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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 8 of 8 Research Studies DisplayedPatel PB, Marcaccio CL, Swerdlow NJ
Thoracoabdominal aortic aneurysm life-altering events following endovascular aortic repair in the Vascular Quality Initiative.
This study’s objective was to examine the rates of postoperative mortality and morbidity stratified by type of endovascular aortic aneurysm repair (EVAR). The authors identified all patients who underwent EVAR in the Vascular Quality Initiative registry from January 2011 to May 2022. Patients were then stratified by repair type: infrarenal EVAR, complex EVAR, thoracic endovascular aortic repair (TEVAR), extent I to III thoracoabdominal aortic aneurysm (TAAA) repair, or aortic arch repair. Primary outcomes across the different treatment groups was postoperative thoracoabdominal aortic aneurysm life-altering events (TALE). They identified a total of 52,592 EVARs, 3768 complex EVARs, 3899 TEVARs, 1139 extent I to III TAAA repairs, and 479 arch repairs, with TALE observed in 1.2% of EVARs, 4.8% of complex EVARs, 6.0% of TEVARs, 10% of extent I to III TAAA repairs, and 14% of arch repairs. More proximal landing zone was associated with higher odds of TALE after complex EVAR, TEVAR, and extent I to III TAAA repair. Aortic diameter >65 mm was associated with higher odds of TALE after infrarenal EVAR, complex EVAR, TEVAR, and arch repair. The use of parallel grafting technique (chimney/snorkel/periscope) during extent I to III TAAA repair was also associated with higher odds of TALE. Preoperative chronic kidney disease was also associated with higher odds of TALE after infrarenal EVAR, complex EVAR, TEVAR, and extent I to III TAAA repair.
AHRQ-funded; HS027285.
Citation: Patel PB, Marcaccio CL, Swerdlow NJ .
Thoracoabdominal aortic aneurysm life-altering events following endovascular aortic repair in the Vascular Quality Initiative.
J Vasc Surg 2023 Aug; 78(2):269-77.e3. doi: 10.1016/j.jvs.2023.03.499..
Keywords: Surgery, Stroke, Cardiovascular Conditions
De Roo AC, Ha J, Regenbogen SE
Impact of Medicare eligibility on informal caregiving for surgery and stroke.
The purpose of this study was to assess whether the intensity of family and friend care changes after older individuals enroll in Medicare at 65. Researchers used Health and Retirement Study survey data covering a 20-year period to compare informal care received by patients who had been hospitalized for stroke, heart surgery, or joint surgery, and who were stratified into propensity-weighted pre- and post-Medicare eligibility cohorts. Their results showed that onset of Medicare eligibility was associated with a substantial decrease in family and friend caregiving use received by stroke patients, but not in the other acute care cohorts. They concluded that this effect of Medicare coverage on informal caregiving had implications for patient function and caregiver burden, and should be considered in episode-based reimbursement models that alter professional rehabilitative care intensity.
AHRQ-funded; HS000053.
Citation: De Roo AC, Ha J, Regenbogen SE .
Impact of Medicare eligibility on informal caregiving for surgery and stroke.
Health Serv Res 2023 Feb; 58(1):128-39. doi: 10.1111/1475-6773.14019..
Keywords: Medicare, Caregiving, Surgery, Stroke, Cardiovascular Conditions
Anjorin AC, Marcaccio CL, Rastogi V
Statin therapy is associated with improved perioperative outcomes and long-term mortality following carotid revascularization in the Vascular Quality Initiative.
This study evaluated the outcomes of carotid artery stenosis (CAS) patients using statin therapy before undergoing carotid revascularization in the Vascular Quality Initiative registry. The authors identified all patients who underwent carotid endarterectomy (CEA), transfemoral carotid artery stenting (tfCAS), or transcarotid artery revascularization (TCAR) in the Vascular Quality Initiative registry from January 2016 to September 2021. Compared with statin use, no statin use was associated with a higher risk of in-hospital stroke or death and 5-year mortality among CEA and tfCAS patients, although there was no significant difference in outcomes among TCAR patients.
AHRQ-funded; HS027285.
Citation: Anjorin AC, Marcaccio CL, Rastogi V .
Statin therapy is associated with improved perioperative outcomes and long-term mortality following carotid revascularization in the Vascular Quality Initiative.
J Vasc Surg 2023 Jan;77(1):158-69.e8. doi: 10.1016/j.jvs.2022.08.019..
Keywords: Cardiovascular Conditions, Medication, Stroke, Surgery, Outcomes
Solomon Y, Rastogi V, Marcaccio CL
Outcomes after transcarotid artery revascularization stratified by preprocedural symptom status.
In this study, researchers examined contemporary perioperative outcomes in patients who underwent transcarotid artery revascularization (TCAR) stratified by specific preprocedural symptom status. Using data from the Vascular Quality Initiative, they found that, after TCAR, compared with asymptomatic status, a recent stroke and a recent hemispheric TIA were associated with higher stroke/death rates, whereas a recent ocular TIA was associated with similar stroke/death rates. In addition, a formerly symptomatic status was associated with higher stroke/death rates compared with an asymptomatic status. The researchers concluded that their findings suggested that classifying patients undergoing TCAR as symptomatic versus asymptomatic may be an oversimplification and that patients' specific preoperative neurologic symptoms should instead be used in risk assessment and outcome reporting for TCAR.
AHRQ-funded; HS027285.
Citation: Solomon Y, Rastogi V, Marcaccio CL .
Outcomes after transcarotid artery revascularization stratified by preprocedural symptom status.
J Vasc Surg 2022 Nov;76(5):1307-15.e1. doi: 10.1016/j.jvs.2022.05.024..
Keywords: Cardiovascular Conditions, Surgery, Stroke, Outcomes
Marcaccio CL, Patel PB, Liang P
Efficacy and safety of perioperative dual antiplatelet therapy with ticagrelor versus clopidogrel in carotid artery stenting.
This study’s objective was to compare the efficacy and safety of perioperative dual antiplatelet therapy with aspirin/ticagrelor vs aspirin/clopidogrel in patients undergoing transfemoral carotid artery stenting (tfCAS) or transcarotid artery revascularization (TCAR). The authors identified all patients who underwent tfCAS or TCAR in the Vascular Quality Initiative registry from January 2016 to March 2021. They stratified patients by procedure and assessed outcomes using 1:3 propensity score-matched cohorts of patients who received perioperative aspirin/ticagrelor vs aspirin/clopidogrel. Among the cohort of 17,731 tfCAS patients, 593 (3.3%) received aspirin/ticagrelor and 11,404 (64%) received aspirin/clopidogrel. For the 2065 matched patients, no significant differences were found in the composite endpoint of stroke/death (aspirin/ticagrelor, 4.1%; vs aspirin/clopidogrel, 2.6%) or in the individual endpoints of stroke (2.9% vs 1.8%) or death (1.7% vs 1.1%). However, aspirin/ticagrelor was associated with a higher risk of bleeding (5.8% vs 2.8%). In a subgroup analysis of 297 tfCAS patients (14%) who received intraoperative protamine, no differences remained in stroke/death (1.5% vs 3.9%), and there was no longer a difference in bleeding (3.0% vs 2.6%). Among 17,946 TCAR patients, 453 (2.5%) received aspirin/ticagrelor and 13,696 (76%) received aspirin/clopidogrel. With the 1618 matched patients, no differences were found in stroke/death (0.7% vs 1.4%), stroke (0.2% vs 1.2%), death (0.5% vs 0.2%), or bleeding (1.2% vs 1.6%). For the 1429 TCAR patients (88%) who received protamine, no differences were found in stroke/death (0.8% vs 1.2%) or bleeding (0.6% vs 1.4%).
AHRQ-funded; HS027285.
Citation: Marcaccio CL, Patel PB, Liang P .
Efficacy and safety of perioperative dual antiplatelet therapy with ticagrelor versus clopidogrel in carotid artery stenting.
J Vasc Surg 2022 Apr; 75(4):1293-303.e8. doi: 10.1016/j.jvs.2021.09.045..
Keywords: Cardiovascular Conditions, Medication, Stroke, Adverse Drug Events (ADE), Adverse Events, Patient Safety, Surgery
Mallela DP, Canner JK, Zarkowsky DS
Association between race and perioperative outcomes after carotid endarterectomy for asymptomatic carotid artery stenosis in NSQIP.
This study investigated the association of race on carotid endarterectomy (CEA) outcomes. Perioperative outcomes (at 30 days) were compared for Black vs. White patients adjusting for age/sex, comorbidities and disease characteristics. Out of 16,764 patients from the ACS-NSQIP targeted vascular database (2011-2019), 95.2% were White and 4.8% were Black. Black patients were slightly younger and more frequently (79.5% vs 74.0%) had high-grade carotid artery stenosis compared to White patients. Comorbidities including hypertension, diabetes, kidney disease, congestive heart failure, and coronary artery disease were all more prevalent among Black patients. Crude perioperative stroke and stroke/death were higher for Black patients, but myocardial infarction leading to death were similar. After adjusting for baseline differences between groups, the risk of perioperative stroke and stroke/death remained significantly higher for Black patients than White patients.
AHRQ-funded; HS024547.
Citation: Mallela DP, Canner JK, Zarkowsky DS .
Association between race and perioperative outcomes after carotid endarterectomy for asymptomatic carotid artery stenosis in NSQIP.
J Am Coll Surg 2022 Jan;234(1):65-73. doi: 10.1097/xcs.0000000000000016..
Keywords: Racial and Ethnic Minorities, Surgery, Cardiovascular Conditions, Stroke, Risk, Adverse Events
Zachrison KS, Schwamm LH, Xu H
Frequency, characteristics, and outcomes of endovascular thrombectomy in patients with stroke beyond 6 hours of onset in US clinical practice.
In 2018, 2 randomized controlled trials showed the benefit of endovascular thrombectomy (EVT) in acute ischemic stroke patients treated 6 to 24 hours from last known well using imaging-guided selection. However, little is known about outcomes in contemporary nontrial settings. In this study, the investigators assessed the frequency of EVT and outcomes beyond 6 hours in the US Get With The Guidelines-Stroke clinical registry.
AHRQ-funded; HS024561.
Citation: Zachrison KS, Schwamm LH, Xu H .
Frequency, characteristics, and outcomes of endovascular thrombectomy in patients with stroke beyond 6 hours of onset in US clinical practice.
Stroke 2021 Dec;52(12):3805-14. doi: 10.1161/strokeaha.121.034069..
Keywords: Stroke, Cardiovascular Conditions, Surgery, Outcomes
Cramer JD, Patel UA, Maas MB
Is neck dissection associated with an increased risk of postoperative stroke?
The researchers investigated whether neck dissection is an independent risk factor for postoperative stroke. They found that the rate of postoperative stroke was greater with neck dissection than without it and concluded that stroke is a rare but highly morbid complication after head and neck surgery. Compared with other head and neck surgery, neck dissection in patients at risk for carotid artery stenosis is associated with an increased risk of postoperative stroke.
AHRQ-funded; HS023011.
Citation: Cramer JD, Patel UA, Maas MB .
Is neck dissection associated with an increased risk of postoperative stroke?
Otolaryngol Head Neck Surg 2017 Aug;157(2):226-32. doi: 10.1177/0194599817698414.
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Keywords: Orthopedics, Quality Improvement, Risk, Stroke, Surgery