Challenges in the Practice of Sexual Medicine in the Time of COVID-19 in China

BackgroundIn March 2020, the World Health Organization declared coronavirus disease 2019 (COVID-19), which is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a pandemic. Currently, data on changes in sexual behavior during the COVID-19 outbreak are limited.AimThe present study aimed to obtain a preliminary understanding of the changes in people's sexual behavior, as a result of the pandemic, and explore the context in which they manifest.MethodsA convenience sample of 270 men and 189 women who completed an online survey consisting of 12 items plus an additional question were included in the study.OutcomesThe study outcomes were obtained using a study-specific questionnaire to assess the changes in people's sexual behavior.ResultsWhile there was a wide range of individual responses, our results showed that 44% of participants reported a decrease in the number of sexual partners and about 37% of participants reported a decrease in sexual frequency. Multiple regression analysis showed that age, partner relationship, and sexual desire were closely related to sexual frequency. In addition, we found that most individuals with risky sexual experiences had a rapid reduction in risky sexual behavior.Clinical ImplicationsThe current findings contribute to identifying another potential health implication associated with the COVID-19 pandemic and report preliminary evidence of the need to provide potential interventions for the population.Strength & LimitationsThis study is the first to perform a preliminary exploration of sexual behavior during the COVID-19 outbreak. The generalizability of the results is limited, given that only a small convenience sample was used.ConclusionDuring the height of the COVID-19 outbreak, overall sexual activity, frequency, and risky behaviors declined significantly among young men and women in China.Li W, Li G, Xin C, et al. Challenges in the Practice of Sexual Medicine in the Time of COVID-19 in China. J Sex Med 2020;17:1225–1228.     

加入背景音的复合声治疗不同频率失代偿性耳鸣的疗效分析

探讨加入背景音的复合声治疗对各频率失代偿性耳鸣的治疗效果,以及耳鸣频率与治疗效果的关系。     

人群脉压分布特征的研究

目的：探讨脉压（PP）在人群的分布特征。方法：采用1997年北京城市、农村自然人群高血压普查资料（35－74岁）,共29707人,分析PP在人群不同性别、不同年龄组、不同血压水平、不同类型脑卒中分布频率（％）。结果：（1）随着血压的增高PP的分布频率也在增高,血压正常人群,PP在40－49mmHg(1mmHg=0.133kPa)频率最高,在血压I期人群中频率最高的PP在60－69mmHg,在血压Ⅱ期人群中PP70－79mmHg分布频率最高,在血压Ⅲ期人群中频率最高的PP在90－99mmHg;（2）人群缺血性卒中PP高于出血性卒中PP。（3）农村人群高血压患病年龄早于城市4．3－6．4岁,城乡人群发病年龄有显性差异（P＝0．0000）;农村人群高血压患病率明显高于城市（P＝0．0000）;农村人群平均收缩压和舒张压显高于城市（P＝0．0000）。结论：PP增宽是动脉硬化及心血管病高危的一个标志。     

电磁波的生物学窗效应

本文分别以人的肝癌细胞和动物脑组织为生物学对象，以荧光标记和同位素示踪为实验方法，以激光扫描共聚焦显微镜和液体闪烁计数器为检测仪器，以荧光强度和放射性强度为检测Ca^2 量的特征指标，进行了电磁波生物学非热效应的典型代表--电磁波生物学窗效应的实验研究。两种实验均表明了电磁波生物学频率窗效应和强度窗效应的存在且有相同的窗频率。基于本文的实验研究并结合其他文献的结果，可发现电磁波生物学窗效应具有以下基本特征：(1)不同生物组织都会在15—16Hz左右存在一个频率窗；(2)生物学窗效应既可由ELF(极低频)正弦(调制波)振幅调制的高频电磁波(载波)产生，又可由ELF连续波或ELF脉冲波产生，只是前者的频率窗只体现在调制波频率上而不体现在载波频率上，而且，前者的窗效应频率与后者的窗效应频率是相同的；(3)频率窗分布的一般规律为fn＝(2n 1)fc，式中，n＝0，1，2…，fn为第n个窗频率，fc为基频即最低的那个窗频率。实验研究还表明，这-分布规律在0—135Hz范围内是正确的，且基频fc≈15—16Hz；(4)只有特定频率参数与特定强度参数恰当组合的电磁波才能产生生物学窗效应，或者说，窗效应是电磁波频率和强度的二元函数。     

亚洲健康人群CYP2C79等位基因发生率的合并分析

目的 对亚洲人群CYP2C19等位基因发生率的相关文献进行合并分析,为个体化药物治疗和药物基因组学研究提供依据。方法 计算机检索PubMed、EMbase、Cochrane图书馆、CNKI、WanFang Data、VIP和CBM等数据库,纳入CYP2C19等位基因发生率的相关文献。按照纳入与排除标准筛选文献、提取数据后进行合并分析。结果 共纳入41篇文献,包含17个国家9 841例健康亚洲人的CYP2C19等位基因的信息。按东亚（中国、韩国和日本）、东南亚（越南、泰国、马来西亚、新加坡、缅甸、印度尼西亚和菲律宾）、南亚（印度）和西亚（巴勒斯坦、黎巴嫩、沙特阿拉伯、土耳其、伊朗和约旦）分区域进行分析,主要研究结果如下：CYP2C19＊1、＊2和＊3等位基因的发生率,中国人群（n=4 170）分别为61.3%、32.1%和6.6%;东亚人群（n=5 879）分别为61.0%、31.2%和7.8%;东南亚人群（n=1 985）分别为67.6%、28.8%和3.7%;南亚人群（n=679）分别为64.0%、35.2%和0.8%;西亚人群（n=1 298）分别为87.3%、12.1% 和0.6%;亚洲以上四个地区17个国家9 841例CYP2C19＊1、＊2和＊3等位基因的总发生率分别为66.0%、28.4%和5.5%。结论 CYP2C19各等位基因的发生率在我国及亚洲不同区域之间均存在较大差异（P〈0.05）,且遗传变异也会受地域环境的影响。     

不同频率的电针配合推拿治疗腰椎间盘突出症疗效观察

目的 通过观察不同频率电针治疗腰突症的临床疗效,探寻一种更为有效的电针治疗腰突症的最佳参数。方法将120例腰腿疼痛评分0～10数字分级法（NRS）评分4分以上（含4分）的腰突症患者随机分为电针A组（连续波频率为4Hz）、电针B组（连续波频率为1Hz）、电针C组（连续波频率为30Hz）,每组40例,对治疗前后体征及疼痛的临床疗效进行对照观察。结果电针A组与其他两组比较,在治疗疗程上差异具有统计学意义（P＜0．01）。结论采用频率为4Hz的电针配合推拿治疗腰突症能明显缩短疗程。     

单刺十七椎对原发性痛经患者止痛作用时效规律的观察

目的观察单刺十七椎对原发性痛经患者止痛作用的时效规律。方法单刺十七椎,留针30min,分别记录针刺前即时和留针5min、10min、20min、30min及起针后30min、60min、120min的VAS读值,然后进行统计分析。结果留针30min条件下,单刺十七椎的止痛作用持续加强,直至起针;起针50min后,针刺止痛作用衰减为接近峰值的一半。结论单独针刺十七椎,留针30min的止痛作用优于留针短于30min的止痛效果。针刺十七椎时,留针30min条件下的半衰期较短,对于痛经持续时间在1d左右或更长的患者,针刺频次以每天针刺2次为宜。     

Serotonin transporter gene polymorphisms and treatment-resistant depression

Major Depression Disorder (MDD) is a serious mental illness that is one of the most disabling diseases worldwide. In addition, approximately 15% of depression patients are defined treatment-resistant (TRD). Preclinical and genetic studies show that serotonin modulation dysfunction exists in patients with TRD. Some polymorphisms in the promoter region of the serotonin transporter gene (SLC6A4) are likely to be involved in the pathogenesis/treatment of MDD; however, no data are available concerning TRD.     

High‐frequency ventilation with the Dräger Babylog 8000plus: measuring the delivered frequency

Background: Ventilator frequency is one of the determinants of tidal volume delivery during high‐frequency ventilation. Clinicians increasingly use data on ventilator displays to inform their decisions. Aim: To measure the frequencies delivered by the Dräger Babylog 8000plus ventilator when used in high‐frequency mode. Methods: Ventilator waveforms using a test lung were recorded at the full range of settings 5–20 Hz using Spectra software at 1000 Hz. The changes in frequency produced by a 1‐ Hz change in set frequency were calculated. Actual and displayed frequencies were compared. Results: For settings up to 12 Hz, median (range) difference between set and delivered frequencies was 0 (?0.4 to +0.1) Hz. Above 12 Hz, delivered frequency varied by ?0.3 (?1.9 to +0.3) Hz. For 1‐ Hz changes in frequency settings, in the range 5–12 Hz, 1‐ Hz changes produced a change in delivered frequency of 1.0 (0.6–1.4) Hz. Above 12 Hz, the corresponding changes were 0.7 (0–2.9) Hz. The ventilator displays the set frequency during operation rather than the delivered frequency. Conclusion: At 12 Hz and below, the differences between set and delivered frequencies were relatively small compared with those at 13 Hz and higher. Above 13 Hz, the difference between set and delivered frequencies was up to 2.9 Hz. Some frequency setting changes did not result in a change in delivered frequency.