CA-blockade of the 2nd degree of the 1st type
author: cardiologist Makarenkova T.Yu.
Sinoatrial blockade is a pathology of the conduction system of the heart, characterized by impaired conduction of the pulse going from the sinus node to the atria.
The cause of such a violation of the rhythm of cardiac contractions are atherosclerotic lesions of the heart vessels (right coronary artery), inflammatory processes in the right atrium, followed by replacement of the site of inflammation with connective tissue, intoxication with antiarrhythmic drugs (cardiac glycosides, B blockers, etc.), myocarditis, myocardial dystrophy of metabolic-dystrophic genesis, congenital heart diseases, hypothyroidism.
As a result, the following pathological changes take place in the conduction system of the heart:
Sinoatrial blockade of 2nd degree I type is characterized by blocking one or several sinus pulses in a row.
Clinically, the sinoatrial block of degree 2 is manifested by syncope (Morgagni-Adams-Stokes syndrome). Such faints are characterized by the absence of seizures and any aura, a feeling of cardiac arrest or a pronounced decrease in its rhythm; possible drop in blood pressure with cooling of the skin, cold sweat. Syncope can be provoked by a sharp turn of the head, a cough, wearing a tight collar. Basically, they stop on their own, however in far-reaching cases, resuscitation measures may be necessary.
Also disturbed by a rare pulse, interruptions in the heart, precocious condition with the appearance of noise in the ears and severe weakness, nausea, shortness of breath while eating, muscle weakness.
The development of bradycardia is often accompanied by a progressive course of heart failure, coronary pathology, and discirculatory encephalopathy (memory dips, irritability, insomnia, increased dizziness, paresis, "swallowing" words).
All patients with complaints of frequent dizziness, fainting, slowing of the rhythm with a sense of irregularity in the work of the heart pass mandatory examination with a cardiologist. At physical examination bradycardia, arrhythmic cardiac contractions, changes in the figures of arterial pressure are detected.
To confirm the diagnosis of CA blockade, use ECG, XM - ECG, stress tests (treadmill test), CHPS / EFI. Do not confuse CA-blockade with atrioventricular blockade of the 2nd degree .
First of all, they eliminate the cause that caused the sinoatrial blockade. All drugs that contribute to conduction disruption are abolished. With moderate bradycardia (41 - 60 bpm), appoint theopek, euphyllin, and belloid. In urgent cases (asystole, attack of Morgani-Adams-Stokes) resuscitation measures are carried out.
With bradycardia less than 41 ud. in minutes, Morganya-Adams-Stokes attacks, high uncorrected blood pressure figures, CA with rhythm disturbances requiring the appointment of antiarrhythmics that suppress the sinus node, the installation of a permanent pacemaker is shown.
The prognosis for sinoatrial blockade depends on the cause of the disease, the clinical picture, the age of the patient, the concomitant pathology. Correctly selected drug therapy, or an EKS setup improves the prognosis, improves the quality of life, but the absence of any treatment can cause attacks of Morgani - Adams - Stokes and sudden death. Also read the CA-blockade of the 2nd degree of the 2nd type .
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author: doctor Pyataeva Margarita
The attending physician appointed you an electrocardiogram: a squeaking apparatus, a whole heap of wires with suction cups and a long tape covered with mysterious curves, as a result. What do these teeth and knolls say?
In a nutshell, unfortunately, the technique of decoding the ECG will not tell. However, it is possible and necessary to understand the causes and significance of those changes that the specialist will identify. For example, if it is an inconvenient abbreviation - PBSCH, also known as a complete blockade of the right leg of the bundle.
author: doctor Vasil'tsov AG
The heart muscle has special properties in comparison with other organs of the human body. One of these properties is the conductivity of impulses that arise in special structures of cardiac tissue. Sometimes it happens that the impulse is not transmitted by the cells of the heart. Such states are called blockades.
Author: ambulance doctor Deryushev A.N.
Arrhythmia is the wrong rhythm of the heart, which can be too fast - more than eighty beats per minute (tachycardia) or too slow - less than sixty beats per minute (bradycardia).
author: doctor Pyataeva Margarita
Despite a huge number of methods for diagnosing heart disease, one of the most accessible and informative studies is still electrocardiography. The ECG makes it possible to detect not only and not so much myocardial infarction, as well as changes or disturbances in the conductivity of the electrical pulse in the heart, and not always these changes are accompanied by complaints from the patient. An example of such a pathology is atrioventricular blockade of the 2nd degree.
author: cardiologist Merter M.V.
One of the frequent violations of the impulse is the so-called sinoatrial, or CA blockade. It should be noted that CA blockade occurs in 0.17 - 2.4% of the population, more often in protection after 55 - 60 years and somewhat more often in women than men.
author: doctor Tatintsyan VA
Atrioventricular blockade of degree II or cardiac blockade of grade II is characterized by impaired, delayed or interrupted atrial pulse transmission through the atrioventricular node to the ventricles.
author: cardiologist Makarenkova T.Yu.
The blockade of the right bundle of the bundle is a pathological abnormality in the work of the conduction system of the heart, in which the electrical impulse going from the atrioventricular node to the right ventricle is slowed or absent. There are complete and partial blockade of the right leg of the village of Gis.
author: doctor Subbota AA
The bundle of the Hyis is a system that provides the delivery of an electrical impulse to the cells of the heart, as a result of which these cells contract. The correct operation of all structures of the bundle of the Hyis provides an organized reduction of all cardiac cells, and the heart contracts as a solid organ.
author: doctor Li V.V.
The bundle of His can be described as a collection of cardiac cells, which is divided into two parts (legs): the right and left. It is located behind the atrioventricular node. The left leg has its branches, which are connected by an anastomosis. The legs, reaching the myocardium of the ventricles, are divided into bundles of the leading cardiac cells, also called Purkinje fibers.
author: ambulance doctor Saturday AA
Each of us periodically with physical exertion or after them, sometimes with complete rest during sleep, there are sensations in the heart area in the form of interruptions, fading, rapid heartbeat. This does not necessarily mean that there is any heart disease. Even in healthy people, there are irregularities in the heart, but this happens rarely and, as a rule, does not last long and passes by itself.
author: doctor Mikhailovskaya Oksana
Wolff-Parkinson-White syndrome is a condition characterized by a premature contraction of one of the ventricles of the heart, a tendency for supraventricular tachycardia (rapid heart rate), and the appearance of atrial fibrillation and flutter. This is due to the fact that in the heart there are additional nerve conduction beams that can directly conduct excitation from the atria to the ventricles.
author: doctor Subbota AA
Conduction through the sinoatrial connection in the heart can be disrupted for various reasons. It can be of several degrees, each of which has a different effect on the patient's well-being. The lightest degree of this blockade is the 1st degree. This is the initial and minimal damage to the conduction system in the heart, namely, its sinoatrial connection.