Extending the indications of flow diversion to small, unruptured, saccular aneurysms of the anterior circulation.

BACKGROUND AND PURPOSE: Flow diverters are currently indicated for treatment of large and complex intracranial aneurysms. The purpose of this study was to determine whether the indications of flow diversion can be safely extended to unruptured, small, saccular aneurysms (<10 mm) of the anterior circulation. METHODS: Forty patients treated with the pipeline embolization device (PED) were matched in a 1:4 fashion with 160 patients treated with stent-assisted coiling based on patient age, sex, aneurysm location, and aneurysm size. Procedural complications, angiographic results, and clinical outcomes were analyzed and compared. RESULTS: The rate of periprocedural complications was 5% in the PED group and 3% in the stent-coil group (P=0.7). In multivariable analysis, increasing age was the only predictor of complications. At follow-up, a higher proportion of aneurysms treated with PED (80%) achieved complete obliteration compared with stent-coiled aneurysms (70%) but the difference did not reach statistical significance (P=0.2). In multivariable analysis, increasing aneurysm size and aneurysm location were predictors of nonocclusion. The rate of favorable outcome (modified Rankin Scale, 0-2 and modified Rankin Scale, 0-1) was similar in the PED group and the coil group. CONCLUSIONS: The PED was associated with similar periprocedural risks, clinical outcomes, and angiographic results compared with stent-assisted coiling. These findings suggest that the indications of PED can be safely extended to small intracranial aneurysms that are amenable to conventional endovascular techniques. Larger studies with long-term follow-up are necessary to determine the optimal treatment that leads to the highest rate of obliteration and best clinical outcomes.

Predictors of infections following cranioplasty: a retrospective review of a large single center study.

INTRODUCTION: The variables that predispose to postcranioplasty infections are poorly described in the literature. We formulated a multivariate model that predicts the risk of infection in patients undergoing cranioplasty. METHOD: Retrospective review of all patients who underwent cranioplasty following craniectomy from January, 2000, to December, 2011. Tested predictors were age, sex, diabetic status, hypertensive status, reason for craniectomy, urgency status of craniectomy, location of cranioplasty, reoperation for hematoma, hydrocephalus postcranioplasty, and material type. A multivariate logistic regression analysis was performed. RESULTS: Three hundred forty-eight patients met the study criteria. Infection rate was 26.43% (92/348). Of these cases with infection, 56.52% (52/92) were superficial (supragaleal), 43.48% (40/92) were deep (subgaleal), and 31.52% (29/92) were present in both the supragaleal and subgaleal spaces. The predominant pathogen was coagulase-negative staphylococcus (30.43%) followed by methicillin-resistant Staphylococcus aureus (22.83%) and methicillin-sensitive Staphylococcus aureus (15.22%). Approximately 15.22% of all cultures were polymicrobial. Multivariate analysis revealed convex craniectomy, hemorrhagic stroke, and hydrocephalus to be associated with an increased risk of infection (OR = 14.41; P < 0.05, OR = 4.33; P < 0.05, OR = 1.90; P = 0.054, resp.). CONCLUSION: Many of the risk factors for infection after cranioplasty are modifiable. Recognition and prevention of the risk factors would help decrease the infection's rate.

Postoperative Opioid-Prescribing Practices in Nasal Surgery: A Prospective Study.

Importance: There has been a greater awareness of the opioid epidemic. Studies are needed to better characterize opioid usage after outpatient nasal surgery. Objective: Provide data to guide prescription management for nasal procedures and investigate opioid prescription and subsequent consumption, with the aim of offering analysis to build evidence-based guidelines for postoperative pain management. Design, Setting, and Participants: In this prospective single-center study, morphine milligram equivalents (MME) consumption and pain scores were collected in 69 patients who underwent nasal surgery. Main Measures and Outcomes: Patient demographics, MME use, and pain scores were examined. MME use was compared with patient demographics, surgical procedure type, and postoperative pain scores. Results: In total, 3302 MME were prescribed: 2012 MME (61%) were used, leaving 1290 MME (39%). Patients were prescribed a total average of 47.8 ± 24.0 MME. Four (6%) patients required a second prescription. History of opioid use, benzodiazepine use, and obesity were negative predictors of opioid consumption (p ≤ 0.001). Conclusion and Relevance: Assessing opioid consumption for nasal procedures will guide prescribing practices. Our results indicate that prescription practices can likely be down titrated in patients with a history of certain medication consumption.

Online Ratings of Facial Plastic Surgeons: Worthwhile Additions to Conventional Patient Experience Surveys.

Background: Physician review websites are now commonly used by patients. However, in facial plastic surgery, the trends and content in these websites are not well studied. We examined online reviews for U.S. facial plastic surgeons, and compared comment content with the most commonly used patient experience survey, the Consumer Assessment of Healthcare Providers and Systems (CAHPS) administered by Press Ganey. Methods: A retrospective mixed method study was employed to quantitatively compare online ratings and comments of 100 randomly selected U.S. facial plastic surgeons on vitals.com, healthgrades.com, google.com and zocdoc.com. Qualitative content analysis was utilized to categorize themes present in 957 patient-generated (unverified) comments, and compare these with CAHPS survey questions and themes. Results: The physician review websites had favorable ratings of facial plastic surgeons with 84.55% five-star reviews on Healthgrades and 78.40% on Vitals. These ratings were similar across surgeon age (p = 0.44), gender (p = 0.85), and geographic region (p = 0.29). Of sites examined, Healthgrades and Vitals were most frequently used. Analysis of patient comments identified themes aligning with CAHPS content (e.g., physician interactions, efficiency, and recommendation likelihood), as well as additional themes such as patient's outcome perception (55.28% of comments) and finances (86% of negatively rated reviews). Conclusions: These exploratory results suggest that facial plastic surgeons are generally rated positively online, and the comments left on these websites provide additional feedback that is not currently included in CAHPS surveys. In evaluating the patient experience with facial plastic surgery practices, these websites may prove to be useful.

Beta-blocker therapy and impact on outcome after aneurysmal subarachnoid hemorrhage: a cohort study.

OBJECTIVE Cerebral vasospasm (cVSP) is a frequent complication of aneurysmal subarachnoid hemorrhage (aSAH), with a significant impact on outcome. Beta blockers (BBs) may blunt the sympathetic effect and catecholamine surge associated with ruptured cerebral aneurysms and prevent cardiac dysfunction. The purpose of this study was to investigate the association between preadmission BB therapy and cVSP, cardiac dysfunction, and in-hospital mortality following aSAH. METHODS This was a retrospective cohort study of patients with aSAH who were treated at a tertiary high-volume neurovascular referral center. The exposure was defined as any preadmission BB therapy. The primary outcome was cVSP assessed by serial transcranial Doppler with any mean flow velocity ≥ 120 cm/sec and/or need for endovascular intervention for medically refractory cVSP. Secondary outcomes were cardiac dysfunction (defined as cardiac troponin-I elevation > 0.05 µg/L, low left ventricular ejection fraction [LVEF] < 40%, or LV wall motion abnormalities [LVWMA]) and in-hospital mortality. RESULTS The cohort consisted of 210 patients treated between February 2009 and September 2010 (55% were women), with a mean age of 53.4 ± 13 years and median Hunt and Hess Grade III (interquartile range III-IV). Only 13% (27/210) of patients were exposed to preadmission BB therapy. Compared with these patients, a higher percentage of patients not exposed to preadmission BBs had transcranial Doppler-mean flow velocity ≥ 120 cm/sec (59% vs 22%; p = 0.003). In multivariate analyses, lower Hunt and Hess grade (OR 3.9; p < 0.001) and preadmission BBs (OR 4.5; p = 0.002) were negatively associated with cVSP. In multivariate analysis, LVWMA (OR 2.7; p = 0.002) and low LVEF (OR 1.1; p = 0.05) were independent predictors of in-hospital mortality. Low LVEF (OR 3.9; p = 0.05) independently predicted medically refractory cVSP. The in-hospital mortality rate was higher in patients with LVWMA (47.4% vs 14.8%; p < 0.001). CONCLUSIONS The study data suggest that preadmission therapy with BBs is associated with lower incidence of cVSP after aSAH. LV dysfunction was associated with higher medically refractory cVSP and in-hospital mortality. BB therapy may be considered after aSAH as a cardioprotective and cVSP preventive therapy.

Prognostic Indications of Elevated MCT4 and CD147 across Cancer Types: A Meta-Analysis.

BACKGROUND: Metabolism in the tumor microenvironment can play a critical role in tumorigenesis and tumor aggression. Metabolic coupling may occur between tumor compartments; this phenomenon can be prognostically significant and may be conserved across tumor types. Monocarboxylate transporters (MCTs) play an integral role in cellular metabolism via lactate transport and have been implicated in metabolic synergy in tumors. The transporters MCT1 and MCT4 are regulated via expression of their chaperone, CD147. METHODS: We conducted a meta-analysis of existing publications on the relationship between MCT1, MCT4, and CD147 expression and overall survival and disease-free survival in cancer, using hazard ratios derived via multivariate Cox regression analyses. RESULTS: Increased MCT4 expressions in the tumor microenvironment, cancer cells, or stromal cells were all associated with decreased overall survival and decreased disease-free survival (p < 0.001 for all analyses). Increased CD147 expression in cancer cells was associated with decreased overall survival and disease-free survival (p < 0.0001 for both analyses). Few studies were available on MCT1 expression; MCT1 expression was not clearly associated with overall or disease-free survival. CONCLUSION: MCT4 and CD147 expression correlate with worse prognosis across many cancer types. These results warrant further investigation of these associations.

Complications following cranioplasty: incidence and predictors in 348 cases.

OBJECT: The factors that contribute to periprocedural complications following cranioplasty, including patient-specific and surgery-specific factors, need to be thoroughly assessed. The aim of this study was to evaluate risk factors that predispose patients to an increased risk of cranioplasty complications and death. METHODS: The authors conducted a retrospective review of all patients at their institution who underwent cranioplasty following craniectomy for stroke, subarachnoid hemorrhage, epidural hematoma, subdural hematoma, and trauma between January 2000 and December 2011. The following predictors were tested: age, sex, race, diabetic status, hypertensive status, tobacco use, reason for craniectomy, urgency status of the craniectomy, graft material, and location of cranioplasty. The cranioplasty complications included reoperation for hematoma, hydrocephalus postcranioplasty, postcranioplasty seizures, and cranioplasty graft infection. A multivariate logistic regression analysis was performed. Confidence intervals were calculated as the 95% CI. RESULTS: Three hundred forty-eight patients were included in the study. The overall complication rate was 31.32% (109 of 348). The mortality rate was 3.16%. Predictors of overall complications in multivariate analysis were hypertension (OR 1.92, CI 1.22-3.02), increasing age (OR 1.02, CI 1.00-1.04), and hemorrhagic stroke (OR 3.84, CI 1.93-7.63). Predictors of mortality in multivariate analysis were diabetes mellitus (OR 7.56, CI 1.56-36.58), seizures (OR 7.25, CI 1.238-42.79), bifrontal cranioplasty (OR 5.40, CI 1.20-24.27), and repeated surgery for hematoma evacuation (OR 13.00, CI 1.51-112.02). Multivariate analysis was also applied to identify the variables that affect the development of seizures, the need for reoperation for hematoma evacuation, the development of hydrocephalus, and the development of infections. CONCLUSIONS: The authors' goal was to provide the neurosurgeon with predictors of morbidity and mortality that could be incorporated in the clinical decision-making algorithm. Control of a patient's risk factors and early recognition of complications may help practitioners avoid the exhaustive list of complications.

Long-term catheter angiography after aneurysm coil therapy: results of 209 patients and predictors of delayed recurrence and retreatment.

OBJECT: Aneurysm recurrence after coil therapy remains a major shortcoming in the endovascular management of cerebral aneurysms. The need for long-term imaging follow-up was recently investigated. This study assessed the diagnostic yield of long-term digital subtraction angiography (DSA) follow-up and determined predictors of delayed aneurysm recurrence and retreatment. METHODS: Inclusion criteria were as follows: 1) available short-term and long-term (> 36 months) follow-up DSA images, and 2) no or only minor aneurysm recurrence (not requiring further intervention, i.e., < 20%) documented on short-term follow-up DSA images. RESULTS: Of 209 patients included in the study, 88 (42%) presented with subarachnoid hemorrhage. On shortterm follow-up DSA images, 158 (75%) aneurysms showed no recurrence, and 51 (25%) showed minor recurrence (< 20%, not retreated). On long-term follow-up DSA images, 124 (59%) aneurysms showed no recurrence, and 85 (41%) aneurysms showed recurrence, of which 55 (26%) required retreatment. In multivariate analysis, the predictors of recurrence on long-term follow-up DSA images were as follows: 1) larger aneurysm size (p = 0.001), 2) male sex (p = 0.006), 3) conventional coil therapy (p = 0.05), 4) aneurysm location (p = 0.01), and 5) a minor recurrence on short-term follow-up DSA images (p = 0.007). Ruptured aneurysm status was not a predictive factor. The sensitivity of short-term follow-up DSA studies was only 40.0% for detecting delayed aneurysm recurrence and 45.5% for detecting delayed recurrence requiring further treatment. CONCLUSIONS: The results of this study highlight the importance of long-term angiographic follow-up after coil therapy for ruptured and unruptured intracranial aneurysms. Predictors of delayed recurrence and retreatment include large aneurysms, recurrence on short-term follow-up DSA images (even minor), male sex, and conventional coil therapy.

Somatosensory evoked potential changes in neuroendovascular procedures: incidence and association with clinical outcome in 873 patients.

BACKGROUND: Neurophysiological monitoring is routinely used during neurosurgical procedures. Use of neurophysiological monitoring has extended to neuroendovascular procedures, but evidence of its impact on clinical outcome in this arena is limited. OBJECTIVE: To report the incidence of significant intraoperative somatosensory evoked potential (SSEP) changes during neuroendovascular surgery and to correlate SSEP changes with clinical outcomes. METHODS: Patients who underwent neuroendovascular surgery at our institution between 2011 and 2013 were included in the analysis. Medical charts and imaging studies were reviewed retrospectively for sex, age, lesion type and size, clinical presentation, type of endovascular procedure, duration of SSEP change, reversibility of SSEP change, incidence of intraoperative complications and related mortalities, presence of new infarction within 72 hours of intervention, and discharge outcome. RESULTS: Of 873 consecutive patients, 52 (6%) had clinically significant intraoperative SSEP changes. Twenty-four patients (46%) had SSEP changes that were corrected, and 28 patients (54%) had changes that were not reversed before the end of surgery. Both decreased duration and reversal of SSEP changes were associated with a lower incidence of postoperative infarction and more favorable clinical outcome on discharge. The positive predictive value of an irreversible SSEP change for postoperative infarction in our study was 21%, and the negative predictive value was 83%. CONCLUSION: The approximate incidence of SSEP changes is 6% during neuroendovascular procedures. Rapid reversal of SSEP changes is associated with better outcomes. SSEP monitoring may be a valuable tool for preventing complications after neuroendovascular interventions.