Publications by authors named "Royya Modir"

Background: Predicting and managing spontaneous Cervical Artery Dissections (CeAD) is challenging due to the absence of tools for early identification of high-risk individuals. This study seeks to gather evidence on the predictive value of high-intensity transient signals (HITS) detected by Transcranial Doppler for recurrent ischemic events (IEs) following CeAD.

Methods: We performed a systematic review and meta-analysis of published studies along with the data from our cohort.

View Article and Find Full Text PDF

Background: Augmented Reality (AR) enables visualization of and interaction with both physical and virtual environments. Holograms can allow 3D image transmission to distant sites, allowing patients to interact with providers as if in the same space. Our prior publication resulted in high satisfaction/immersion for patients interacting with Holo-Stroke providers.

View Article and Find Full Text PDF

Background: Transcranial Doppler (TCD) is a non-invasive, bedside tool that allows for real-time monitoring of the patient's hemodynamic status following mechanical thrombectomy (MT). This systematic review and meta-analysis aims to evaluate the predictive value of TCD parameters following successful MT (Thrombolysis in Cerebral Infarction 2b-3).

Methods: In July 2024, we searched PubMed, Embase, and Scopus, to identify observational studies in which TCD parameters were measured within 48 hours of MT.

View Article and Find Full Text PDF

Background And Purpose: Cerebral vasomotor reactivity (VMR) is vital for regulating brain blood flow and maintaining neurological function. Impaired cerebral VMR is linked to a higher risk of stroke and poor post-stroke outcomes. This study explores the relationship between statin treatment intensity and VMR in patients with ischemic stroke.

View Article and Find Full Text PDF

Objective: To investigate whether utilizing a LDL-direct laboratory test rather than a lipid panel to determine LDL-C as part of the inpatient stroke and TIA workup is more cost-effective to the patient and hospital system. A retrospective analysis was conducted on all patients admitted to UCSD La Jolla and Hillcrest Hospital and discharged with a final diagnosis of ischemic stroke or transient ischemic attack between 7/2016 and 6/2019. A cost-analysis was extrapolated based on the current cost of each test as provided by the UCSD hospital billing department as of June 2020.

View Article and Find Full Text PDF

Purpose: Intravenous Thrombolysis (IV rt-PA) is administered in <10% of ischemic stroke patients. In rare cases, patients or caregivers refuse IV rt-PA treatment even when recommended by stroke practitioners. We sought to assess the characteristics and outcomes of patients who refuse IV rt-PA for acute ischemic stroke, and to compare outcomes between those who were treated with IV rt-PA and those who refused.

View Article and Find Full Text PDF

Background And Purpose: The COVID-19 pandemic has required the adaptation of hyperacute stroke care (including stroke code pathways) and hospital stroke management. There remains a need to provide rapid and comprehensive assessment to acute stroke patients while reducing the risk of COVID-19 exposure, protecting healthcare providers, and preserving personal protective equipment (PPE) supplies. While the COVID infection is typically not a primary cerebrovascular condition, the downstream effects of this pandemic force adjustments to stroke care pathways to maintain optimal stroke patient outcomes.

View Article and Find Full Text PDF

Objective: Embolectomy is standard for select occlusions up to 24 hours. Transfer patients may have worse outcomes than those originating in embolectomy centers. We developed the Brain Emergency Management Initiative (BEMI) protocol to streamline this transfer process and mimic the urgency that surrounds ST-elevation myocardial infarction cardiac evaluations.

View Article and Find Full Text PDF

Background Intravenous (IV) tissue plasminogen activator (rt-PA) is a proven therapy for stroke in the acute treatment window. Recent published data has shown efficacy for embolectomy for acute ischemic strokes within up to six, 16 and 24 hours in the anterior circulation but there is no guideline for optimal therapy for patients with posterior circulation stroke, specifically basilar artery occlusion (BAO) outside the standard IV rt-PA treatment window. Aim To evaluate differences in outcomes between maximal medical treatment versus thrombectomy in BAO.

View Article and Find Full Text PDF

Objective: To study the rate of symptomatic intracerebral hemorrhage (SxICH) and major systemic hemorrhage (MSH) after acute stroke treatments among different ethnicities/races.

Background: Studies have reported ethnic/racial disparities in intravenous tPA treatment (IV tPA). The adverse outcome of tPA and/or intra-arterial intervention (IA) among different ethnicities/races requires investigation.

View Article and Find Full Text PDF

Background: We investigated patterns in the time from recombinant tissue-type plasminogen activator (rt-PA) treatment to symptomatic intracranial hemorrhage (sICH) onset in acute ischemic stroke.

Methods: We retrospectively reviewed all admitted "stroke code" patients from 2003 to 2017 at the University of California San Diego Medical Center from a prospective stroke registry. We selected patients that received IV rt-PA within 4.

View Article and Find Full Text PDF

Background And Purpose: Identifying a last known well (LKW) time surrogate for acute stroke is vital to increase stroke treatment. Diffusion-weighted imaging (DWI) signal intensity initially increases from onset of stroke but mapping a reliable time course to the signal intensity has not been demonstrated.

Methods: We retrospectively reviewed stroke code patients between 1/2016 and 6/2017 from the prospective; Institutional review board (IRB) approved University of California San Diego Stroke Registry.

View Article and Find Full Text PDF

Introduction: Rapid imaging in acute stroke is critical and often occurs before full examination. Early, reliable examination findings clarify diagnosis and improve treatment times. The DeyeCOM sign has been described as a predictor of ischemic stroke.

View Article and Find Full Text PDF

Neurofibromatosis type 1 (NF1) is associated with systemic vascular disease, and it can also affect intracranial vasculature in a small percentage of patients. Very rarely, NF1 may co-present with hypoplasia of the internal carotid artery (ICA). Prior reports have documented NF1 with bilateral optic gliomas and a unilateral hypoplastic internal carotid artery; however, we report a case with the aforementioned findings in addition to a right-sided lentiform mass.

View Article and Find Full Text PDF

Objectives: The objective of the study is to assess the accuracy of final diagnosis in telestroke-guided tissue plasminogen activator (rt-PA) patients compared with bedside evaluation using computed tomography (CT) or magnetic resonance imaging (MRI) as a surrogate for final stroke diagnosis. The overall goal was to determine if telestroke had similar diagnostic accuracy as bedside evaluations in diagnosing rt-PA-treated patients.

Materials And Methods: We analyzed all acute stroke code calls who received intravenous rt-PA at our center from October 2013 to June 2015.

View Article and Find Full Text PDF

Background: Head computed tomography (CT) is critical for stroke code evaluations and often happens prior to completion of the neurological exam. Eye deviation on neuroimaging (DeyeCOM sign) has utility for predicting stroke diagnosis and correlates with National Institutes of Health Stroke Scale (NIHSS) gaze score. We further assessed the utility of the DeyeCOM sign, without complex caliper-based eye deviation calculations, but simply with a visual determination method.

View Article and Find Full Text PDF

Aim: To explore the emotion of feeling cared for in the workplace.

Background: The emotion of feeling cared for drives health-promoting behaviours. Feeling cared for is the end-product of caring, affecting practice, environment and outcomes.

View Article and Find Full Text PDF

Recent successful endovascular stroke trials have provided unequivocal support for these therapies in selected patients with large-vessel occlusive acute ischemic stroke. In this piece, we briefly review these trials and their utilization of advanced neuroimaging techniques that played a pivotal role in their success through targeted patient selection. In this context, the unique challenges and opportunity for advancement in current stroke networks' routine delivery of care created by these trials are discussed and recommendations to change current national stroke system guidelines are proposed.

View Article and Find Full Text PDF

Background: Rapid diagnosis in stroke is critical. Computed tomography is often performed initially, even before a neurologic examination. Gaze deviation has been correlated with stroke diagnosis in some cohorts.

View Article and Find Full Text PDF

Stroke subtypes have been reported to differ by race and ethnic subgroups and have not been adequately explained. We aim to evaluate if the prevalence of vascular risk factors accounts for differences observed in stroke subtypes by race/ethnicity. Patients with acute stroke were prospectively enrolled in the Miami Stroke Registry.

View Article and Find Full Text PDF

Contrast neurotoxicity (CN) following exposure to iodinated contrast is uncommon, and usually presents as cortical blindness due to bilateral occipital lobe involvement. Unilateral cortical dysfunction due to CN could mimic an acute stroke and has been rarely described. We report the case of an 89-year-old female who developed a transient dense/complete left homonymous-hemianopsia and left-sided tactile extinction after undergoing a right internal carotid (ICA) artery rotational angiogram with a standard high-volume iodinated contrast injection for 3D visualization a 6×4-mm right posterior communicating artery aneurysm with a fetal posterior cerebral artery (PCA) incorporated in the neck.

View Article and Find Full Text PDF