Predictors of psychological distress among the public in Oman amid coronavirus disease 2019 pandemic: a cross-sectional analytical study.

Coronavirus disease 2019 (COVID-19) is a global, virulent pandemic disease that emerged in December 2019, with both short- and long-term psychological repercussions being inevitable. This study aimed to investigate the prevalence and predictors of psychological distress, defined by the presence of either depression or anxiety, among the public in Oman during the COVID-19 pandemic. This was a web-based, cross-sectional study conducted using governmental and private institutional e-mail systems and social media platforms. Anxiety and depression were assessed using both the Generalized Anxiety Disorder-7 Scale and the Patient Health Questionnaire-9. Logistic regression analysis was used to assess the independent predictors. There were a total of 1538 participants in this study (75% female). The prevalence of psychological distress was 30%. Being female, having financial instability, being treated for mental illness and self-medication for coping with stress were independent predictors of psychological distress among the study sample (Odds ratio [OR] = 1.69, confidence interval [CI] = 1.24-2.29; OR = 2.05, CI = 1.54-2.74; OR = 5.35, CI = 3.50-8.18; OR = 7.23, CI = 3.06-17.09, respectively). The results from this study will help public health officials in Oman to plan for and mitigate psychological repercussions of the current and future pandemics.

Impact of cell saver during cardiac surgery on blood transfusion requirements: a systematic review and meta-analysis.

OBJECTIVE: We performed a systematic review and meta-analysis of randomized clinical trials on adult patients undergoing cardiac surgery and compared the rates of red blood cell (RBC), platelet and fresh frozen plasma (FFP) transfusion between the cell saver (CS) and the standard of care groups. METHODS: MEDLINE ®, The Cochrane Central Register of Controlled Trials (CENTRAL), American Society of Hematology (ASH) and bibliographies of relevant studies were searched. We used random-effect model. RESULTS: Our search strategy returned 624 citations, of which 15 studies were selected. The use of CS did not decrease the rate of RBC transfusion (odds ratio [OR]: 0·69; 95% CI: 0·48-1·00), albeit with a substantial heterogeneity (I2  = 60%). The year of publication explained most of the heterogeneity (P for subgroup effect <0·001). Although the rate of platelet transfusion was lower in the CS group, the difference was not statistically significant (OR: 0·83; 95% CI: 0·57-1·2; I2  = 0%). The rate of FFP transfusion was numerically higher in the CS group; however, this difference did not reach statistical significance (OR: 1·26; 95% CI: 0·82-1·94; I2  = 15%). Only two studies scored five on the Jadad score. There was no indication of a publication bias using the funnel plot and Egger test (P = 0·34, 0·87, and 0·62 for RBC, platelet and FFP, respectively). CONCLUSION: The use of CS during cardiac surgery does not have an impact on the rates of RBC, platelet and FFP transfusion; however, this should be interpreted in the light of the study limitations.

Discriminatory power of the intraoperative cell salvage use in the prediction of platelet and plasma transfusion in patients undergoing cardiac surgery.

INTRODUCTION: We aim to assess the discrimination of transfused salvaged blood in predicting perioperative platelet and plasma transfusion. METHODS: Retrospective review was performed on all patients undergoing cardiac surgery with cell saver (CS) support. The area under the receiver operating characteristics curve was calculated. RESULTS: The discrimination achieved by transfused CS volumes in predicting perioperative platelet and plasma transfusion was poor (AUC 0.642 and 0.613 respectively). None of the covariates included (preoperative platelets, cardiopulmonary bypass use and time, aortic cross clamp time and use of aspirin or clopidogrel within 7 days of surgery) were statistically significant predictors. CONCLUSION: Volumes of transfused CS blood have poor discrimination in predicting platelet and plasma transfusion.

A roadmap towards implementing health technology assessment in Oman.

PURPOSE: Health technologies are advancing rapidly and becoming more expensive, posing a challenge for financing healthcare systems. Health technology assessment (HTA) improves the efficiency of resource allocation by facilitating evidence-informed decisions on the value of health technologies. Our study aims to create a customized HTA roadmap for Oman based on a gap analysis between the current and future status of HTA implementation. DESIGN/METHODOLOGY/APPROACH: We surveyed participants of an advanced HTA training program to assess the current state of HTA implementation in Oman and explore long-term goals. A list of draft recommendations was developed in areas with room for improvement. The list was then validated for its feasibility in a round table discussion with senior health policy experts to conclude on specific actions for HTA implementation. FINDINGS: Survey results aligned well with expert discussions. The round table discussion concluded with a phasic action plan for HTA implementation. In the short term (1-2 years), efforts will focus on building capacity through training programs. For medium-term actions (3-5 years), plans include expanding the HTA unit and introducing multiple cost-effectiveness thresholds while from 6-10 years, publishing of HTA recommendations, critical appraisal reports, and timelines is recommended. ORIGINALITY/VALUE: Although the HTA system in Oman is still in its early stages, strong initiatives are being taken for its advancement. This structured approach ensures a comprehensive integration of HTA into the healthcare system, enhancing decision-making and promoting a sustainable, evidence-based system addressing the population's needs.

Healthcare costs and outcomes associated with surgical site infections after coronary artery bypass grafting surgeries in Oman.

BACKGROUND: Surgical site infection (SSI) after coronary artery bypass graft (CABG) surgeries is considered a key indicator of the quality of healthcare services. OBJECTIVE: This study aimed to estimate the healthcare outcomes associated with SSIs after CABG surgeries in Oman in terms of mortality rate, case-fatality rate, LOS, readmission rate and healthcare costs. METHODS: The nested case-control study design was used based on retrospective data, which was conducted from 2016 to 2017. The case group encompassed all CABG patients with confirmed SSIs within 30 days of the surgery (n = 104) while controls were CABG patients without SSIs (n = 404). RESULTS: Forty-four (42.3%) of the SSI patients were readmitted to the hospital compared to eight (2%) of the control group (p < .001). Patients in the case group had a longer LOS (M = 24.4, SD = 44.6 days) compared to those in the control group (M = 11, SD = 21 days, p = .003). The mean healthcare costs of cases (M = Omani Rial [OMR] 3823, SD = OMR 2516) were significantly greater than controls (M = OMR 3154, SD = OMR 1415, p = .010). CONCLUSION: Results from this study can be baseline data for formulating new hypotheses and testing the causal relationship between SSIs after CABG surgeries and the readmission rate, LOS and health care costs.Key messagesSurgical Site Infections (SSIs) are still a major complication after cardiac surgeries in Oman.SSIs after cardiac surgeries are associated with substantially increased healthcare costs and length of stay.SSIs after cardiac surgeries are associated with negative outcomes such as mortality and case-fatality rates.

Incidence and risk factors of surgical site infections after coronary artery bypass grafting surgery in Oman.

Background: There is limited information about the incidence and risk factors of surgical site infections (SSIs) after coronary artery bypass (CABG) surgeries in the Omani population. Aim: To estimate the prevalence and describe possible risk factors of SSIs after CABG surgeries in Oman. Method: A retrospective nested case-control design was used to screen 596 patients who underwent CABG surgeries over 2 years (2016-2017) in two tertiary hospitals in Oman. The CDC definition for SSIs was used to identify the infected cases. Results: Prevalence rate of SSIs was 17.4% and 17.5% in 2016 and 2017, respectively. The most isolated microorganism was Gram-positive bacteria (45.2%). Risk factors of SSIs include female gender (OR = 3.2, p < 0.001), diabetes (OR = 5.83, p < 0.001), overweight or obese (OR = 2.14, p < 0.05) and shaving technique [using razor shaving] (OR = 8.4, p < 0.001). Readmission rate for the case group was 44.2%. Conclusion: The infection rate of SSIs after CABG surgeries in developing countries, such as Oman, is considerably high. There is an urgent need to establish SSIs preventive program at the national level. Frequent and systematic assessment of infection control practices before and after CABG surgeries is fundamental and priority strategy to prevent SSIs.

A promising future for tele-mental health in Oman: A qualitative exploration of clients and therapists' experiences.

Objectives: Tele-mental health services can play an important role in overcoming barriers in mental health services in the Eastern Mediterranean Region. However, despite its potential, tele-mental health has not been widely adopted in Oman. This study is an exploratory investigation into the experiences of therapists and their clients in utilizing video-based tele-mental health care during the COVID-19 pandemic. Methods: A total of 19 semistructured qualitative interviews were individually conducted, it included 13 adult clients with mental health conditions who received video-based tele-mental health care and six clinical psychologists who provided video-based tele-mental health care during the COVID-19 pandemic. Results: The clients reported favorable experiences using tele-mental health, with the primary benefits being convenience, easy accessibility to subspecialized care, reduced absenteeism from work with commuting costs, and alleviated mental health stigma. The therapists also expressed experiencing benefits from tele-mental health, such as reduced risk of intrahospital infection, reduced healthcare costs, and the achievement of work-life balance. Primary concerns were related to the lack of public tele-mental health services, lack of specified tele-mental health guidelines, shortage of trained therapists, limited access to high-speed Internet, electronic devices, privacy, and concerns toward the security of telehealth systems in general. Conclusion: Clients and therapists report that tele-mental health offers new opportunities to improve the quality of mental healthcare services in Oman, and that the challenges could be resolved by establishing governmental tele-mental health services along with developing tele-mental health guidelines and implementing local postgraduate clinical psychology programs in universities in Oman.

The Achievement of Non-high-density Lipoprotein Cholesterol Target in Patients with Very High Atherosclerotic Cardiovascular Disease Risk Stratified by Triglyceride Levels Despite Statin-controlled Low-density Lipoprotein Cholesterol.

Objectives: We sought to estimate the percentage achievements of non-high-density lipoprotein cholesterol (non-HDL-C) target in patients with very high atheroscleroticcardiovascular diseases (ASCVD) risk stratified by triglyceride (TG) levels despite statin-controlled low-density lipoprotein cholesterol (LDL-C) in the Centralized Pan-Middle East Survey on the under treatment of hypercholesterolemia. Methods: The non-HDL-C target achievement in patients with diabetes mellites (DM) and patients with established ASCVD was defined according to European Society of Cardiology and European Atherosclerosis Society 2019 guidelines for managing dyslipidemia. Patients were stratified to controlled LDL-C defined as < 70 mg/dL (< 1.8 mmol/L) with normal TG < 150 mg/dL (< 1.7 mmol/L) and high TG between 150-400 mg/dL (1.7-4.5 mmol/L). Results: The mean age of our cohort was 58.0±11.0 years, 6.8% (n = 717) were male, 9.7% (104) were smokers, and 48.4% (n = 518) had body mass index of ≥ 30 kg/m2. Those with high TG levels male (76.5% vs. 63.8%; p < 0.001), smokers (16.1% vs. 7.7%; p < 0.001), have metabolic syndrome (77.6% vs. 17.1%; p < 0.001), and low HDL-C levels (79.2% vs. 49.4%; p < 0.001). The majority (93.9%, n = 1008) were on statins (atorvastatin and rosuvastatin) with only 2.2% (n = 24) on the combined statins plus fenofibrate/gemfibrozil. Only 27.4% (n = 294) of patients had non-HDL-C goal attainment. Goal attainment rates in patients with diabetes (3.1% vs. 34,4%; p < 0.001), coronary artery disease (CAD) (2.4% vs. 37.9%; p < 0.001), diabetes plus CAD (0% vs. 40.0%; p < 0.001), and CVD (0% vs. 30.0%; p = 0.048) were significantly lower in those with higher TG levels. Conclusions: A large proportion of statin-controlled LDL-C diabetic patients and patients with established ASCVD with high TGs did not achieve the non-HDL-C target. Our study did not demonstrate an association between ASCVD and high TG levels; and therefore, a follow-up study is highly required to assess long-term ASCVD outcomes in this cohort.

Preoperative Anemia is Associated with Increased Intraoperative Mortality in Patients Undergoing Cardiac Surgery.

OBJECTIVES: We sought to investigate the incidence of preoperative anemia in cardiac surgery and its association with outcomes. METHODS: A retrospective review of clinical, laboratory, and transfusion data for all patients who underwent cardiac surgery at Sultan Qaboos University Hospital between 2008 and 2014 was performed. Patients were divided into two groups, anemic and non-anemic, with anemia defined as hemoglobin levels < 13 g/dL (males) and < 12 g/dL (females). Clinical variables were compared using chi-square and independent t-test. Factors influencing preoperative mortality were analyzed using multivariate binary logistics regression. RESULTS: A total of 599 patients (69.9% males and 30.1% females) were included in the study; 69.3% underwent coronary artery bypass surgery. Preoperative anemia was found in 76.1% of females and 26.7% of male patients. Rates of intraoperative red blood cell transfusions were higher among anemic patients (75.9% vs. 52.3%, p < 0.001). Anemic patients had a worse risk profile with higher incidence of diabetes mellitus (53.8% vs. 38.9%, p < 0.001), congestive heart failure (51.4% vs. 28.3%, p < 0.001), arrhythmia (16.5% vs. 8.6%, p = 0.004), and cerebrovascular disease (10.0% vs. 4.9%, p = 0.015). In addition, they had a higher risk of overall mortality (6.4% vs. 2.6%, p = 0.023). Preoperative anemia remained a risk factor for intraoperative mortality after logistic regression (odds ratio = 4.08, 95% confidence interval: 1.43-11.66; p = 0.009). CONCLUSIONS: Preoperative anemia in cardiac surgery is independently associated with increased intraoperative mortality and early readmission rates post-surgery.

Efficacy of a Six-Week-Long Therapist-Guided Online Therapy Versus Self-help Internet-Based Therapy for COVID-19-Induced Anxiety and Depression: Open-label, Pragmatic, Randomized Controlled Trial.

BACKGROUND: The COVID-19 pandemic has led to a notable increase in psychological distress, globally. Oman is no exception to this, with several studies indicating high levels of anxiety and depression among the Omani public. There is a need for adaptive and effective interventions that aim to improve the elevated levels of psychological distress due to the COVID-19 pandemic. OBJECTIVE: This study aimed to comparatively assess the efficacy of therapist-guided online therapy with that of self-help, internet-based therapy focusing on COVID-19-induced symptoms of anxiety and depression among individuals living in Oman during the COVID-19 pandemic. METHODS: This was a 6-week-long pragmatic randomized controlled trial involving 60 participants who were recruited from a study sample surveyed for symptoms of anxiety or depression among the Omani public amid the COVID-19 pandemic. Participants in the intervention group were allocated to receive 1 online session per week for 6 weeks from certified psychotherapists in Oman; these sessions were conducted in Arabic or English. The psychotherapists utilized cognitive behavioral therapy and acceptance and commitment therapy interventions. Participants in the control group received an automatic weekly newsletter via email containing self-help information and tips to cope with distress associated with COVID-19. The information mainly consisted of behavioral tips revolving around the principles of cognitive behavioral therapy and acceptance and commitment therapy. The primary outcome was measured by comparing the change in the mean scores of Patient Health Questionnaire-9 (PHQ-9) and General Anxiety Disorder-7 (GAD-7) scale from the baseline to the end of the study (ie, after 6 sessions) between the two groups. The secondary outcome was to compare the proportions of participants with depression and anxiety between the two groups. RESULTS: Data from 46 participants were analyzed (intervention group n=22, control group n=24). There was no statistical difference in the baseline characteristics between both groups. Analysis of covariance indicated a significant reduction in the GAD-7 scores (F1,43=7.307; P=.01) between the two groups after adjusting for baseline scores. GAD-7 scores of participants in the intervention group were considerably more reduced than those of participants in the control group (ß=-3.27; P=.01). Moreover, a greater reduction in mean PHQ-9 scores was observed among participants in the intervention group (F1,43=8.298; P=.006) than those in the control group (ß=-4.311; P=.006). Although the levels of anxiety and depression reduced in both study groups, the reduction was higher in the intervention group (P=.049) than in the control group (P=.02). CONCLUSIONS: This study provides preliminary evidence to support the efficacy of online therapy for improving the symptoms of anxiety and depression during the COVID-19 crisis in Oman. Therapist-guided online therapy was found to be superior to self-help, internet-based therapy; however, both therapies could be considered as viable options. TRIAL REGISTRATION: ClinicalTrials.gov NCT04378257; https://clinicaltrials.gov/ct2/show/NCT04378257.

Clinical and Genetic Characteristics of Familial Hypercholesterolemia at Sultan Qaboos University Hospital in Oman.

OBJECTIVES: We sought to describe the clinical and genetic characteristics of patients with familial hypercholesterolemia (FH) that presented to the lipid clinic at Sultan Qaboos University Hospital, Muscat, Oman. METHODS: Patients who presented with high low-density lipoprotein cholesterol (LDL-C) levels (> 189.0 mg/dL or 4.9 mmol/L) were recruited to the study. FH was diagnosed according to the Dutch Lipid Clinic Network criteria. Analyses were performed using univariate statistics. RESULTS: The study enrolled 450 patients with a mean age of 48.0±12.0 years, 56.0% (n = 252) were males and 11.3% (n = 51) were smokers. At admission, the proportion of 'probable/definite', 'possible', and 'unlikely' FH were 27.6% (n = 124), 70.0% (n = 315), and 2.4% (n = 11), respectively. Overall, 26.0% (n = 117) of patients had hypertension, 22.4% (n = 101) had a history of coronary artery disease, and 17.3% (n = 78) had diabetes mellitus. Those with 'probable/definite' FH were more likely to be prescribed high-intensity statin therapy (75.8% vs. 54.5%; p < 0.001) and statin ezetimibe combination (50.8% vs. 27.3%; p < 0.001) when compared to the 'unlikely' FH cohort. Additionally, those with very high atherosclerotic vascular disease (ASCVD) risk were also associated with high-intensity statin therapy (54.7% vs. 42.7%; p = 0.006) and statin ezetimibe combination (26.4% vs. 17.2%; p = 0.023). Patients with 'probable/definite' FH were less likely to achieve their LDL-C goal attainment compared to those with 'unlikely' FH (13.0% vs. 57.1%; p < 0.001). Furthermore, those with very high ASCVD risk were less likely to achieve their LDL-C goals compared to the high ASCVD risk cohort (9.6% vs. 32.0%; p < 0.001). CONCLUSIONS: FH patients are underdiagnosed, undertreated, and less likely to attain their LDL-C goals in Oman.

Impact of Blood Transfusion on Troponin I Levels and Outcomes after Cardiac Surgery: A Cohort Study.

OBJECTIVES: Increased cardiac troponin I (TI) has been suggested to be a sensitive indicator of intraoperative myocardial injury. We investigated the association of transfusion on TI levels post-surgery and outcomes in patients undergoing elective cardiac surgeries. METHODS: We conducted a retrospective review of 542 patients. Patients were divided into two groups based on TI levels at 24 hours (TI24) (> 6.5 µg/L vs. ≤ 6.5 µg/L). The impact of transfusion on TI levels was estimated using logistic regression and adjusted for using a multivariable model that included aortic cross-clamp time and preoperative ejection fraction. The effect of TI on the clinical outcomes was examined. RESULTS: Red blood cell (RBC) transfusion was found to be associated with high TI levels (odds ratio (OR) = 2.33, p = 0.007, 95% confidence interval (CI): 1.30-4.30). A trend was observed when aortic cross-clamp time and preoperative ejection fraction were adjusted for (OR = 2.06, p = 0.080, 95% CI: 0.90-4.70). An association was found between aortic cross-clamp time and high TI levels in the multivariable model (OR = 1.01, p = 0.028, 95% CI: 1.00-1.02). Elevated TI levels was associated with higher mortality (OR = 4.15, p = 0.017, 95% CI: 1.29-13.08), renal failure (OR = 2.99, p = 0.004, 95% CI: 1.41-6.32), and increased length of stay in-hospital (OR = 4.50, p = 0.020, 95% CI: 0.69-8.30). CONCLUSIONS: RBC transfusion is associated with increased TI24 post-cardiac surgery and worse outcomes, albeit a confounding effect cannot be excluded. Larger studies are required to confirm these findings.

Cardio-autonomic functions and sleep indices before and after coronary artery bypass surgery.

BACKGROUND: Earlier studies showed a short-term impairment of cardio-autonomic functions following coronary artery bypass grafting (CABG). There is a lack of consistency in the time of recovery from this impairment. Studies have attributed the post-CABG atrial fibrillation to preexisting obstructive sleep apnea (OSA) without an objective sleep assessment. The aim of this study was to evaluate the effect of CABG on cardio-autonomic and hemodynamic functions and on OSA indices in patients with ischemic heart disease (IHD). METHODS: Cardio-autonomic function using heart rate variability indices, hemodynamic parameters, and sleep studies were performed in 26 patients with stable IHD before, on day-6, and day-30 post-CABG surgery. RESULTS: The high-frequency powers of normalized R-R intervals significantly (P = 0.002) increased from the preoperative value of 46.09 to 66.52 on day-6 and remained unchanged on day-30 postsurgery. In contrary, the low-frequency powers of normalized R-R interval decreased from 53.91 to 33.48 during the same period (P = 0.002) and remained unchanged on day 30 postsurgery. Baroreceptor sensitivity, obstructive and central apnea indices, desaturation index, and lowest O2 saturation were not significantly different between preoperative, day-6, and day-30 postsurgery. CONCLUSION: Our study revealed that recovery of autonomic functions following CABG occurs as early as 30 days of postsurgery. CABG does not seem to have short-term effects on sleep study indices. However, long-term effects need further evaluation.

Transfusion Consent in Oman: Physicians' Perception at a Tertiary Care University Hospital.

OBJECTIVES: Transfusion is a common intervention that mandates the discussion of benefits, risks, and alternatives to planned transfusions. In Oman, transfusion consent was first introduced at the Sultan Qaboos University Hospital in March 2014. We sought to evaluate our physicians' opinions, attitudes, and perception of the transfusion consent process. METHODS: Attending physicians of different specialties were invited to complete an anonymous survey on transfusion consent. RESULTS: A total of 114 physicians responded to the survey. Transfusion benefits and risks were explained regularly by 91% and 87% of the surveyed physicians, respectively. On the other hand, alternatives were declared by only 38%. Discomfort with the consent process was admitted by 10% of the physicians. There was no statistically significant association between discomfort in obtaining the consent and the physician seniority (p = 0.801), nor their specialties (p = 0.623). The importance of the consent process was acknowledged by 80% of surveyed physicians, who supported its implementation in other hospitals. CONCLUSION: This survey reflects positive attitudes of the surveyed physicians on the importance of transfusion consent. However, actions are required to achieve physicians' full ease with the process and to ensure that transfusion alternatives are discussed. We advocate implementation of transfusion consent in other hospitals in Oman.

First Implementation of Transfusion Consent Policy in Oman: Audit of compliance from a tertiary care university hospital.

OBJECTIVES: Transfusions are a common medical intervention. Discussion of the benefits, risks and alternatives with the patient is mandated by many legislations prior to planned transfusions. At the Sultan Qaboos University Hospital (SQUH), Muscat, Oman, a written transfusion consent policy was introduced in March 2014. This was the first time such a policy was implemented in Oman. This study therefore aimed to assess adherence to this policy among different specialties within SQUH. METHODS: The medical records of patients who underwent elective transfusions between June and August 2014 were reviewed to assess the presence of transfusion consent forms. If present, the consent forms were examined for completeness of patient, physician and witness information. RESULTS: In total, the records of 446 transfused patients (299 adult and 147 paediatric patients) were assessed. Haematology patients accounted for 50% of adult patients and 71% of paediatric patients. Consent was obtained for 75% of adult and 91% of paediatric patients. The highest adherence rate was observed among adult and paediatric haematology specialists (95% and 97%, respectively). Consent forms were correctly filled out with all details provided for 51% and 52% of adult and paediatric patients, respectively. Among inadequately completed forms, the most common error was a lack of witness details (20-25%). CONCLUSION: In most cases, the pre-transfusion consent policy was successfully adhered to at SQUH. However, further work is required to ensure full compliance with the consent procedure within different specialties. Implementation of transfusion consent in other hospitals in the country is recommended.

Polytrauma to right diaphragm, descending thoracic aorta, and innominate artery.

Traumatic diaphragmatic rupture with concomitant great vessel injuries is a catastrophic and life-threatening injury group that requires immediate identification and management. It can be both diagnostically and therapeutically very challenging. We report a case of combined traumatic diaphragmatic, aortic and innominate artery injuries, which was managed successfully. To have a fruitful outcome, management of this injury complex should preferably be staged depending on the hemodynamic stability of the patient. In a patient with traumatic diaphragmatic injuries, one should also have a high index of suspicion of associated great vessel injuries.

Sharma's clamp for sequential coronary artery grafting.

Sequential coronary artery grafting is a common procedure. Holding the graft in the correct alignment and orientation in a limited pericardial space and taking a suture at the correct place on the graft is difficult. Graft slippage from the assistant can be distracting to the surgeon, unnecessarily increasing the anastomosis time and also affecting graft patency due to improperly placed sutures. We describe a simple device (Sharma's clamp) for graft holding and stabilization for sequential bypass grafting in coronary artery bypass surgery.

White coat hypertension and masked hypertension among omani patients attending a tertiary hospital for ambulatory blood pressure monitoring.

OBJECTIVES: Our study aimed to estimate the rate of white coat hypertension (WCH) and effect, and masked hypertension in patients attending a tertiary care hospital for 24 hour ambulatory blood pressure monitoring (24-h ABPM). METHODS: A total of 231 adult patients were referred to the Department of Clinical Physiology at Sultan Qaboos University Hospital, Muscat, for ABPM, between January 2010 and June 2012. The following data were gathered and analyzed: demographic data, clinic blood pressure (BP) measurements, and 24-h BP profile from ABPM. Thirty-two patients were excluded and the final analysis included 199 patients. RESULTS: There were 105 (52.8%) women and 94 (47.2%) men studied. The mean age of patients was 46±15 years and most patients were overweight with a mean BMI of 29.6±5kg/m(2). Around half of patients (53.8%) were on one or more antihypertensive medications. WCH was found in 10.6% and white coat effect was found in 16% of patients. The majority of patients (57%) with WCH were aged 40 years or above. Masked hypertension was present in 6% of patients and masked uncontrolled hypertension in 8.5% of patients. CONCLUSIONS: Our study showed that WCH and effect, and masked hypertension are common in hypertensive patients. Identifying these patients will have an impact on their management. However, the results of the study should be interpreted within the context of its limitations. Prospective randomized community and hospital-based studies should be conducted to estimate the true prevalence in the general population as well as in hypertensive patients.

Successful Direct Adsorption of Lipoproteins (DALI) Apheresis During Pregnancy in an Omani Woman with Homozygous Familial Hypercholesterolemia.

We report our experience with Direct Adsorption of Lipoproteins (DALI) apheresis in an Omani pregnant woman affected by homozygous familial hypercholesterolemia. To the best of our knowledge this is the first successful pregnancy treated with DALI apheresis. The patient had a history of coronary artery disease, supra-aortic valvular stenosis and severe carotid artery disease with right carotid artery stenting. She was on a regular biweekly DALI apheresis since 2008. In May 2013, she became pregnant and rosuvastatin and ezetimibe were stopped while she continued on DALI apheresis biweekly. This treatment during pregnancy was successful with no major complications. The average low-density lipoprotein cholesterol reduction during therapy was 50%. She spontaneously delivered a healthy male infant (2,400 g) at 37 weeks. We showed that DALI apheresis therapy was safe during pregnancy with a good outcome for both mother and neonate.

Therapeutic angiogenesis using autologous bone marrow stromal cells: improved blood flow in a chronic limb ischemia model.

BACKGROUND: We evaluated the effect of autologous marrow stromal cells (MSCs) on neovascularization and blood flow in an animal model of chronic limb ischemia. METHODS: Chronic hind limb ischemia was created by ligating the left common iliac artery of male Lewis rats. Three weeks after ligation, 5.0 million LacZ+MSCs (n = 10) or culture medium (n = 10) were injected into the anteromedial muscle compartment of the left thigh. At 4 and 6 weeks after injection, half the animals (n = 5) from each group underwent femoral artery ultrasonic blood flow measurements of the ischemic and nonischemic limbs to obtain a flow ratio. The animals also underwent angiography and measurements of blood vessel density and arteriolar density. Qualitative histologic assessment of the limb muscles was performed. RESULTS: LacZ+MSCs were found to differentiate into endothelium (F VIII+), vascular smooth muscle (positive a-smooth muscle actin), skeletal muscle (positive desmin), and adipocytes. Ischemic hind limbs where MSCs were implanted had greater vascular density and arteriolar density than control limbs (p < 0.001). Femoral artery flow index (left femoral artery flow/right femoral artery flow) was 0.89 +/- 0.12 and 0.90 +/- 0.06 for rats injected with MSCs measured at 4- and 6-weeks, respectively, compared with 0.50 +/- 0.15 and 0.50 +/- 0.10 for the control rats (p < 0.001). Angiography demonstrated reconstitution of the left femoral artery in rats that received MSC implantation through pelvic and abdominal wall collateral formation. CONCLUSIONS: Local MSC implantation induces a neovascular response resulting in a significant increase in blood flow to the ischemic limb. Marrow stromal cells are also capable of spontaneously regenerating the various components of muscular tissues.