The Effect of White Noise on the Ability of Second-year and Third-year Medical Students to Recognise Correctly Adventitious Lung Sound
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 52
- 试验地点
- 2
- 主要终点
- Students' Accuracy, Specificity, and Sensitivity Measurements under Different White Noise
研究概览
简要总结
Title: The Effect of White Noise on the Ability of a Medical Student to Recognise Correctly Adventitious Lung Sound.
Methodology: Randomized, controlled trial, blind study.
Study Duration: The estimated duration for the main protocol (e.g., from the start of screening to the last subject processed and finishing the study) is approximately 4 weeks.
Study Centre: Lithuanian University of Health Sciences (LSMU) and Kaunas Hospital of LSMU.
Objectives: Primary Objective: To evaluate the accuracy of second-year and third-year medical students in correctly identifying pathological and nonpathological lung sounds under different white noise levels.
Number of Subjects: A group of 104 students will be exposed (EXP) to learning pathological and nonpathological sounds for 3 days. After 3 days students will take 3 tests with different levels of white noise pollution added ( signal-to-noise ratio (SNR) 20, 40 and none added).
Diagnosis and Main Inclusion Criteria:
Inclusion Criteria: male and female second and third-year LSMU students; 18-40 years old; in any distribution. Consent and compliance with all aspects of the study protocol, and methods, providing data during follow-up contact. Please, see the methods section for a full list of inclusion criteria. Exclusion Criteria: deafness; age over 40; conditions that prevent the student from using earphones. Please, see the methods section for a full list of exclusion criteria.
Regimen: EXP group will receive 3-day training of 101 lung sounds.
Statistical Methodology: Results will be analyzed with the SPSS (version 27) and Jamovi (version 2.3.21). A p-value < 0.05 will be considered statistically significant. The effect of 3 levels of white noise on the EXP group will be compared utilizing a one-way analysis of variance (ANOVA) statistical test. Though, if data does not adhere to a normal distribution then Kruskal - Wallis will be applied. McNemar's test will be used to compare if there was a statistical difference between second-year and third-year students.
详细描述
Purpose To evaluate the accuracy of second-year and third-year students in correctly identifying pathological and nonpathological lung sounds under different white noise levels.
Background Auscultation is one of the four pillars of patient examination [1, 2, 3], and is particularly during the pulmonary objective investigation. Today, the assessment of auscultation sounds remains subjective and depends on the qualifications and expertise of a specialist [4, 5]. Arts et al. [6] authors recommend leaving the practice of traditional auscultation to experienced specialists since sensitivity is as low as 37% when identifying between normal cases and several lung pathologies. Hospitals can have a lot of white noise which easily exceed WHO recommendation [7]. Though some research shows that physicians can adapt to extreme loudness [9].
There is a lack of research in clinical settings on noise levels' effect on lung sound recognition by healthcare workers.
Hence our research is interested to investigate the effect of white noise (WN) at 3 different levels (SNR 20,40, none) on medical students' ability to correctly identify various lung sounds.
Goals of the study To evaluate the specificity, sensitivity and accuracy of second-year and third-year medical to correctly identify lung sounds under three different WN levels.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
盲法说明
The subject will be assigned a unique screening/enrolment number.
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Male and female second and third-year LSMU students;
- •18 years and older;
- •subject that provides full written consent to participate in the study.
排除标准
- •not a second-year or third-year at LSMU;
- •deafness;
- •age over 40;
- •conditions that prevent students from using earphones;
- •subject does not provide full consent.
结局指标
主要结局
Students' Accuracy, Specificity, and Sensitivity Measurements under Different White Noise
时间窗: Approximately 4 weeks from the start until the last subject finish the study.
Measures of medical students' specificity, sensitivity and accuracy in identifying pathological lung sounds will be assessed under 3 levels of white noise (WN). The WN is created by using a sinus wave. The sinus wave is added to the 15s lung sound recordings. The signal-to-noise ratio (SNR) levels are SNR-20; SNR-40 and no WN. The SNR-20 is perceived as the loudest WN by a human subject. Once each of the 9 questions (each containing six 15s lung sound recordings) is created the files are uploaded to the SAITI website. The result is 9 cases with no SNR; 9 cases with SNR-40; 9 cases with SNR-20. During the examination, a student is asked to listen to each of the six points for each case and then decide if pathology is present. The test results are tabulated for true positives (TP), true negatives (TN), false positives (FP), and false negatives (FN). The diagnostic values are compared at different levels of WN (SNR-20; SNR-40; no-SNR).
次要结局
未报告次要终点
研究者
Haroldas Razvadauskas
Doctor of Medicine
Lithuanian University of Health Sciences