National Healthcare Quality and Disparities Report
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Search All Research Studies
AHRQ Research Studies Date
Topics
- Adverse Drug Events (ADE) (1)
- Adverse Events (3)
- (-) Blood Clots (13)
- Blood Thinners (4)
- Cardiovascular Conditions (2)
- Comparative Effectiveness (1)
- Emergency Department (3)
- Evidence-Based Practice (2)
- Healthcare-Associated Infections (HAIs) (1)
- Heart Disease and Health (2)
- Hospitalization (1)
- Hospitals (2)
- Imaging (1)
- Inpatient Care (1)
- Medication (4)
- Outcomes (1)
- Patient-Centered Outcomes Research (2)
- Patient Adherence/Compliance (1)
- Patient Safety (2)
- Pneumonia (1)
- Prevention (4)
- Quality Indicators (QIs) (1)
- Quality Measures (1)
- Respiratory Conditions (3)
- Risk (5)
- Stroke (1)
- Surgery (3)
- Urinary Tract Infection (UTI) (1)
AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
Results
1 to 13 of 13 Research Studies DisplayedPannucci CJ, Fleming KI, Varghese TK
Low anti-factor Xa level predicts 90-day symptomatic venous thromboembolism in surgical patients receiving enoxaparin prophylaxis: a pooled analysis of eight clinical trials.
This study examined whether low anti-factor Xa (aFXa) level predicts 90-day symptomatic venous thromboembolism (VTE) in surgical patients receiving enoxaparin prophylaxis. The authors conducted a pooled analysis of 8 clinical trials from a single institution over a 4-year period. Among 985 patients, 2.3% had symptomatic 90-day VTE, 4.2% had 90-day clinically relevant bleeding, and 2.1% had major bleeding. Patients with initial low aFXa were significantly more likely to have 90-day VTE than patients with adequate or high xFXa (4.2% vs 1.3%). This relationship was significant for patients who received enoxaparin twice daily as opposed to once a day. No association was seen between high xFXa and 90-day clinically relevant bleeding or major bleeding.
AHRQ-funded; HS024326.
Citation: Pannucci CJ, Fleming KI, Varghese TK .
Low anti-factor Xa level predicts 90-day symptomatic venous thromboembolism in surgical patients receiving enoxaparin prophylaxis: a pooled analysis of eight clinical trials.
Ann Surg 2022 Dec 1;276(6):e682-e90. doi: 10.1097/sla.0000000000004589..
Keywords: Blood Thinners, Surgery, Medication, Blood Clots
Weekes AJ, Raper JD, Thomas AM
Electrocardiographic findings associated with early clinical deterioration in acute pulmonary embolism.
Investigators sought to determine associations of early ECG patterns with clinical deterioration (CD) within 5 days and with RV abnormality (abnlRV) by echocardiography in PE. They found that supraventricular tachycardia was an independent predictor of CD, while T-wave inversion, incomplete right bundle branch block, ST-segment elevation aVR, sinus tachycardia, and S1-Q3-T3 were independent predictors of abnlRV. They suggested that finding one or more of these ECG patterns may increase considerations for performance of echocardiography to look for RV abnormalities and, if present, inform concerns for early clinical deterioration.
AHRQ-funded; HS025979.
Citation: Weekes AJ, Raper JD, Thomas AM .
Electrocardiographic findings associated with early clinical deterioration in acute pulmonary embolism.
Acad Emerg Med 2022 Oct;29(10):1185-96. doi: 10.1111/acem.14554..
Keywords: Respiratory Conditions, Blood Clots
Lee PT, Krecko LK, Savage S
Which hospital-acquired conditions matter the most in trauma? An evidence-based approach for prioritizing trauma program improvement.
The purpose of this study was to quantify and compare the impacts of six different hospital-acquired conditions (HACs) on early clinical outcomes and resource utilization in hospitalized trauma patients. The researchers included 529,856 adult patients from the 2013 to 2016 American College of Surgeons Trauma Quality Improvement Program Participant Use Data Files with 5 days or longer of hospitalization and had an Injury Severity Score of 9 or higher. The study found the incidences of HACs were: pneumonia, 5.2%; urinary tract infection, 3.4%; venous thromboembolism, 3.3%; surgical site infection, 1.3%; pressure ulcer, 1.3%; and central line-associated blood stream infection, 0.2%. The HAC of pneumonia demonstrated the largest association with in-hospital outcomes and resource utilization. The researchers reported that prevention of pneumonia within the study group would have resulted in estimated reductions of: 22.1% for end organ dysfunction, 8.7% for prolonged hospitalization, 7.8% for mortality, 7.1% for prolonged intensive care unit stay, and 6.8% for need for mechanical ventilation. The researchers concluded that pneumonia prevention should be a priority activity in program improvement efforts.
AHRQ-funded; HS025224.
Citation: Lee PT, Krecko LK, Savage S .
Which hospital-acquired conditions matter the most in trauma? An evidence-based approach for prioritizing trauma program improvement.
J Trauma Acute Care Surg 2022 Oct 1;93(4):446-52. doi: 10.1097/ta.0000000000003645..
Keywords: Healthcare-Associated Infections (HAIs), Hospitals, Pneumonia, Urinary Tract Infection (UTI), Blood Clots
Raper JD, Thomas AM, Lupez K
Can right ventricular assessments improve triaging of low risk pulmonary embolism?
Researchers sought to determine if right ventricle (RV) assessment variables add prognostic accuracy for 5-day clinical deterioration in patients classified low risk by the Simplified Pulmonary Embolism Severity Index and to determine the prognostic importance of RV assessments compared to other variables and to each other. They found that a pulmonary embolism triaging strategy with RV imaging assessments had superior prognostic performance at classifying low risk for 5-day clinical deterioration versus one without.
AHRQ-funded; HS025979.
Citation: Raper JD, Thomas AM, Lupez K .
Can right ventricular assessments improve triaging of low risk pulmonary embolism?
Acad Emerg Med 2022 Jul;29(7):835-50. doi: 10.1111/acem.14484..
Keywords: Respiratory Conditions, Blood Clots, Risk
Rothberg MB, Hamilton AC, Greene MT
Derivation and validation of a risk factor model to identify medical inpatients at risk for venous thromboembolism.
This study’s objective was to compare multiple risk assessment models for hospitalized patients at high risk for venous thromboembolism (VTE). The authors developed a derivation cohort using 6 years of data from 12 hospitals to identify risk factors associated with developing VTE within 14 days of admission. The cohort included 155,026 patients with a 14-day VTE rate of 0.68%. The final multivariable model contained 13 risk factors and good calibration, and performance was evaluated using the C-statistic. The temporal validation cohort had 53,210 patients with a VTE rate of 0.64% and the external cohort had 23,413 patients and a rate of 0.49%. The Cleveland Clinic Model (CCM) outperformed both the Padua and IMPROVE models in the temporal cohort. In the external cohort the CCM C-statistic was similar to Padua and outperformed IMPROVE.
AHRQ-funded; HS022883.
Citation: Rothberg MB, Hamilton AC, Greene MT .
Derivation and validation of a risk factor model to identify medical inpatients at risk for venous thromboembolism.
Thromb Haemost 2022 Jul;122(7):1231-38. doi: 10.1055/a-1698-6506..
Keywords: Inpatient Care, Risk, Blood Clots
Zhang NJ, Rameau P, Julemis M
Automated pulmonary embolism risk assessment using the Wells criteria: validation study.
The authors sought to create an automated process to calculate the Wells score for pulmonary embolism for emergency department patients, which might reduce unnecessary computed tomography pulmonary angiography (CTPA) testing. They designed the process using electronic health records data elements, including free-text fields, and calculated Wells scores for a sample of adult emergency department visits that resulted in a CTPA study for pulmonary embolism at two tertiary care hospitals in New York. After validation, the authors concluded that the development of the automated process to classify risk for pulmonary embolism in emergency department visits was successful.
AHRQ-funded; HS026196.
Citation: Zhang NJ, Rameau P, Julemis M .
Automated pulmonary embolism risk assessment using the Wells criteria: validation study.
JMIR Form Res 2022 Feb 28;6(2):e32230. doi: 10.2196/32230.
Keywords: Blood Clots, Respiratory Conditions, Risk, Emergency Department
Repplinger MD, Bracken RL, Patterson BW
Downstream imaging utilization after mr angiography versus CT angiography for the initial evaluation of pulmonary embolism.
This single-center, retrospective, observational study examined the use of chest CT or MR for ED patients with MR angiography (MRA) negative for PE during April 2008 to March 2013. The investigators concluded that when comparing patients initially undergoing MRA versus CTA for the evaluation of PE, there was no difference in downstream chest CT or MR use at 1 year.
AHRQ-funded; HS024558; HS024342.
Citation: Repplinger MD, Bracken RL, Patterson BW .
Downstream imaging utilization after mr angiography versus CT angiography for the initial evaluation of pulmonary embolism.
J Am Coll Radiol 2018 Dec;15(12):1692-97. doi: 10.1016/j.jacr.2018.04.017..
Keywords: Blood Clots, Emergency Department, Imaging
Borre ED, Goode A, Raitz G
Predicting thromboembolic and bleeding event risk in patients with non-valvular atrial fibrillation: a systematic review.
This systematic review compared the strength of tools to predict stroke and bleeding risk in patients with atrial fibrillation (AF) taking blood thinners. Sixty-one studies were found to predict thromboembolic risk and 38 to predict bleeding risk.
AHRQ-funded; 290201500004I.
Citation: Borre ED, Goode A, Raitz G .
Predicting thromboembolic and bleeding event risk in patients with non-valvular atrial fibrillation: a systematic review.
Thromb Haemost 2018 Dec;118(12):2171-87. doi: 10.1055/s-0038-1675400..
Keywords: Heart Disease and Health, Cardiovascular Conditions, Stroke, Blood Clots, Blood Thinners, Medication, Adverse Drug Events (ADE), Adverse Events, Risk, Patient-Centered Outcomes Research, Evidence-Based Practice
Murphy PB, Vogt KN, Lau BD
Venous thromboembolism prevention in emergency general surgery: a review.
Operatively and nonoperatively treated emergency general surgery patients are at a comparatively high risk of venous thromboembolism (VTE). This review found that, despite gaps in existing literature with respect to this increasing patient population, successful best practices can be applied. Best practices include assessment of VTE risk, optimal prophylaxis, and physician, nurse, and patient education regarding the use of mechanical and pharmacologic VTE prophylaxis and institutional policies.
AHRQ-funded; HS024547.
Citation: Murphy PB, Vogt KN, Lau BD .
Venous thromboembolism prevention in emergency general surgery: a review.
JAMA Surg 2018 May;153(5):479-86. doi: 10.1001/jamasurg.2018.0015..
Keywords: Blood Clots, Surgery, Emergency Department, Adverse Events, Prevention, Patient Safety
Wang SV, Huybrechts KF, Fischer MA
Generalized boosted modeling to identify subgroups where effect of dabigatran versus warfarin may differ: an observational cohort study of patients with atrial fibrillation.
The purpose of this study was to explore generalized boosted modeling (GBM) as a method for identifying subgroups with greater benefit or harm with dabigatran versus warfarin for treatment of atrial fibrillation. The investigators concluded that dabigatran's superiority to warfarin at prevention of thromboembolism may be greater in secondary than primary prevention. They indicated that in practice, secondary prevention patients are more often treated with warfarin.
AHRQ-funded; HS022193.
Citation: Wang SV, Huybrechts KF, Fischer MA .
Generalized boosted modeling to identify subgroups where effect of dabigatran versus warfarin may differ: an observational cohort study of patients with atrial fibrillation.
Pharmacoepidemiol Drug Saf 2018 Apr;27(4):383-90. doi: 10.1002/pds.4395..
Keywords: Blood Clots, Blood Thinners, Cardiovascular Conditions, Comparative Effectiveness, Evidence-Based Practice, Heart Disease and Health, Medication, Outcomes, Patient-Centered Outcomes Research, Prevention
Lau BD, Streiff MB, Pronovost PJ
Venous thromboembolism quality measures fail to accurately measure quality.
This study reviewed a large number of international quality measures for venous thromboembolism (VTE) prevention. Researchers discovered that none of them accurately characterize VTE prevention methods or outcomes in hospitalized patients. They describe an ideal, defect-free VTE prevention process.
AHRQ-funded; HS024547.
Citation: Lau BD, Streiff MB, Pronovost PJ .
Venous thromboembolism quality measures fail to accurately measure quality.
Circulation 2018 Mar 20;137(12):1278-84. doi: 10.1161/circulationaha.116.026897..
Keywords: Blood Clots, Hospitalization, Prevention, Quality Indicators (QIs), Quality Measures
Lau BD, Streiff MB, Kraus PS
Missed doses of venous thromboembolism (VTE) prophylaxis at community hospitals: cause for alarm.
This study examined the rate of missed doses of venous thromboembolism (VTE) prophylaxis at community hospitals in the Washington, DC and greater Baltimore metropolitan areas. This retrospective study included four hospitals within the Johns Hopkins Health System. Non-administration of VTE prophylaxis was found 10.9% to 15.0% of the time among the three community hospitals. About 43.6% of patients missed at least one dose in all four hospitals. The investigators weren’t able to categorize patients by specialty, however it has been reported that more doses are missed with medically ill patients than other hospitalized patients.
AHRQ-funded; HS024547.
Citation: Lau BD, Streiff MB, Kraus PS .
Missed doses of venous thromboembolism (VTE) prophylaxis at community hospitals: cause for alarm.
J Gen Intern Med 2018 Jan;33(1):19-20. doi: 10.1007/s11606-017-4203-y..
Keywords: Blood Clots, Prevention, Blood Thinners, Patient Adherence/Compliance, Medication, Hospitals
Cramer JD, Dilger AE, Schneider A
Risk of venous thromboembolism among otolaryngology patients vs general surgery and plastic surgery patients.
Researchers examined the rate of venous thromboembolism (VTE) for various otolaryngology procedures compared with an established average-risk field and low-risk field. They identified a high-risk group for VTE in otolaryngology; however, they found that most patients undergoing otolaryngology procedures are at low risk of VTE, indicating that guidelines for a low-risk population could be adapted to otolaryngology. The authors concluded that patients undergoing high-risk otolaryngology procedures should be considered as candidates for more aggressive VTE prophylaxis.
AHRQ-funded; HS023011.
Citation: Cramer JD, Dilger AE, Schneider A .
Risk of venous thromboembolism among otolaryngology patients vs general surgery and plastic surgery patients.
JAMA Otolaryngol Head Neck Surg 2018 Jan;144(1):9-17. doi: 10.1001/jamaoto.2017.1768..
Keywords: Surgery, Blood Clots, Risk, Adverse Events, Patient Safety