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716 citation(s) found for "Ma, Colin".

Carotid Artery Injury during Transsphenoidal Pituitary Surgery: Lessons from a 15-Year Modern Microsurgery Cohort
Meyer, Jenna , Perry, Avital , Graffeo, Christopher S. , Marcellino, Chris , Burrows, Anthony M. , Driscoll, Colin L. W., Meyer, Fredric B. , Carlstrom, Lucas P. , Marcellino, Christopher R, Burrows, Anthony, Marcellino, Christopher , Bancos, Irina

Journal of Neurological Surgery Part B: Skull Base | July 24, 2019 | Volume: 81 | Issue: 05 | Pages: 594-602

10.1055/s-0039-1692484 | PMID 33134028 Get It

Background Internal carotid artery (ICA) injury is a rare but potentially catastrophic complication of transsphenoidal resection (TSR) of pituitary tumors, potentially resulting in a host of deficits due to the risk of hemorrhage, ischemia, or even death. The endoscopic endonasal approach (EEA) has gained considerable popularity in the modern era, with few busy neurosurgeons remaining committed to practicing transnasal pituitary microsurgery. Our objective was therefore to characterize the overall incidence of ICA injury in a large, longitudinal, single-surgeon microscopic TSR series conducted during the modern EEA era. Methods Retrospective case series. Results Overall TSR volume by the senior author (F.B.M.) was 817 pituitary tumors during the study period, 2002 to 2017. Within that cohort, two instances of ICA injury were identified (0.2%), including one each with Cushing's disease and acromegaly, both of whom ultimately recovered without residual neurologic deficit. No pediatric injuries were identified. Conclusion Vascular injury is an exceedingly rare complication of transsphenoidal pituitary surgery. Adjuncts to prevent this complication include careful review of the coronal magnetic resonance imaging, identification of the midline, as needed use of the Doppler, and initial caudal opening of the sellar dura. Although potentially disastrous, good neurologic outcomes may be obtained, with immediate judicious packing followed by immediate digital subtraction angiography to assess vessel patency and secondary complications such as pseudoaneurysm.
Stanniocalcin-1 is a Modifier of Oxygen-Induced Retinopathy Severity
Hartnett, M. Elizabeth , Bretz, Colin A. , Hann, Cheryl R., Cui, Ricky Z. , Marmorstein, Alan D. , Sheikh‐Hamad, David , Fautsch, Michael P. , Roddy, Gavin W. , Roddy, Gavin W , Dalvin, Lauren A. , Hartnett, M. Elizabeth , Marmorstein, Alan D

Current Eye Research | July 17, 2019 | Volume: 45 | Issue: 1 | Pages: 46-51

10.1080/02713683.2019.1645184 | PMID 31314602 Get It

Impact of cochlear modiolus dose on hearing preservation following stereotactic radiosurgery for non–vestibular schwannoma neoplasms of the lateral skull base: a cohort study
Jacob, Jeffrey T. , Graffeo, Christopher S. , Perry, Avital , Oldenburg, Michael , Foote, Robert L. , Pollock, Bruce E. , Driscoll, Colin L. W., Carlson, Matthew L. , Link, Michael J. , Carlstrom, Lucas P.

Journal of Neurosurgery | July 13, 2019 | Volume: 133 | Issue: 3 | Pages: 736-741

10.3171/2019.4.jns19201 | PMID 31299651 Get It

OBJECTIVERadiation dose to the cochlea has been proposed as a key prognostic factor in hearing preservation following stereotactic radiosurgery (SRS) for vestibular schwannoma (VS). However, understanding of the predictive value of cochlear dose on hearing outcomes following SRS for patients with non-VS tumors of the lateral skull base (LSB) is incomplete. The authors investigated rates of hearing loss following high-dose SRS in patients with LSB non-VS lesions compared with patients with VS.METHODSPatients with LSB meningioma or jugular paraganglioma and serviceable pretreatment hearing who underwent SRS treatment during 2007–2016 and received a modiolus dose > 5 Gy were included in a retrospective cohort study, along with a similarly identified control group of consecutive patients with sporadic VS.RESULTSSixteen patients with non-VS tumors and a control group of 43 patients with VS met study criteria. Serviceable hearing, defined as American Academy of Otololaryngology–Head and Neck Surgery class A/B, was maintained in 13 non-VS versus 23 VS patients (81% vs 56%, p = 0.07). All 3 instances of hearing loss in non-VS patients were observed in cerebellopontine angle (CPA) meningiomas. Non-VS with preserved hearing had a median modiolus dose of 6.9 Gy (range 5.7–19.2 Gy), versus 7.4 Gy (range 5.4–7.6 Gy) in those patients with post-SRS hearing loss (p = 0.53). Sporadic VS patients received an overall median modiolus point-dose of 6.8 Gy (range 5.4–11.7 Gy).CONCLUSIONSThe modiolus dose threshold of 5 Gy does not predict hearing loss in patients with non-VS tumors undergoing SRS, suggesting that dosimetric parameters derived from VS may not be applicable to this population. Differential rates of hearing loss appear to vary by pathology, with paragangliomas and petroclival meningiomas demonstrating decreased risk of hearing loss compared to CPA meningiomas that may directly compress the cochlear nerve similarly to VS.
Pivotal Clinical Study to Evaluate the Safety and Effectiveness of the MANTA Percutaneous Vascular Closure Device
Wood, David , Krajcer, Zvonimir , Sathananthan, Janarthanan , Strickman, Neil E., Metzger, Chris, Fearon, William F. , Aziz, Mark, Satler, Lowell F. , Waksman, Ron , Eng, Marvin H. , Heimansohn, David, Sampson, Andrew, Coady, Paul , Rodriguez, Roberto , Krishnaswamy, Amar , Lee, Jason T. , Ben‐Dor, Itsik , Moainie, Sina L. , Kodali, Susheel , Yadav, Pradeep , Kozak, Mark, Bacharach, J. Michael, Feldman, Ted , Nanjundappa, Aravinda , Bersin, Robert M., Potluri, Srinivasa , Barker, Colin M. , Bernardo, Nelson L. , Lumsden, Alan B. , Dake, Michael D. , Brown, David L. , Maor, Nathaniel, Nardone, Samuel, Webb, John G. , Investigators, on behalf of the SAFE MANTA Study, Kapadia, Samir , Greenbaum, Adam B. , Szerlip, Molly , Chhatriwalla, Adnan K , O’Neill, Brian Patrick , Guerrero, Mayra , Zhang, Ming , Barleben, Andrew R. , Campbell, John , Cohen, David Jonathan , Lauck, Sandra , O’Neill, William W. , Investigators, on behalf of the SAFE MANTA Study

Circulation: Cardiovascular Interventions | July 12, 2019 | Volume: 12 | Issue: 7 | Pages: No page available

10.1161/circinterventions.119.007258 | PMID 31296082 Get It

Background: Open surgical closure and small-bore suture-based preclosure devices have limitations when used for transcatheter aortic valve replacement, percutaneous endovascular abdominal aortic aneurysm repair, or percutaneous thoracic endovascular aortic aneurysm repair. The MANTA vascular closure device is a novel collagen-based technology designed to close large bore arteriotomies created by devices with an outer diameter ranging from 12F to 25F. In this study, we determined the safety and effectiveness of the MANTA vascular closure device. Methods and Results: A prospective, single arm, multicenter investigation in patients undergoing transcatheter aortic valve replacement, percutaneous endovascular abdominal aortic aneurysm repair, or thoracic endovascular aortic aneurysm repair at 20 sites in North America. The primary outcome was time to hemostasis. The primary safety outcomes were accessed site-related vascular injury or bleeding complications. A total of 341 patients, 78 roll-in, and 263 in the primary analysis cohort, were entered in the study between November 2016 and September 2017. For the primary analysis cohort, transcatheter aortic valve replacement was performed in 210 (79.8%), and percutaneous endovascular abdominal aortic aneurysm repair or thoracic endovascular aortic aneurysm repair was performed in 53 (20.2%). The 14F MANTA was used in 42 cases (16%), and the 18F was used in 221 cases(84%). The mean effective sheath outer diameter was 22F (7.3 mm). The mean time to hemostasis was 65±157 seconds with a median time to hemostasis of 24 seconds. Technical success was achieved in 257 (97.7%) patients, and a single device was deployed in 262 (99.6%) of cases. Valve Academic Research Consortium-2 major vascular complications occurred in 11 (4.2%) cases: 4 received a covered stent (1.5%), 3 had access site bleeding (1.1%), 2 underwent surgical repair (0.8%), and 2 underwent balloon inflation (0.8%). Conclusions: In a selected population, this study demonstrated that the MANTA percutaneous vascular closure device can safely and effectively close large bore arteriotomies created by current generation transcatheter aortic valve replacement, percutaneous endovascular abdominal aortic aneurysm repair, and thoracic endovascular aortic aneurysm repair devices. Clinical Trial Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT02908880.
OR19-6 A Novel Anti-CD40 Monoclonal Antibody, Iscalimab, Successfully Treats Graves’ Hyperthyroidism
Kahaly, George J. , Amer, Ahmed , Schuhmann, Imelda , Espié, Pascal, Rush, James S. , Basson, Craig T. , He, Yanling , Stan, Marius N. , Gergely, Péter Attila , Colin, Laurence , Amer, Ahmed

Journal of the Endocrine Society | June 5, 2019 | Volume: 3 | Issue: Supplement_1 | Pages: No page available

10.1210/js.2019-or19-6 Get It

The association of resistance training with mortality: A systematic review and meta-analysis
Saeidifard, Farzane , Medina‐Inojosa, José R. , Olson, Thomas P. , Bonikowske, Amanda R. , Vinciguerra, Manlio , Vinciguerra, Manlio , Medina-Inojosa, José R , Bonikowske, Amanda , West, Colin P. , Somers, Virend K. , Prokop, Larry J. , López-Jiménez, Francisco

European Journal of Preventive Cardiology | May 20, 2019 | Volume: 26 | Issue: 15 | Pages: 1647-1665

10.1177/2047487319850718 | PMID 31104484 Get It

Background The benefits of aerobic exercise are well-studied; there is no consensus on the association between resistance training and major adverse cardiovascular outcomes. This systematic review and meta-analysis aimed to address this issue. Design and methods We searched for randomized trials and cohort studies that evaluated the association between resistance training and mortality and cardiovascular events. Two investigators screened the identified abstracts and full-texts independently and in duplicate. Cochrane tools were used to assess the risk of bias. We calculated hazard ratios and 95% confidence intervals using random effect models. Results From the 1430 studies identified, 11 (one randomized trial and 10 cohort studies) met the inclusion criteria, totaling 370,256 participants with mean follow-up of 8.85 years. The meta-analysis showed that, compared with no exercise, resistance training was associated with 21% (hazard ratio (95% confidence interval (CI)), 0.79 (0.69–0.91)) and 40% (hazard ratio (95% CI), 0.60 (0.49–0.72)) lower all-cause mortality alone and when combined with aerobic exercise, respectively. Furthermore, resistance training had a borderline association with lower cardiovascular mortality (hazard ratio (95% CI), 0.83 (0.67–1.03)). In addition, resistance training showed no significant association with cancer mortality. Risk of bias was low to intermediate in the included studies. One cohort study looked at the effect of resistance training on coronary heart disease events in men and found a 23% risk reduction (risk ratio, 0.77, CI: 0.61–0.98). Conclusion Resistance training is associated with lower mortality and appears to have an additive effect when combined with aerobic exercise. There are insufficient data to determine the potential beneficial effect of resistance training on non-fatal events or the effect of substituting aerobic exercise with resistance training.
Establishing a Mutually Respectful Environment in the Workplace: A Toolbox for Performance Excellence
Duma, Narjust , Maingi, Shail , Tap, William D. , Weekes, Colin D. , Thomas, Charles R. Jr.

American Society of Clinical Oncology Educational Book | May 17, 2019 | Volume: No volume available | Issue: 39 | Pages: e219-e226

10.1200/edbk_249529 | PMID 31099664 Get It

Most health care professionals spend a substantial amount of their time at the workplace. Our interactions with team members can define our daily experiences, impact our work performance, and influence our overall job satisfaction. Over the last years, how we interact with colleagues and patients has changed with the introduction of social media, a tenser political climate, and an evolving health care system. In oncology, a team can be composed of medical students, clinicians, and support and administrative staff within a heavy emotional environment where some of our patients are facing the risk of early mortality and most are dealing with the unmeasurable burden of cancer. Many of these factors can increase the risk for professionalism lapses. We discuss common challenges faced in the practice of cancer care, including the generational gap between medical trainees and senior members, gender disparities, and microaggressions. Microaggressions represent verbal, behavioral, and environmental indignities that communicate hostile, derogatory, and negative slights that insult a target person or group. Microaggressions should not be accepted as the norm in the workplace. It is essential to recognize these negative behaviors and manage them effectively to reduce or even prevent the long-term toxicities that these behaviors can bring to the workplace environment. Ultimately, we must acknowledge that these issues exist and remember that education and collaboration are the pillars of an inclusive workplace. We owe such efforts to our patients who deserve good care, to our partners in the care of patients so that they feel supported and included, and to ourselves.
A New Lateral Wall Electrode: Evaluation of Surgical Handling, Radiographic Placement, and Histological Appraisal of Insertion Trauma
Kim, Ana H. , Driscoll, Colin L. W., Cullen, Robert D., Rebscher, Stephen J., Rivas, Alejandro , Yawn, Robert J. , Isaacson, Brandon

Otology & Neurotology | May 6, 2019 | Volume: 40 | Issue: 5S | Pages: S23-S28

10.1097/mao.0000000000002210 | PMID 31225819 Get It

Objective: To describe histologic and radiographic findings associated with insertion of a new lateral wall electrode in human temporal bones, as well as quantify the ease of insertion as characterized by multiple cochlear implant surgeons. Setting: Multi-institutional cadaveric study. Methods: The Slim J electrode was inserted in cadaveric temporal bones via a standard mastoidectomy and facial recess approach. Insertion was performed by five cochlear implant surgeons with no previous experience with the Slim J electrode array. Electrode array insertion was performed via a round window, an extended round window, or a cochleostomy approach. Intracochlear trauma, and angular insertion depth was assessed histologically and radiologically, respectively, after placement of the Slim J electrode array. Results: Scala tympani insertion was accomplished in all 40 specimens. Thirty-eight specimens (95%) showed minimal trauma (Esrhaghi grade 0 or 1). One patient had rupture of basilar membrane (grade 2 trauma) at 380 degrees. One patient had grade 4 trauma with scalar translocation beginning at 210 degrees. The mean angular insertion depth was 416.4 degrees (range: 338.7–509.2 degrees, SD 44 degrees). Surgical handling was described as easy in 38 cases (95%). Conclusion: In a human cadaveric model the lateral wall Slim J electrode produced minimal intracochlear trauma that was positioned completely within the scala tympani in 97.5% of cases.
Localized vagina/uterus rhabdomyosarcoma (VU RMS): Results of a pooled analysis from four international cooperative groups.
Anderson, James Robert, Schwob, Dominique, Rodeberg, David A. , Martelli, Hélène , Walterhouse, David , Arndt, Carola A.S., Rey, Annie, Oberlin, Odile, Meder, Christine, Minard‐Colin, Véronique , Anderson, James Robert, Bisogno, Gianni , Stevens, Michaël C.G. , Ferrari, Andrea , Salvo, Gian Luca De , Hawkins, Douglas S.

Journal of Clinical Oncology | April 19, 2019 | Volume: 33 | Issue: 15_suppl | Pages: 10063-10063

10.1200/jco.2015.33.15_suppl.10063 Get It