The Most Poisonous Preservative: Nitrite
Nitrosamine
Nitrite may seem innocuous at room temperature, but just a bit of heat can transform it into a carcinogen: nitrosamine. It is often found in meats where the transformations take place.
Processed Meats
Processed meats such as Chinese sausages, jerky, smoked meats, ham, Frankfurt sausages, hotdogs, minced beef and luncheon meats all contain nitrites.
High Cancer Risk
Consuming 30 grams of processed meats each day will cause a 38% increase in the risk of gastric cancer. Swedish Scientific Study
Poisoning Symptoms
Lethargy, tachycardia, central nervous system degeneration, headaches, dizziness, fatigue, dyspnea, nausea, loss of consciousness. Serious cases include comas, epilepsy, or even death.
最毒的防腐剂--亚硝酸盐
亚硝酸盐
平时它看起来并不起眼,但只要它一加热,就会“摇身一变”,变成高致癌性的亚硝胺(Nitrosamine)尤其肉类是它经常“变身”的地方。
加工肉类
腌制肉类如腊肠、肉干、熏肉、火腿、法兰克福香肠、热狗、牛肉碎、午餐肉等,都含有亚硝酸盐。
患癌机率高
瑞典科学家研究:每天30克的加工肉类,患胃癌风险增至38%。
中毒症状
无力、心跳快速、中枢神经系统衰退,头痛、晕眩、疲劳感、呼吸困难、恶心轻度失去意识、严重甚至会休克、颤动、昏迷或死亡。
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tachycardia cause 在 臨床筆記 Facebook 的最佳解答
ECG Diagnosis: Atrial tachycardia
Circulation ECG Challenge Response! Regarding the 25 year old woman with palpitations:
Diagnosis: Atrial tachycardia
The rhythm is regular, except for one long RR interval. The initial rate is 140 bpm and is followed by several complexes at a rate of 100 bpm. The QRS complex has a normal duration (0.08 sec) and morphology. The axis is normal between 0° and +90° (positive QRS complex in lead I and aVF). The QT/QTc intervals are normal (320/430 msec). There are no P waves before the first 10 QRS complexes and last 6 QRS complexes; there however P waves (+) noted after each of these QRS complexes with a long RP interval (└┘) and short PR interval (┌┐). The P waves are negative in leads II and aVF. This is a long RP tachycardia, There is a P wave before each of the next 4 QRS complexes (i.e. complexes 11-14) (*) with a stable PR interval (0.16 sec). This is a normal sinus rhythm. The etiologies for a long RP tachycardia include a sinus tachycardia (no the cause as the P waves are negative in leads II and aVF), an ectopic junctional tachycardia, atrial tachycardia, atrial flutter with 2:1 AV block or conduction, atypical atrioventricular nodal reentrant tachycardia (i.e. fast-slow), or an atrioventricular reentrant tachycardia. The arrhythmia terminates abruptly without a P wave (↑). This is the way atrial arrhythmias terminate. Therefore this is most likely atrial tachycardia. As there is only one P wave seen this is not atrial flutter. The P wave is different from the sinus P wave and is negative in leads II and aVF) and this is not sinus tachycardia. Arrhythmias generated within or require the AV node terminate with a non conducted P wave.
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