The relation between aneurysm size and outcome in patients with subarachnoid hemorrhage

The balance of risks of treatment for unruptured aneurysms might change if the prognosis after rupture depends on the size of the aneurysm. In a prospective series of patients with subarachnoid hemorrhage in whom aneurysmal size was measured by CT angiography performed on admission, poor outcome occurred more often in patients with large (> or =10 mm) aneurysms (63%) than in patients with small (<10 mm) aneurysms (41%; RR = 1.5; 95% CI 1.0 to 2.2). The relative risk remained essentially the same after adjustment for age, gender, location of the aneurysm, and amount of cisternal blood.     

Patients with unruptured intracranial aneurysms at the waiting list for intervention: risk of rupture

Unruptured intracranial aneurysms are usually not managed on an emergency basis, although for patients, uncertainty and waiting can be stressful. We assessed the incidence of aneurysms rupturing during the initial period of awareness of having an aneurysm. We studied all patients visiting our service with an unruptured intracranial aneurysm between January 2000 and March 2013. For the exposure time (time between diagnosis and discussion of treatment plan, together with time on waiting list for treatment), we calculated incidence of aneurysmal rupture with corresponding 95 % confidence intervals. We compared this incidence with expected incidence (based on size and site for each aneurysm). 398 patients were included; five had aneurysmal rupture during the exposure time. The observed incidence of aneurysmal rupture during exposure time was 47/1,000 patient-years (95 % confidence interval 15–111); the expected incidence was 0.7/1,000. Our data suggest that the risk of aneurysmal rupture early after detection of unruptured aneurysms is higher than expected based on aneurysm characteristics.     

Relation between age and number of aneurysms in patients with subarachnoid haemorrhage

BACKGROUND: Because age and the presence of atherosclerosis are risk factors for the presence of aneurysms, the presence of multiple aneurysms may also increase with age. Familial preponderance is another risk factor for the presence of aneurysms. Familial subarachnoid haemorrhage (SAH) occurs at an earlier age than sporadic SAH, and a higher frequency of multiple aneurysms has been suggested in familial SAH. This may imply that the multiplicity of aneurysms is associated with younger age. We studied the relation between age and the number of aneurysms in patients with SAH. METHODS: From our database we selected patients with aneurysmal SAH admitted between 1985 and 1999. Inclusion criteria were: (1) both carotid and vertebral arteries had been visualised; (2) at least one aneurysm was found, and (3) admission within 72 h after onset of symptoms. For the 555 patients included we recorded the age, sex and number of aneurysms. The patients were categorised into patients with a single aneurysm, patients with more than one aneurysm and those with more than two aneurysms. For all categories we calculated the proportion of patients younger than the median age and the differences between these proportions, with corresponding 95% confidence intervals (CI). We also calculated relative risks (RR) of multiple aneurysms for gender and age below the median. RESULTS: 485 patients had a single aneurysm, and 70 patients had more than one aneurysm. The proportion of patients younger than the median age (51 years) with one aneurysm was 47.8%, for more than one aneurysm 61.4% (difference 13.6%; 95% CI 1.4-25.8), and for more than two aneurysms 82.6% (difference 34.8%, 95% CI 18.7-50.9). The RR of women for multiple aneurysms was 1.52 (95% CI 0.61-3.77), and that of age below the median 4.86 (95% CI 1.68-14.1). CONCLUSIONS: Patients with multiple aneurysms are younger than patients with a single aneurysm. This may suggest that atherosclerotic risk factors are less important than genetic factors in the development of multiple aneurysms.     

Natural history, epidemiology and screening of unruptured intracranial aneurysms

The prevalence of intracranial aneurysms is 2.3% (95% CI, 1.7-3.1%); most of these aneurysms are small and located in the anterior circulation. Risk factors are age, female gender, smoking, hypertension, excessive use of alcohol, having one or more affected relatives with SAH and autosomal dominant polycystic kidney disease. Most studies on risk of rupture have methodological weaknesses; an important flaw is that observed risks are recalculated to yearly risks of rupture, assuming a constant risk of growth and rupture of aneurysms. In reality, it is much more likely that aneurysms have long periods of low risk and short periods of high risk of growth and rupture. The overall risk of rupture found in follow-up studies is around 1% per year. Size is the most important risk factor for rupture, with smaller risks for smaller aneurysms. Other risk factors are the site of the aneurysm (higher risk for posterior circulation aneurysms), age, female gender, population (higher risks in Finland and Japan) and, probably also, smoking. There are no good comparisons between clipping and coiling of unruptured aneurysms. Both treatment modalities have a risk of around 6% of complications leading to death or dependence of help for activities of daily living for aneurysms smaller than 10mm. These risks increase with larger size of aneurysms. For clipping, the risk seems to increase with age, for coiling this is less apparent. The efficacy of coiling on the long term is unsettled. In deciding whether or not to treat an aneurysm, life expectancy is a pivotal factor; other important factors are the size and the site of the aneurysm. If the aneurysm is left untreated, follow-up imaging may be considered to detect growth of aneurysms, but the frequency and effectiveness of repeated imaging are unknown.     

Risk factors for multiple intracranial aneurysms

BACKGROUND AND PURPOSE: The presence of multiple intracranial aneurysms may be a sign of significant risk factors for aneurysm formation that differ from those factors that increase risk for aneurysm rupture. Only 2 studies concern independent risk factors for multiple aneurysms, and the results are in part controversial. This study was designed to identify independent risk factors for multiple intracranial aneurysms in patients with subarachnoid hemorrhage. METHODS: Of 266 patients with aneurysmal subarachnoid hemorrhage (139 men and 127 women, aged 15 to 60 years), 80 (30%) had multiple intracranial aneurysms. The prevalence of several health-related habits, previous diseases, and medications of these patients were compared by multiple logistic regression between those with single and those with multiple aneurysms. RESULTS: On the basis of multivariate statistics, only regular cigarette smoking at any time was a significant risk factor for the presence of multiple aneurysms. The odds ratio (OR) of smoking for multiple aneurysms was 2.10 (95% CI, 1.06 to 4.13) after adjustment for age and sex. After additional adjustment for hypertension, the risk was 2.06 (95% CI, 1. 04 to 4.07). Of other variables, only age (OR, 1.02 per year; 95% CI, 1.00 to 1.05; P=0.09) and female sex (OR, 1.60; 95% CI, 0.90 to 2. 85; P=0.11) showed a tendency to increase the risk for multiple aneurysms after adjustment for smoking. On the other hand, patients with hypertension had significantly (P=0.029) more aneurysms (1. 61+/-1.04) than did those without (1.37+/-0.68), although they did not more frequently have multiple aneurysms. CONCLUSIONS: Cigarette smoking and possibly also age and female sex seem to be risk factors for multiple intracranial aneurysms in patients of working age who have suffered a subarachnoid hemorrhage. Patients with hypertension seem to have more aneurysms than those without.     

The PHASES score: To treat or not to treat? Retrospective evaluation of the risk of rupture of intracranial aneurysms in patients with aneurysmal subarachnoid hemorrhage

Background and purposeThe PHASES score was formulated to predict the 5-year risk of rupture for intracranial aneurysms. We retrospectively analyzed all patients treated in our institution for aneurysmal SAH and applied the PHASES score to estimate the probable predicted risk of bleeding in this group of patients.MethodsBetween February 2015 and August 2018, all patients with aneurysmal SAH were retrospectively analyzed and the PHASES score was applied. A total of 155 patients were included with a mean age of 53.8 years, including 60 males and 95 females.ResultsOf our patients 110 (70.9%) had a PHASES score of below or equal to 5, with a hemorrhagic risk of up to 1.3% over 5 years. If we analyze the patients with a risk of below 2% this figure increases to 122 patients (78.7%). Of these 99.3% were European and 0.6% were Japanese (1 patient). In 86 patients (55.4%), the aneurysm was smaller than 5 mm and in 10 patients (6.4%) the aneurysm was located in the posterior circulation.ConclusionOf our patients 78.7% had less than a 2% 5-year rupture risk based on their PHASES score, highlighting the discrepancy of the rupture risk calculated with the PHASES score when hypothetically applied to this group of patients. In the hypothetical scenario that our patients had unruptured aneurysms, our retrospective analysis shows that the PHASES score may only provide a weak tool for clinicians to use in the decision-making process as to whether or not to treat these aneurysms.     

颅内动脉瘤破裂风险和动脉瘤形态学参数的关系

目的 探讨颅内动脉瘤破裂风险相关的动脉瘤形态学参数。方法 回顾性分析114例颅内动脉瘤（61例未破裂动脉瘤,53例破裂动脉瘤）的临床资料,采用多因素Logistic回归分析检验7个动脉瘤形态学参数[动脉瘤直径、动脉瘤高度与瘤颈宽度比值、动脉瘤高度与载瘤动脉直径比值（SR）、长宽比、入射角度、载瘤动脉角度和颈体角度）与动脉瘤破裂风险的关系。结果 动脉瘤长度越长,破裂风险越小（OR=0.470;95% CI 0.286~0.771;P=0.003）;SR越大,破裂风险越大（OR=18.998;95% CI 2.851~126.607;P=0.002）;颈体角度越大,破裂风险越大（OR=1.073;95% CI 1.023~1.125;P=0.004）。结论 SR、动脉瘤长度和颈体角度是判断颅内动脉瘤破裂风险的重要指标。     

Unruptured intracranial aneurysm and microsurgical exclusion: the need of a randomized study of surgery versus natural history

Although unruptured intracranial aneurysm (UIA) is becoming a more common finding nowadays, determining the optimal treatment strategy is difficult because the risk of rupture is poorly understood and surgery is not without its own hazards. As the mortality rate after rupture is estimated to range from 56 to 83%, the final therapeutic decision is the result of an analysis of rupture risk and the risks related to surgical exclusion, which may be determined by consideration of the risk factors. We considered the UIA to have a high risk of rupture if it was located on the vertebrobasilar arterial system (RR: 4.4; CI 95%, 2.7-6.8), between 7 and 12 mm in size (RR: 3.3; CI 95%, 1.3-8.2) or larger (RR: 17; CI 95%, 8-36.1), multilobular and had a ratio of depth to width greater than 3.4 (risk x 20). A family history of UIA would constitute a major rupture risk (two to seven times that of spontaneous UIA). Other factors related to UIA rupture include arterial hypertension (RR: 1.46; CI 95%, 1.01-2.11) and smoking (RR: 3.04; CI 95%, 1.21-7.66). After microsurgical exclusion, the morbidity and mortality rates were calculated as 9 and 1.5%, respectively. Microsurgical risk factors were age (32% > 65 years), and factors related to the UIA itself and surgery, such as size (14% > 15 mm), location, presence of atherosclerosis and difficulty of surgical clip application. The incidence of rupture after microsurgical exclusion was estimated to be 0.2% per year, and complete microsurgical exclusion was achieved in 90% of patients. A randomised study of microsurgical exclusion of UIA would offer further proof of our therapeutic hypotheses.     

Aneurysmal and clinical characteristics as risk factors for intracerebral haematoma from aneurysmal rupture

Intracerebral haematoma (ICH) occurs in one-third of patients with aneurysmal subarachnoid haemorrhage (SAH) and is associated with poor prognosis. Identification of risk factors for ICH from aneurysmal rupture may help in balancing risks of treatment of unruptured aneurysms. We assessed potential clinical and aneurysmal risk factors for ICH from aneurysmal rupture. In all 310 SAH patients admitted to our service between 2005 and 2007, we compared clinical risk factors (gender, age, smoking, hypertension, history of SAH and family history) of patients with and without an ICH. From the latest admitted, 50 patients with and 50 without ICH, we compared the location, shape and direction of blood flow of the aneurysms on CT-angiography. Relative risks (RRs) of ICH were 1.2 (95% confidence interval, CI):0.7–1.8) for males, 1.0 (95%CI:0.7–1.4) for age ≥55 year, 1.0 (95%CI:0.6–1.6) for smoking, 0.9 (95%CI:0.5–1.5) for hypertension, 0.6 (95%CI:0.1–3.8) for history of SAH and 0.5 (95%CI:0.2–1.3) for family history of SAH. RRs of ICH were 1.8 (95%CI:1.2–2.5) for MCA aneurysms, 0.5 (95%CI:0.3–1.0) for ICA aneurysms, 0.4 (95%CI:0.1–1.3) for posterior circulation aneurysms, and 0.7 (95%CI:0.3–1.3) for multilobed aneurysms. The RRs of other aneurysmal characteristics varied between 0.9 and 1.2. Patients with MCA aneurysms are at a higher risk of developing ICH. The other aneurysmal or clinical factors have no or only minor influence on the risk of ICH after rupture and are, therefore, not helpful in deciding on treatment of unruptured aneurysms.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

Epidemiologic and anatomic aspects comparing incidental and ruptured intracranial aneurysms: A single centre experience

The feasibility of multicentric international data such as integrated in the PHASES score for patient counseling in unruptured intracranial aneurysms has recently been challenged. To determine, whether this data is applicable to local populations in a restricted catchment area, we performed a retrospective mono-centric analysis comparing patients with ruptured aneurysms to patients with incidental aneurysms. 200 patients with unruptured aneurysms and 197 patients after aneurysmal subarachnoid hemorrhage were analyzed for risk factors differing between the groups and to the general German population. Subgroup analysis was performed for 25 patients harboring multiple aneurysms, in 19 patients with intracavernous aneurysms and in 77 women of childbearing potential. While the preponderance of female patients was confirmed, significantly more men figured in the patient group with subarachnoid hemorrhage (36.4%) than among unruptured aneurysms (25%). Patients with bleeding events were significantly younger (51.6 years) than patients with incidental aneurysms (57.8 years). The rupture risk prediction of the PHASES score concerning aneurysm size below 7 mm and patient age over 70 years could not be confirmed, instead score points correlated to the clinical outcome after rupture. In our population, pregnant women were not overrepresented. Intracavernous carotid aneurysms contributed to the low risk profile of giant aneurysms. Thus, recommendations from pooled international data have to be adapted cautiously to local circumstances. We retained seven items with predictive value for outpatient counseling: age, smoking, hypertonus and concurrent vascular aberrations as patient characteristics and irregular shape, (increasing) largest diameter and the harboring vessel for the aneurysm.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.     

颅内动脉瘤术中破裂危险因素分析

目的 分析颅内动脉瘤显微外科手术术中破裂的相关因素.方法 回顾性分析106例开颅显微手术治疗的颅内动脉瘤病人,对可能影响其破裂的因素,如性别、年龄、高血压病史、Hunt-Hess分级、CT-Fisher分级、动脉瘤部位、大小、瘤颈宽窄、手术时机、临时阻断夹应用与否、是否存在假性动脉瘤等,进行单因素和多因素logistic回归分析,寻找影响术中破裂的危险因素.结果 术中破裂动脉瘤的发生率是26.13%;Hunt-Hess分级、动脉瘤瘤颈宽窄、临时阻断与否、是否存在假性动脉瘤是术中动脉瘤破裂的危险因素;宽颈动脉瘤(OR=10.791,P=0.000),存在假性动脉瘤(OR=32.752,P=0.002),Hunt-Hess分级(OR=0.073,P=0.002)是术中动脉瘤破裂独立危险因素;术中临时阻断技术的应用(OR=0.055,P=0.001)是术中动脉瘤破裂独立保护因素.结论 颅内动脉瘤显微外科手术术中破裂主要与宽颈动脉瘤、存在假性动脉瘤、Hunt-Hess分级有关.临时阻断技术的应用为保护因素.