A Didactic and Hands-on Module Enhances Resident Microsurgical Knowledge and Technical Skill

Ahmadieh, Tarek Y. El; Aoun, Salah G.; Tecle, Najib E. El; Nanney, Allan D.; Daou, Marc; Batjer, H. Hunt; Bendok, Bernard R.

doi:10.1227/neu.0000000000000104

Cited by 34 publications

(24 citation statements)

References 18 publications

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“…The NOMAT 10 scores confirmed the training model as reliable, and the scale held validity to support the training model as beneficial as well as the assessment tool as being appropriate. We could distinguish easily between experienced and inexperienced performers on the model using this scale.…”

Section: Validationmentioning

confidence: 65%

“…who were familiar with the cerebrovascular techniques. 10 To analyze construct validity, we divided participants into trained and untrained groups as described above.…”

Section: Construct Validitymentioning

confidence: 99%

“…This knot was made between the needle end of the suture and the preceding external suture loop. The other technique entailed both poles of the arteriotomies connected by separate microsutures with the [6][7][8][9][10][11][12] for human placental artery vs 12 [8][9][10][11][12][13][14][15] for M 4 .) The 1.8-mm diameter human placental artery most closely approximates the STA, although the thickness and amount of reticular fibers is statistically significantly different (p < 0.01 and p < 0.01, respectively); however, in practice such differences are not apparent during surgical procedures.…”

Section: Side-to-side and End-to-end Bypass Modelsmentioning

confidence: 99%

“…With scores ranging from 1 to 20, most of the trained (16 of 17; 94%) and untrained (12 of 13; 92%) participants (total 28 of 30; 93%) scored the ability of the training model to replicate real bypass surgery within the interval from "more than somewhat" (score 13) to "very well" (score 20), and 1 of 17 (6%) of the trained and 1 of 13 (8%) of the untrained (total 2 of 30; 7%) participants scored the training as "somewhat" replicating real surgery (a score within the interval of [8][9][10][11][12]. Differences in scores between the 2 groups show a trend toward significance (p = 0.06).…”

Section: Face and Content Validitymentioning

confidence: 99%

“…18 Previous studies noted that for evidence-based medicine techniques, the face, content, and construct validities should be examined as the first step for evaluating the benefit of a surgical simulation model before integrating the model into a training curriculum. 10 Validity measures reveal the instructive value of the simulation. Face validity relates to the realism of the simulator, and content validity is a judgment of the appropriateness of the simulator as a teaching modality.…”

Section: Validationmentioning

confidence: 99%

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Low-flow and high-flow neurosurgical bypass and anastomosis training models using human and bovine placental vessels: a histological analysis and validation study

Belykh

Lei

Safavi–Abbasi

et al. 2016

JNS

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N eurosurgical vascular cases often require complex microvascular bypass techniques, such as those used in operative corrections for moyamoya disease, 7,26,32 cerebral aneurysms, 9,13,14,19 and intracranial tumors. 30,31 Therefore, simple and accessible models for microvascular anastomosis training are increasingly essential for providing a means for refining and preserving skills. Several models, including chicken wings, 12,17 turkey wings, 1 rats, 15 human cadavers, 24,29 and plastic tubing, 22 have been proposed. However, these models are still less than ideal for various reasons, such as vessel diameter diversity, cost-effectiveness, artifacts due to storage (e.g., Low-flow and high-flow neurosurgical bypass and anastomosis training models using human and bovine placental vessels: a histological analysis and validation study obJective Microvascular anastomosis is a basic neurosurgical technique that should be mastered in the laboratory. Human and bovine placentas have been proposed as convenient surgical practice models; however, the histologic characteristics of these tissues have not been compared with human cerebral vessels, and the models have not been validated as simulation training models. In this study, the authors assessed the construct, face, and content validities of microvascular bypass simulation models that used human and bovine placental vessels. methods The characteristics of vessel segments from 30 human and 10 bovine placentas were assessed anatomically and histologically. Microvascular bypasses were performed on the placenta models according to a delineated training module by "trained" participants (10 practicing neurosurgeons and 7 residents with microsurgical experience) and "untrained" participants (10 medical students and 3 residents without experience). Anastomosis performance and impressions of the model were assessed using the Northwestern Objective Microanastomosis Assessment Tool (NOMAT) scale and a posttraining survey. results Human placental arteries were found to approximate the M 2 -M 4 cerebral and superficial temporal arteries, and bovine placental veins were found to approximate the internal carotid and radial arteries. The mean NOMAT performance score was 37.2 ± 7.0 in the untrained group versus 62.7 ± 6.1 in the trained group (p < 0.01; construct validity). A 50% probability of allocation to either group corresponded to 50 NOMAT points. In the posttraining survey, 16 of 17 of the trained participants (94%) scored the model's replication of real bypass surgery as high, and 16 of 17 (94%) scored the difficulty as "the same" (face validity). All participants, 30 of 30 (100%), answered positively to questions regarding the ability of the model to improve microsurgical technique (content validity). coNclusioNs Human placental arteries and bovine placental veins are convenient, anatomically relevant, and beneficial models for microneurosurgical training. Microanastomosis simulation using these models has high face, content, and construct validities. A NOMAT score of more than 5...

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Section: Validationmentioning

confidence: 65%

“…who were familiar with the cerebrovascular techniques. 10 To analyze construct validity, we divided participants into trained and untrained groups as described above.…”

Section: Construct Validitymentioning

confidence: 99%

Section: Side-to-side and End-to-end Bypass Modelsmentioning

confidence: 99%

Section: Face and Content Validitymentioning

confidence: 99%

Section: Validationmentioning

confidence: 99%

See 3 more Smart Citations

Low-flow and high-flow neurosurgical bypass and anastomosis training models using human and bovine placental vessels: a histological analysis and validation study

Belykh

Lei

Safavi–Abbasi

et al. 2016

JNS

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3D‐Printed Patient‐Specific Circles of Willis with an Intracranial Aneurysm and their Application to Neurointerventional Endovascular Simulation

Kim

Yang

Cho

et al. 2023

Adv Materials Technologies

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Cerebrovascular replicas are effective platforms that can simulate endovascular interventions in the treatment of intracranial aneurysm (IA), and an IA typically forms in the tortuously structured cerebral artery circulation known as the circle of Willis (CoW). Effective and reliable endovascular procedure simulation before actual clinical treatment is greatly helpful for neurosurgeons, but the simulation performance depends on how identical a CoW replica is to a patient's CoW. Herein, a tubular, transparent, and patient‐specific CoW replica is fabricated with realistic dimensions and elasticity using a combination of 3D printing and dip coating technique. First, a real‐scale CoW core substrate is constructed using an extrusion‐based 3D printing technology, then the thickness of the vascular wall is manipulated by coating the core substrate layer by layer, and finally the core substrate is dissolved to produce a tubular CoW structure. A liquid‐assisted dip coating method is utilized and optimized for uniform and high‐quality coating layers on the tortuous CoW core substrate. Moreover, the effectiveness of the CoW replica is demonstrated through an in‐house neurointerventional endovascular simulator. The proposed method paves a new way for practical and reliable endovascular simulations, which would help significantly improve the clinical outcomes of current IA treatments.

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3D Printing for Surgical Simulations

Rosa¹

2022

3D Printing in Plastic Reconstructive and Aesthetic Surgery

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A Didactic and Hands-on Module Enhances Resident Microsurgical Knowledge and Technical Skill

Cited by 34 publications

References 18 publications

Low-flow and high-flow neurosurgical bypass and anastomosis training models using human and bovine placental vessels: a histological analysis and validation study

Low-flow and high-flow neurosurgical bypass and anastomosis training models using human and bovine placental vessels: a histological analysis and validation study

3D‐Printed Patient‐Specific Circles of Willis with an Intracranial Aneurysm and their Application to Neurointerventional Endovascular Simulation

3D Printing for Surgical Simulations

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