Publications by authors named "Ali Ammar"

The stepped care model is a hierarchical healthcare approach that matches treatment intensity to a patient's condition, ensuring efficient resource use while providing appropriate care. This study conducted a qualitative process evaluation to assess the feasibility, acceptability, and contextual suitability of a multicenter, parallel-group, superiority, randomized controlled trial addressing psychological distress among adults in Jordan. The trial applied the stepped care framework using two scalable WHO interventions adapted to the Jordanian context.

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Geometric frustration in two-dimensional Ising models allows for a wealth of exotic universal behavior, both Ising and non-Ising, in the presence of quantum fluctuations. In particular, the triangular antiferromagnet and Villain model in a transverse field can be understood through distinct XY pseudospins, but have qualitatively similar phase diagrams including a quantum phase transition in the (2+1)-dimensional XY universality class. While the quantum dynamics of modestly-sized systems can be simulated classically using tensor-based methods, these methods become infeasible for larger lattices.

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  • This study examined 384 post-operative cardiovascular disease (CVD) patients to evaluate the prevalence and impact of potential drug-drug interactions (pDDIs).
  • Using two drug interaction databases, Micromedex and Lexicomp, researchers found that nearly all patients had at least one pDDI, with a median of over 6 pDDIs per patient, and a significant percentage categorized as major interactions.
  • The research also identified unique interactions not documented in one of the databases, underscoring the importance of regular monitoring and the role of clinical pharmacists in preventing harmful pDDIs in high-risk patients.
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  • - Beta thalassemia is a genetic blood disorder leading to inefficient red blood cell production, affecting about 8.5% of people in the UAE and causing significant health and financial issues.
  • - Traditional treatment options for β-thalassemia are limited and complicated, prompting research into gene therapy as a possible new and more effective solution.
  • - Gene therapy shows promise for permanently curing β-thalassemia, with treatments like FDA-approved ZYNTEGLO offering a potential one-time fix, though the high cost of $2.8 million per patient remains a major barrier.
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Background: We conducted this study to assess the compliance with secondary rheumatic prophylaxis among preoperative patients with rheumatic mitral valve disease undergoing valvular heart surgery at a tertiary care cardiac hospital in a developing country.

Methods: This is a descriptive cross-sectional study conducted at a tertiary care cardiac hospital in Karachi, Pakistan. The inclusion criteria encompassed patients of any sex, aged between 18 and 80 years, who had been diagnosed with rheumatic mitral valve disease through transthoracic echocardiography and had undergone valvular heart surgery.

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A neglected mechanism for pressure-responsive color change is demonstrated using cellulose acetate composites prepared by direct (solvent) immersion annealing (DIA), with different loadings of activated charcoal filler. Namely, compressive plastic deformation of the translucent cellulose acetate leads to a decrease in the optical path length and a concomitant increase in the visibility of the opaque contrasting filler. Composites bearing 1-7 wt% activated charcoal exhibited a linear relationship between applied pressure and resulting pressure mark brightness in the range of 12-56 MPa.

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Heart rate is an essential vital sign to evaluate human health. Remote heart monitoring using cheaply available devices has become a necessity in the twenty-first century to prevent any unfortunate situation caused by the hectic pace of life. In this paper, we propose a new method based on the transformer architecture with a multi-skip connection biLSTM decoder to estimate heart rate remotely from videos.

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This paper presents a computer vision-based approach to chronic subdural hematoma segmentation that can be performed by one click. Chronic subdural hematoma is estimated to occur in 0.002-0.

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Plants have certain adaptation mechanisms to combat temperature extremes and fluctuations. The heat shock protein (HSP90A) plays a crucial role in plant defence mechanisms under heat stress. In silico analysis of the eight TaHSP90A transcripts showed diverse structural patterns in terms of intron/exons, domains, motifs and cis elements in the promoter region in wheat.

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In this paper, we introduce a novel Maximum Power Point Tracking (MPPT) controller for standalone Wind Energy Conversion Systems (WECS) with Permanent Magnet Synchronous Generators (PMSG). The primary novelty of our controller lies in its implementation of an Arbitrary Order Sliding Mode Control (AOSMC) to effectively overcome the challenges caused by the measurement noise in the system. The considered model is transformed into a control-convenient input-output form.

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  • The study investigates how different postures when scanning the hips can affect the diagnosis of osteoporosis using DXA technology.
  • A specialized device was created to adjust cadaver femurs in specific angles for scanning, focusing on flexion and rotation.
  • Results showed that significant changes in diagnostic metrics were only seen with flexion above 12°, while rotation had no notable impact, suggesting flexibility in patient positioning without affecting fracture risk assessments.
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Persistent primitive hypoglossal artery (PPHA) is a highly uncommon abnormal connection between the internal carotid artery (ICA) and vertebral artery (VA), with reported incidences ranging from 0.027 to 0.26%.

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Background: Blood-derived materials have been used recently to accelerate orthodontic tooth movement, but there are conflicting reports on their effectiveness.

Objective: To evaluate the potential effect of local injection of platelet-rich plasma (PRP) and injectable platelet-rich fibrin (i-PRF) on the rate of orthodontic tooth movement.

Trial Design: A single-center, three-arm, parallel-group randomized controlled trial.

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  • Driving behaviour analysis is increasingly important due to rising traffic accidents, linking driver state with driving environment and actions.
  • The paper investigates the relationship between drivers' vital signs (like heart rate and blood pressure), eye state, head pose, vehicle maneuvers, and external events, utilizing advanced models and synchronized video datasets.
  • Results show weak correlations between certain driver states (heart rate, blood pressure) and specific driving actions (maneuvers, overtaking), along with some significant correlations between head movement and driving events.
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The incidence of premature ischemic heart disease (IHD) is increasing because of urbanization, a sedentary lifestyle, and various other unexplored factors, especially in South Asia. This study aimed to assess the distribution of premature ST-elevation acute coronary syndrome (STE-ACS) with its clinical and angiographic pattern along with hospital course in a contemporary cohort of patients who underwent primary percutaneous intervention at a tertiary care center in the South Asian region. We included consecutive patients of either gender diagnosed with STE-ACS and who underwent primary percutaneous intervention.

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Background: Acute hyperglycemia is considered an independent prognosticator of both in-hospital and long-term outcomes in patients with acute coronary syndrome (ACS). This study aimed To analyze the incidence of acute hyperglycemia and its impact on the adverse in-hospital outcome in patients with STE-ACS undergoing primary percutaneous coronary intervention (PCI).

Methods: In this study, we enrolled patients presenting with STE-ACS and undergoing primary PCI at a tertiary care cardiac center.

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Objectives: To evaluate the admission neutrophil-to-lymphocyte ratio (NLR) for risk stratification for in-hospital outcomes and complications in non-ST-elevation acute coronary syndrome (non-ST-ACS) patients.

Methods: We recruited consecutive patients with non-ST-ACS. The NLR was obtained and stratified as low, intermediate, and high-risk based on <3.

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Objective: This study aimed to assess the levels of pain, discomfort, and functional impairment associated with the en-masse retraction of the upper anterior teeth when treating Class II division 1 malocclusion patients using traditional corticotomy or flapless corticotomy. In addition, an assessment of patients' satisfaction with the selected surgical intervention was undertaken at one-month post-operatively.

Materials And Methods: The study sample comprised 40 patients with Class II division 1 malocclusion, randomly assigned to either the traditional corticotomy group (n=20) or the flapless corticotomy group (n=20).

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Introduction: The traditional methods of deboning metal brackets exert excessive force, resulting in enamel scratches, fractures, and patient discomfort. The objective of this study was to evaluate the effectiveness of using two intensity levels of a diode laser for debonding metallic orthodontic brackets as an alternative to the conventional debonding method.

Materials And Methods: Sixty intact, extracted human premolar teeth were used in this study, and metal orthodontic brackets were bonded to the buccal surface of these teeth.

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Purulent pericarditis due to   has been increasingly rare since the advent of antibiotics; however, it still carries a high mortality rate, especially in the setting of tamponade. Bedside transthoracic echocardiogram (TTE) is a useful, cheap, and underutilized tool that can aid in the diagnosis, treatment, and further management of patients presenting to the emergency department with chest pain, as well as during cardiac resuscitation. In this report, we present a case of an acute purulent  pericarditis of an unknown primary source in a patient coinfected with coronavirus disease 2019 (COVID-19) pneumonia, resulting in cardiac tamponade and cardiac arrest that resolved with the aid of bedside echocardiography-guided pericardiocentesis.

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The additive manufacturing of concrete, also known as 3D-printed concrete, is produced layer by layer using a 3D printer. The three-dimensional printing of concrete offers several benefits compared to conventional concrete construction, such as reduced labor costs and wastage of materials. It can also be used to build complex structures with high precision and accuracy.

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Background: Syria has been facing a dreadful crisis for the past 11 years, which has had a significant toll on the healthcare system of the country, and its ability to adequately manage acute injuries. In this research, we study the epidemiology and outcomes of burn patients admitted to the burn center of Al-Mouwasat Hospital in Damascus, Syria.

Methods: A retrospective cohort research was conducted from January 2017 to December 2021.

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In this paper, we present a two stages solution to 3D vehicle detection and segmentation. The first stage depends on the combination of EfficientNetB3 architecture with multiparallel residual blocks (inspired by CenterNet architecture) for 3D localization and poses estimation for vehicles on the scene. The second stage takes the output of the first stage as input (cropped car images) to train EfficientNet B3 for the image recognition task.

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