男性，48岁。4年前开始心悸，每年发作4～5次，发作时感心悸胸闷，持续约30分钟可自然终止，有时可持续3～6小时不等，现因胸闷心慌来诊。查体：血压95/60mmHg，第一心音强弱不等，心律不齐，心率116次／分，脉搏不齐，102次／分。肝脏增大，双下肢凹陷性水肿。
根据上述提供信息，考虑其心律失常的诊断为（）
A.心绞痛
B.心室性期外收缩
C.三度房室传导阻滞
D.室上性心动过速
E.阵发性心房颤动
F.频发房早
参考答案：E
There are a number of advantages when it comes to living alone. However, it also comes with a few safety concerns. You still never know who will be around the corner. Don’t become another victim; be sure to follow our tips. 1. All doors should be kept locked. Always keep your doors locked when you are in your apartment or dorm. Make sure the doors are closed behind you when you come into the building and never leave your room unlocked, even when you are in it. There’s always a chance that someone might sneak in while you are unaware. Always try to remember to close doors behind you to ensure your safety. 2. Don’t lose your keys. Even if you do everything you can to keep the doors locked, criminals might still be able to come into your house with a key. Always know where your keys are to prevent this. Never put them down in a public place or give them to friends. Also, before you bring your car into the repair shop, take off the house keys. 3. When it comes to safety, standing up for yourself is important. If you aren’t getting all the security features you want, don’t be afraid to ask. If your lighting situation is less than ideal, discuss this with your supervisor or landlord. Talk to the campus security organization if you think a security phone near your dorm is a good idea. Request that the building employ someone to monitor those entering and leaving the building. You should feel safe where you reside (居住于), so stand up for your rights. 4. Be careful. You still might find yourself in a potentially dangerous situation. Check your peephole (窥视孔) before letting anyone in. Whenever you witness something around your building that makes you uncomfortable or suspicious just dial 911. It is a good idea to always walk with a friend instead of alone. Become familiar with people who live in the building, so you can keep track of anyone that is a stranger.
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