Electrical conduction system of the heart Essays

The human body is a compound and highly organised system which is formed of unique cells that act as a team to carry out the specific functions necessary for maintaining our daily life. Each organ in the human body is exceptionally vital. They protect us from harmful foreign objects such as bacteria and viruses. They let us do things like breathing, talking, movements, and our ability to smell. The circulatory system dispenses oxygen, carbon dioxide, nutrients, waste products, hormones and heat

“An average heart has four chambers; two upper, called the atria and two lower, called the ventricles. The right side of the heart receives blood that is returning from the body. This oxygen-lacking blood arrives in the right atrium, where it is pumped into the right ventricle. The right ventricle sends the blood to the lungs, where it is picks up plenty of oxygen. This oxygen-rich blood then enters the left atrium and is pumped into the left ventricle, which pumps blood through the aorta to all

by policy-makers (in both high and low middle income countries) is to know which quality strategies would have the greatest impact on the outcomes delivered by their health systems. There are two main reasons for promoting focus on quality in health systems at this time. (a) Firstly, even with the well-developed health systems, there are clear evidences that quality remains a serious concern, with expected outcomes not predictably achieved. Also, there are wide

too fast, or too slow. Arrhythmias are due to problems with the electrical conduction system of the heart. The most common forms of arrhythmia observed is either, tachycardia (A heartbeat that is too fast - above 100 beats per minute in adults) or bradycardia (A heartbeat that is too slow - below 60 beats per minute). While most types of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. Others may result in cardiac arrest. There are four main

undergoing certain procedures and taking certain medicine. With atrial fibrillation the medicine can be taken to aid with controlling the heart rate and preventing blood clots. The medication that can be used for this is amiodarone and Propafenone because they are antiarrhythmic. Antiarrhythmic drugs are use help with arrhythmias (irregular heartbeats) in the heart. Amiodarone is a group three antiarrhythmic drug which means that it works by blocking the potassium channels which then slows down the

maintain homeostasis. The circulatory system consisting of the heart and vessels is of vital importance. The heart pumps blood and other nutrients through the vessels to all of the other organs in the body. The heart, vessels, lungs all work together to maintain homeostasis. With out the circulatory system, no other organ could survive. Conduction of the heart Carried out by electrical impulses from the heart muscle( the myocardium) which causes the heart to beat. This beat is caused by the sinoatrial

If we are exploring the anatomy of the heart, then it might make sense to begin exploring the outside, or superficial structures first and work our way in from there. With that said then, we begin with the most superficial layer - the pericardium. The pericardium is essentially a multi-layered membranous sac that surrounds and protects the heart. The pericardium does this by maintaining the hearts position within the mediastinum and preventing the heart from over stretching during vigorous workloads

is used to reflect underlying heart conditions by measuring the electrical activity of the heart. By positioning leads electrical sensing devices on the body in standardized locations, information about many heart conditions can be learned by looking for characteristic patterns on the EKG. Explanation: In a conventional 12 lead ECG 10 electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from

physicians have mandated. During routine procedures the use of lidocaine is indicated. It is important to know when this analgesic can lead to systemic problems . It is understood that the degree of adverse effects in the CNS and cardiovascular system are directly related to the blood levels of lidocaine. Myocardial effects include

1. List the structures and functions of the cardiovascular system. Do not forget blood and vessels are part of this system. The cardiovascular consists of the heart, blood vessels and blood. It has three functions one of them is that it transports nutrients, oxygen and hormones to cells throughout the body and removes wastes such as carbon dioxide and nitrogenous waste. It also regulates the body’s temperature, fluid pH and water contents of cells. And also it protects it by white blood cells, antibodies

Trauma 1st year students) SUPERVISOR: Dr. EDITH TARIMO 2015. INTRODUCTION Dysrrhythmia or arrhythmia is an abnormal heart rhythm due to disturbance in heart automaticity, abnormal heart conduction or both thus cause reduction in cardiac output, change in heart rate and also affects tissue perfusion(Wilkins, 2005). The progression of an abnormal origination of electrical impulse causes abnormal formation of

The heart is a muscular organ that pumps blood throughout the body. The human heart is con shaped and has the size of a closed fist. In accordance to that, a bigger person has a bigger fist and therefore a bigger heart. Moreover, it is the only involuntary striated muscle that is consisting of four chambers: two upper chambers “atria” and two lower one “ventricles”, where the right side of the heart is separated from the left side by an inter-ventricular septum, and they are connected by pulmonary

effects of temperature on heart rate and strength of contraction? The effects of temperature can either increase the heart rate or decrease the heart rate. The temperature can also effect the strength of contraction either by making the contraction stronger or weaker. Background: Explain on the cellular level how dropping warm Ringers solution on the frog’s heart would affect the cells of the SA node. Dropping warm Ringers solution on the frog’s heart would increase the heart rate because the calcium

Abstract Electrocardiogram (ECG) signal has been widely used for heart diagnosis. This paper presents a VLSI based design of high speed and area efficient distributive arithmetic discrete wavelet transform (DA-DWT) for Arrhythmia Detection and its FPGA implementation. The main focus of the work is to filter and detect the QRS complex in the ECG signal and to identify the time and frequency variations. By comparing these variations with that of the variations in the normal ECG waveform one may reach

Biomedical testing is a vital part of the healthcare system. It is used to diagnose disease and evaluate the effectiveness of treatment through the analysis of fluids, and tissue sample from the patient. (Cunningham & Pitt, 2009). Biomedical testing is a rising field of modern medicine within 70% of diagnoses based on the pathology result provided by laboratory services. With biomedical scientists having an estimated 150 million samples in the United Kingdom (UK) every person at some point in their

Annexe 1 : Heart murmur 1. An unusual sound coming from the heart that can be detected by a stethoscope. These noises are caused by an abnormal turbulence produced when blood flows across one of the heart (valves, cardiac chambers) and or vessels close to the heart Heart murmurs are classified by the intensity of the sound heard: Stage I (murmur is of low intensity and can hardly be heard) to Stage VI (murmur is extremely loud). Cardiac murmurs can be present at birth (congenital; often caused

spearheading a fundraising effort to support her brother who is suffering from Wolff-Parkinson White (WPW) syndrome. Although Kaden was born with this heart condition; in most people, the symptoms of WPM begin to manifest at age 11 to 50. According to Heart Racing, this rare electrical system disorder comes about when an anomalous accessory electrical conduction passageway develops between the heart’s ventricles and atria. Although the condition is not considered fatal, the symptoms associated with WPM include

abnormalities of the ECG are quite well defined and can be readily identified. The ECG signal provides the following information of a human heart [1]: Impulse origin and propagation Drug effects on the heart Heart position and its relative chamber size Changes in electrolyte concentrations Extent and location of myocardial ischemia Heart rhythm

Supraventricular Tachycardia Narrow complex tachycardias are defined by the presence in the electrocardiogram of a QRS complex with less than 120 msec duration and a heart rate more than 100 beats per minute. They are usually of supraventricular origin, though narrow complex ventricular tachycardias were rarely reported in the literature (Hayes et al, 1991). Supraventricular origin of the tachycardia means the obligatory involvement of one or more of the cardiac structures above bifurcation of

Phantom limb syndrome is a neurological disorder that affects amputees and is characterized by phantom sensations that appear to emanate from the missing limb (Rugnetta). The phantom sensations can be painful or nonpainful in nature, so that the individual experiences pain, touch sensations, or changes in temperature (Rugnetta), despite missing the peripheral portions of the spinothalamic pathway and other pathways involved in relaying information to associated regions of the brain, and in particular