Does sildenafil cause myocardial infarction or sudden cardiac death?
伟哥会引起心肌梗死或心源性猝死吗？
He said sildenafil worked at least as well as melatonin, a jet-lag treatment.
他还认为昔多芬的作用至少和目前用于治疗时差综合症的退黑激素的作用类似。
Objective To explore the effect of sildenafil on the hemodynamics in migrants at high altitude.
目的探讨西地那非对高原移居青年血流动力学的影响。
OBJECTIVE To identify sildenafil citrate illegally mixed in traditional Chinese medicine(TCM)preparations.
目的：建立中药制剂普乐安片中微量镉的测定方法。
The cumulative defibrillation energy was lower in the sildenafil group than that in the saline group(P<0.05).
西地那非组累积除颤能量低于盐水组（P＜0.05）。
In the study, researchers administered small doses of sildenafil to hamsters before adjusting the cycles of light and dark they lived in.
在这项研究中，研究者在调整仓鼠所处环境的白昼规律前，给其小剂量的昔多芬。
Vardenafil is a potent and highly selective phosphodiesterase type 5 (PDE5) inhibitor with a potency about 10-fold higher than sildenafil.
伐地那非是一种强效、高选择性的5型磷酸二酯酶(PDE5)抑制剂，对PDE5的抑制作用约为西地那非的10倍。
The great majority of these studies found that sildenafil is not an extra risk factor for an acute coronary syndrome or sudden cardiac death.
这些研究中的大多数都认为，万艾可不是急性冠脉综合征或心源性猝死的一个额外危险因素。
According to Brazilian researchers, taking Viagra (sildenafil) at bedtime may aggravate breathing problems in patients with severe obstructive sleep apnea.
根据巴西研究者的研究，睡前服用伟哥可能会加重患有严重阻塞性睡眠呼吸暂停病人的呼吸问题。
Results The levels of catecholamine and lactate in the sildenafil group were lower than those in saline group at all different intervals(P<0.05 or P<0.01).
结果 除基础状态外，西地那非组心肌组织液中多巴胺、去甲肾上腺素、肾上腺素与乳酸水平均低于盐水组（P＜0.05或P＜0.01）。
A study of cyclists who took sildenafil citrate (the chemical name for Viagra) while racing at altitude found that it reduced their time over 6km by 15 per cent.
有项高海拔自行车赛的试验，应用血管扩张剂以后(万艾可的化学名)，运动员每6公里可以缩短15%的时间。
Results The results showed that daily intraperitoneal administration of sildenafil per se for 10 days was without noticeable adverse effects on survival or myocardium.
结果：实验表明每天腹腔内注射西地那非并持续10天，未对动物存活率和心肌细胞产生不良影响。
The men were randomly assigned to receive sildenafil or a placebo before they participated in an all-night sleep study, which included at least 7 hours of recording time.
这些男性在参与整夜睡眠研究之前被随机分组接受昔多芬或安慰剂。该项研究包括至少七个小时的记录。
In conclusion, these data suggest that sildenafil has a clinically relevant dose-response relationship with a significant improvement in 6-MWD only at a dose of 50mg tid.
结论，这些数据显示，万艾可有与临床相关的量-效关系，在50毫克日三次剂量下，6-MWD有显著改善。
In conclusion, these data suggest that sildenafil has a clinically relevant dose-response relationship with a significant improvement in 6-MWD only at a dose of 50mg tid.
结论，这些数据显示，万艾可有与临床相关的量-效关系，在50毫克日三次剂量下，6-MWD有显著改善。
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