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Salih M, Salem MM, Moore JM, Ogilvy CS. Optimal Cost-Effective Screening Strategy for Unruptured Intracranial Aneurysms in Female Smokers. Neurosurgery 2023; 92:150-158. [PMID: 36222540 DOI: 10.1227/neu.0000000000002166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/25/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The prevalence of intracranial aneurysms among female cigarette smokers was shown to be high in previous studies, yet the cost-effectiveness of screening them has never been explored. OBJECTIVE To explore the most cost-effective screening strategy for female smokers. METHODS A decision analytical study was performed with a Markov model to compare different screening strategies with no screening and to explore the most optimal screening strategy for female smokers. Input data for the model were extracted from literature. A single screening at different ages and multiple screening every 15 years, 10 years, 5 years, and 2 years were performed for female smokers in different age ranges. Deterministic and probabilistic sensitivity analyses were performed to evaluate the robustness of the model. Finally, value of information analysis was performed to investigate the value of collecting additional data. RESULTS Screening female smokers for unruptured intracranial aneurysm is cost-effective. All screening strategies yield extra quality-adjusted life years. Screening at younger age brings more health benefit at lower cost. Frequent screening strategies decrease rupture rate of aneurysms more with higher costs per quality-adjusted life year. Screening after age 70 years and frequent screening (every 2 years) after age 60 years is not optimal. Among all the parameters in the model, collecting additional data on utility of the unscreened population would be most valuable. CONCLUSION Screening female smokers for intracranial aneurysms once at younger age is most optimal. However, in clinical practice, the duration and intensity of exposure to cigarettes should be taken into consideration.
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Affiliation(s)
- Mira Salih
- Neurosurgical Service, Beth Israel Deaconess Medical Center Brain Aneurysm Institute, Harvard Medical School, Boston, Massachusetts, USA
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Genetic Determinants of Unruptured Intracranial Aneurysms in the General Population. Stroke 2015; 46:2961-4. [DOI: 10.1161/strokeaha.115.010414] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/22/2015] [Indexed: 11/16/2022]
Abstract
Background and Purpose—
Genome-wide association studies have identified single-nucleotide polymorphisms (SNPs) for intracranial aneurysms in clinical samples. In addition, SNPs have been discovered for blood pressure, one of the strongest risk factors for intracranial aneurysms. We studied the role of these genetic variants on occurrence and size of unruptured intracranial aneurysms, discovered incidentally in a general community-dwelling population.
Methods—
In 4890 asymptomatic participants from the Rotterdam Study, 120 intracranial aneurysms were identified on brain imaging and segmented for maximum diameter and volume. Genetic risk scores (GRS) were calculated for intracranial aneurysms (10 SNPs), systolic blood pressure (33 SNPs), and diastolic blood pressure (41 SNPs).
Results—
The GRS for intracranial aneurysms was not statistically significantly associated with presence of aneurysms in this population (OR, 1.16; 95% CI, 0.96–1.40;
P
=0.119), but showed a significant association with both maximum diameter (difference in log-transformed mm per SD increase of GRS, 0.10; 95% CI, 0.02–0.19;
P
=0.018) and volume (difference in log-transformed µL per SD increase of GRS, 0.21; 95% CI, 0.01–0.41;
P
=0.040) of aneurysms. GRSs for blood pressures were associated with neither presence nor size of aneurysms.
Conclusions—
Genetic variants previously identified for intracranial aneurysms in clinical studies relate to the size rather than the presence of incidentally discovered, unruptured intracranial aneurysms in the general population.
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Arnaout OM, El Ahmadieh TY, Zammar SG, El Tecle NE, Hamade YJ, Aoun RJN, Aoun SG, Rahme RJ, Eddleman CS, Barrow DL, Batjer HH, Bendok BR. Microsurgical Treatment of Previously Coiled Intracranial Aneurysms: Systematic Review of the Literature. World Neurosurg 2015; 84:246-53. [PMID: 25731797 DOI: 10.1016/j.wneu.2015.02.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 02/16/2015] [Accepted: 02/17/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To assess indications, complications, clinical outcomes, and technical nuances of microsurgical treatment of previously coiled intracranial aneurysms. METHODS A systematic review of the literature was performed using PubMed/MEDLINE and EMBASE databases from January 1990 to December 2013. English-language articles reporting on microsurgical treatment of previously coiled intracranial aneurysms were included. Articles that involved embolization materials other than coils were excluded. Data on aneurysm characteristics, indications for surgery, techniques, complications, angiographic obliteration rates, and clinical outcomes were collected. RESULTS The literature review identified 29 articles reporting on microsurgical clipping of 375 previously coiled aneurysms. Of the aneurysms, 68% were small (<10 mm). Indications for clipping included the presence of a neck remnant (48%) and new aneurysmal growth (45%). Rebleeding before clipping was reported in 6% of cases. Coil extraction was performed in 13% of cases. The median time from initial coiling to clipping was 7 months. The angiographic cure rate was 93%, with morbidity and mortality of 9.8% and 3.6%, respectively. CONCLUSIONS Microsurgical clipping of previously coiled aneurysms can result in high obliteration rates with relatively low morbidity and mortality in select cases. Considerations for microsurgical strategies include the presence of sufficient aneurysmal tissue for clip placement and the potential need for temporary occlusion or flow arrest. Coil extraction is not needed in most cases.
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Affiliation(s)
- Omar M Arnaout
- Department of Neurological Surgery, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Tarek Y El Ahmadieh
- Department of Neurological Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Samer G Zammar
- Department of Neurological Surgery, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Najib E El Tecle
- Department of Neurological Surgery, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Youssef J Hamade
- Department of Neurological Surgery, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Rami James N Aoun
- Department of Neurological Surgery, Mayo Clinic Hospital, Phoenix, Arizona, USA
| | - Salah G Aoun
- Department of Neurological Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Rudy J Rahme
- Department of Neurological Surgery, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Christopher S Eddleman
- Department of Neurological Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Daniel L Barrow
- Department of Neurological Surgery, Mayo Clinic Hospital, Phoenix, Arizona, USA; Department of Neurological Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - H Hunt Batjer
- Department of Neurological Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Bernard R Bendok
- Department of Neurological Surgery, Mayo Clinic Hospital, Phoenix, Arizona, USA.
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