose polymerase inhibitors and other life-prolonging therapies, demonstrated an HR of 0.54 (95% CI 0.33-0.90; nominal P = 0.0181). No new safety signals were observed.

CONCLUSIONS

MAGNITUDE, enrolling the largest BRCA1/2 cohort in first-line mCRPC to date, demonstrated improved rPFS and other clinically relevant outcomes with niraparib plus AAP in patients with BRCA1/2-altered mCRPC, emphasizing the importance of identifying this molecular subset of patients.

Comparison Between Physiological Scores SIPF, CURB-65, and APACHE II as Predictors of Prognosis and Mortality in Hospitalized Patients with COVID-19 Pneumonia: A Multicenter Study, Saudi Arabia

Background

A coronavirus pandemic (COVID-19) is associated with catastrophic effects on the world with high morbidity and mortality. We aimed to evaluate the accuracy of physiological shock index (SIPF) (shock index and hypoxemia), CURB -65, acute physiology, and chronic health assessment II (APACHE II) as predictors of prognosis and in-hospital mortality in patients with COVID-19 pneumonia.

Methods

In Saudi Arabia, a multicenter retrospective study was conducted on hospitalized adult patients confirmed to have COVID-19 pneumonia. Information needed to calculate SIPF, CURB-65, and APACHE II scores were obtained from medical records within 24 hours of admission.

Results

The study included 1131 COVID-19 patients who met the inclusion criteria. They were divided into two groups: (A) the ICU group (n=340; 30.1%) and (B) the ward group (n=791; 69.9%). The most common concomitant diseases of patients at initial ICU admission were hypertension (71.5%) and diabetes (62.4%), and most of them were men (63.8%). The overall mortality was 18.7%, and the mortality rate was higher in the ICU group than in the ward group (39.4% vs 9.6%; p < 0.001). The SIPF score showed a significantly higher ability to predict both ICU admission and mortality in patients with COVID-19 pneumonia compared with APACHE II and CURB -65; (AUC 0.89 vs 0.87; p < 0.001) and (AUC 0.89 vs 0.84; p < 0.001) for ICU admission and (AUC 0.90 vs 0.65; p < 0.001) and (AUC 0.90 vs 0.80; p < 0.001) for mortality, respectively.

Conclusion

The ability of the SIPF score to predict ICU admission and mortality in COVID-19 pneumonia is higher than that of APACHE II and CURB-65. The overall mortality was 18.7%, and the mortality rate was higher in the ICU group than in the ward group (39.4% vs 9.6%; p < 0.001).

Oxidative stress and viral Infections: rationale, experiences, and perspectives on N-acetylcysteine

This article explores current evidence on the role of oxidative stress in viral infections, and on the use of antioxidant drugs as adjunctive treatment. MEDLINE/PubMed was searched for appropriate keywords, and preclinical and clinical studies with reviews were retrieved and examined by authors. Old and current evidence shows that GSH content reduction is the main mechanism of redox imbalance in viral-infected cells. Clinical studies found that GSH levels are depleted in patients with viral infections such as HIV and SARS-CoV. Viral infections activate inflammation through different pathways, and several of these mechanisms are related to oxidative stress. NAC is a precursor of GSH, and many of its intracellular effects are mediated by GSH replenishment, but it also activates some anti-inflammatory mechanisms. NAC has an excellent safety profile and better oral and topical bioavailability than GSH. These characteristics make NAC a suitable option as a repurposed drug. Adjunctive antioxidant treatment may improve the outcomes of antiviral therapies. Current evidence supports the rationale for this practice and some clinical experience showed encouraging results.

The influence of anastomotic techniques on postoperative anastomotic complications: Results of the Oesophago-Gastric Anastomosis Audit

BACKGROUND

The optimal anastomotic techniques in esophagectomy to minimize rates of anastomotic leakage and conduit necrosis are not known. The aim of this study was to assess whether the anastomotic technique was associated with anastomotic failure after esophagectomy in the international Oesophago-Gastric Anastomosis Audit cohort.

METHODS

This prospective observational multicenter cohort study included patients undergoing esophagectomy for esophageal cancer over 9 months during 2018. The primary exposure was the anastomotic technique, classified as handsewn, linear stapled, or circular stapled. The primary outcome was anastomotic failure, namely a composite of anastomotic leakage and conduit necrosis, as defined by the Esophageal Complications Consensus Group. Multivariable logistic regression modeling was used to identify the association between anastomotic techniques and anastomotic failure, after adjustment for confounders.

RESULTS

Of the 2238 esophagectomies, the anastomosis was handsewn in 27.1%, linear stapled in 21.0%, and circular stapled in 51.9%. Anastomotic techniques differed significantly by the anastomosis sites (P < .001), with the majority of neck anastomoses being handsewn (69.9%), whereas most chest anastomoses were stapled (66.3% circular stapled and 19.3% linear stapled). Rates of anastomotic failure differed significantly among the anastomotic techniques (P < .001), from 19.3% in handsewn anastomoses, to 14.0% in linear stapled anastomoses, and 12.1% in circular stapled anastomoses. This effect remained significant after adjustment for confounding factors on multivariable analysis, with an odds ratio of 0.63 (95% CI, 0.46-0.86; P = .004) for circular stapled versus handsewn anastomosis. However, subgroup analysis by anastomosis site suggested that this effect was predominantly present in neck anastomoses, with anastomotic failure rates of 23.2% versus 14.6% versus 5.9% for handsewn versus linear stapled anastomoses versus circular stapled neck anastomoses, compared with 13.7% versus 13.8% versus 12.2% for chest anastomoses.

CONCLUSIONS

Handsewn anastomoses appear to be independently associated with higher rates of anastomotic failure compared with stapled anastomoses. However, this effect seems to be largely confined to neck anastomoses, with minimal differences between techniques observed for chest anastomoses. Further research into standardization of anastomotic approach and techniques may further improve outcomes.

Increased cannabis intake during the COVID-19 pandemic is associated with worsening of depression symptoms in people with PTSD

BACKGROUND

Some evidence suggests substance use affects clinical outcomes in people with posttraumatic stress disorder (PTSD). However, more work is required to examine links between mental health and cannabis use in PTSD during exposure to external stressors such as the COVID-19 pandemic. This study assessed mental health factors in individuals with self-reported PTSD to: (a) determine whether stress, anxiety, and depression symptoms were associated with changes in cannabis consumption across the pandemic, and (b) to contrast the degree to which clinically significant perceived symptom worsening was associated with changes in cannabis intake.

METHOD

Data were obtained as part of a larger web-based population survey from April 3rd to June 24th 2020 (i.e., first wave of the pandemic in Canada). Participants (N = 462) with self-reported PTSD completed questionnaires to assess mental health symptoms and answered questions pertaining to their cannabis intake. Participants were categorized according to whether they were using cannabis or not, and if using, whether their use frequency increased, decreased, or remained unchanged during the pandemic.

RESULTS

Findings indicated an overall perceived worsening of stress, anxiety, and depression symptoms across all groups. A higher-than-expected proportion of individuals who increased their cannabis consumption reached threshold for minimal clinically important worsening of depression, X²(3) = 10.795, p = 0.013 (Cramer's V = 0.166).

CONCLUSION

Overall, those who increased cannabis use during the pandemic were more prone to undergo meaningful perceived worsening of depression symptoms. Prospective investigations will be critical next steps to determine the directionality of the relationship between cannabis and depressive symptoms.

Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with prostate cancer

The most recent version of the European Society for Medical Oncology (ESMO) Clinical Practice Guidelines for the diagnosis, treatment and follow-up of prostate cancer was published in 2020. It was therefore decided, by both the ESMO and the Singapore Society of Oncology (SSO), to convene a special, virtual guidelines meeting in November 2021 to adapt the ESMO 2020 guidelines to take into account the differences associated with the treatment of prostate cancer in Asia. These guidelines represent the consensus opinions reached by experts in the treatment of patients with prostate cancer representing the oncological societies of China (CSCO), India (ISMPO), Japan (JSMO), Korea (KSMO), Malaysia (MOS), Singapore (SSO) and Taiwan (TOS). The voting was based on scientific evidence and was independent of the current treatment practices and drug access restrictions in the different Asian countries. The latter were discussed when appropriate. The aim is to provide guidance for the optimisation and harmonisation of the management of patients with prostate cancer across the different regions of Asia.

Performance of Salivary Extracellular RNA Biomarker Panels for Gastric Cancer Differs between Distinct Populations

Gastric cancer (GC) has the fifth highest incidence among cancers and is the fourth leading cause of cancer-related death GC has predominantly a higher number of cases in certain ethnic groups such as the Korean population. GC found at an early stage is more treatable and has a higher survival rate as compared with GC found at a late stage. However, a diagnosis of GC is often delayed due to the lack of early symptoms and available screening programs in United States. Extracellular RNA (exRNA) is an emerging paradigm; exRNAs have the potential to serve as biomarkers in panels aimed at early detection of cancer. We previously reported the successful use of a panel of salivary exRNA for detecting GC in a high-prevalence Korean cohort, and that genetic changes reflected cancer-associated salivary exRNA changes. The current study is a case-control study of salivary exRNA biomarkers for detecting GC in an ethnically distinct U.S. cohort. A model constructed for the U.S. cohort combined demographic characteristics and salivary miRNA and mRNA biomarkers for GC and yielded an area under the receiver operating characteristic (ROC) curve (AUC) of 0.78. However, the constituents of this model differed from that constructed for the Korean cohort, thus, emphasizing the importance of population-specific biomarker development and validation.

Severity of oEsophageal Anastomotic Leak in patients after oesophagectomy: the SEAL score

Background

Anastomotic leak (AL) is a common but severe complication after oesophagectomy. It is unknown how to determine the severity of AL objectively at diagnosis. Determining leak severity may guide treatment decisions and improve future research. This study aimed to identify leak-related prognostic factors for mortality, and to develop a Severity of oEsophageal Anastomotic Leak (SEAL) score.

Methods

This international, retrospective cohort study in 71 centres worldwide included patients with AL after oesophagectomy between 2011 and 2019. The primary endpoint was 90-day mortality. Leak-related prognostic factors were identified after adjusting for confounders and were included in multivariable logistic regression to develop the SEAL score. Four classes of leak severity (mild, moderate, severe, and critical) were defined based on the risk of 90-day mortality, and the score was validated internally.

Results

Some 1509 patients with AL were included and the 90-day mortality rate was 11.7 per cent. Twelve leak-related prognostic factors were included in the SEAL score. The score showed good calibration and discrimination (c-index 0.77, 95 per cent c.i. 0.73 to 0.81). Higher classes of leak severity graded by the SEAL score were associated with a significant increase in duration of ICU stay, healing time, Comprehensive Complication Index score, and Esophagectomy Complications Consensus Group classification.

Conclusion

The SEAL score grades leak severity into four classes by combining 12 leak-related predictors and can be used to the assess severity of AL after oesophagectomy.

Textbook outcome following oesophagectomy for cancer: international cohort study

Background

Textbook outcome has been proposed as a tool for the assessment of oncological surgical care. However, an international assessment in patients undergoing oesophagectomy for oesophageal cancer has not been reported. This study aimed to assess textbook outcome in an international setting.

Methods

Patients undergoing curative resection for oesophageal cancer were identified from the international Oesophagogastric Anastomosis Audit (OGAA) from April 2018 to December 2018. Textbook outcome was defined as the percentage of patients who underwent a complete tumour resection with at least 15 lymph nodes in the resected specimen and an uneventful postoperative course, without hospital readmission. A multivariable binary logistic regression model was used to identify factors independently associated with textbook outcome, and results are presented as odds ratio (OR) and 95 per cent confidence intervals (95 per cent c.i.).

Results

Of 2159 patients with oesophageal cancer, 39.7 per cent achieved a textbook outcome. The outcome parameter ‘no major postoperative complication’ had the greatest negative impact on a textbook outcome for patients with oesophageal cancer, compared to other textbook outcome parameters. Multivariable analysis identified male gender and increasing Charlson comorbidity index with a significantly lower likelihood of textbook outcome. Presence of 24-hour on-call rota for oesophageal surgeons (OR 2.05, 95 per cent c.i. 1.30 to 3.22; P = 0.002) and radiology (OR 1.54, 95 per cent c.i. 1.05 to 2.24; P = 0.027), total minimally invasive oesophagectomies (OR 1.63, 95 per cent c.i. 1.27 to 2.08; P &lt; 0.001), and chest anastomosis above azygous (OR 2.17, 95 per cent c.i. 1.58 to 2.98; P &lt; 0.001) were independently associated with a significantly increased likelihood of textbook outcome.

Conclusion

Textbook outcome is achieved in less than 40 per cent of patients having oesophagectomy for cancer. Improvements in centralization, hospital resources, access to minimal access surgery, and adoption of newer techniques for improving lymph node yield could improve textbook outcome.

Textbook outcome following oesophagectomy for cancer: international cohort study

BACKGROUND

Textbook outcome has been proposed as a tool for the assessment of oncological surgical care. However, an international assessment in patients undergoing oesophagectomy for oesophageal cancer has not been reported. This study aimed to assess textbook outcome in an international setting.

METHODS

Patients undergoing curative resection for oesophageal cancer were identified from the international Oesophagogastric Anastomosis Audit (OGAA) from April 2018 to December 2018. Textbook outcome was defined as the percentage of patients who underwent a complete tumour resection with at least 15 lymph nodes in the resected specimen and an uneventful postoperative course, without hospital readmission. A multivariable binary logistic regression model was used to identify factors independently associated with textbook outcome, and results are presented as odds ratio (OR) and 95 per cent confidence intervals (95 per cent c.i.).

RESULTS

Of 2159 patients with oesophageal cancer, 39.7 per cent achieved a textbook outcome. The outcome parameter 'no major postoperative complication' had the greatest negative impact on a textbook outcome for patients with oesophageal cancer, compared to other textbook outcome parameters. Multivariable analysis identified male gender and increasing Charlson comorbidity index with a significantly lower likelihood of textbook outcome. Presence of 24-hour on-call rota for oesophageal surgeons (OR 2.05, 95 per cent c.i. 1.30 to 3.22; P = 0.002) and radiology (OR 1.54, 95 per cent c.i. 1.05 to 2.24; P = 0.027), total minimally invasive oesophagectomies (OR 1.63, 95 per cent c.i. 1.27 to 2.08; P < 0.001), and chest anastomosis above azygous (OR 2.17, 95 per cent c.i. 1.58 to 2.98; P < 0.001) were independently associated with a significantly increased likelihood of textbook outcome.

CONCLUSION

Textbook outcome is achieved in less than 40 per cent of patients having oesophagectomy for cancer. Improvements in centralization, hospital resources, access to minimal access surgery, and adoption of newer techniques for improving lymph node yield could improve textbook outcome.

Frequency of musculoskeletal disorder of upper limb in Type 2 Diabetes patients

Diabetes is a frequently occurring chronic metabolic disease that is characterized by a high blood glucose levels. If left unchecked, it can lead to severe functional impairments such as blindness, renal failure, and coronary artery disease. Approximately 463 million adults (20-79 years) are living with diabetes; by 2045 this will rise to 700 million. Material and method: A cross-sectional survey was conducted in National Institute of Diabetes and Endocrinology, Dow University Hospital, Ojha campus. Patients who had T2DM, and were above 35 years of age were included in the study. Anthropometric measurements were recorded, and the remaining data was collected via a self-reporting questionnaire. Results and discussions: In this study n=55(36.2%) participants were male and n=97(63.8%) were female, with the average age of 52.9 years, and an average BMI of 29.5kg/m2. The mean HBA1C of those diabetic patients was 8.8, and average duration of diabetes of our sample was 6.7 years. Prevalence of MSK disorders was 55.3%. Conclusions: There is a high prevalence of musculoskeletal disorders among diabetic pa-tients. There was poor knowledge that upper limb musculoskeletal problems could occur due to diabetes, and a small percentage of patients sought physical therapy treatment for these disor-ders. Keywords: diabetes mellitus, musuculoskeletal diseases, upper extremity

A rare presentation of blastomycosis as a multi-focal infection involving the spine, pleura, lungs, and psoas muscles in a Saudi male patient: a case report

Background

Blastomycosis is a disease caused by the fungus Blastomyces—a thermally dimorphic fungus that can cause granulomatous and/or purulent infection.

Case presentation

We report here a case of chronic blastomycosis infection in a 24-year-old male patient from Saudi Arabia who presented with recurrent skin abscesses associated with deep-seated and multilevel paraspinal (dorsal and lumbar) collections and bilateral empyema with pulmonary involvement and bilateral psoas abscesses. The diagnosis was made after a CT-guided pleural biopsy revealed the characteristic histopathological findings of blastomycosis. The patient underwent several drainage procedures and was successfully treated with a long-term course of oral itraconazole.

Conclusions

Chronic blastomycosis may have clinical and radiologic features similar to thoracic tuberculosis or malignant disease. There is no definite clinical symptom of blastomycosis, and thus a high degree of suspicion is required for early diagnosis. This case is a rare form of blastomycosis with chronic multifocal purulent infection and is the second case of blastomycosis reported in Saudi Arabia.

257 Comparing Practice Testing to Restudying in the Dissecting Room: An Experimental Study

Aim

Medical students employ many strategies for learning, most commonly restudying. However, evidence suggests that restudying is not as effective as other strategies, namely practice testing. Different studies have compared restudying to practice testing on a variety of subjects. Few studies have assessed the effect of practice testing in anatomy courses. To the best of the authors' knowledge, no studies have investigated practice testing in the dissecting room (DR). In this study, we aim to measure the effect of practice testing in a DR setting, as compared to restudying.

Method

Second-year medical students learning the cardiovascular system were included in the study. Two groups were randomly selected to participate in practice tests taken at the end of DR sessions. The other two groups were asked to restudy the material. At the end of the four-week course, all students took a 15 points multiple-choice exam on learned material. Authors of practice tests were blind to the final exam content and vice versa.

Results

One hundred eight students participated in the study. Fifty-three students were in the practice testing group, and 55 were in the restudying group. The practice testing group performed significantly better than the restudying group (p = .008), with a mean of 8.57 +/- 2.3 for the practice testing group and 7.27 +/- 2.6 for the restudying group.

Conclusions

Practice testing significantly improved retention of Anatomy. We recommend that practice testing is implemented regularly at the end of DR sessions to enhance the learning experience.

206 Longevity of Deep Brain Stimulation Batteries at a Tertiary Neurosurgical Centre

Introduction

Deep brain stimulation (DBS) is a surgery used in the treatment of movement disorders. It involves surgical placement of electrodes in the brain that are connected to a battery-powered stimulator to regulate brain activity. DBS has been used successfully in the management of Parkinson's disease (PD). It has improved patients' movement and quality of life. However, one inconvenience is the limited battery life and the need for battery change to prevent deterioration in function. In this audit, we measured the longevity of DBS batteries in PD at a tertiary neurosurgical centre.

Method

A retrospective audit on the longevity of DBS batteries in 86 Patients with PD. We collected data on; date and position of device implant, type of battery used (rechargeable vs non-rechargeable), and the two most recent battery changes. We excluded battery changes that were due to infection.

Results

86 patients had DBS batteries. 21 patients had rechargeable batteries (Abbot Brio, Medtronic Activa RC and Boston Gevia), and 65 had non-rechargeable batteries (Abbot Infinity, Abbot Libra XP, Medtronic Activa PC). 53 patients have undergone a battery change, 49 of those were non-rechargeable batteries. Average battery life of non-rechargeable batteries was 3.06 ± .55 years in Infinity (n = 16), 4.0 ± 1.7 years in Libra XP(n = 22), and 4.6± .9 years in Activa PC (n = 11).

Conclusions

All three types of non-rechargeable batteries are lasting less than five years. Activa PC batteries had the lengthiest battery life of 4.6± .9 years, while infinity had the shortest battery life of 3.06± .55 years.

Effectiveness of Decision Aid in Men with Localized Prostate Cancer: a Multicenter Randomized Controlled Trial at Tertiary Referral Hospitals in an Asia Pacific Country

There are several treatment options for localized prostate cancer with very similar outcome but vary in terms of technique and side effect profiles and risks. Considering the potential difficulty in choosing the best treatment, a patient decision aid (PDA) is used to help patients in their decision-making process. However, the use and applicability of PDA in a country in Asia Pacific region like Malaysia is still unknown. This study aims to evaluate the effectiveness of a PDA modified to the local context in improving patients' knowledge, decisional conflict, and preparation for decision making among men with localized prostate cancer. Sixty patients with localized prostate cancer were randomly assigned to control and intervention groups. A self-administered questionnaire, which evaluate the knowledge on prostate cancer (23 items), decisional conflict (10 items) and preparation for decision-making (10 items), was given to all participants at pre- and post-intervention. Data were analyzed using independent T test and paired T test. The intervention group showed significant improvement in knowledge (p = 0.02) and decisional conflict (p = 0.01) from baseline. However, when compared between the control and intervention groups, there were no significant differences at baseline and post-intervention on knowledge, decisional conflict and preparation for decision-making. A PDA on treatment options of localized prostate cancer modified to the local context in an Asia Pacific country improved patients' knowledge and decisional conflict but did not have significant impact on the preparation for decision-making. The study was also registered under the Australian New Zealand Clinical Trials Registry (ANZCTR), ACTRN12614000668606 registered on 25/06/2014.

Chronic Pulmonary Aspergillosis and Type 2 Diabetes Mellitus Complicating Granulomatosis with Polyangiitis in an Adult Saudi Male: A Case Report

Background

Granulomatosis with polyangiitis (GPA) is an extremely rare autoimmune, necrotizing granulomatous disease of unknown etiology affecting small and medium-sized blood vessels. Chronic pulmonary aspergillosis (CPA) is a rare fungal infection with high morbidity and mortality that usually affects immunocompetent or mildly immunosuppressed patients with underlying respiratory disease. Antifungal agents (voriconazole, itraconazole) are the mainstay of therapy. Intravenous drug therapy (amphotericin B or an echinocandin), alone or in combination with azoles, is the last resort in special situations such as azole failure, resistance, or severe disease. Sometimes CPA and GPA coexist and are difficult to distinguish due to the nonspecific symptoms and similarity of clinical and radiological features, so a high degree of suspicion is required to make the correct diagnosis.

Case Presentation

We reported that a 28-year-old man from Saudi Arabia was diagnosed with GPA. The patient had been complaining of cough, fatigue, polyarthralgia and red eyes for 40 days before he was admitted to our hospital. The diagnosis of GPA was confirmed by clinical and radiological examinations and a pathological report of a lung biopsy, and he was treated with immunosuppressive drugs. The patient’s condition was complicated by chronic pulmonary aspergillosis and type 2 diabetes mellitus. Initial treatments included systemic glucocorticoids, methotrexate, followed by rituximab and voriconazole, finally intravenous cyclophosphamide and amphotericin B, with no complete remission. The thoracic surgical team postponed surgical debridement of the significant cavitary lung lesions until the active fungal infection could be brought under control.

Conclusion

The clinical and radiological features of GPA are similar to those of pulmonary tuberculosis, chronic pulmonary aspergillosis, and lung cancer. The lack of clear clinical symptoms of GPA requires a high degree of suspicion for early diagnosis. This case illustrates the dilemma of diagnosis and treatment of GPA and superimposed fungal infection. Secondary infection, particularly fungal infection, must be considered when GPA cannot be controlled with an immunosuppressant.

Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, treatment and follow-up of patients with renal cell carcinoma

The most recent version of the European Society for Medical Oncology (ESMO) Clinical Practice Guidelines for the diagnosis, treatment and follow-up of renal cell carcinoma was published in 2019 with an update planned for 2021. It was therefore decided by both the ESMO and the Singapore Society of Oncology (SSO) to convene a special, virtual guidelines meeting in May 2021 to adapt the ESMO 2019 guidelines to take into account the ethnic differences associated with the treatment of renal cell carcinomas in Asian patients. These guidelines represent the consensus opinions reached by experts in the treatment of patients with renal cell carcinoma representing the oncological societies of China (CSCO), India (ISMPO), Japan (JSMO), Korea (KSMO), Malaysia (MOS), Singapore (SSO) and Taiwan (TOS). The voting was based on scientific evidence and was independent of the current treatment practices and drug access restrictions in the different Asian countries. The latter were discussed when appropriate.

Postoperative outcomes in oesophagectomy with trainee involvement

BACKGROUND

The complexity of oesophageal surgery and the significant risk of morbidity necessitates that oesophagectomy is predominantly performed by a consultant surgeon, or a senior trainee under their supervision. The aim of this study was to determine the impact of trainee involvement in oesophagectomy on postoperative outcomes in an international multicentre setting.

METHODS

Data from the multicentre Oesophago-Gastric Anastomosis Study Group (OGAA) cohort study were analysed, which comprised prospectively collected data from patients undergoing oesophagectomy for oesophageal cancer between April 2018 and December 2018. Procedures were grouped by the level of trainee involvement, and univariable and multivariable analyses were performed to compare patient outcomes across groups.

RESULTS

Of 2232 oesophagectomies from 137 centres in 41 countries, trainees were involved in 29.1 per cent of them (n = 650), performing only the abdominal phase in 230, only the chest and/or neck phases in 130, and all phases in 315 procedures. For procedures with a chest anastomosis, those with trainee involvement had similar 90-day mortality, complication and reoperation rates to consultant-performed oesophagectomies (P = 0.451, P = 0.318, and P = 0.382, respectively), while anastomotic leak rates were significantly lower in the trainee groups (P = 0.030). Procedures with a neck anastomosis had equivalent complication, anastomotic leak, and reoperation rates (P = 0.150, P = 0.430, and P = 0.632, respectively) in trainee-involved versus consultant-performed oesophagectomies, with significantly lower 90-day mortality in the trainee groups (P = 0.005).

CONCLUSION

Trainee involvement was not found to be associated with significantly inferior postoperative outcomes for selected patients undergoing oesophagectomy. The results support continued supervised trainee involvement in oesophageal cancer surgery.

Mortality from esophagectomy for esophageal cancer across low, middle, and high-income countries: An international cohort study

BACKGROUND

No evidence currently exists characterising global outcomes following major cancer surgery, including esophageal cancer. Therefore, this study aimed to characterise impact of high income countries (HIC) versus low and middle income countries (LMIC) on the outcomes following esophagectomy for esophageal cancer.

METHOD

This international multi-center prospective study across 137 hospitals in 41 countries included patients who underwent an esophagectomy for esophageal cancer, with 90-day follow-up. The main explanatory variable was country income, defined according to the World Bank Data classification. The primary outcome was 90-day postoperative mortality, and secondary outcomes were composite leaks (anastomotic leak or conduit necrosis) and major complications (Clavien-Dindo Grade III - V). Multivariable generalized estimating equation models were used to produce adjusted odds ratios (ORs) and 95% confidence intervals (CI95%).

RESULTS

Between April 2018 to December 2018, 2247 patients were included. Patients from HIC were more significantly older, with higher ASA grade, and more advanced tumors. Patients from LMIC had almost three-fold increase in 90-day mortality, compared to HIC (9.4% vs 3.7%, p < 0.001). On adjusted analysis, LMIC were independently associated with higher 90-day mortality (OR: 2.31, CI95%: 1.17-4.55, p = 0.015). However, LMIC were not independently associated with higher rates of anastomotic leaks (OR: 1.06, CI95%: 0.57-1.99, p = 0.9) or major complications (OR: 0.85, CI95%: 0.54-1.32, p = 0.5), compared to HIC.

CONCLUSION

Resections in LMIC were independently associated with higher 90-day postoperative mortality, likely reflecting a failure to rescue of these patients following esophagectomy, despite similar composite anastomotic leaks and major complication rates to HIC. These findings warrant further research, to identify potential issues and solutions to improve global outcomes following esophagectomy for cancer.

Comparison of short-term outcomes from the International Oesophago-Gastric Anastomosis Audit (OGAA), the Esophagectomy Complications Consensus Group (ECCG), and the Dutch Upper Gastrointestinal Cancer Audit (DUCA)

BACKGROUND

The Esophagectomy Complications Consensus Group (ECCG) and the Dutch Upper Gastrointestinal Cancer Audit (DUCA) have set standards in reporting outcomes after oesophagectomy. Reporting outcomes from selected high-volume centres or centralized national cancer programmes may not, however, be reflective of the true global prevalence of complications. This study aimed to compare complication rates after oesophagectomy from these existing sources with those of an unselected international cohort from the Oesophago-Gastric Anastomosis Audit (OGAA).

METHODS

The OGAA was a prospective multicentre cohort study coordinated by the West Midlands Research Collaborative, and included patients undergoing oesophagectomy for oesophageal cancer between April and December 2018, with 90 days of follow-up.

RESULTS

The OGAA study included 2247 oesophagectomies across 137 hospitals in 41 countries. Comparisons with the ECCG and DUCA found differences in baseline demographics between the three cohorts, including age, ASA grade, and rates of chronic pulmonary disease. The OGAA had the lowest rates of neoadjuvant treatment (OGAA 75.1 per cent, ECCG 78.9 per cent, DUCA 93.5 per cent; P < 0.001). DUCA exhibited the highest rates of minimally invasive surgery (OGAA 57.2 per cent, ECCG 47.9 per cent, DUCA 85.8 per cent; P < 0.001). Overall complication rates were similar in the three cohorts (OGAA 63.6 per cent, ECCG 59.0 per cent, DUCA 62.2 per cent), with no statistically significant difference in Clavien-Dindo grades (P = 0.752). However, a significant difference in 30-day mortality was observed, with DUCA reporting the lowest rate (OGAA 3.2 per cent, ECCG 2.4 per cent, DUCA 1.7 per cent; P = 0.013).

CONCLUSION

Despite differences in rates of co-morbidities, oncological treatment strategies, and access to minimal-access surgery, overall complication rates were similar in the three cohorts.

The pedicled submental flap in facial reconstruction

Submental flap (SF) is a reconstructive technique that can be utilised for reconstruction of medium to large oral cavity defects, head and neck cancer, and pharyngocutaneous fistula. The submental artery island flap is pedicled on the submental artery and veins. The vascular pedicle has a length of up to 8cm. If it is further dissected to its origin from the facial artery, the pedicle can be lengthened by an additional 1-2cm to reach the lateral canthus and zygomatic arch. The use of SF for the reconstruction of head and neck defects has re-emerged over the past decade due to various reasons. We present a series of four case reports of head and neck cancers including a basal cell carcinoma, squamous cell carcinoma, and Merkel tumour, where the SF technique was used to successfully reconstruct the resultant facial defect. The advantages and disadvantages of the SF are discussed with a brief literature review.

Impact of morphine treatment with and without metoclopramide co-administration on myocardial and microvascular injury in acute myocardial infarction: insights from a randomized trial

Background

Intravenous morphine administration in patients with acute myocardial infarction (AMI) can adversely affect platelet inhibition induced by P2Y12 receptor antagonists, potentially resulting in an increased risk of adverse clinical events. In contrast, some evidence suggests that opioid agonists may have cardioprotective effects on the myocardium. Currently available data in this regard are, however, sparse, inconsistent, and methodologically limited.

Purpose

The aim of this study was to investigate the impact of morphine with or without metoclopramide (MCP) co-administration on myocardial and microvascular injury after AMI assessed by cardiac magnetic resonance (CMR).

Methods

This prospective, randomized, single-center study assigned 138 patients with AMI in a 1:1:1 ratio to (a) ticagrelor 180 mg plus intravenous morphine 5 mg (morphine group); (b) ticagrelor 180 mg plus intravenous morphine 5 mg and MCP 10 mg (morphine + MCP group); or (c) ticagrelor 180 mg plus intravenous placebo (control group). Study drugs were administered before primary percutaneous coronary intervention. CMR was performed in 101 patients on day 1–4 after the index event to assess infarct size, microvascular obstruction, and left ventricular ejection fraction.

Results

Infarct size was significantly smaller in the morphine only group as compared to controls (15.5%LV [IQR 5.0 to 21.4%LV] vs. 17.9%LV [IQR 12.3 to 32.9%LV]; p=0.047). Furthermore, the number of patients with microvascular obstruction was significantly lower after morphine administration (10/36 [28%] versus 21/39 [54%]; p=0.022) and the extent of microvascular obstruction was smaller (0%LV [0 to 1.40%LV] versus 0.74%LV [0 to 3.10%LV]; p=0.037). In multivariable regression analysis, morphine administration was independently associated with a reduced risk for the occurrence of microvascular obstruction (odds ratio 0.37; 95% confidence interval 0.14 to 0.93; p=0.035). Left ventricular ejection fraction did not differ significantly between the morphine and the control group (p=0.970) and there was no significant difference in left ventricular ejection fraction (p=0.790), infarct size (p=0.491), and extent (p=0.753) or presence (p=0.914) of microvascular obstruction when comparing the morphine + MCP group to the control group.

Conclusions

In this randomized study, intravenous administration of morphine prior to primary percutaneous coronary intervention resulted in a significant reduction of myocardial and microvascular damage following AMI. This potential cardioprotective effect of morphine requires further evaluation in well-designed future trials with clinical endpoints.

Funding Acknowledgement

Type of funding source: None

Insights on toxin genotyping, virulence, antibiogram profiling, biofilm formation and efficacy of disinfectants on biofilms of Clostridium perfringens isolated from poultry, animals and humans

AIMS

This study aimed to determine the toxin genotypes, virulence determinants and antibiogram of Clostridium perfringens isolated from poultry, animals and humans. Biofilm formation and the efficacy of disinfectants on C. perfringens biofilms were studied.

METHODS AND RESULTS

Thirty C. perfringens isolates (20 clinical and 10 from chicken carcasses) were genotyped by PCR and all isolates were genotype A (cpa+). The overall prevalence of cpe, cpb2, netB and tpeL virulence genes was 6·7, 56·7, 56·7 and 36·7% respectively. Twenty-one isolates (70%) were multidrug-resistant, 8 (26·7%) were extensive drug-resistant and one isolate (3·3%) was pan drug-resistant. The average multiple antibiotic resistance index was 0·7. Biofilms were produced by 63·3% of C. perfringens isolates and categorized as weak (36·7%), moderate (16·7%) and strong (10%). Sodium hypochlorite caused significant reduction in C. perfringens biofilms (P < 0·0001).

CONCLUSIONS

All C. perfringens strains in this study were type A, resistant to multiple antibiotics and most of them were biofilm producers. Sodium hypochlorite showed higher efficacy in reducing C. perfringens biofilms.

SIGNIFICANCE AND IMPACT OF THE STUDY

This study reported the efficacy of disinfectants in reducing C. perfringens biofilms of economic and public health concern and recommends application on surfaces in farms, food processing plants and slaughterhouses.

A very severe case of rhinophyma requiring a three-stage reconstruction with a forehead flap

Rhinophyma is a skin condition that affects the nose. It is often characterised by a large, red, bulbous nose. It can have a physical, psychological and social impact on the patient. Management options include conservative medical therapy such as retinoids or surgical excision followed by reconstruction as required. The reconstruction options can range from a dermal substitute full-thickness skin graft to local flaps, depending on the wound bed. We present a severe case of rhinophyma that required a complex reconstruction with a three-stage forehead flap because of the mass effect and the wound that resulted from the surgical excision of an extremely large and troublesome rhinophyma.

Perioperative intravenous contrast administration and the incidence of acute kidney injury after major gastrointestinal surgery: prospective, multicentre cohort study

BACKGROUND

This study aimed to determine the impact of preoperative exposure to intravenous contrast for CT and the risk of developing postoperative acute kidney injury (AKI) in patients undergoing major gastrointestinal surgery.

METHODS

This prospective, multicentre cohort study included adults undergoing gastrointestinal resection, stoma reversal or liver resection. Both elective and emergency procedures were included. Preoperative exposure to intravenous contrast was defined as exposure to contrast administered for the purposes of CT up to 7 days before surgery. The primary endpoint was the rate of AKI within 7 days. Propensity score-matched models were adjusted for patient, disease and operative variables. In a sensitivity analysis, a propensity score-matched model explored the association between preoperative exposure to contrast and AKI in the first 48 h after surgery.

RESULTS

A total of 5378 patients were included across 173 centres. Overall, 1249 patients (23·2 per cent) received intravenous contrast. The overall rate of AKI within 7 days of surgery was 13·4 per cent (718 of 5378). In the propensity score-matched model, preoperative exposure to contrast was not associated with AKI within 7 days (odds ratio (OR) 0·95, 95 per cent c.i. 0·73 to 1·21; P = 0·669). The sensitivity analysis showed no association between preoperative contrast administration and AKI within 48 h after operation (OR 1·09, 0·84 to 1·41; P = 0·498).

CONCLUSION

There was no association between preoperative intravenous contrast administered for CT up to 7 days before surgery and postoperative AKI. Risk of contrast-induced nephropathy should not be used as a reason to avoid contrast-enhanced CT.

P1438Predictors and clinical impact of bleeding events after left atrial appendage closure in patients with high risk or a history of bleeding

Background

Left atrial appendage closure (LAAC) has emerged as an alternative to oral anticoagulation (OAC) for stroke prevention in patients with atrial fibrillation and may be especially attractive in patients with high risk or a history of bleeding. However, data of clinical benefit and incidence of post-procedural bleeding in patients with both high risk of bleeding and ischemic cerebral stroke after LAAC are lacking.

Objectives

This study sought to identify predictors and the prognostic impact of post-LAAC bleeding in patients at high risk and/or history of bleeding in the direct oral anticoagulant therapy (DOAC) era.

Methods and results

We retrospectively enrolled a total of 195 patients (75 ± 8.7 years, 38% female, 47% with previous major bleeding, mean CHA2DS2-VASc score 4.3 ± 1.6 and mean HAS-BLED score 2.7 ± 1.1) undergoing endocardial (91%) or epicardial (9%) LAAC during a mean follow-up of 339 ± 319 days. Twenty-three (11.9%) patients developed procedure-unrelated bleeding events after a median of 147 (43, 362) days after LAAC, in 12/23 (52%) patients under single antiplatelet therapy (SAPT), 6/23 (26%) dual antiplatelet therapy (DAPT), 1/23 (4%)  DOAC, 1/23 (4%) VKA, 2/23 (9%) dual therapy (SAPT and DOAC/VKA) and 1/23 (4%) triple therapy (DAPT and DOAC/VKA). (Figure) Diabetes mellitus and previous major bleeding were identified as the independent predictors of post-LAAC bleeding (Odds ratio 2.65 [95% CI:1.04-6.73], p = 0.041, and 5.50 [95% confidence interval:1.72-17.5], p = 0.004). Post-LAAC bleeding was associated with all-cause death (9/23 [39%] vs 18/171 [11%], p = 0.001), but not ischemic stroke/TIA (1/23 [4%] vs 6/171 [4%], p = 0.593) nor device thrombus (2/23 [9%] vs 3/171 [2%], p = 0.108). Kaplan-Meier curve estimated that patients with post-LAAC bleeding had a worse mortality than those without post-LAAC bleeding (3-year mortality; 35.6% [95%CI; 11.6-61.0%] vs 68.7% [45.0-83.8], p = 0.029)

Conclusions

In AF patients with high bleeding risk or history of bleeding undergoing LAAC, bleeding events are common and may occur even after long-term duration after LAAC. Previous major bleeding history strongly predicts subsequent bleeding events following LAAC and is associated with unfavorable mortality. Further investigations are required to identify optimal post-procedural antithrombotic strategies for patients undergoing LAAC with previous major bleeding.

Abstract Figure. The association between time to bleeding

193 Effect of clinical metritis on oocyte recovery, oocyte quality, and early invitro developmental competence of embryos in Bos indicus dairy cattle

Unhygienic practices at the time of parturition or AI lead to uterine infections. The uterine infections ultimately result in genetic drain by culling the elite animals. The invivo developmental competence of embryos is compromised in clinically metritic animals. The genetic potential of problematic females could be harvested by invitro embryo production (IVEP). Therefore, the objective of the present study was to evaluate the effect of clinical metritis on oocyte recovery, oocyte quality, and early invitro developmental competence of embryos in Bos indicus dairy cattle. This experiment was carried out from December 2017 to April 2018. Ovaries were collected from a local abattoir (Bos indicus; 5- to 8-year-old dairy cattle, body condition score 2.75±0.25, mixed parity). These ovaries (n=982) were divided into two groups: (1) clinically metritic (n=184), and (2) healthy (n=798), based upon the presence or absence of pus in the uterine lumen. Oocytes were aspirated from follicles using an 18G needle attached to a 10-mL syringe. Cumulus-oocyte complexes (COCs) were categorized into A, B, C, and D grades based on the number of layers of cumulus cells and integrity of ooplasm. The oocytes of grades A and B were subsequently transferred in groups (10/group) in four-well plates containing 100-μL droplets. The droplets with oocytes were covered with prewarmed mineral oil and incubated for 24h at 38.5°C, 5% CO2, and 95% relative humidity. The oocytes were evaluated for IVM on the basis of cumulus expansion. Frozen semen was thawed and prepared using the sperm swim-up procedure for each group. Spermatozoa and oocytes were incubated together for a period of 18h. The presumptive zygotes were invitro cultured for 4 days in a CO2 incubator under similar culture conditions. The cleavage rate, 4-cell, and 8-cell stages were recorded on Days 2, 3, and 4 after the day of insemination, respectively. Data on oocyte recovery, oocyte quality, IVM, cleavage rate, and 4-cell and 8-cell stages were analysed by Chi-squared test using SPSS software (version 20; IBM Corp.) for Windows. Results demonstrated that recovery rate was lower (63.8% vs. 71.7%; P&lt;0.05) in clinically metritic compared with healthy cattle. Similarly, oocytes of grade A and B quality were lower (41.0% vs. 51.1%; P&lt;0.05), whereas those of C and D quality were higher (59.0% vs. 48.9%; P&lt;0.05) in clinically metritic compared with the healthy group. Moreover, 4-cell (38.2% vs. 54.8%) and 8-cell stage embryos (11.3% vs. 29.1%), were lower (P&lt;0.05) in the clinically metritic compared with the healthy group, respectively. However, maturation rate and cleavage rate did not differ (P&gt;0.05) between groups. In conclusion, metritis in slaughterhouse ovaries negatively affects oocyte recovery rate, oocyte quality, and early invitro developmental competence of embryos in Bos indicus dairy cattle.

P4724Elevated mitral valve pressure gradient is predictive for long-term outcome after percutaneous edge-to-edge mitral valve repair (PMVR) in patients with degenerative MR, but not in functional MR

Background

To analyze the effects of residual mitral regurgitation (MR) and mean mitral valve pressure gradient (MVPG) after percutaneous edge-to-edge mitral valve repair (PMVR) using the MitraClip-system on long term outcome.

Methods and results

Two hundred fifty-five patients who underwent PMVR were analyzed. Kaplan-Meier and Cox regression analyses were performed to evaluate the impact of residual MR and MVPG on clinical outcome. A combined clinical endpoint (all-cause mortality, MV surgery, redo procedure, implantation of a left ventricular assist device) was used.

After PMVR, mean MVPG increased from 1.6±1.0 mmHg to 3.1±1.5 mmHg (p<0.001). Reduction of MR severity to ≤2+ postintervention was achieved in 98.4% of all patients. In the overall patient cohort, residual MR was predictive for the combined endpoint while elevated MVPG >4.4 mmHg was not according to Kaplan-Meier and Cox regression analyses. We then analyzed the cohort with degenerative and that with functional MR separately to account for these different entities.In the cohort with degenerative MR, elevated MVPG was associated with increased occurrence of the primary endpoint, whereas this was not observed in the cohort with functional MR.

Conclusions

MVPG >4.4 mmHg after MitraClip-implantation was predictive for clinical outcome in the patient cohort with degenerative MR. In the patient cohort with functional MR, MVPG >4.4 mmHg was not associated with increased clinical events.

Acknowledgement/Funding

This study was supported by grants from the German Research Foundation (KFO 274), the Volkswagen Foundation (Lichtenberg Program) and the German Heart

143 Effect of corpus luteum on recovery rate, quality, and in vitro developmental competence of oocytes in Bos indicus dairy cows

Assisted reproductive technologies have modernized the dairy industry for the rapid multiplication of superior genetic traits. However, the exploitation of genetics through in vitro embryo production in farm animals has been struggling during the last 3 decades. The presence or absence of a corpus luteum (CL) on ovaries from which cumulus-oocyte complexes were recovered has been shown to affect the quality of oocytes and in vitro embryo production outcome in Bos taurus cows. Similar information is lacking in Bos indicus cows. Therefore, the objectives of the present study were to determine the effect of presence or absence of a CL on recovery rate, quality, and in vitro developmental competence of oocytes in Bos indicus dairy cows. This study was conducted from December 2017 to April 2018. The ovaries were harvested from a local abattoir (Bos indicus; 5- to 8-year-old cows having mixed parity with clinically normal reproductive tracts). These ovaries (n=750) were divided into 2 groups [(1) CYCLIC (n=318) and (2) ACYCLIC (n=432)] based on the presence or absence of mature CL having follicles on either left or right ovaries of slaughtered cows. Blood samples from the jugular vein were collected at slaughter. Serum concentrations of progesterone of CYCLIC and ACYCLIC cows were measured using radioimmunoassay. Mean number of recovered oocytes per ovary and serum concentration of progesterone were compared using PROC TTEST model. However, quality, maturation, cleavage, 8-cell, 16-cell, and morula rates were analysed by PROC FREQ model of Chi-squared. All the data was analysed using SAS (SAS Institute Inc., Cary, NC, USA). Results revealed that the mean serum concentrations of progesterone (4.21±0.4v. 0.5±0.2ng mL−1; P&lt;0.05) were higher in CYCLIC as compared with ACYCLIC cows, respectively. The mean number of oocytes recovered per ovary (6.5±4.5v. 4.0±4.4; P&lt;0.05) was higher in CYCLIC than in ACYCLIC cows. The oocytes with grade I+II quality (55.3v. 47.6%; P&lt;0.05) were higher, whereas oocytes with grade III+IV quality (44.5v. 52.4%; P&lt;0.05) were lower, in CYCLIC as compared with ACYCLIC cows, respectively. Furthermore, cleavage rate (70.9v. 52.8%; P&lt;0.05) was higher in CYCLIC than in ACYCLIC cows, respectively. Similarly, the 8-cell (38.5v. 20.8%; P&lt;0.05) and 16-cell (20.0v. 10.9%; P&lt;0.05) stage embryos were greater in CYCLIC as compared with ACYCLIC cows, respectively. In conclusion, the presence of CL has a beneficial effect on recovery rate, quality, and in vitro embryo production outcomes in Bos indicus dairy cows. It is implied that for ovum pickup, cyclic cows should be preferred.

142 Effect of follicular size on oocyte recovery rate, quality, and in vitro developmental competency following maturation, fertilization, and culturing in Bos indicus cows

Applied reproductive technologies include AI, multiple ovulation and embryo transfer, IVF, cloning, ovum pickup, and zygote intra-fallopian tube transfer in farm animals. Modern commercialized dairy farming is ever more relying on in vitro embryo production for maximal utilisation of superior genetics of female animals. Follicular size influenced the quality of the oocytes and their in vitro developmental competence in Bos taurus cows. However, this information is lacking in Bos indicus cows. Therefore, the objectives of the present study were to determine the effect of follicular size on recovery rate, quality, and in vitro developmental competence of the oocytes in Bos indicus cows. The ovaries (n=508) of 5- to 8-years-old Bos indicus cows, body condition score 2.75±0.25, having mixed parity and clinically normal reproductive tracts, were collected. These follicles on the ovaries were divided into 2 groups based on their size: (1) &lt;6mm diameter and (2) ≥6mm diameter. The data on recovery; quality; maturation; cleavage rates; 4-cell, 8-cell, and 16-cell stages; and morula rate were analysed by Chi-squared test using SPSS version 20 software (IBM Corp., Armonk, NY, USA, 2016) system for windows. Results revealed that oocytes with grade I+II quality (68.4v. 42.1%; P&lt;0.05) were higher, whereas grade III+IV quality (31.6v. 57.5%; P&lt;0.05) were lower, in ≥6mm as compared with &lt;6mm groups, respectively. Moreover, the 4-cell (34.5v. 18.7%), 8-cell (15.4v. 7.7%), 16-cell (8.7v. 2.2%) stages and morula rate (4.5v. 0.3%) were higher (P&lt;0.05) in ≥6mm as compared with &lt;6mm groups, respectively. However, the maturation and cleavage rates did not differ (P&gt;0.05) between both groups. It is concluded that oocytes having follicle size ≥6mm have better quality in terms of morphological grades and in vitro developmental competence in Bos indicus cows. It is implied that for maximum production of embryos through ovum pickup, the most appropriate follicular size for aspiration is ≥6 mm.

Secondary intraocular lens implantation with absence of capsular support: Scleral versus iris fixation

PURPOSE

To assess the outcomes of iris fixated (IF) posterior chamber (PC) intraocular lens (IOL) versus scleral-fixated (SF) PC IOL implantation, and compare them with the results reviewed from the literature.

SETTING

The study took place in the ophthalmology department of the Eye and Ear Hospital (Lebanon).

DESIGN

This is a retrospective institutional study that collected the records of patients admitted for secondary IOL implantation between January 2007 and December 2016.

METHODS

A total of 28 eyes that underwent PC IOL fixation were included, 13 of which underwent trans-scleral PC IOL fixation and 15 of which underwent iris PC IOL fixation. Data were analyzed over a period of 3 years.

RESULTS

Of the 28 patients, 18 (64.3%) were male and 10 (35.7%) were female (mean age at intervention 36.78±23.47 [standard deviation, SD] years). There were no significant intergroup differences with regard to baseline values and demographic characteristics. Trauma was the most common etiology for posterior capsule insufficiency (82.1%). The mean preoperative baseline BCVA was 0.58±0.27 logMAR for SF and 0.27±0.20 logMAR for IF (P=0.07). Both groups had significant improvement in vision during the follow up period. No significant differences were noted regarding early or late postoperative complications between the two groups.

CONCLUSION

SF and IF techniques for PC IOL have similar outcomes and result in a significant improvement in BCVA. When compared to AC (anterior chamber) IOL, both techniques seem to yield fewer complications.