Diagnosis. 1  Sinus tachycardia is physiologic or appropriate when a reasonable stimulus, such as the catecholamine surge associated with fright, stress, or physical activity, provokes the tachycardia. It is identical to a normal sinus rhythm except for its faster rate (>100 beats per minute in adults). Sinus tachycardia is considered by most sources to be an SVT. Sinoatrial node reentrant tachycardia (SANRT) is caused by a reentry circuit localised to the SA node, resulting in a P-wave of normal shape and size that falls before a regular, narrow QRS complex.
card verification value (CVV) Card verification value (CVV) is a combination of features used in credit, debit and automated teller machine (ATM) cards for the purpose of establishing the owner's identity and minimizing the risk of fraud. The CVV is also known as the card verification code (CVC) or card security code (CSC). Download this free guide.
Also known as the Cardholder Verification Value (CVV) or Customer Identification Number (CID/4DBC), these three or four digit numbers help ensure that the physical card is in the cardholders possession while donating or shopping online helping to prevent unauthorized or fraudulent use.