Comparison of two teaching methods for stopping the bleed: a randomized controlled trial

Chen, Shuangyi; Li, Jinfei; DiNenna, Michael A.; Gao, Chang-Yue; Chen, Shijie; Wu, Song; Tang, Xiaohong; He, Jinshen

doi:10.1186/s12909-022-03360-4

Cited by 3 publications

(1 citation statement)

References 41 publications

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“…The relative conductivity was assessed following Chen Aikui's methodology to evaluate cell membrane integrity [18]. Uniformly sized plant leaves (ensuring leaf integrity and avoiding stem nodes) were first rinsed with tap water and then thrice with distilled water.…”

Section: Determination Of Water Content Relative Conductivity Malondi...mentioning

confidence: 99%

Salt Tolerance in Machilus faberi: Elucidating Growth and Physiological Adaptations to Saline Environments

Mo,

Liu,

Wei

et al. 2024

Biology

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Adversity stress is the main environmental factor limiting plant growth and development, including salt and other stress factors. This study delves into the adaptability and salt tolerance mechanisms of Machilus faberi Hemsl, a species with potential for cultivation in salinized areas. We subjected the plants to various salt concentrations to observe their growth responses and to assess key physiological and biochemical indicators. The results revealed that under high salt concentrations (500 and 700 mmol−1/L), symptoms such as leaf yellowing, wilting, and eventual death were observed. Notably, plant height and shoot growth ceased on the 14th day of exposure. Chlorophyll content (a, b, total a + b, and the a/b ratio) initially increased but subsequently decreased under varying levels of salt stress. Similarly, the net photosynthetic rate, stomatal conductance, leaf water content, and root activity significantly declined under these conditions. Moreover, we observed an increase in malondialdehyde levels and relative conductivity, indicative of cellular damage and stress. The activity of superoxide dismutase and ascorbate peroxidase initially increased and then diminished with prolonged stress, whereas peroxidase activity consistently increased. Levels of proline and soluble protein exhibited an upward trend, contrasting with the fluctuating pattern of soluble sugars, which decreased initially but increased subsequently. In conclusion, M. faberi exhibits a degree of tolerance to salt stress, albeit with growth limitations when concentrations exceed 300 mmol−1/L. These results shed light on the plant’s mechanisms of responding to salt stress and provide a theoretical foundation for its cultivation and application in salt-affected regions.

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Section: Determination Of Water Content Relative Conductivity Malondi...mentioning

confidence: 99%

Salt Tolerance in Machilus faberi: Elucidating Growth and Physiological Adaptations to Saline Environments

Mo,

Liu,

Wei

et al. 2024

Biology

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Open-source code maps traumas for targeting interventions: Applying the model to compare penetrating traumas with “Stop the Bleed” training locations

Draper,

Rose,

Knickerbocker

et al. 2024

The American Journal of Surgery

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A randomized controlled trial comparison of PTEBL and traditional teaching methods in “Stop the Bleed” training

Zhao,

Cao,

et al. 2024

BMC Med Educ

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Background The Stop the Bleed (STB) training program was launched by the White House to minimize hemorrhagic deaths. Few studies focused on the STB were reported outside the United States. This study aimed to evaluate the effectiveness of a problem-, team- and evidence-based learning (PTEBL) approach to teaching, compared to traditional teaching methods currently employed in STB courses in China. Methods This study was a parallel group, unmasked, randomised controlled trial. We included third-year medical students of a five-year training program from the Xiangya School of Medicine, Central South University who voluntarily participated in the trial. One hundred fifty-three medical students were randomized (1:1) into the PTEBL group (n = 77) or traditional group (n = 76). Every group was led by a single instructor. The instructor in the PTEBL group has experienced in educational reform. However, the instructor in the traditional group follows a traditional teaching mode. The teaching courses for both student groups had the same duration of four hours. Questionnaires were conducted to assess teaching quality before and after the course. The trial was registered in the Central South University (No. 2021JY188). Results In the PTEBL group, students reported mastery in three fundamental STB skills—Direct Finger Compression (61/77, 79.2%), Packing (72/77, 93.8%), and Tourniquet Placement (71/77, 92.2%) respectively, while 76.3% (58/76), 89.5% (68/76), and 88.2% (67/76) of students in the traditional group (P > 0.05 for each pairwise comparison). 96.1% (74/77) of students in the PTEBL group felt prepared to help in an emergency, while 90.8% (69/76) of students in the traditional group (P > 0.05). 94.8% (73/77) of students reported improved teamwork skills after the PTEBL course, in contrast with 81.6% (62/76) of students in the traditional course (P = 0.011). Furthermore, a positive correlation was observed between improved clinical thinking skills and improved teamwork skills (R = 0.82, 95% CI: 0.74–0.88; P < 0.001). Conclusions Compared with the traditional teaching method, the PTEBL method was superior in teaching teamwork skills, and has equally effectively taught hemostasis techniques in the emergency setting. The PTEBL method can be introduced to the STB training in China.

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Comparison of two teaching methods for stopping the bleed: a randomized controlled trial

Cited by 3 publications

References 41 publications

Salt Tolerance in Machilus faberi: Elucidating Growth and Physiological Adaptations to Saline Environments

Salt Tolerance in Machilus faberi: Elucidating Growth and Physiological Adaptations to Saline Environments

Open-source code maps traumas for targeting interventions: Applying the model to compare penetrating traumas with “Stop the Bleed” training locations

A randomized controlled trial comparison of PTEBL and traditional teaching methods in “Stop the Bleed” training

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