Asghar Saba, Khan Hurtamina, Parveen Saima, Rafi Sm Tariq
Saba Asghar, Final Year Medical Student Jinnah Sindh Medical University, Karachi, Pakistan.
Hurtamina Khan, FCPS. Assistant Professor, ENT and Head & Neck Surgery Jinnah Postgraduate Medical Centre, Jinnah Sindh Medical University, Karachi, Pakistan.
Pak J Med Sci. 2022 Mar-Apr;38(3Part-I):668-673. doi: 10.12669/pjms.38.3.4927.
To determine frequency of hearing loss among medical students using electroacoustic devices like hands free, headphone etc. through Pure Tone Audiometry.
This cross-sectional study was conducted among students at JSMU from December 2019 till February 2020. Ethical approval was obtained against Ref: JSMU/IRB/2019/-215. Calculated sample size was 194. Non-probability convenience sampling technique was employed. Students were invited to ENT OPD JPMC, Karachi. After informed consent, sociodemographic and electroacoustic device usage history was recorded. PTA was performed at octave frequencies for air (0.25-8kHz) and bone conduction (0.5kHz-4kHz). WHO grading of hearing impairment was used. Statistical analyses carried through IBM SPSS. Chi square test, Fischer exact test and independent test were applied at 95% CI and p value <0.05 as statistical significance.
Out of 246 students, 221 fulfilled inclusion criteria. Male to female ratio was 1:3. Mean age was 21 years (S.D: ±0.927). 96.4% were regularly using electroacoustic devices. 47.9% reported their use over five years. Insert type earbuds (73.8%) were the most preferred. Smartphone being the most common source (90%). Upon PTA, one third of medical students demonstrated sensorineural hearing loss at 0.25kHz and 0.5kHz. 9.5% reported associated tinnitus. Daily listening duration exceeded one hour among 78.8% while 26.4% practiced high volume setting. Males' average listening duration exceeded that of females (p=0.013). However, their mean audiometric thresholds did not vary significantly.
Mild sensorineural hearing loss was detected among one third of participants using personal listening devices. Precautions should be practiced while using these devices.
通过纯音听力计测定使用免提、耳机等电声设备的医学生听力损失的频率。
本横断面研究于2019年12月至2020年2月在JSMU的学生中进行。获得了伦理批准，编号为：JSMU/IRB/2019/-215。计算得出的样本量为194。采用非概率便利抽样技术。邀请学生前往卡拉奇JPMC的耳鼻喉科门诊。在获得知情同意后，记录社会人口统计学和电声设备使用史。在倍频程频率下对气导（0.25 - 8kHz）和骨导（0.5kHz - 4kHz）进行纯音听力测试。采用世界卫生组织听力障碍分级标准。通过IBM SPSS进行统计分析。在95%置信区间和p值<0.05时应用卡方检验、费舍尔精确检验和独立检验作为统计学显著性检验。
在246名学生中，221名符合纳入标准。男女比例为1:3。平均年龄为21岁（标准差：±0.927）。96.4%的学生经常使用电声设备。47.9%的学生报告使用时间超过五年。入耳式耳塞（73.8%）是最受欢迎的。智能手机是最常见的声源（90%）。在纯音听力测试中，三分之一的医学生在0.25kHz和0.5kHz处表现出感音神经性听力损失。9.5%的学生报告伴有耳鸣。78.8%的学生每天听音乐的时长超过一小时，而26.4%的学生使用高音量设置。男性平均听音乐时长超过女性（p = 0.013）。然而，他们的平均听力阈值没有显著差异。
在使用个人听力设备的参与者中，三分之一检测出轻度感音神经性听力损失。使用这些设备时应采取预防措施。
