The effect of caffeine intake and passive smoking on umbilical cord blood unit's quality parameters.

Today cord blood (CB) is a valuable source of hematopoietic stem cells to treat many hematological disorders. One of the limitations of CB utilization is the reduced number of nucleated cells including stem cells. Therefore, CB banks around the world have developed strategies in an attempt to improve donor selection and the quality of the CB inventory. This study aimed to determine the impact of passive smoking and caffeine consumption on CB quality. CBs were obtained from mothers who gave birth at King Abdulaziz Medical City. All mothers gave their informed consent. Personal interviews about the mother's demographics, smoking status and exposure, and caffeine consumption executed, followed by a chart review to analyze maternal and neonatal factors. Laboratory testing was performed on all collected CB units. Using descriptive statistics, maternal and newborn factors were analyzed. T-test or Mann-Whitney U Test, as appropriate, for continuous variables analysis to study the effect of second hand smoking and coffee consumption for the primary outcome. Our study demonstrated a reduction in CB MNC, including lymphocytes, in caffeine consumers among pregnant donors, as well as a reduction in cell potency activities, including total CFU and BFU-E. The effect of passive cigarette smoking on the same cohort was insignificant. Outcome of this study will help in optimizing the quality and quantity of stem cell harvesting from CB to get the maximum benefit and such knowledge will raise the awareness among pregnant women.

A unilateral linear pattern of lichen planus pigmentosus.

Lichen planus pigmentosus (LPP) is a rare chronic variant of lichen planus. LPP distribution tends to be symmetrical and is frequently seen on the face, neck, and trunk. Atypical clinical patterns of LPP, including segmental, zosteriform, and linear, were reported in the literature. Herein, we report a rare presentation of LPP in a 16- year-old female with a unilateral linear pattern along the Blascko lines.

Pemphigus vulgaris mimicking Steven-Johnson syndrome/toxic epidermal necrolysis: report of an unusual case.

Pemphigus vulgaris (PV) is an autoimmune blistering disease affecting the skin and mucosa. It clinically presents as painful erosions, mainly in the oral cavity, and flaccid blisters and erosions on the skin. Steven-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) is a severe mucocutaneous drug hypersensitivity reaction characterized by painful, dusky, erythematous eruptions that often progress to blisters, erosions, and extensive epidermal detachment accompanied by systemic symptoms. Herein, we report the case of a 48-year-old man who presented with extensive skin and mucosal lesions following the ingestion of an unknown medication. The patient's symptoms clinically mimicked SJS, and accordingly, a preliminary diagnosis of SJS/TEN was made. However, clinical investigation of skin biopsy and direct immunofluorescence assay results indicated PV, and a final diagnosis of PV was established.

Hybrid machine learning approach for Arabic medical web page credibility assessment.

For many people, the Internet is their primary source of knowledge in today's modern world. Internet users frequently seek health-related information in order to better understand a health problem, seek guidance, or diagnose symptoms. Unfortunately, most of this information is inaccurate or unreliable, making it difficult for regular users to discern reliable sources of information. To determine online source reliability, specific knowledge and domain expertise are necessary. Researchers in health informatics studied a number of linguistic and non-linguistic indicators to assist ordinary individuals in judging medical web page credibility. This study proposes a method that automates the process of assessing the reliability of online medical sites based on textual and non-textual characteristics. To evaluate the proposed approach, we developed a real-world dataset of Arabic web pages that provide medical information. This dataset is the first Arabic medical web page dataset for content credibility evaluation. The hybrid approach was assessed using multiple machine learning and deep learning algorithms on the dataset, providing an accuracy and F1-score of 79% and 77%, respectively. We also identify the most observable patterns that help evaluate or detect unreliable web pages written in Arabic.

Awareness, Concerns, and Protection Strategies Against Bloodborne Viruses Among Surgeons.

BACKGROUND: Surgeons are at high risk of contracting infectious viruses such as human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV) through exposure to patients' blood. The purpose of this study was to assess the surgeons' awareness of contracting bloodborne viruses.  Methods: A cross-sectional study with a questionnaire distributed to 241 surgeons at King Abdulaziz Medical City - Riyadh (KAMC-R) during the period June 2017 through January 2018. Descriptive statistics were used to analyze data collected using Stata®, v14 (StataCorp LLC, College Station, Texas, USA). Categorical variables were analyzed using Pearson chi-square test. P-value of < 0.05 was considered significant. RESULTS: A total of 241 surgeons answered the questionnaire, 179 (74.3%) surgeons were male and 62 (25.7%) were female. The mean age ± standard deviation (SD) of male surgeons was 35.8 ± 11.0 years while for females was 33.3 ± 9.1 years. The majority of our cohort were vaccinated for HBV (96% in males and 97% in females). Two-thirds of the study cohort did not know the conversion rate post-needlestick injury by HIV, HBV, and HCV. Two-thirds of the study cohort think there is a need for HIV screening before surgery. Mixed answers were received from the cohort when asked about their concern regarding contracting HIV infection from their patients; only one-third of the surgeons were extremely concerned. When asked about the risk of needlestick injury during treating patients positive for HBV, the majority of the surgeons said no. However, a significant difference between the female and male surgeons was found in which 12 of the 62 female surgeons answered yes (19.4%) compared to 11 of the 179 male surgeons (6.1%) (p = 0.002). CONCLUSION: The majority of our surgeons are vaccinated for HBV. However, female surgeons appear to be at higher risk of needlestick injury from HBV patients. This requires further investigation into the reasons for such high incidents. More education is needed about bloodborne viruses.

Gender differences in practicing standard precautions against blood-borne pathogens among surgeons at a tertiary care center: A cross-sectional study.

BACKGROUND: Surgeons are at an increased risk of contracting blood-borne pathogens. The aim of this study was to evaluate gender difference, surgical position, surgical experience, and subspecialty regarding surgeons' compliance to standard precautions. METHODS: A cross-sectional questionnaire-based study was performed using a purposive sampling. A total of 241 surgeons were surveyed from June 2017 to January 2018. RESULTS: In total, 179 (74.3%) males and 62 (25.7%) females completed the questionnaire. The gender difference was evident when the type of surgery was extremely important in influencing the decision on wearing double gloves (DGs); 108 (60.3%) male surgeons versus 27 (43.5%) female surgeons (P = 0.022). Although a total of 17 (30.3%) surgeons reported being extremely and very concerned about contracting human immunodeficiency virus through their work, they had never tried DG (P = 0.027). CONCLUSION: This study revealed that the decision of wearing DG was affected by several factors. Surgeons' decision to wear DG was influenced by the type of surgery. This study showed that most surgeons reported lack of adherence to barrier precaution measures.

Pattern of Dermatological Disease Encountered in a Hematology Ward: A Retrospective Analysis of Dermatology Consultation in a Hematology Ward in a Tertiary Care Center in Saudi Arabia.

Introduction. Skin manifestations are common in hematology ward patients and can result from infection, malignancy, or chemotherapy. The purpose of this study was to identify the most common dermatological problems encountered in the adult hematology ward at King Abdullah Specialist Children Hospital (KASCH). Methods. This was retrospective chart review of 78 dermatology consultations based on electronic health records for all inpatients in hematology wards at KASCH between January 2016 and December 2017. Data were presented as mean ± SD for continuous variables. Results. During the study period, a total of 1391 inpatients were referred to the dermatology department. A total of 403 (29.0%) referrals were from the internal medicine department and 78 (5.6%) were from the hematology department, six of which were rejected by the dermatology department. Almost all requests for referral were managed on the same or the next day with only two requests after 3 days. There were more female (n = 40; 51.3%) than male patients (n = 38; 48.7%) and the average age ± SD was 40.7 ± 19.8 years. Patients were diagnosed with a diverse range of hematological diseases. A total of 27 (35.1%) patients were diagnosed with acute myeloid leukemia. Overall, 98 differential diagnoses were made by dermatologists with only 26 being confirmed by skin biopsy. Eight (30.8%) patients were diagnosed with graft versus host disease confirmed by skin biopsy. The diagnoses were changed in 12 cases after skin biopsy. Several types of dermatitis were diagnosed in hematology ward patients including stasis dermatitis and contact dermatitis. The source of infection was not specified in most cases and the infection was treated empirically. Conclusion. Various dermatological disorders and cutaneous manifestations are observed in hematology inpatients with morbilliform drug eruption and graft versus host disease being the most common.