Ziyad Almalki

Dr. Ziyad Almalki

Prince Sattam Bin Abdulaziz University, Al Kharj, Ar Riyāḑ, Saudi Arabia
orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
8 March 2022 in PLOS ONE
Verified
Journal Article
Open access
PDF file
JMJesse D. Malkin
Jesse D. Malkin
DBDrishti Baid
Drishti Baid
RAReem F. Alsukait
Reem F. Alsukait
TATaghred Alghaith
Taghred Alghaith
MAMohammed Alluhidan
Mohammed Alluhidan
NANahar Alazemi
Nahar Alazemi
Context: The prevalence of overweight and obesity in Saudi Arabia has been rising. Although the health burden of excess weight is well established, little is known about the economic burden. Aims: To assess the economic burden—both direct medical costs and the value of absenteeism and presenteeism—resulting from overweight and obesity in Saudi Arabia. Settings and design: The cost of overweight and obesity in Saudi Arabia was estimated from a societal perspective using an epidemiologic approach. Methods and materials: Data were obtained from previously published studies and secondary databases. Statistical analysis used: Overweight/obesity-attributable costs were calculated for six major noncommunicable diseases; sensitivity analyses were conducted for key model parameters. Results: The impact of overweight and obesity for these diseases is found to directly cost a total of $3.8 billion, equal to 4.3 percent of total health expenditures in Saudi Arabia in 2019. Estimated overweight and obesity–attributable absenteeism and presenteeism costs a total of $15.5 billion, equal to 0.9 percent of GDP in 2019. Conclusions: Even when limited to six diseases and a subset of total indirect costs, results indicate that overweight and obesity are a significant economic burden in Saudi Arabia. Future studies should identify strategies to reduce the health and economic burden resulting from excess weight in Saudi Arabia.

1 January 2020 in Journal of Gynecologic Oncology
Verified
Journal Article
Open access
PDF file
XYXiaomeng Yue
Xiaomeng Yue
JPJane M. Pruemer
Jane M. Pruemer
AHAna Lucia Hincapie
Ana Lucia Hincapie
ZAZiyad Almalki
Ziyad Almalki
JGJeff J. Guo
Jeff J. Guo
Yue X, et al. J Gynecol Oncol. 2019 Jun;31:e52. https://doi.org/10.3802/jgo.2020.31.e52

Verified
Journal Article
Open access
PDF file
AAAbdulaziz Ibrahim Alzarea
Abdulaziz Ibrahim Alzarea
Nabil AlruwailiNabil Alruwaili
Nabil Alruwaili
MAMuhammad Ahmad
Muhammad Ahmad
Muhammad Usman MunirMuhammad Usman Munir
Muhammad Usman Munir
ABAdeel Masood Butt
Adeel Masood Butt
Naveed AhmadNaveed Ahmad
Naveed Ahmad
Biopolymer-based antibacterial films are attractive materials for wound dressing application because they possess chemical, mechanical, exudate absorption, drug delivery, antibacterial, and biocompatible properties required to support wound healing. Herein, we fabricated and characterized films composed of arabinoxylan (AX) and sodium alginate (SA) loaded with gentamicin sulfate (GS) for application as a wound dressing. The FTIR, XRD, and thermal analyses show that AX, SA, and GS interacted through hydrogen bonding and were thermally stable. The AXSA film displays desirable wound dressing characteristics: transparency, uniform thickness, smooth surface morphology, tensile strength similar to human skin, mild water/exudate uptake capacity, water transmission rate suitable for wound dressing, and excellent cytocompatibility. In Franz diffusion release studies, >80% GS was released from AXSA films in two phases in 24 h following the Fickian diffusion mechanism. In disk diffusion assay, the AXSA films demonstrated excellent antibacterial effect against E.coli, S. aureus, and P. aeruginosa. Overall, the findings suggest that GS-loaded AXSA films hold potential for further development as antibacterial wound dressing material.

5 March 2021 in Medicine
Verified
Journal Article
Open access
ZAZiyad Almalki
Ziyad Almalki
NANasser Alqahtani
Nasser Alqahtani
NSNajwa Tayeb Salway
Najwa Tayeb Salway
MAMona Marzoq Alharbi
Mona Marzoq Alharbi
AAAbdulhadi Alqahtani
Abdulhadi Alqahtani
TATahani Alshammari
Tahani Alshammari
Introduction: Due to the diversity of reports and on the rates of medications errors (MEs) in Saudi Arabia, we performed the first meta-analysis to determine the rate of medications errors in Saudi Arabia using meta-analysis in the hospital settings. Methods: We conducted a systematic literature search through August 2019 using PubMed, EMBASE, CINAHL, PsycINFO, and Google Scholar to identify all observational studies conducted in hospital settings in Saudi Arabia that reported the rate of MEs. A random-effects models were used to calculate overall MEs, as well as prescribing, dispensing, and administration error rates. The I 2 statistics were used to analyze heterogeneity. Results: Sixteen articles were included in this search. The total incidence of MEs in Saudi Arabia hospitals was estimated at 44.4%. Prescribing errors, dispensing errors, and adminstration errors incidents represent 40.2%, 28.2%, and 34.5% out of the total number of reported MEs, respectively. However, between-study heterogeneity was also generally found to be >90% (I-squared statistic). Conclusions: This study demonstrates the MEs common in health facilities. Additional efforts in the field are needed to improve medication management systems in order to prevent patient harm incidents.

3 November 2022 in Antibiotics
Verified
Journal Article
Open access
PDF file
NANehad Ahmad
Nehad Ahmad
Abdul HaseebAbdul Haseeb
Abdul Haseeb
Ahmad AlamerAhmad Alamer
Ahmad Alamer
ZAZiyad Almalki
Ziyad Almalki
AAAbdullah K. Alahmari
Abdullah K. Alahmari
Amer Hayat KhanAmer Hayat Khan
Amer Hayat Khan
Surgical site infections are among the most prevalent and costly healthcare-associated infections, resulting in poor patient outcomes and even death. Cefazolin is a first-generation cephalosporin antibiotic that is widely used for surgical prophylaxis in a variety of surgical disciplines. Although previous studies showed that cefazolin is effective in preventing surgical site infections, other agents, such as cefuroxime and ceftriaxone, were used excessively for surgical patients. The present analysis included only clinical trials comparing the efficacy of cefazolin to cefuroxime, ceftriaxone, and cefamandole in lowering SSIs using PubMed, Google Scholar, and ClinicalTrials.gov. Review Manager software (RevMan version 5.4) was used to conduct the meta-analyses. A total of 12,446 patients were included in the study. Among these patients, 6327 patients received cefazolin and 6119 patients received cefamandole, cefuroxime, or ceftriaxone. Our analysis showed that cefazolin is as effective as cefuroxime, cefamandole, and ceftriaxone in preventing surgical site infections. Hence, our findings have provided evidence for the use of cefazolin before surgeries because of its efficacy, as previous studies showed that it is inexpensive and safer than other agents.

15 November 2016 in PharmacoEconomics - Open
Verified
Journal Article
Open access
PDF file
ZAZiyad Almalki
Ziyad Almalki
XYXiaomeng Yue
Xiaomeng Yue
YXYing Xia
Ying Xia
PWPatricia R. Wigle
Patricia R. Wigle
JGJeff Jianfei Guo
Jeff Jianfei Guo
Background Given that the quinolones is one of the antibacterial classes most frequently used to treat patients with bacterial infections in the United States, any change in prescribing patterns of quinolones will impact Medicaid medical expenditures. Objectives This study was undertaken to examine trends in utilization, reimbursement, and prices of quinolone antibacterials for the US Medicaid population. Methods The publicly available Medicaid State Drug Utilization outpatient pharmacy files were used for this study. Quarterly and annual prescription counts and reimbursement amounts were calculated for each of the quinolones reimbursed by Medicaid from quarter 1, 1991 through quarter 2, 2015. Average per-prescription reimbursement, as a proxy for drug price, was calculated as the drug reimbursement divided by the number of prescriptions. Results The total annual number of quinolone prescriptions increased 402%, from 247,395 in the first quarter of 1991 to 1.2 million in the second quarter of 2015, peaking at 1.3 million in the first quarter of 2005. Similarly, the total reimbursement for quinolone agents increased by 245.5% over the same period. More than 80% of quinolone prescriptions reimbursed by Medicaid were for the second-generation agent, ciprofloxacin, and the third-generation agent, levofloxacin. The average payment per prescription for quinolones increased from US$43.8 in the first quarter of 1991 to US$87.6 in the second quarter of 2015. Conclusions A substantial rise in Medicaid expenditures on quinolones was observed during the 25-year study period, which was mainly because of rising utilization. Therefore, there is a need for additional research that has access to clinically relevant data with which to measure the rate of inappropriate quinolone use among the Medicaid population and associated clinical outcomes and healthcare costs.