When the pulse exceeds 100 beats and is like a thin line when pressed, it is called a rapid pulse. Tachycardia is mainly caused by tachycardia, which is a concept in Traditional Chinese Medicine (TCM), and is the main cause of qi and blood deficiencies, and all kinds of deficiency and labor injury. Due to illnesses and qi deficiency, the blood is unable to run, and blood deficiency cannot fill the pulse channel, so the pulse is small and weak. Fine veins can also be seen when the vein channels are blocked by dampness. Prevention of fine pulse due to tachycardia: 1. During chronic treatment, medication may control recurrence by acting directly on the refractory loop or by inhibiting triggers such as spontaneous precession. Indications for pharmacologic chronic treatment include patients who have frequent episodes, who are disruptive to normal life, or who have severe symptoms and who are unwilling or unable to undergo catheter-based radiofrequency ablation. For patients with episodic, short-lived attacks, or mild symptoms, medication may not be necessary, or medication may be given when needed for tachycardia episodes. 2, the inhibitory effect of drugs on refractoriness can be offset by sympathetic excitation, and the effect of drugs nearly disappears during physical activity and anxiety. Therefore, in daily life and work to avoid mental tension or excessive fatigue, to do regular life, regular living, spiritual optimism, emotional stability can reduce the recurrence of this disease. Nursing methods for tachycardia-induced pulse tachycardia: 1. The P-wave morphology of tachycardia is generally consistent with that of atrial pre-systole seen during the interictal period. The ectopic pacing point is often located in the upper atrium, and the agitation proceeds from top to bottom for depolarization, with the P wave upright in leads II, III, and aVF. However, the P-wave morphology may not be consistent, and may change with the change of intra-atrial refractory efferent site, and the order of atrial depolarization may also vary from person to person. If the ectopic pacing point originates from different parts of the atrium, the P-wave morphology will also be different, for example, if the IART originates from the left atrium, the P-wave of aVL lead is negative or isoelectric; if the IART originates from the superior vena cava, the P-wave of the aVL lead is negative, but the P-wave of its lead I is positive; if the IART originates from the superior vena cava, the P-wave of its lead I is positive. In triangular IART, the P waves were positive in the aVL and I leads, and negative in the II, III, and aVF leads (individually, the II lead was negative-positive bidirectional). In addition, the morphology and electrical axis of the P wave depend on the position of the foldback loop. For example, right atrial IART shows right-to-left transverse axes (PV1-negative, PV5-positive); left atrial IART shows left-to-right transverse axes (PV1-positive, PV5-negative); and frontal axes running from the top to the bottom (PII, PIII, PaVF-positive) suggest an origin in the upper atrium; frontal axes running from the bottom to the top (PII, PIII, PaVF-negative) suggest an origin in the lower atrium. If the frontal axes are from the bottom up (PII, PIII, PaVF negative), it suggests that the origin is from the lower atrium. The atrial rate can also be 160-200 beats/min during IART. 3. IART is mostly paroxysmal, but there are also chronic persistent processes, but they are rare. The interval between tachycardia episodes is variable, and can be a few seconds, hours, days, weeks or even years.