Detecting Heart Blockage in a Patient

Second degree heart block (or second-degree atrioventricular (AV) block), type II, is also known as Mobitz II. In this rhythm, the PR and RR intervals are constant and until some atrial impulses fail to reach the ventricles. In type II, the PR interval remains unchanged prior to the P wave that suddenly failed to conduct to the ventricles. There can also be a widening of the QRS complex.

The heart chambers have four valves categorized as atrioventricular or semilunar valves (Elisha, 2014). The atrioventricular valves include the tricuspid and mitral valves (Elisha, 2014). The semilunar valves include the aortic and pulmonary valves (Elisha, 2014). The tricuspid valve, located within the right atrioventricular orifice, lies between the right atrium (RA) and the right ventricle (RV) (Elisha, 2014). The mitral valve situated in the left atrioventricular orifice between the left atrium (LA) and left

The heart contains four chambers, the right atrium, the left atrium, the right ventricle and the left ventricle. The right atrium is located in the upper right corner of the heart, above the right ventricle whereas the left atrium which is positioned in the left side of the heart separated from the right atrium and the left atrium. The atria has a very interesting texture, it has a thin, less muscular wall and is smaller in contrast to the ventricles. The atrium is joined to the veins that transport blood out to the heart and is categorized under the four hollow chambers of the heart. The left ventricle is situated in the bottom left portion of the heart. It lies under the left atrium separated by the mitral valve while the right ventricle is located in the lower right portion of the heart below the right atrium and opposite of the left ventricle. The aorta is the largest artery in the body; it begins at the top of the left ventricle. The right pulmonary artery begins at the base of the heart’s right ventricle. The left pulmonary artery passes horizontally in front of the descending aorta and left bronchus. The heart consists of four types of valves, the tricuspid valve located between the right atrium and the left ventricle, the pulmonary valve situated between the right ventricle and the pulmonary artery, the mitral valve positioned among the left atrium and the left ventricle and finally the aortic valve located between the left ventricle and the

A heart is a vital organ in a human being, which is situated in the centre of the chest and behind the breastbone. It is a muscular organ that pumps the blood into the human body. It is the approximately the size of a fist. The heart consists of a special muscle called cardiac muscle. Cardiac muscle does not get tired like the muscles in your legs and arms, but instead works continuously by responding to signals to an area of the heart called the pacemaker. (Pearson 2011, p.100-111). Even though the heart is the most vitalist organ in the human body, which carries rich nutrients and oxygen, defects can occur. The most common defect that occurs is a congenital heart defect, which is commonly known as a hole in the

The heart is divided into four chambers that are connected together by the valves of the heart, the lower two chambers in the heart are called ventricles and are separated by a septum into the left and the right ventricle. The right ventricle is the ventricle that receives blood from the right atrium and pumps it to the main artery. Any oxygen-poor blood picks up oxygen and it is then returned to the heart by the pulmonary veins. The left

First degree atrioventricular block is a type of heart block. The heartbeat is a coordinated contraction between the upper and lower chambers of the heart. This coordinated contraction happens because of an electrical impulse that is sent from the upper chambers of the heart to the lower chambers of the heart. The electrical impulse causes the heart to beat and pump blood. Normally, this electrical impulse is transmitted without delay. A first degree heart block is a slight delay of this electrical impulse transmission from the upper chambers of the heart to the lower chambers of the heart.

The Right Atrium, as it is called, receives blood from the upper and lower body through the superior vena cava and the inferior vena cava, respectively, and from the heart muscle itself through the coronary sinus. The right atrium is the larger of the two atria, having very thin walls. The right atrium opens into the right ventricle through the right atrioventicular valve(tricuspid), which only allows the blood to flow from the atria into the ventricle, but not in the reverse direction. The right ventricle pumps the blood to the lungs to be reoxygenated. The left atrium receives blood from the lungs via the four pulmonary veins. It is smaller than the right atrium, but has thicker walls. The valve between the left atrium and the left ventricle, the left atrioventicular valve(bicuspid), is smaller than the tricuspid. It opens into the left ventricle and again is a one way valve. The left ventricle pumps the blood throughout the body. It is the Aorta, the largest artery in the body, which originates from the left ventricle.

A small bundle of specialized cells located in the right atrium of the heart called the Sinus node is where the impulse of the heart starts. The electrical activity spreads through the walls of the atria and causes them to contract. This forces blood into the ventricles which sets the rate and rhythm of the heartbeat. A pacemaker is needed to maintain an adequate heart rate, either because the heart’s natural pacemaker – sinus node – is not fast enough or there is a block in the heart’s conduction system.

The cardiac muscle, more commonly known as the heart muscle, is quite different from the more familiar know skeletal muscle. Unlike skeletal muscle, cardiac muscle is able to conduct its own electrical impulses allowing it to contract and relax spontaneously without being told to by the brain or any other organ (Marieb, Mitchell, p. 512). This is due to the constant leakage of sodium ions into the mainly potassium filled cells which then eventually lead to action potentials causing the heart to beat rhythmically (Mariev, Mitchell, p.512) this rhythm is more commonly referred to as one’s heartbeat.

For bradycardia generally an artificial pacemaker is used which implanted near your heart so when the heart slows down or stops pacemaker generates impulses in order to stimulate the heart.

The heart has its electrical conducting system that controls the rate and the rhythm. Electrical signals or impulses originate from the sinoatrial (SA) node and travel down an electrical pathway into the ventricles causing an organized atrial-ventricular contraction. The point of where electrical signals/impulses originated is known as the natural heart pacemaker. The electrical signal must travel down a specific pathway to the ventricles for the heart to beat properly. However, in some cases, the sinoatrial nodes may be defected causing the heart to beat too fast, too slow or irregular. There may have been a blockage in the heart electrical pathways. If these were ever the cases, a device might need to the put in place to help regulate the heart rate and

The heart has valves to prevent blood from flowing backs into the heart, there are two types of valves, 1. the atrioventricular valves called the tricuspid valve and the mitral valve or bicuspid valve.

The heart is in the center of the cardio vascular system and is like any other muscle in body. It is a four chambered organ which purpose is to pump blood throughout the body. The heart is located in between the lungs and behind the left side of the sternum. The pericardium is a sac like membrane that surrounds the heart. The outer layer is surrounding the roots of the major blood vessels of the heart and is attached by the diaphragm and numerous other parts of the body. The two layers of the membrane are not stuck to each other and have a fluid that is separating the two, allowing the heart move every time it beats ([5] McKinley, M. P., O'Loughlin, V. D. 2016). The anatomical features in order for normal function of the heart are as follows: The Right side which receives deoxygenated blood from the body and pumps it to the lungs and the Left side which receives oxygenated blood from the lungs and pumps it to the body. Each side has an atrium and ventricle. Great vessels which are the arteries that are transporting blood away from the heart while the veins transport blood towards the heart. And two valves which are the Atrioventricular valves (AV), which are between the atrium and ventricle and the Semilunar valves (SV) which are between a ventricle and an arterial trunk. The sides of the heart go through two circuits: the pulmonary circulation and the systemic circulation. The heart does not only pump blood to the body but, to itself as well through the

The heart is one of the most important organs in the human body. It circulates blood to

In mammals, there are many different systems that all work together in the body in order to create life; one of those systems that holds a great portion of responsibility it the circulation system. In the circulation systematic, the heart is the main component and worker, which for mammals comes in the form of a dual pump that moves blood throughout the entire body. While moving blood throughout the body the heart also helps with oxygenating the blood, by pushing it through the lungs. The heart is composed of 2 atrial chambers and 2 ventricles, left and right. When blood enters the atrial chambers it is at low pressure and when it leaves the ventricles it is at high pressure, so that it has the force to be pushed throughout the body. The general pathway that blood travels is it enters the right atrium, and then travels to the right ventricle where it is forced into the lungs to be oxygenated. The blood then leaves the lungs and travels back to the left atrium, and then it goes to the left ventricle where it is then forces to the rest of the body. There are several different factors that play a role in the overall rate that the heart beats, such as central nervous system, more specifically the parasympathetic and sympathetic nerves, and the pacemaker cells. The pacemaker cells, also referred to as sinoatrial node, which sends out action potentials that contract the ventricles and spreads to the atrioventricular node to lead to the contraction of the atrium. Electrical