英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
clumps查看　clumps　在百度字典中的解释百度英翻中〔查看〕
clumps查看　clumps　在Google字典中的解释Google英翻中〔查看〕
clumps查看　clumps　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Premature Atrial Contractions (PACs) - Cleveland Clinic
    PACs occur when your upper chambers contract prematurely from an area different from the sinus node and briefly interrupt your heart’s normal rhythm When the premature, or early, signal tells your heart to contract, there may not be much blood in your heart at that moment
  • How Serious Are Premature Atrial Contractions (PACs)?
    PACs are the most common variety of cardiac arrhythmias This occurs when the heart beats irregularly–too slowly, or too fast The heart's rhythm is controlled by a tiny structure called the sinus node, which is located near the top of the heart's right atrium
  • What Are Premature Atrial Contractions? - WebMD
    If you feel like your heart occasionally skips a beat, you could actually be having an extra heartbeat One condition that causes this extra beat is premature atrial contractions
  • Premature Contractions ‒ PACs and PVCs - American Heart Association
    Premature beats that start in your heart’s upper chambers are premature atrial contractions, or PACs Those that start in the lower chambers are premature ventricular contractions, or PVCs Watch an animation of a normal heartbeat They can happen to anyone but are more often found in older adults
  • Premature atrial contraction - Wikipedia
    A premature atrial contraction (PAC), also known as atrial premature complex (APC) or atrial premature beat (APB), is a common arrhythmia characterized by premature heartbeats originating in the atria
  • When Should I Worry About Premature Atrial Contractions?
    Premature atrial contractions occur when the heart’s electrical signals cause the atria to contract prematurely, disrupting the normal rhythm of the heartbeat These contractions can feel like a fluttering or pounding sensation in the chest and are often described as skipped beats
  • Premature atrial contraction (premature atrial beat complex): ECG and . . .
    Although atrial premature beats are harmless, they can trigger sustained supraventricular tachyarrhythmias (e g atrial fibrillation, AVNRT, AVRT, etc ) A premature atrial contraction occurs when an ectopic focus in the atria discharges before the next sinus impulse
  • Premature Atrial Contractions - What You Need to Know
    Treatment What are premature atrial contractions (PACs)? PACs are an interruption in your heart rhythm PACs happen when your heart gets an early signal to pump PACs are common and usually have no cause Most people have skipped heartbeats from time to time Follow up with your healthcare provider so the cause of your PAC can be diagnosed and
  • Premature Atrial Contraction | Fact Sheets | Yale Medicine
    A premature atrial contraction is an extra heartbeat that occurs occasionally, often for no known reason, momentarily throwing off the heart’s normal rhythm This type of extra heartbeat originates in one of the upper chambers of the heart, known as the atria
  • Premature Atrial Complex (PAC) • LITFL • ECG Library Diagnosis
    A premature atrial complex (PAC) is a premature beat arising from ectopic pacemaking tissue within the atria There is an abnormal P wave, usually followed by a normal QRS complex AKA: Atrial ectopics, atrial extrasystoles, atrial premature beats, atrial premature depolarisations





中文字典-英文字典  2005-2009