Department of Forensic Medicine, Nobel Medical College Teaching Hospital, Biratnagar, Morang, Nepal.
Department of Forensic Medicine, Koshi Hospital, Biratnagar, Morang, Nepal.
JNMA J Nepal Med Assoc. 2022 Mar 11;60(247):274-277. doi: 10.31729/jnma.7162.
Weight of the brain is an important diagnostic criterion during autopsy. Normal variations in brain weight among various population demands for population-specific study. The aim of this study was to find the mean brain weight among autopsy cases at a tertiary care centre.
A descriptive cross-sectional study was conducted among autopsy cases in the Department of Forensic Medicine of a tertiary care hospital from July 2019 to July 2021. The approval for the study was obtained from the Institutional Review Committee (Reference number: 550/2019). Convenience sampling was done. Brain was dissected following standard autopsy technique and weight was measured by an electronic digital weighing scale (5 kg/0.01 gm). Statistical Package for the Social Sciences version 20.0 was used for data analysis. Point estimate at 95% Confidence Interval and descriptive statistics were used to express results in frequency, mean, standard deviation, range, and percentage.
The mean brain weight for 394 autopsy cases was 1272.38±144.07 grams (1258.15-1286.60 at 95% Confidence Interval). For male and female it was 1322.47±140.22 grams and 1221.27±129.55 grams respectively. Maximum attainment of brain weight was found at 21 to 30 years age group for both sexes. Out of 394 cases, 199 (50.50%) were males and 195 (49.50%) were females. In all the age groups, male brain weight was greater than that of female.
The mean weight of the brain derived from the present study is found to have variable values in comparison to other studies done under similar settings.
autopsy; brain; organ weight.
脑重是尸检时的一个重要诊断标准。不同人群的脑重存在正常差异，因此需要进行特定人群的研究。本研究旨在探讨三级保健中心尸检病例的脑重平均值。
这是一项在 2019 年 7 月至 2021 年 7 月期间在一家三级保健医院法医系进行的描述性横断面研究。该研究获得了机构审查委员会的批准（参考编号：550/2019）。采用便利抽样法。按照标准尸检技术对大脑进行解剖，然后使用电子数字称重秤（精度为 5 公斤/0.01 克）测量脑重。采用社会科学统计软件包 20.0 版进行数据分析。使用点估计值和 95%置信区间以及描述性统计来表示频率、平均值、标准差、范围和百分比。
394 例尸检病例的平均脑重为 1272.38±144.07 克（95%置信区间为 1258.15-1286.60）。男性和女性的脑重分别为 1322.47±140.22 克和 1221.27±129.55 克。男女大脑重量的最大峰值都出现在 21 至 30 岁年龄段。394 例中，男性 199 例（50.50%），女性 195 例（49.50%）。在所有年龄组中，男性的脑重均大于女性。
与其他在类似环境下进行的研究相比，本研究得出的脑重平均值存在差异。
尸检；脑；器官重量。
