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Table 1 Description of randomized clinical trials that compared 3D printing prototypes with commercial equipment in mannequins

From: Advancements in additive manufacturing for video laryngoscopes: a comprehensive scoping and technological review

Author/year

N

Comarck-Lehane identification

Laryngeal visualization time

Intubation time

Intubation success rate

Intervention/control

Cohen T; Nishioka H./2017 [13]

64

(anesthesiologists)

VLB:100%

MAC: 21%

(p = 0.000)

VLB:16.6seg

MAC:39.1seg

(p = 0.001)

VLB:55.4seg

MAC:91.8seg

(p = 0.042)

VLB:94.1%

MAC:60%

(p = 0.003)

VBL (3D)

MAC blade (commercial)

Lambert C; John S; John A./2020 [7]

43 (professionals)

Pentax vs

TVL vs

Macintosh

(p < 0.001)

No

TVL 17.5seg

Pentax15.5seg

Macintosh 27seg

(p < 0.0001)

TVL 88%

Pentax 97.7%

Macintosh 67.4%

TVL (Tanser)(3D)

Pentax AWS(3D)

Macintosh

(commercial)

De Villiers C; Alphonsus C; Eave D; et al. 2021 [8]

100 (experienced anesthesiologists and consultants)

No

No

VLP(3D):13.3 s

MAC:18.2seg

No

VLP(3D)

CMAC

(commercial)

Ataman A; Altina E 2021 [1]

23 (emergency physicians and clinicians > 2 years of experience)

No

AirAngel 13.6seg

Glidescope 8.1seg

AirAngel 27.7seg

Glidescope

20.1 seg

AirAngel 56%

Gladescope 87%

AirAngel (3D)

Glidescope (commercial)

Fonternel T; Rooyen H; Joubert G; Turton E

36 anesthetics

C-MAC 80.6% class 1

Novel Device 50%

(p = 0.0045)

C-MAC 5seg

Novel Device 9.4seg

(p < 0.001) (CI = 6.2–1.0)

C-MAC 13.8seg

Novel Device 19seg

(p = 0.001)

100%

C-MACR VL with D-blade