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Flashcards on congenital heart diseases
Clinical scenarios of atrial septal defect
Flashcards on congenital heart diseases
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Atrial septal defect (ASD) is a congenital heart disease in which there is an opening in the wall of the atrial septum between the heart’s two upper chambers. These chambers are the left and right atria. Normally the heart is separated by a muscular wall called the septum. Each side of the heart also has two parts, an atrium and a ventricle. The right side normally carries deoxygenated blood back to the heart and the left side carries oxygenated blood back out to the body. During ASD, the oxygenated blood passes from the left atrium through an opening in the septum, into the right atrium. This causes the oxygenated and deoxygenated blood to mix. This leads to increased blood flow through the right side of the heart and lungs. This congenital
In this lab, I took two recordings of my heart using an electrocardiogram. An electrocardiogram, EKG pg. 628 Y and pg. 688 D, is a recording of the heart's electrical impulses, action potentials, going through the heart. The different phases of the EKG are referred to as waves; the P wave, QRS Complex, and the T wave. These waves each signify the different things that are occurring in the heart. For example, the P wave occurs when the sinoatrial (SA) node, aka the pacemaker, fires an action potential. This causes the atria, which is currently full of blood, to depolarize and to contract, aka atrial systole. The signal travels from the SA node to the atrioventricular (AV) node during the P-Q segment of the EKG. The AV node purposefully delays
According to Batshaw, Roizen, and Lotrecchiano (2013), patent ductus arteriosus (PDA) is “the persistence of a fetal passage permitting blood to bypass the lungs” (p. 745). This is an inherited heart condition in which the ductus, a small pathway between the pulmonary and the aortic, valves remain open. This cardiovascular problem usually occurs in low birth weight infants. The blood vessels usually naturally closes after birth (Batshaw et al., 2013, p. 96). It becomes atypical if it remains open after the neonatal period. The structure usually closes in typical developing newborns around the initial 24 hours, and anatomical closure is supposed to follow several weeks later (Stanford Children’s Health, 2015). At the point when the ductus arteriosus stays open, the blood from the oxygen-rich aorta blends with the oxygen-poor pulmonary artery causing the higher chance of blood pressure in the lung pathways (U. S. Department of Health and Human Services, 2011). Certain children who have patent ductus arteriosus may be given medication, relying upon the circumstance to standardize the blood and oxygen levels until surgery is performed. Doctor can treat this condition by providing pharmaceutical medicine, catheter-based procedures, and surgery (U. S. Department of Health and Human Services, 2011).
... as the heart, major blood vessels, and airways) toward the other side of the chest. The shift can cause the other lung to become compressed, and can affect the flow of blood returning to the heart. This situation can lead to low blood pressure, shock, and death.
Tetralogy of Fallot is a congenital heart disease which involves four different heart defects in one. The four different heart defects are a large ventricular septal defect (VSD), Pulmonary Stenosis, Right ventricular hypertrophy, and an overriding aorta. These congenital defects change the normal flow of blood thro...
I haven’t always wanted to be a cardiac sonographer. The desire to be in this career just started to spark an interest in me a couple years back. You see, since I was a little girl I had always dreamt of becoming an architect or an interior designer. At first, the design aspect of that occupation interested me greatly. My dream started to fall short when I realized that a job like this would require me to make a move to a bigger city and that is something that I do not wish to pursue. This meant it was time to find another path to go down and reconfigure my future.
The right side of the heart moves deoxygenated blood. Once heart failure occurs this causes an accumulation or damming back flow of blood into the systemic venous system. Congestive heart failure results to blood back up and drains into the inferior vena cava, and the liver become swelled. The amount of edema fluid is an indication by a gain in weight. Therefore, daily measurements of weight gained can be used to calculating fluid accumulation in congestive heart failure. The left side of the heart moves oxygenated blood. When heart failures occurs the heart shifts blood from a low-pressure pulmonary circulation into a high-pressure side of the systemic circulation. Proximate is a decrease in cardiac output that increases in the left atrial and left ventricle diastolic pressures, and congestion in the pulmonary circulation. This increase in pulmonary pressure leads to pulmonary edema. In severe pulmonary edema, capillary fluid moves into the alveoli, which impairs the respiratory passages for adequate gas
Hypertrophic cardiomyopathy is an inherited disease that affects the cardiac muscle of the heart, causing the walls of the heart to thicken and become stiff. [1] On a cellular level, the sarcomere increase in size. As a result, the cardiac muscles become abnormally thick, making it difficult for the cells to contract and the heart to pump. A genetic mutation causes the myocytes to form chaotic intersecting bundles. A pathognomonic abnormality called myocardial fiber disarray. [2,12] How the hypertrophy is distributed throughout the heart is varied. Though, in most cases, the left ventricle is always affected. [3] The heart muscle can thicken in four different patterns. The most common being asymmetrical septal hypertrophy without obstruction. Here the intraventricular septum becomes thick, but the mitral valve is not affected. Asymmetrical septal hypertrophy with obstruction causes the mitral valve to touch the septal wall during contraction. (Left ventricle outflow tract obstruction.) The obstruction of the mitral valve allows for blood to slowly flow from the left ventricle back into the left atrium (Mitral regurgitation). Symmetrical hypertrophy is the thickening of the entire left ven...
“Heart failure is a chronic, progressive condition in which the heart muscle is unable to pump enough blood through to meet the body's needs for blood and oxygen” (American Heart Association, 2012, para 3). What this basically means is that the body is functioning in a way that the heart cannot keep up with. Although heart failure can be acute and occur suddenly, it usually develops over time and is a long-term or chronic condition. There are two different types of heart failure, left-sided and right-sided, and they can be caused by other diseases such as diabetes, coronary heart disease, or high blood pressure (National Institutes of Health, 2012). In most cases, both sides of the heart are affected simultaneously.
side of the heart pumps oxygen-poor blood from the cells of the body back to the
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
Congenital heart disease is a defect in one or more structures of the heart or blood vessels that occurs prior to birth. Defects can be severe at birth and require immediate attention, while others are mild that will heal on its own, and some go unnoticed until a person is older. It affects 1 out of every 100 children at birth (WebMD, American Heart Association).
Most often the disease starts in the left ventricle, and then often spreads to both the atrium and right ventricle as well. Usually there will also be mitral and tricuspid regurgitation, due to the dilation of the annuli. This regurgitation will continue to make problems worse by adding excessive volume and pressure to the atria, which is what then causes them to dilate. Once the atria become dilated it often leads to atrial fibrillation. As the volume load increases the ventricles become more dilated and over time the myocytes become weakened and cannot contract as they should. As you might have guessed with the progressive myocyte degeneration, there is a reduction in cardiac output which then may present as signs of heart failure (Lily).
According to the doctor, the patient might have developed congestive heart failure. Is it right-sided or
Cardiac dysrhythmias come in different degrees of severity. There are heart conditions that you are able to live with and manage on a daily basis and those that require immediate attention. Atrial Fibrillation is one of the more frequently seen types of dysrhythmias (NIH, 2011). The best way to diagnosis a heart condition is by reading a cardiac strip (Ignatavicius &Workman, 2013). Cardiac strips play an chief part in the nursing world allowing the nurse and other trained medical professionals to interpret what the heart is doing. In a normal strip, one can clearly identify a P wave before every QRS complex, which is then followed by a T wave; in Atrial Fibrillation, the Sinoatrial node fires irregularly causing there to be no clear P wave and an irregular QRS complex (Ignatavicius & Workman, 2013). Basically, it means that the atria, the upper chambers of the heart, are contracting too quickly and no clear P wave is identified because of this ‘fibrillation’ (Ignatavicius & Workman, 2013).
The membrane that surrounds the heart is called the pericardium. The heart consists of four chambers. The left and right atria are known as the upper chambers. The lower chambers are referred to as the left and right ventricles. The septum is the wall of muscle that divides the left and right atria and left and right ventricles.