Acquired thrombotic thrombocytopenic purpura (aTTP) is a rare hematological emergency characterized by microangiopathic hemolytic anemia, thrombocytopenia, fever, and multiorgan failure due to autoimmune-mediated deficiency in ADAMTS-13 activity. Currently, plasma exchange, with or without steroids, is the frontline option for the management of aTTP. The treatment should be started promptly once the disorder is clinically suspected. Besides, immunomodulators were studied in patients with aTTP to achieve stable remission and reduce the risk of relapse in patients with suboptimal response to plasma exchange; however, clinical trials showed equivocal results. Published data on early diagnosis, referral, and treatment patterns of aTTP patients in the member nations of the Arabian Gulf Cooperation Council (GCC) are still lacking. Therefore, the present consensus report aimed to present an overview of aTTP situation in GCC by bringing together a panel of experts from three GCC nations, to share their views on current trends and practices regarding aTTP. The experts discussed challenges including the lack of reliable data regarding the incidence of aTTP in GCC and delayed results of ADAMTS-13 activity testing. Limited patient access to tertiary centers and low level of awareness about the aTTP clinical spectrum among general practitioners are other challenges. The experts agreed that there is a need for national and regional consensus regarding the diagnosis and treatment of aTTP in the Gulf region.

The emergence of methicillin-resistant Staphylococcus aureus (MRSA) has increased and become a serious concern worldwide, including India. Additionally, MRSA isolates are showing resistance to other chemotherapeutic agents. Isolated and valuable reports on the prevalence of MRSA are available in India. There is no systematic review on the prevalence of MRSA in one place; hence, this study was planned. The overall prevalence of MRSA in humans in India was evaluated state-wise, zone-wise, and year-wise. A systematic search from PubMed, Indian journals, Google Scholar, and J-Gate Plus was carried out and retrieved 98 eligible articles published from 2015 to 2020 in India. The statistical analysis of data was conducted using R software. The overall prevalence of MRSA was 37% (95% CI: 32–41) from 2015 to 2019. The pooled prevalence of MRSA zone-wise was 41% (95% CI: 33–50), 43% (95% CI: 20–68), 33% (95% CI: 24–43), 34% (95% CI: 26–42), 36% (95% CI: 25–47), and 40% (95% CI: 23–58) for north, east, west, south, central, and northeast region-zones, respectively. The state-wise stratified results showed a predominance of MRSA in Jammu and Kashmir with 55% (95% CI: 42–67) prevalence, and the lowest was 21% (95% CI: 11–34) in Maharashtra. The study indicated that the prevalence data would help in formulating and strict implementation of control measures in hospital areas to prevent the outbreak of MRSA infection and management of
antibiotic usage.

Keywords: Antimicrobial resistance; Humans; India; Meta-analysis; Methicillin-Resistant; Staphylococcus aureus; Prevalence.

Objectives: This research aimed to study the seroconversion among frontline staff at the highest risk of exposure to SARS-CoV-2 infections, including emergency department, critical care, and COVID-19 isolation wards in all healthcare job categories. Methods: We conducted a prospective cohort study on the incidence of seroconversion among frontline health care workers (HCWs) at the Royal Hospital, Muscat, Oman. Two sera were collected 12 weeks apart to look for seroconversion. We used proportions with 95% confidence interval (CI) for categorical data and mean/median as appropriate for continuous data. Results: Fourteen out of 328 HCWs seroconverted in this study accounting for an incidence rate of 3.6%, excluding four HCWs that were positive at baseline. The median age was 43.5 (range = 28–57). About 75.0% of HCWs were between 31–49 years old, with a seroconversion rate of 4.9% (95% CI: 2.7–8.1). Females accounted for most seroconverted HCWs (14/257) at a rate of 5.4% (95% CI: 3.1–8.8). Omanis seroconverted with a rate of 6.4% (95% CI 2.6–12.8), whereas non-Omanis seroconverted at a rate 4.3% (95% CI: 2.2–7.5). Ninety-two percent (302/328) of the staff lived in the capital area, and a minority lived outside the capital (3/26). Thirteen Muscat citizens seroconverted at a rate of 4.3% (95% CI: 2.4–7.1). Nurses comprised the majority (accounting for about 81%) followed by doctors (19%) at rates of 5.6% (95% CI: 3.2–9.2) and 4.2% (95% CI: 1.07–10.9), respectively. Staff covering COVID-19 isolation wards and intensive care unit comprised over 60% (n = 10) of those who seroconverted with a rate of 5.4% (95% CI: 2.8–9.5) followed by infectious diseases doctors and adult emergency at 19.0% (n = 3) and 12.5% (n = 1), respectively. Approximately 81.3% (n = 13) of HCWs performed aerosol-generating procedures at a seroconversion rate of 4.3% (95% CI: 2.4–7.1). About 50.0% of those who seroconverted had a positive polymerase chain reaction (PCR) before seroconversion, 25.0% had a negative PCR before second serology testing, and 25.0% were not tested with PCR. Approximately 20.0% of seroconverted staff had no reported symptoms compared to 80.0% who reported symptoms such as sore throat (70.0%), fever (50.0%), myalgia (20.0%), and a less frequency (15.0%) runny nose, loss of smell, and headache. Conclusions: Detection of infection among HCWs is important to prevent further transmission, especially asymptomatic carriers. A combined screening strategy of symptoms, serology, and PCR might help detect potential infections and asymptomatic carriage.

Keywords: Health Personnel; Seroconversion; Seroepidemiologic Studies; SARS-CoV-2; COVID-19; Oman.

Objectives: COVID-19 associated coagulopathy and prophylactic anticoagulant therapy (PAT) are ongoing topics globally. Using PAT for anti-inflammatory effect may prevent thromboembolic events (TEEs). The objective of this study was to determine the anti-inflammatory effects of PAT in hospitalized COVID-19 patients. Methods: We conducted a retrospective observational study in a tertiary pandemic hospital. Patients were divided into two categories according to their PAT therapy status (PAT (+) and PAT (-)) and into three categories according to clinical features (mild: group 1; moderate: group: 2; and severe: group 3). We then evaluated laboratory parameters and clinical courses. Results: We included 662 hospitalized COVID-19 patients in this study. Enoxaparin sodium was given to all patients as PAT therapy. TEE was developed in five patients in the PAT (+) group. Pulmonary embolism developed in 3/5 patients and deep venous thrombosis in 2/5 patients. Disseminated intravascular coagulation (DIC) was detected in 54 patients in group 3. No statistically significant difference was found in 28-day mortality, development of DIC rates, intubation rates, and TEEs. Conclusions: The use of PAT in critically ill patients was not effective in reducing C-reactive protein, which is one of the biomarkers of inflammation.

Keywords: COVID-19; Anticoagulants; Anti-Inflammatory Agents.

Objectives: Peripheral intravenous (IV) access is a standard procedure in clinical settings. Nevertheless, previous studies have indicated that difficult peripheral IV access is prevalent in children. This study aimed to determine the prevalence and factors contributing to difficult peripheral IV cannulation in children admitted to a tertiary care hospital in Oman. Methods: This cross-sectional study was conducted from September to December 2015 at Sultan Qaboos University Hospital in Muscat, Oman. Nurses collected data concerning factors contributing to difficult IV access in children. Results: A total of 511 children undergoing cannulation during the study period were included in the analysis. Overall, 23.3% of the children experienced two or more cannulation attempts. The study identified three variables associated with successful cannulation in cases of difficult IV access. Visible veins were 2.72-times (95% CI: 1.58–4.68) more likely to be associated with success (p < 0.001), while palpable veins were 2.22-times (95% CI: 1.29–3.83) more likely to be associated with success (p = 0.004). However, scarring from previous IV access attempts was half (95% CI: 0.31–0.77) as likely to be associated with successful cannulation (p = 0.002). Conclusions: We identified statistically significant variables related to difficult IV cannulation in children, which we used to develop a prediction tool to assess the likelihood of difficult IV access in pediatric patients. Further research is necessary to validate the use of the difficult IV access prediction tool in this population.

Objectives: We sought to identify subgroups of psychiatric patients in a sample of patients admitted at a tertiary care hospital in Oman who received electroconvulsive therapy (ECT) based on their demographic and clinical outcomes. Methods: We retrospectively collected data from patients who received ECT at Al Massarah Hospital, Muscat, Oman, between January 2015 and December 2019. Sociodemographic characteristics, clinical profiles, and psychiatric comorbidities were examined. Results: A total of 179 psychiatric patients received ECT; 96 (53.6%) were females. The average age at diagnosis was 42.5 years. Two-step cluster analysis showed 70 (39.1%) patients in cluster one and 109 (60.9%) patients in cluster two. Patients in cluster one included more (61.4%) females, were older (mean = 55.2 years), married (95.7%), and unemployed (88.6%). They reported they had comorbidities (55.7%) and less frequent ECT use (mean = 8.7) than patients in cluster two. Clusters differences were found on gender (p = 0.001), age (p < 0.001), marital status (p < 0.001), and occupation (p = 0.001). Significant differences were found for diagnosis (p < 0.001), comorbid medical conditions (p < 0.001), and use of ECT sessions (p = 0.006). Conclusions: Psychiatric patients receiving ECT are heterogeneous, with different demographic and clinical outcomes. Our study has shown that patients in cluster one are older females, unemployed, with more comorbidities, and depressive disorders, but received fewer ECT sessions. This study provides important information for clinicians to identify strategies to promote the use of ECT on its effectiveness and safety issues for each group.

Keywords: Electroconvulsive Therapy; Schizophrenia; Cluster Analysis; Oman.

Objectives: Platelet refractoriness complicates the platelet transfusion, which is essential for managing thrombocytopenia in patients with hematological disorders. It is associated with adverse clinical outcomes and increased health care costs. We conducted a prospective study to determine the effectiveness of cross-matched compatible platelets in a group of patients refractory to platelets from random donors and to evaluate human leukocyte antigen (HLA)-mediated refractoriness. Methods: This prospective study was conducted on 40 patients with different hematological disorders requiring platelet transfusions who were refractory to random platelets and presented to the hematology unit of Alexandria's main university hospitals between May 2020 and March 2021. They received 60 ABO-compatible platelet transfusions, either leuco-reduced or random donor platelets, stored for no more than 72 hours. A solid-phase red cell adherence technique (SPRCA) was used for platelet crossmatching. The corrected count increment (CCI) was used to monitor the effectiveness of each platelet transfusion with a cut-off value of 5 × 103/µL at 1 hour and 2.5 × 103/µL at 24 hours. Anti-HLA antibodies were assessed using the enzyme-linked immunosorbent assay technique. Results: Out of 60 cross matches, 47 (78.3%) were compatible, and 13 (21.7%) were incompatible. Among 47 compatible results, 30 (63.8%) showed adequate CCI and 17 (36.2%) showed inadequate CCI at 1-hour post-transfusion. Among the incompatible results, 3 (23.1%) had adequate CCI and 10 (76.9%) had inadequate CCI. Significant improvements were found in the mean CCI when comparing cross-matched compatible platelets and incompatible platelets at 1hour or 24 hours (p = 0.009 and p < 0.001, respectively). From the 40 studied patients, HLA alloimmunization was present in 18 patients (45.0%) and absent in the remaining 22 patients (55.0%). In the absence of HLA alloimmunization, patients showed significantly better responses at 1 hour and 24 hours (p = 0.001 and p = 0.015, respectively). There was better sensitivity of platelet crossmatching with random donor platelet concentrates than single donor platelet concentrates. Conclusions: Platelet crossmatching using SPRCA and HLA screening are effective and rapid tools for better management of patients' refractory to platelet transfusions.

Keywords: Platelet Transfusion; Thrombocytopenia; Blood Grouping and Crossmatching.

Objectives: Resident physicians are particularly prone to sleep disturbance due to long shift hours and excessive workload. Despite the numerous measures undertaken to improve their wellbeing, it is still unknown if limiting the work shift duration would improve sleep quality. We sought to compare sleep quality, anxiety, and depression before and after implementing duty hour limits. We also aim to evaluate how satisfaction with life is related to sleep quality, anxiety, and depression. Methods: We used a self-reported questionnaire to obtain data about sleep quality, anxiety, and depression using the Pittsburgh Sleep Quality Index and Patient Health Questionnaire-4 (PHQ-4) scales, respectively. Using data from a previous study, we compared those parameters before and after implementing duty hour reduction across several specialties at King Abdullah University Hospital, Jordan. Furthermore, we investigated residents’ life satisfaction using the Satisfaction with Life Scale. Results: One hundred and eighty residents filled the questionnaire (median age = 26.5 years). Males reported higher rates of poor sleep quality while females had higher rates of anxiety and depression. Decreasing the duration of on-call shifts from 32 to 24 hours decreased the prevalence of poor sleep quality from 91.5% to 83.2% (p = 0.038), and smoking rates decreased from 30.4% to 12.5% (p < 0.001). More than six on-calls per month were associated with poorer quality of sleep. Night float shifts significantly decreased rates of moderate and severe PHQ-4 scores (p < 0.001). In addition, 63.3% of residents were satisfied with life. Life satisfaction was associated with enhanced sleep quality and lower PHQ-4 scores (p = 0.007 and p < 0.001, respectively). Conclusions: Optimizing shift scheduling and duration can positively influence rates of sleep quality, anxiety, depression, and smoking. More interventions should be tackled along with duty hour limits to optimize residents’ life satisfaction.

Keywords: Sleep Quality; Internship and Residency; Workload; Physicians; Work Schedule Tolerance.

Objectives: To study the quantum and pattern of the COVID-19-related medical research publications that had contributions from researchers in Oman, using bibliometric analysis. Methods: Data on the COVID-19-related medical research publications with contributions from authors in Oman were sourced from the Scopus database. The main search keywords were ‘COVID-19’ and ‘Oman’. The search included data from 1 December 2019 to 21 August 2021. A bibliometric method utilizing citation analysis and science mapping was applied to the selected data. VOSviewer software was used for constructing and visualizing various bibliometric networks. Results: The search query returned 360 documents which included those by authors from Oman. After excluding 83 of these due to irrelevance, 277 documents were finally selected for analysis. Three macro research themes emerged: treatment of COVID-19 cases, epidemiology and impact of COVID-19, and etiology and clinical manifestations of COVID-19. A total of 4533 sources were cited in the selected 277 documents. Most articles were published in the International Journal of Infectious Diseases (IJID), followed by  Oman Medical Journal, and Sultan Qaboos University Medical Journal. The most cited references included the Lancet, followed by the New England Journal of Medicine, and the Journal of the American Medical Association. The largest number of papers were authored by researchers from Sultan Qaboos University followed by the Oman Ministry of Health. Regarding the number of citations received per paper, the top rank went to the Ministry of Health, followed by Sultan Qaboos University Hospital and Khoula Hospital. Conclusions: Oman has significantly contributed to the COVID-19-related medical knowledge despite the challenges of conducting research amidst the increased workload during the pandemic. Most publications in Oman were collaborative projects. Based on the evaluated literature, further research focusing on vaccines and therapeutics is warranted.

Keywords: Bibliometrics; COVID-19, Oman; Medical Research; Publications; SARS-CoV-2.

Objectives: To determine the effects of whole-body vibration (WBV) training on depression, anxiety, stress, and quality of life (QoL) in college students. Methods: The participants comprised college students who led physically inactive lifestyles as revealed by their Medical Outcomes Study Form 36 (SF-36) scores, and with elevated scores of Depression Anxiety Stress Scale (DASS) test. They were randomly allocated to two groups of 15 each: (a) the WBV group (male = 3, female = 12) and (b) the exercise group (male = 6, female = 9). The participants in the WBV group performed prescribed exercises while they stood on a vibrating platform whereas those in the exercise group performed the same exercises but without the vibrating platform. After four weeks of twice-a-week training, DASS and SF-36 were measured. The pre- and post-scores were compared between the groups. Results: Depression (p < 0.001), anxiety (p < 0.001), and stress (p < 0.001) were found to reduce significantly for the WBV group compared to the exercise group. There was also significant within-group improvement in all the components of SF-36 (p < 0.040). Conclusions: Exercising on the WBV platform may reduce depression, anxiety, and stress in college students and improve their overall QoL.

Keywords: Vibration; Depression; Mental Health; Quality of Life; Exercise, Physical; Young Adult; India.

Objectives: To assess the diagnostic accuracy and efficacy of taking history, conducting physical examination, and assessing the radiological characteristics of children suspected of having aspirated foreign bodies (FBs), vis-à-vis tracheobronchoscopy, the gold standard diagnostic tool. An additional objective was to analyze the types and locations of aspirated FBs. Methods: This single-center retrospective cohort study used the archived medical data of consecutive pediatric patients who had presented with suspected tracheobronchial FB aspiration (TFBA) from January 2011 to May 2021. Data regarding clinical presentation, radiological impressions, and intraoperative findings were retrieved from electronic medical records. Results: The subjects comprised 44 children (22 male) with a mean age of 25.4 months (median = 17.5 months). The majority (27; 61.4%) had TFBA. Among the clinical symptoms, choking and coughing had a sensitivity of 93.9% and specificity of 30.0% and 50.0%, respectively in confirming the presence of a FB. Positive physical examination results had a sensitivity of 95.8% and specificity of 63.2%. Radiological results had a sensitivity of 60.0% and specificity of 78.9%. Organic substances constituted 47.7% of the aspirated FBs. Conclusions: Proper clinical assessment with history, physical examination, and imaging can highly predict the presence of TFBAs in children, and help the clinician decide whether bronchoscopy is necessary.

Keywords: Foreign Bodies; Respiratory Aspiration; Bronchoscopy; Pediatric Emergency Medicine; Diagnosis; Oman.

Glycated hemoglobin (HbA1c) is used to monitor the long-term management of diabetes and reflects the average blood glucose level over the past three months. Hb J is an alpha-globin gene variant that occurs less commonly but can interfere with the HbA1c result. This case report presents two cases of abnormally high HbA1c in patients with Hb J using the high-performance liquid chromatography (HPLC) method and repeated value using the capillary electrophoresis (CE) method. The first case was a 26 years old female Malay patient, presenting at 25 weeks gestation with diabetes mellitus (DM). Her HbA1c results from HPLC showed persistently high level (> 18.5%, > 179 mmol/mol) despite optimum diabetic control (fasting blood sugar (FBS) range 4.0–6.1 mmol/L). The second case was a 62-year-old female Malay with type 2 DM. Her HbA1c results from HPLC was also persistently high (> 18.5%, > 1;79 mmol/mol) despite good diabetic control (FBS average 5.0–7.0 mmol/L). Both patients’ hemoglobin analysis reports were suggestive of Hb J. Repeated HbA1c using CE were 6.0% (42 mmol/mol) and 8.1% (65 mmol/mol), respectively, and supported the presence of the Hb J variant peak. HbA1c measurement in patients with a variant should be interpreted with caution to avoid misdiagnosis and mismanagement in these kinds of patients.

Keywords: Glycated Hemoglobin A; Diabetes Mellitus; Hemoglobin J; Chromatography, High Pressure Liquid; Electrophoresis, Capillary.

Surgically induced necrotizing scleritis (SINS) is an immune-mediated condition that rarely occurs after ocular surgeries with a latency period of days to years. We present a case of a 49-year-old man who developed bilateral SINS two weeks after uneventful bilateral pterygium excision with conjunctival autografts. He was managed with a course of oral prednisolone, topical antibiotic ointment, topical non-steroidal anti-inflammatory drugs and lubricants, and close follow-up and rheumatological consultation.

Keywords: Scleritis; Pterygium; Autografts.

Unilateral proptosis is a rare initial presenting sign of acute myeloid leukemia (AML). We report a case of unilateral proptosis in a six-year-old girl as the initial manifestation of AML. The cancer link was initially missed and the case was investigated as one of hyperthyroidism. Peripheral blood smear and bone marrow aspirate evaluation showed signs diagnostic of AML. Computed tomography scan of orbits showed infiltrative process in the right orbit, right maxillary, and right ethmoidal sinuses. Unilateral proptosis as an extramedullary first presenting feature of AML is very rare; however, it should always be considered in the differential diagnosis of proptosis in pediatric age group.

Keywords: Acute Myeloid Leukemia; Proptosis; Orbit; Pediatric; Oman.

Objectives: Platelet refractoriness complicates the platelet transfusion, which is essential for managing thrombocytopenia in patients with hematological disorders. It is associated with adverse clinical outcomes and increased health care costs. We conducted a prospective study to determine the effectiveness of cross-matched compatible platelets in a group of patients refractory to platelets from random donors and to evaluate human leukocyte antigen (HLA)-mediated refractoriness. Methods: This prospective study was conducted on 40 patients with different hematological disorders requiring platelet transfusions who were refractory to random platelets and presented to the hematology unit of Alexandria's main university hospitals between May 2020 and March 2021. They received 60 ABO-compatible platelet transfusions, either leuco-reduced or random donor platelets, stored for no more than 72 hours. A solid-phase red cell adherence technique (SPRCA) was used for platelet crossmatching. The corrected count increment (CCI) was used to monitor the effectiveness of each platelet transfusion with a cut-off value of 5 × 103/µL at 1 hour and 2.5 × 103/µL at 24 hours. Anti-HLA antibodies were assessed using the enzyme-linked immunosorbent assay technique. Results: Out of 60 cross matches, 47 (78.3%) were compatible, and 13 (21.7%) were incompatible. Among 47 compatible results, 30 (63.8%) showed adequate CCI and 17 (36.2%) showed inadequate CCI at 1-hour post-transfusion. Among the incompatible results, 3 (23.1%) had adequate CCI and 10 (76.9%) had inadequate CCI. Significant improvements were found in the mean CCI when comparing cross-matched compatible platelets and incompatible platelets at 1hour or 24 hours (p = 0.009 and p < 0.001, respectively). From the 40 studied patients, HLA alloimmunization was present in 18 patients (45.0%) and absent in the remaining 22 patients (55.0%). In the absence of HLA alloimmunization, patients showed significantly better responses at 1 hour and 24 hours (p = 0.001 and p = 0.015, respectively). There was better sensitivity of platelet crossmatching with random donor platelet concentrates than single donor platelet concentrates. Conclusions: Platelet crossmatching using SPRCA and HLA screening are effective and rapid tools for better management of patients' refractory to platelet transfusions.

Anatomical variations of the cystic artery are frequently documented, but variations of the artery to the cystic duct are extremely uncommon. We report a rare duplication of the artery to the cystic duct, revealed during laparoscopic cholecystectomy on an 18-year-old Caucasian female treated for gallstone disease. Both arterial branches were meticulously and carefully retracted and cauterized to avoid bleeding and subsequent postoperative complications. To our knowledge, this is the first reported case of an artery to the cystic duct duplication. The presence of congenital variations of the artery to the cystic duct encumbers surgical maneuvers and increases the potentiality of intraoperative injury
and hemorrhage.

Keywords: Cystic Duct; Anatomic Variation; Cholecystectomy, Laparoscopic.