Comparative performance of liquid chromatography and spectrophotometry in determining metformin hydrochloride within pharmaceutical formulations.

The present study compared the performance of Ultra-high performance liquid chromatography (UHPLC) and UV-Vis spectrophotometry for the quantification of metformin hydrochloride in five commercially available metformin hydrochloride products with different strengths. The metformin hydrochloride was measured in the UHPLC with a mobile phase consisting of a mixture of 0.05 M phosphate buffer solution and methanol (35:65, v/v) with a pH of 3.6. Metformin hydrochloride was determined spectrophotometrically at 234 nm using a mixture of methanol and water as a blank. The methods' linearity for metformin hydrochloride was within the concentration range of (2.5-40 µg/ml) in both techniques. The validation process encompassed assessments of specificity, selectivity, linearity, accuracy, precision, the lower limit of quantification (LLOQ), the lower limit of detection (LLOD), robustness, and system suitability. For the UHPLC validation method, the repeatability and reproducibility (expressed as relative standard deviation) were less than 1.578 and 2.718 %, respectively. The LLOQ for metformin hydrochloride was 0.625 µg/ml, and the LLOD was 0.156 µg/ml. For the UV-Vis spectrophotometric validation method, the repeatability and reproducibility (stated as relative standard deviation) were less than 3.773 and 1.988 %, respectively. The percentage recovery results for the five brands of metformin hydrochloride tablets were (98-101 %) and (92-104 %) for the UHPLC and UV-Vis spectrophotometric methods, respectively. In conclusion, the described methodologies were successfully employed for the quantitative analysis of metformin hydrochloride in different pharmaceutical tablet products.

Clinical features and outcomes of critically ill patients with coronavirus disease 2019 (COVID-19): A multicenter cohort study.

BACKGROUND: Coronavirus disease-19 (COVID-19) manifested by a broad spectrum of symptoms, ranging from asymptomatic manifestations to severe illness and death. The purpose of the study was to extensively describe the clinical features and outcomes in critically ill patients with COVID-19 in Saudi Arabia. METHOD: This was a multicenter, non-interventional cohort study for all critically ill patients aged 18 years or older, admitted to intensive care units (ICUs) between March 1 to August 31, 2020, with an objectively confirmed diagnosis of COVID-19. The diagnosis of COVID-19 was confirmed by Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) on nasopharyngeal and/or throat swabs. Multivariate logistic regression and generalized linear regression were used. We considered a P value of <0.05 statistically significant. RESULTS: A total of 560 patients met the inclusion criteria. An extensive list of clinical features was associated with higher 30-day ICU mortality rates, such as requiring mechanical ventilation (MV) or developing acute kidney injury within 24 hours of ICU admission, higher body temperature, white blood cells, blood glucose level, serum creatinine, fibrinogen, procalcitonin, creatine phosphokinase, aspartate aminotransferase, and total iron-binding capacity. During ICU stay, the most common complication was respiratory failure that required MV (71.4%), followed by acute kidney injury (AKI) and thrombosis with a proportion of 46.8% and 11.4%, respectively. CONCLUSION: Among patients with COVID-19 who were admitted to the ICU, several variables were associated with an increased risk of ICU mortality at 30 days. Respiratory failure that required MV, AKI, and thrombosis were the most common complications during ICU stay.

Pharmacy Students Perceptions of Their Distance Online Learning Experience During the COVID-19 Pandemic: A Cross-Sectional Survey Study.

INTRODUCTION: The COVID-19 pandemic imposed dramatic changes on educational practices worldwide. Many universities and schools have moved into the delivery of their courses and educational programs utilizing fully electronic online modes. This study aims to evaluate the pharmacy student distance online learning experience during the COVID-19 pandemic. METHODS: A cross-sectional survey was utilized where a 3-domain survey questionnaire focused on preparedness, attitude and barriers was distributed to students at the time of conclusion of the semester. Each domain consists of multiple questions that made up a score that reflects their preparedness, attitude as well as barriers relevant to distance online learning experience. The survey was voluntarily, and all data were collected and recorded via google forms with maintaining anonymity. RESULTS: The response rate was about 75% (n = 309). The results' analysis revealed no gender differences in any of these domains. However, there were some variable responses among different educational levels. The average preparedness score was 32.8 ± 7.2 (Max 45), the average attitude score was 66.8 ± 16.6 (Max 105), and the average barrier score was 43.6 ± 12.0 (Max 75). There was statistical significance difference in both preparedness score and attitude scores between different professional years (P-value <.05). However, there was no difference in barrier scores among all professional years. The results indicated that about 61.4% of the students agreed on that college of pharmacy was well-prepared and ready for the online education during the emerging COVID-19 pandemic with complete transition into online education. The results also indicated that 49.2% of the students showed positive attitude toward the provided online learning. The results indicated that about 34% of the students identify some barriers toward the provided online learning. Finally, there were strong association between the need for training on how to receive online courses and preparedness and barriers scores. DISCUSSION AND CONCLUSION: E-learning experience pose challenges and presents opportunities during emergency situations. The need for training for students and faculty was highly associated with the preparedness and barriers domains rather than the infrastructure or computer literacy, so the school can improve their experience by addressing these needs.

Implementation of an ACPE-Accredited PharmD Curriculum at a Saudi College of Pharmacy.

Objective. To establish an academic curricular collaboration between the newly established college of pharmacy at King Saud Bin Abdulaziz Saudi University for Health Sciences (KSAU-HS) and a US college of pharmacy accredited by the Accreditation Council for Pharmacy Education, and assess measures of success. Methods. Criteria for selecting a college for collaboration were established. A systematic approach was followed in negotiating legal, logistical, and financial issues with the selected collaborating institution. Course materials were transferred and implemented and minimal changes were made to the alignment and sequencing of lectures. The faculty at KSAU-HS developed and implemented research and seminar courses. Pharmacy practice experiences were designed and rubrics were developed. Results. All courses were implemented successfully. The PharmD students scored significantly higher in all academic levels in a benchmarked progress test than did students in other programs. Students' evaluation of 43 first-, second-, and third-year courses in 2017-2018 using a survey that assessed numerous aspects of each course showed significantly higher overall satisfaction than the institutional averages. Also, female students indicated significantly higher satisfaction with the PharmD program than did male students. Conclusion. The transfer and implementation of an accredited PharmD curriculum to the KSAU-HS College of Pharmacy went smoothly and the program was launched on time. Learning and teaching success was facilitated by the KSAU-HS faculty. Program outcomes were verified by students' high scores on a benchmarked examination and by their satisfaction with the courses.

The impact of immunosuppressant therapy on the recurrence of hepatitis C post-liver transplantation.

The use of immunosuppressants to reduce the likelihood of acute graft rejections is a cornerstone in the post-transplantation management of recipients. However, these agents were always associated with increased risk of deleterious effects such as infections vulnerability and comorbidities. The objective of this review is to discuss the impact of different immunosuppression strategies used in liver transplant recipients (LTRs) on the recurrence of hepatitis C virus (HCV) infections after transplantation. Traditionally, corticosteroids were a mainstay in immunosuppressive regimens in LTRs. Several trials have suggested early tapering of corticosteroids or steroid-free immunosuppression protocols to minimize metabolic complications and other accompanied adverse events. However, there is no consistent agreement on the apparent benefit of steroid-avoidance regimens on HCV recurrence. At present, calcineurin inhibitors alone or in combination with other immunosuppressants are the standard regimen for immunosuppression in LTRs. Although the use of mycophenolate mofetil and sirolimus were sometimes associated with a significantly lower risk of liver injury as a result of HCV recurrence, they were associated with an increased risk of acute graft rejection compared to calcineurin inhibitors. Consequently, reducing the incidence of HCV recurrence in LTRs could be at the expense of other potential complications. The appropriate selection of adequate immunosuppression could diminish the associated increased risk of HCV recurrence after liver transplantation. However, further clinical studies are still pivotal to establish the appropriate/optimal immunosuppressive therapies for HCV-positive LTRs.

Exploring Factors Associated with Depression and Anxiety among Hospitalized Patients with Type 2 Diabetes Mellitus.

OBJECTIVES: The aims of the current study were to determine the prevalence and severity of anxiety and depression, and to explore associated factors among hospitalized patients with type 2 diabetes mellitus. SUBJECTS AND METHODS: All patients with type 2 diabetes (160 patients) who were admitted to the Internal Medicine Wards of the King Abdulaziz Medical City, Riyadh, Saudi Arabia, from January to August 2015 were asked to participate, and 158 patients agreed to do so. A self-administered questionnaire consisting of 2 parts was used. The first part was on sociodemographic information, and the second part was a validated screening tool for assessing depression and anxiety. The severity of anxiety and depression was classified as normal, mild, moderate, and severe. Logistic regression was carried out to identify variables that were independently associated with anxiety and depression. RESULTS: Using the screening tool, 85 (53.8%) and 80 (50.6%) study patients were identified as patients who suffered from depression and anxiety, respectively. The severity of distress was moderate/severe in 36 (42.4%) patients with depression and 41 (51.3%) patients with anxiety. The factors independently associated with the risk for anxiety in hospitalized patients with diabetes were physical inactivity and staying 8 days or longer in the hospital. On the other hand, factors that were independently associated with the risk for depression were older age, low income, and nephropathy. CONCLUSION: The majority of hospitalized patients with diabetes developed moderate/severe anxiety or depression, or both, during hospitalization. Hence, screening for anxiety and depression in high-risk hospitalized diabetic patients is recommended during hospitalization.

Assessment of patient-controlled analgesia versus intermittent opioid therapy to manage sickle-cell disease vaso-occlusive crisis in adult patients.

BACKGROUND: Vaso-occlusive crisis (VOC) is one of the acute complications of sickle-cell disease (SCD). Treatment mainly relies on hydration and pain control by analgesics. The specific aim of this study was to assess potential health outcomes within the first 72 h of admission between intermittent and patient-controlled analgesia (PCA) by opioids among VOC patients. METHODS: A retrospective chart review study was conducted to determine SCD patients with VOC. Using the hospital electronic system, the following data were collected: patient's age, gender, blood pressure, heart rate, respiratory rate, oxygen saturation, and pain score on admission and daily for 3 days as well as the cumulative opioid analgesic dose for 72 h which is reported as morphine equivalent. RESULTS: One hundred and seventeen patients were screened over a period of 5 years. Of those, 99 (84.6%) met the study inclusion criteria, and 18 patients (15.4%) were excluded from the study. During the first 72 h of admission, a significant reduction in pain score was observed in patients on intermittent intravenous (IV) administration compared to those in the PCA group (P < 0.0004) where the mean pain scores were 3 and 5, respectively. The total amount of morphine administered over 72 h of admission was significantly higher in PCA group (777 ± 175 mg) as compared to the intermittent IV administration group (149 ± 74 mg) (P < 0.000003). Clinically significant hypotension or respiratory depression was not observed in both groups over the 72 h of admission. CONCLUSION: During the first 72 h of admission, intermittent IV administration of morphine was more effective than PCA infusion in pain control.

Awareness of venous thromboembolism and thromboprophylaxis among hospitalized patients: a cross-sectional study.

BACKGROUND: Patient awareness of venous thromboembolism (VTE) and thromboprophylaxis is essential for their safety. In this study, we evaluated patients' awareness of VTE and their perceptions of thromboprophylaxis. METHODS: We administered a cross-sectional survey to patients hospitalized at the King Abdulaziz Medical City, Riyadh, Saudi Arabia. RESULTS: Of 190 patients approached, 174 completed the survey, constituting a response rate of 95%. Most participants (72%) were receiving thromboprophylaxis. However, only 32 and 15% reported knowledge of deep vein thrombosis (DVT) and pulmonary embolism (PE), respectively. Fifty-five percent of participants with knowledge of DVT identified swelling of the leg as a symptom. Risk factors for blood clot development were correctly identified by about half of participants, although most agreed that blood clots can cause death (77%). The level of awareness of DVT or PE did not significantly differ by respondents' demographics. However, awareness of DVT or PE was significantly higher among those with a personal or family history of VTE. Participants had positive perceptions of thromboprophylaxis and were satisfied with treatment (> 69%), but perceived its adverse effects less favorably and reported lower satisfaction with the information provided about DVT and PE (46%). CONCLUSION: This study demonstrates the lack of awareness of VTE, DVT, and PE among hospitalized patients. More attention must be paid to patient education to ensure safe and high-quality patient care.

Assessment of anti-factor Xa activity of enoxaparin for venous thromboembolism prophylaxis in morbidly obese surgical patients.

BACKGROUND: Venous thromboembolism (VTE) can be encountered by 60% of hospitalized patients. Anticoagulants have been recommended to reduce the risk of VTE in patients with risk factors. However, no specific dosing recommendations for obese patients are provided in the current practice guidelines. The purpose of this study was to determine the efficacy and safety of weight-based dosing of enoxaparin for VTE prophylaxis among morbidly obese patients undergoing surgery. METHODS: Adult patients were enrolled if they have a body mass index (BMI) of ≥35 kg/m2 and were scheduled for surgery. These patients were prescribed enoxaparin (0.5 mg/kg subcutaneously [SC] once daily). Peak anti-factor Xa levels were measured 4 h after the third dose of enoxaparin. The primary outcome measure was to determine whether a weight-based dosing of enoxaparin of 0.5 mg/kg produce the anticipated peak anti-Xa levels (0.2-0.6 IU/m) among obese patients undergoing surgery. Secondary outcomes include the incidence of VTE, the incidence of minor or major bleeding, and the incidence of heparin-induced thrombocytopenia (HIT). RESULTS: Fifty patients were enrolled in the study. The mean age was 53 ± 16 years, 74% of the patients were female. The mean BMI was 40.5 ± 5, and the average enoxaparin dose was 50 ± 9.8 SC daily. Nearly 88% of the patients reached the target anti-factor Xa (0.427 ± 0.17). None of the patients developed HIT or VTE. There was no incidence of major or minor bleeding. CONCLUSIONS: Weight-based enoxaparin dose led to the anticipated peak anti-Xa levels (0.2-0.6 IU/mL) in most of the morbidly obese study patients undergoing surgery without any evidence of major side effects. The weight-based dosing of enoxaparin was also effective in preventing VTE in all patients. Although these results are promising, further comparative trials are needed in the setting of morbidly obese surgical patients.

Pharmacy Educators' Knowledge of Medication Safety and Their Perception Toward Its Integration into the Doctor of Pharmacy Curriculum in Saudi Arabia.

Objective. To assess pharmacy educators' knowledge of medication safety and their perception toward its integration into the PharmD curriculum in Saudi Arabia. Methods. A survey was administered to pharmacy educators at a college of pharmacy and its affiliate hospital. Knowledge, training, and perception toward integrating medication safety into the PharmD curriculum were evaluated. Results. More than 50% of respondents indicated that medication safety should be covered within selected courses, and 65% indicated that such courses should be mandatory. Pharmacy practice educators had significantly higher levels of knowledge about medication safety than their nonpractice counterparts. Perceptions toward medication safety integration into the curriculum varied significantly by general discipline, academic degree, years of experience, and gender. Conclusion. Pharmacy educators in Saudi Arabia understand the importance of medication safety and its integration into the curriculum. Further studies are needed to guide curricular change to achieve this integration.

Medication Adherence and Treatment Satisfaction Among Renal Transplant Recipients.

BACKGROUND Evidence suggests that patients who are more satisfied with their treatment show better adherence with the prescribed therapy. Although there is valuable data about medication adherence among renal transplant recipients (RTRs), there is a limited literature about their treatment satisfaction and its relation to adherence. The aim of the present study was to investigate factors that can predict medication adherence and to explore the relationship between treatment satisfaction and medication adherence in renal transplant recipients. MATERIAL AND METHODS Adult RTRs were included in the study using convenient sampling. The participants were asked to complete the 8-item Morisky Medication Adherence Scale (MMAS-8) and Treatment Satisfaction Scale TSQM 1.4 in addition to several socio-demographic and treatment-related data. The results were statistically analyzed using univariate and multivariate logistic regression modelling in a stepwise procedure. RESULTS A total of 151 RTRs were included in the study, of which 52 were classified as adherent (34%). Univariate analysis showed that, in comparison with non-adherent RTRs, the adherent group demonstrated significantly higher satisfaction scores in the domains of convenience (96.6±8.7 vs. 85.3±19.3), side effects (95.9±14.1 vs. 82.6±24.1), and global satisfaction (93.4±9.8 vs. 86.7±16.7), while they had marginally higher satisfaction scores in the effectiveness domain (90.4±11.6 vs. 86.5±14.5). Results from multiple logistic regression showed that higher likelihood of adherence was significantly associated with increased satisfaction score in the convenience domain [AOR=1.76, 95% CI=(1.21, 2.55); p=0.003] and marginally related to increased satisfaction scores in the side effects domain [AOR=1.31, 95% CI=(0.99, 1.74); p=0.061]. Male RTRs were significantly more likely to be adherent than female RTRs [AOR=2.23, 95% CI=(1.02, 4.84); p=0.043]. CONCLUSIONS Although the adherence rate among RTRs is relatively low, males and RTRs who reported higher treatment satisfaction (convenience and side effects domains) showed better medication adherence. It is recommended that interventional programs for the improvement of dialysis patient adherence should be developed, in addition to designing strategies to improve treatment convenience and knowledge of medication side effects.

Assessment and comparison of CHADS2, CHA2DS2-VASc, and HAS-BLED scores in patients with atrial fibrillation in Saudi Arabia.

AIMS: No previous reports on the utilization of CHADS2, CHA2DS2-VASc, and HAS-BLED scores in atrial fibrillation (AF) patients in Saudi Arabia have been identified in the literature. The main objectives of this study were to assess and compare the distribution of CHADS2, CHA2DS2-VASc, and HAS-BLED scores and to identify the most common risk factors for stroke and bleeding among AF patients attending clinical pharmacists managed anticoagulation clinic. SETTINGS AND DESIGN: This cross-sectional study was conducted over 2 months period at clinical pharmacists managed anticoagulation clinic. METHODS: CHADS2, CHA2DS2-VASc, and HAS-BLED scores were calculated and compared for all eligible patients. RESULTS: Two hundred and sixty-four patients with AF were included in the analysis. The number of patients at low risk for stroke was found to be 14 (5.3%) using CHADS2 and only 4 (1.5%) using CHA2DS2-VASc. On the other hand, 64 patients (24.2%) were found at moderate risk for stroke using CHADS2 compared with 17 patients (6.4%) using CHA2DS2-VASc. Most of the patients were found to be at high risk for stroke using either the CHADS2 (70.5%) and CHA2DS2-VASc (92%). The study also revealed that most of the patients were at moderate (63.3%) to high (27.7%) risk of bleeding. CONCLUSIONS: The results of this study show that the percentage of patients at high risk for stroke and bleeding is very high. The study revealed that this could be attributed to the high prevalence of modifiable risk factors for stroke and for bleeding in Saudi patients with AF.

Adherence and treatment satisfaction in liver transplant recipients.

BACKGROUND/AIMS: Liver transplantation (LT) is a life-saving intervention for patients with liver failure. LT recipients' adherence to their therapeutic regimen is an essential element for graft survival. According to WHO, the impact of medication non-adherence in solid organ transplantation has shown to cost $15-100 million annually. The aim of the present study was to identify the factors that best predict medication adherence and to explore the relationship between treatment satisfaction and medication adherence in liver transplant recipients. PATIENTS AND METHODS: Adult liver transplant patients at King Abdulaziz Medical City were included in the study. Patients completed the 8-item Morisky Medication Adherence Scale (MMAS-8) and the Treatment Satisfaction Questionnaire for Medication (TSQM 1.4) in addition to several socio-demographic and transplant-related data. RESULTS: A total of 154 patients were included in the study and of these 59.7% were adherent. Older age was a significant predictor of adherence (P < 0.05). The mean treatment satisfaction score was 91.9 ± 12.7 in Effectiveness, 80.0 ± 25.9 in Side Effects, 83.5 ± 15.7 in Convenience, and 94.6 ± 8.6 in Global Satisfaction. Further analysis indicated that patients in the adherent group had reported significantly higher satisfaction scores than those in the non-adherent group (P < 0.05) in all treatment satisfaction domains: Effectiveness (94.4 ± 10.4 vs. 88.6 ± 14.8), Side Effects (83.9 ± 22.0 vs. 74.2 ± 30.1), Convenience (87.0 ± 13.9 vs. 77.2 ± 16.1), and Global Satisfaction (96.9 ± 6.6 vs. 91.2 ± 8.6). CONCLUSION: Older patients and those who were more satisfied with their treatment tend to have better adherence to the prescribed medications. Therefore, increasing patients' satisfaction with their treatment should be an integral element of future care plans designed to improve treatment outcomes in liver transplant recipients.

Exploring quality of life among renal and liver transplant recipients.

BACKGROUND AND OBJECTIVES: Despite the worldwide recognition of the importance of quality of life (QOL) assessment, research data on QOL for renal and liver transplant recipients are limited. The main objective of this study was to explore and compare QOL in renal and liver transplant patients. DESIGN AND SETTING: This cross-sectional study was conducted at at King Abdulaziz Medical City, Saudi Arabia. PATIENTS AND METHODS: Saudis 16 years of age or more who received liver or renal transplantation at least three months before the study participated. QOL was evaluated using the World Health Organization QOL instrument (WHOQOL-BREF). RESULTS: Renal and liver transplant patients were highly or moderately satisfied with most circumstances of life. Using data for subjects in all WHO centers, renal and liver transplant patients domain scores in this study were significantly higher in the psychological health domain, social relations and environmental domain (P < .0001). The results also show that renal and liver transplant recipients who were male, or had higher education or who were employed had higher QOL scores. CONCLUSIONS: This study found that both renal and liver transplant recipients achieved very high QOL domain scores as compared with international data. Lower QOL was significantly associated with social disadvantages, suggesting that these patients may require more focused attention and counselling following transplantation.

Strategic initiatives to maintain pharmaceutical care and clinical pharmacists sufficiency in Saudi Arabia.

OBJECTIVES: The shortage of clinical pharmacists in Saudi Arabia has limited the full implementation of pharmaceutical care in most of its hospitals. The National Guard Health Affairs hospitals. This work discussed the Department of Pharmaceutical Care, and the King Saud Bin Abdulaziz University for Health Sciences College of Pharmacy four initiatives that were planned in 2009-2010 to develop and recruit clinical pharmacists, practitioners, or faculty. METHODS: The combined initiatives were aimed at (1) instituting a 4-year clinical skills development career ladder, (2) expanding the National Guard Health Affairs postgraduate residency program, (3) offering scholarships to qualified pharmacy graduates to pursue the PharmD degree and a PGY-1 residency training in the United States, and (4) recruiting non-Saudi clinical pharmacists educated and trained in the United States to ameliorate the current shortage of practitioner. RESULTS: The current number of clinical pharmacists practicing at the National Guard Health Affairs at central region is 24, most of whom are Board Certified by the American Pharmacists Association Board of Pharmacy Specialties. CONCLUSIONS: The four initiatives, based on current trends, suggest that 60-65 positions will be added by 2017-2018, barring attrition. Saudi Arabia and many developing countries will continue to experience a shortage in clinical pharmacists due to the high demand for clinical pharmacy services. A multifaceted approach is recommended to address the problem.

Investigation of the effectiveness of antibacterial prophylaxis in renal transplant recipients.

INTRODUCTION: Bacterial urinary tract infections (UTIs) are very common complications in renal transplant recipients (RTRs). METHODOLOGY: This study is a follow-up to a previous investigation of post-renal transplant UTIs, which led to changes in the antibacterial agents used for prophylaxis and its duration. In this retrospective study of the medical records of 86 RTRs, the incidence, risk factors, causative bacteria, and duration prophylaxis were investigated. RESULTS: The average age of the RTRs was 41.55 ± 14.06 years, and two-thirds of them were males. A total of 57.3% of the RTRs received cadaveric kidneys; the rest received kidneys from living related donors. The prescribed regimen (one month or three months of co-trimoxazole and norfloxacin) was completed by 75% of the RTRs. The incidence of UTIs in the RTRs who received this prophylaxis was 32.3%, which was significantly lower than the incidence with norfloxacin alone (56%). Female gender was found to be a risk factor for post-renal transplant UTIs. Escherichia coli was the most common pathogen (51.7%), followed by Klebsiella and Enterobacter (17.2% each). Most UTIs (86.2%) were detected within the first post-transplant month. CONCLUSIONS: There was no clear advantage to prescribing antibacterial prophylaxis for three months versus one month, as 86.2% of the UTIs occurred within the first month post-transplant regardless of prophylaxis duration. Using co-trimoxazole/norfloxacin compared to norfloxacin alone did positively affect patient outcome by reducing the incidence of UTIs. This study recommends antimicrobial sensitivity-guided modification of the antibacterial agents used for prophylaxis rather than extension of its duration.

Medication adherence among adult patients on hemodialysis.

Medication adherence was assessed in 89 patients on hemodialysis (HD) at the King Abdul Aziz Medical City using an Arabic version of the Morisky Medication Adherence Scale (MASS-8). The results of the study revealed that 31.46% and 40.45% of the participants showed low and medium adherence, respectively, while 28.09% showed high medication adherence. Accordingly, 71.91% of the patients visiting the dialysis unit were considered medication non-adherent. While being of older age (P = 0.012), being married (P = 0.012) increased the level of adherence, being of medium level of education (P = 0.024) decreased adherence levels. On the other hand, gender, presence of a care-giver, number of members in the household and employment status seems to have no effect on the level of medication adherence. These results call upon the practitioners in HD units to develop intervention programs that can increase the level of medication adherence.

Synthesis, Antibacterial Evaluation and QSAR of α-Substituted-N4-Acetamides of Ciprofloxacin and Norfloxacin.

Twenty six α-substituted N4-acetamide derivatives of ciprofloxacin (CIPRO) and norfloxacin (NOR) were synthesized and assayed for antibacterial activity against Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus and Bacillus subtilis. The derivatives were primarily more active against Gram-positive bacteria. The CIPRO derivatives, CD-7 (Ar = 3-chlorophenyl), CD-9 (Ar = 2-pyrimidyl) and CD-10 (α-phenyl, Ar = 2-pyrimidyl), exhibited lower MIC values, 0.4-0.9 µM, against Staphylococcus aureus than CIPRO, while only compound CD-10 exhibited better activity, 0.1 µM, against Bacillus subtilis than CIPRO. In addition, compounds CD-5 (Ar = 2-methoxyphenyl), CD-6 (α-phenyl, Ar = 2-methoxyphenyl), CD-7 (Ar = 3-Chlorophenyl), CD-8 (α-phenyl, Ar = 3-chlorophenyl) and CD-9 (Ar = 2-pyrimidyl) showed MIC values below 1.0 µM against this strain. The NOR derivatives showed lower activity than NOR itself against Staphylococcus aureus, although ND-6 (α-phenyl, Ar = 2-methoxyphenyl) and ND-7 (Ar = 3-chlorophenyl) showed MIC values less than 2 µM. Two NOR derivatives, ND-7 and ND-6, exhibited MIC values of 0.7 and 0.6, respectively, which were comparable to that of NOR against Bacillus subtilis, while compounds ND-8 (α-phenyl, Ar = 3-chlorophenyl) and ND-10 (α-phenyl, Ar = 2-pyrimidyl) exhibited MIC values less than 1.0 µM against the same strain. QSAR revealed that while polarity is the major contributing factor in the potency against Staphylococcus aureus, it is balanced by lipophilicity and electron density around the acetamide group. On the other hand, electron density around the introduced acetamide group is the major determining factor in the activity against Bacillus subtilis, with a lesser and variable effect for lipophilicity.

Stability of Recombinant Tissue Plasminogen Activator at -30 °C over One Year.

Recombinant tissue plasminogen activator (rt-PA) is used to restore patency and avoid inadvertent removal of peripheral and central venous catheters. rt-PA was reconstituted (1 mg/mL) then cryopreserved at -30 °C for 1, 2, 3, 6, 8, and 12 months and, then its stability was determined. After cryopreservation for one and two months, rt-PA kept more than 95% of its activity compared to standard samples, while cryopreservation for three months caused 8% loss of activity. However, after cryopreservation for six months or more, rt-PA retained only 87.5% or less activity compared to standard samples. Therefore, it is recommended that reconstituted rt-PA be cryopreserved at -30 °C for a maximum period of three months.