Mai N. Nguyen-Huynh, MD, MAS

People

Kaiser Permanente Division of Research
2000 Broadway
Oakland, CA 94612

(510) 891-3502 (phone)
mai.n.nguyen-huynh@kp.org
Kaiser Permanente Researcher Profiles

Mai N. Nguyen-Huynh, MD MAS, is a board certified vascular neurologist. She is a research scientist at the Kaiser Permanente Northern California Division of Research. She is also the Kaiser Permanente Northern California Regional Medical Director for Primary Stroke and Chief of Neurology for Diablo Service Area. Her research interests include stroke and transient ischemic attack epidemiology with a focus on acute management, large artery atherosclerotic disease, and racial-ethnic variation in stroke risks and outcomes. She is particularly interested in the implementation of evidence-based guidelines into clinical practice.

Current Position(s):

Research Scientist II, Division of Research, Kaiser Permanente Northern California
Chief of Neurology, Kaiser Permanente Diablo Service Area
Regional Medical Director for Primary Stroke, Kaiser Permanente Northern California

Section Affiliations:

Primary Research Interests:

Stroke and transient ischemic attack epidemiology
Acute management and outcomes of transient ischemic attack
Large artery atherosclerotic disease
Racial/ethnic variation in stroke risks and outcomes
Cardiovascular Research Network (CVRN)

Related Website(s):

Bring It Down Study

Studies

Long-Term Observational Extension of Participants in the CREST-2 Randomized Clinical Trial (C2LOE)

CREST-2 is a multicenter randomized trial of intensive medical management with or without revascularization in patients with asymptomatic high-grade carotid stenosis.This study is a long-term observational extension of participants in the CREST-2 randomized clinical trial (C2LOE) to describe the comparative treatment efficacy over a longer period of expected benefit from revascularization than can be accomplished in the parent trial alone. The study will end follow-up and report treatment differences when the last patient has been followed for 2 years.
Investigator: Nguyen-Huynh, Mai
Funder: National Institute of Neurological Disorders and Stroke

Acute Emergency Care and Outcomes for Stroke, Myocardial Infarction, and Surgery During the COVID-19 Pandemic in Kaiser Permanente Northern California: Implications for Care Delivery During COVID-19 Recovery Phase and Future Surges

The decreased trend in patients seeking care for acute stroke, acute MI, and acute surgical presentations during the COVID-19 pandemic is concerning for potential long-term morbidity, mortality, rehabilitation costs, and preventable downstream health care utilization. We aim to assess the effects of the shelter-in-place order on acute stroke, AMI, and surgical care and outcomes and downstream consequences on the health care system.
Investigator: Nguyen-Huynh, Mai
Funder: Garfield Memorial Fund

Extended Window for Thrombectomy - Have we extended our resources appropriately and effectively

Study will evaluate the performance of the RAPID software interpretation of CT perfusion (CTP) studies and determination of qualifications for endovascular therapy (EST). It will include a retrospective case review of prospectively collected data on consecutive stroke patients seen during the extended window for EST and screened with CTP in 2019 and 2020. It will also determine the rate of EST among those screened for the extended window and the rate of favorable 90-day functional outcome (defined as mRS 0-2) among those treated with EST. It will include a retrospective cohort study of prospectively collected data on consecutive Kaiser Permanente patients screened during the EW by telestroke neurologists in the Stroke EXPRESS program and who underwent EST.
Investigator: Nguyen-Huynh, Mai
Funder:

Nor-Cal-CSC for Northern California Regional Coordinating Center

The Northern California Regional Coordinating Stroke Center (NorCal-CSC) is a joint effort between U.C. San Francisco and selected medical center(s) within Kaiser Permanente as part of the National Institute of Neurological Disorders and Stroke (NINDS) Stroke Trials Network. This project has two aims. First, NorCal-CSC will become a resource to any network principal investigator to plan, initiate, and complete a clinical trial in the neurosciences. Second, NorCal-CSC will provide training opportunities to medical students, residents, fellows, and faculty within the network to plan and conduct clinical trials.
Investigator: Nguyen-Huynh, Mai
Funder: National Institute of Neurological Disorders and Stroke

How Fast is Fast Enough? Assessing Door-to-Needle Times and Outcomes of Stroke Patients Receiving Acute Thrombolysis Therapy Under the Kaiser Permanente Northern California Stroke EXPRESS Program

With stroke treatment, there is a general belief that "time is brain." However, there has been no published data examining specifically the association between door-to-needle times for acute treatment with intravenous alteplase in stroke patients and 90-day outcomes. In 2016, the Kaiser Permanente Northern California Stroke EXPRESS program rolled out at all 21 primary stroke centers with significant improvement in door-to-needle times. This study has two major aims: 1) to determine if there is an association between door-to-needle times and mortality at discharge and at 90-day post-treatment in patients who receive acute thrombolysis treatment with intravenous alteplase at Kaiser Permanente Northern California, and 2) to determine if there is an association between door-to-needle times and 90-day favorable functional outcome (defined as mRS 0-2) in patients who receive acute thrombolysis treatment with intravenous alteplase at Kaiser Permanente Northern California.
Investigator: Nguyen-Huynh, Mai
Funder: The Permanente Medical Group

Predicting Readmission After Stroke Study (PRESS)

Hospital readmissions are a tremendous burden on patients, their families, and the health care system. In 2008, the Centers for Medicare and Medicaid Services began publicly reporting hospital-level, risk-standardized, 30-day readmission and mortality rates for acute myocardial infarction and heart failure. Stroke survivors also have high risk of new illness, worsened known diseases, functional decline, and a high death rate. Readmission rates of 20 to 27 percent within one year have been reported. A systematic review of predictors of hospital readmission after stroke yielded no risk-standardized models for comparing hospital readmission performance or predicting readmission risk after stroke. This project aims to create a risk-adjusted predictive model for re-hospitalization after ischemic stroke using retrospectively and prospectively collected patient-level and hospital-level data, and to validate the model retrospectively and prospectively.
Investigator: Nguyen-Huynh, Mai
Funder: National Institute of Neurological Disorders and Stroke

A Randomized, Double-Blind, Multinational Study to Prevent Major Vascular Events with Ticagrelor Compared to Aspirin in Patients with Acute Ischemic Stroke

The primary objective of the trial is to compare the effect of 90-day treatment with ticagrelor (180 mg [two 90 mg tablets] loading dose on Day 1 followed by 90 mg twice daily maintenance dose for the remainder of the study) vs acetylsalicylic acid (ASA)-aspirin (300 mg [three 100 mg tablets] loading dose on Day 1 followed by 100 mg once daily maintenance dose for the remainder of the study) for the prevention of major vascular events (composite of stroke, myocardial infarction, and death) in patients with acute ischemic stroke or transient ischemic attack.
Investigator: Nguyen-Huynh, Mai
Funder: AstraZeneca PLC

Carotid Revascularization and Medical Management for Asymptomatic Carotid Stenosis Trial (CREST-2)

Carotid revascularization for primary prevention of stroke (CREST-2) is two independent multi-center, randomized controlled trials of carotid revascularization and intensive medical management versus medical management alone in patients with asymptomatic high-grade carotid stenosis. One trial will randomize patients in a 1-to-1 ratio to endarterectomy versus no endarterectomy, and another will randomize patients in a 1-to-1 ratio to carotid stenting with embolic protection versus no stenting. Medical management will be uniform for all randomized treatment groups and will be centrally directed. The purpose of this trial is to determine the best way to prevent strokes in people who have a high amount of blockage of their carotid artery but no stroke symptoms related to that blockage.
Investigator: Avins, Andrew; Chang, Robert; Nguyen-Huynh, Mai
Funder: National Institute of Neurological Disorders and Stroke

NINDS Stroke Trials Network Northern California Regional Coordinating Stroke Center

The primary goal of the NINDS Stroke Trials Network is to maximize efficiencies to develop, promote and conduct high-quality, multi-site clinical trials focused on key interventions in stroke prevention, treatment, and recovery with the objective to have a balanced portfolio between all three approaches. The aims of the Northern California Regional Coordinating Stroke Center are to: 1) Become a resource to any network PI to plan, initiate and complete a clinical trial in the neurosciences. This will be a joint effort between UCSF and selected medical centers within Kaiser Permanente; and 2) Provide training opportunities to medical students, residents, fellows and faculty within the network to plan and conduct clinical trials.
Investigator: Nguyen-Huynh, Mai
Funder: National Institute of Neurological Disorders and Stroke

Highlighted Publications

How accurate is CT angiography in evaluating intracranial atherosclerotic disease?

Author(s): Nguyen-Huynh MN1; Wintermark M; English J; Lam J; Vittinghoff E; Smith WS; Johnston SC;

Stroke. 2008 Apr;39(4):1184-8. doi: 10.1161/STROKEAHA.107.502906. Epub 2008 Feb 21.

Current Position(s):

Section Affiliations:

Primary Research Interests:

Related Website(s):

Studies

Long-Term Observational Extension of Participants in the CREST-2 Randomized Clinical Trial (C2LOE)

Acute Emergency Care and Outcomes for Stroke, Myocardial Infarction, and Surgery During the COVID-19 Pandemic in Kaiser Permanente Northern California: Implications for Care Delivery During COVID-19 Recovery Phase and Future Surges

Extended Window for Thrombectomy - Have we extended our resources appropriately and effectively

Nor-Cal-CSC for Northern California Regional Coordinating Center

How Fast is Fast Enough? Assessing Door-to-Needle Times and Outcomes of Stroke Patients Receiving Acute Thrombolysis Therapy Under the Kaiser Permanente Northern California Stroke EXPRESS Program

Predicting Readmission After Stroke Study (PRESS)

A Randomized, Double-Blind, Multinational Study to Prevent Major Vascular Events with Ticagrelor Compared to Aspirin in Patients with Acute Ischemic Stroke

Carotid Revascularization and Medical Management for Asymptomatic Carotid Stenosis Trial (CREST-2)

NINDS Stroke Trials Network Northern California Regional Coordinating Stroke Center

Highlighted Publications

How accurate is CT angiography in evaluating intracranial atherosclerotic disease?

Publications

Reply to M.S. Ewer et al

Ischemic Stroke in Patients With Asymptomatic Severe Carotid Stenosis Without Surgical Intervention-Reply

Natural History of Asymptomatic Moderate Carotid Artery Stenosis in a Large Community-Based Cohort

Incidence of Ischemic Stroke in Patients With Asymptomatic Severe Carotid Stenosis Without Surgical Intervention

Risk of Cardiometabolic Risk Factors in Women With and Without a History of Breast Cancer: The Pathways Heart Study

Risk of Cardiovascular Disease in Women With and Without Breast Cancer: The Pathways Heart Study

Effect of Lifestyle Coaching or Enhanced Pharmacotherapy on Blood Pressure Control Among Black Adults With Persistent Uncontrolled Hypertension: A Cluster Randomized Clinical Trial

Outcome prediction in large vessel occlusion ischemic stroke with or without endovascular stroke treatment: THRIVE-EVT

Early Pregnancy Blood Pressure Patterns Identify Risk of Hypertensive Disorders of Pregnancy Among Racial and Ethnic Groups

Establishing a Carotid Artery Stenosis Disease Cohort for Comparative Effectiveness Research Using Natural Language Processing

Changes in Patterns of Hospital Visits for Acute Myocardial Infarction or Ischemic Stroke During COVID-19 Surges

Potential accuracy of prehospital NIHSS-based triage for selection of candidates for acute endovascular stroke therapy

Blood Pressure Levels in Young Adulthood and Midlife Stroke Incidence in a Diverse Cohort

Long-term Stroke Risk with Carotid Endarterectomy in Patients with Severe Carotid Stenosis

Response by Flint et al to Letter Regarding Article, "Risk of Distal Embolization From tPA (Tissue-Type Plasminogen Activator) Administration Prior to Endovascular Stroke Treatment"

Validation Study of Kaiser Permanente Bedside Dysphagia Screening Tool in Acute Stroke Patients

Interventions Targeting Racial/Ethnic Disparities in Stroke Prevention and Treatment

Acute Stroke Presentation, Care, and Outcomes in Community Hospitals in Northern California During the COVID-19 Pandemic

Risk of Distal Embolization From tPA (Tissue-Type Plasminogen Activator) Administration Prior to Endovascular Stroke Treatment

Development of an algorithm to detect methotrexate wrong frequency error using computerized health care data

Shake Rattle & Roll - Design and rationale for a pragmatic trial to improve blood pressure control among blacks with persistent hypertension

Comparative Trends in Heart Disease, Stroke, and All-Cause Mortality in the United States and a Large Integrated Healthcare Delivery System

Novel Telestroke Program Improves Thrombolysis for Acute Stroke Across 21 Hospitals of an Integrated Healthcare System

Race-ethnicity on blood pressure control after ischemic stroke: a prospective cohort study

Recent Trends in Cardiovascular Mortality in the United States and Public Health Goals

Clopidogrel with aspirin in acute minor stroke or transient ischemic attack

Inpatient statin use predicts improved ischemic stroke discharge disposition

Validation of the Stroke Prognostic Instrument-II in a Large, Modern, Community-Based Cohort of Ischemic Stroke Survivors

How accurate is CT angiography in evaluating intracranial atherosclerotic disease?

Validation and refinement of scores to predict very early stroke risk after transient ischaemic attack

National Stroke Association guidelines for the management of transient ischemic attacks