LPN-C - Faculty Sites
... Inhalation and exhalation - Inhalation (inspiration): the diaphragm, assisted by external intercostal muscles, causes the size of the chest cavity to increase; intrathoracic pressure becomes more negative; air is drawn into the lungs Exhalation (expiration): occurs as the elastic components of th ...
... Inhalation and exhalation - Inhalation (inspiration): the diaphragm, assisted by external intercostal muscles, causes the size of the chest cavity to increase; intrathoracic pressure becomes more negative; air is drawn into the lungs Exhalation (expiration): occurs as the elastic components of th ...
Heart Attack
... loss of the muscle is permanent. While heart attacks can occur at any time, most heart attacks occur between 4:00 A.M. and 10:00 A.M. because of the higher blood levels of adrenaline released from the adrenal glands during the morning hours. Increased adrenaline may contribute to rupture of choleste ...
... loss of the muscle is permanent. While heart attacks can occur at any time, most heart attacks occur between 4:00 A.M. and 10:00 A.M. because of the higher blood levels of adrenaline released from the adrenal glands during the morning hours. Increased adrenaline may contribute to rupture of choleste ...
ACLS Practice Test You find an unresponsive adult patient. Your first
... 5. A patient was in ventricular fibrillation. After being defibrillated at 200 joules, then 300 joules, the patient goes into normal sinus rhythm with a pulse and stable vital signs. If ventricular fibrillation were to return, at what energy level should you defibrillate again? a. 50 joules b. 200 j ...
... 5. A patient was in ventricular fibrillation. After being defibrillated at 200 joules, then 300 joules, the patient goes into normal sinus rhythm with a pulse and stable vital signs. If ventricular fibrillation were to return, at what energy level should you defibrillate again? a. 50 joules b. 200 j ...
Surgical treatment of cor triatriatum in a geriatric patient: A rare
... fifth day. During the 1 year follow-up, the patient is still on sinus rhythm. Discussion: Cor triatriatum is a congenital cardiac abnormality with a fibromuscular membrane, that divides the left atrium into two chambers.2 The incidence of cor triatriatum among neonates with congenital heart disease ...
... fifth day. During the 1 year follow-up, the patient is still on sinus rhythm. Discussion: Cor triatriatum is a congenital cardiac abnormality with a fibromuscular membrane, that divides the left atrium into two chambers.2 The incidence of cor triatriatum among neonates with congenital heart disease ...
Overview of cardiac adverse drug reactions reported in
... patients), use of cardiac medication like ACE inhibitors, ß-Blockers or CalciumBlockers (5) and in four reports no information was present. One patient suffered from a non fatal cardiac arrest two years of after start of rosiglitazone. The other cases concerned fluid retention without further cardi ...
... patients), use of cardiac medication like ACE inhibitors, ß-Blockers or CalciumBlockers (5) and in four reports no information was present. One patient suffered from a non fatal cardiac arrest two years of after start of rosiglitazone. The other cases concerned fluid retention without further cardi ...
Pharmacological management of Ischaemic heart disease stroke
... Peripheral vasodilation - flushing, headache, ankle oedema Cardiac effects - AV block, heart failure Constipation Short-acting dihydropyridines a/w mortality and MI ...
... Peripheral vasodilation - flushing, headache, ankle oedema Cardiac effects - AV block, heart failure Constipation Short-acting dihydropyridines a/w mortality and MI ...
Cardiac Pacemaker - Hospital Chronicles
... Following its early description, much work was devoted to a thorough investigation of the properties of If in relation to kinetics, ionic nature and modulation by neuromediators (DiFrancesco, 1985; DiFrancesco, 1993). These studies confirmed that the pacemaker current is an essential mechanism in th ...
... Following its early description, much work was devoted to a thorough investigation of the properties of If in relation to kinetics, ionic nature and modulation by neuromediators (DiFrancesco, 1985; DiFrancesco, 1993). These studies confirmed that the pacemaker current is an essential mechanism in th ...
Techniques for ventricular repolarization instability
... basic concepts of ECG signal processing are described. In section III-B ECG features characterizing the spatial variation of repolarization are reviewed. Section III-C explores ECG measurements and morphological markers describing temporal variability of ventricular repolarization, including the dyn ...
... basic concepts of ECG signal processing are described. In section III-B ECG features characterizing the spatial variation of repolarization are reviewed. Section III-C explores ECG measurements and morphological markers describing temporal variability of ventricular repolarization, including the dyn ...
Early Detection of Congenital Heart Disease
... 55% of babies who were later diagnosed with CHD. In their population, only a third of babies with abnormal examinations were referred for early diagnosis. The rate of abnormal newborn examination varied from 0% with total anomalous pulmonary venous drainage to 75% of babies with pulmonary stenosis. ...
... 55% of babies who were later diagnosed with CHD. In their population, only a third of babies with abnormal examinations were referred for early diagnosis. The rate of abnormal newborn examination varied from 0% with total anomalous pulmonary venous drainage to 75% of babies with pulmonary stenosis. ...
heart sounds - Donald Hudson Home
... Everything You need to Know About Heart Sounds • We have all heard the heart make the usual sounds. ...
... Everything You need to Know About Heart Sounds • We have all heard the heart make the usual sounds. ...
Module 34 / Valves of the Heart
... Diseases of the Heart: Ruptured Chordae Tendinae The chordae tendinae perform an important function by keeping the cusps of the atrioventricular valves tethered to the interior wall of the ventricles. Without these tendons, and their associated papillary muscles, the valves could become inverted whe ...
... Diseases of the Heart: Ruptured Chordae Tendinae The chordae tendinae perform an important function by keeping the cusps of the atrioventricular valves tethered to the interior wall of the ventricles. Without these tendons, and their associated papillary muscles, the valves could become inverted whe ...
Full text
... However, during the heart contracting, it could not easily measure the volume changes, called the stroke volume (the blood volume ejected by each ventricle with each beat). Therefore, the cardiac output (the total blood volume ejected by each ventricle per minute) of an insect was also difficult to ...
... However, during the heart contracting, it could not easily measure the volume changes, called the stroke volume (the blood volume ejected by each ventricle with each beat). Therefore, the cardiac output (the total blood volume ejected by each ventricle per minute) of an insect was also difficult to ...
VAD Therapy Changing the Treatment of Heart Failure.
... heart pump blood throughout the body by removing blood from the ventricle and pumping it into the artery. VADs restore cardiac output and help alleviate the symptoms of heart failure. ...
... heart pump blood throughout the body by removing blood from the ventricle and pumping it into the artery. VADs restore cardiac output and help alleviate the symptoms of heart failure. ...
giant left atrial myxoma presenting with heart failure
... axis deviation and ST-T wave changes. These were due to the right ventricular overload and eventual failure. Common etiologies of heart failure in this age group include hypertension, valvular heart disease and cardiomyopathies. However, the patient’s echocardiographic study did not suggest any of t ...
... axis deviation and ST-T wave changes. These were due to the right ventricular overload and eventual failure. Common etiologies of heart failure in this age group include hypertension, valvular heart disease and cardiomyopathies. However, the patient’s echocardiographic study did not suggest any of t ...
The impact of pregnancy on heart diseases. Recommendations for
... After delivery there is immediate rise in cardiac output – relife of IVC and contracting uterus empties the blood to systemic circulation Women with cardiovascular disease are most at risk of pulmonary oedema during second satge of labour and immediate postpartum period Cardiac output returns ...
... After delivery there is immediate rise in cardiac output – relife of IVC and contracting uterus empties the blood to systemic circulation Women with cardiovascular disease are most at risk of pulmonary oedema during second satge of labour and immediate postpartum period Cardiac output returns ...
Heart Failure and Importance of Collaboration of
... affects millions of people from all around the world and expected to increase overtime due to growing ageing population. Although prevalence of HF is almost 1-3% in general population, it rises dramatically to 10% to 15% after 65 years of age and the incidence approaches 20 per 1000 population per y ...
... affects millions of people from all around the world and expected to increase overtime due to growing ageing population. Although prevalence of HF is almost 1-3% in general population, it rises dramatically to 10% to 15% after 65 years of age and the incidence approaches 20 per 1000 population per y ...
Case Report - the Cardiovascular Journal of Africa
... cavity with spontaneous echo contrast attached to the posterior wall of the left heart and communication with the right atrium. Colour Doppler flow imaging demonstrated a to-and-fro flow between the cavity and right atrium (Fig. 2A). Contrastenhanced computed tomography (CT) showed a giant cavity (1 ...
... cavity with spontaneous echo contrast attached to the posterior wall of the left heart and communication with the right atrium. Colour Doppler flow imaging demonstrated a to-and-fro flow between the cavity and right atrium (Fig. 2A). Contrastenhanced computed tomography (CT) showed a giant cavity (1 ...
Chapter 14 Heart: Cardiovascular Physiology
... in a cardiac muscle fiber Cardiac muscle fibers have a very high energy demand Cardiac muscle consumes 70-80% of the oxygen delivered to it by the blood. This is twice the amount of oxygen extracted from blood by other body cells The only way to get more oxygen to an exercising heart is to increase ...
... in a cardiac muscle fiber Cardiac muscle fibers have a very high energy demand Cardiac muscle consumes 70-80% of the oxygen delivered to it by the blood. This is twice the amount of oxygen extracted from blood by other body cells The only way to get more oxygen to an exercising heart is to increase ...
Who Discovered the Frank-Starling Mechanism?
... pressure on heart function. I will present evidence that the essential features of this mechanism were discovered at Carl Ludwig’s Physiological Institute at the University of Leipzig in the course of the first experiments on the isolated perfused frog heart long before Otto Frank and Ernest H. Star ...
... pressure on heart function. I will present evidence that the essential features of this mechanism were discovered at Carl Ludwig’s Physiological Institute at the University of Leipzig in the course of the first experiments on the isolated perfused frog heart long before Otto Frank and Ernest H. Star ...
Summary of Resuscitation Techniques
... resumption of chest compressions Each breath is given over one second, and with enough volume to produce chest rise In adults the focus is on early defibrillation – send for help first, and compressions as a priority over rescue breathing In children and infants 2 attempted initial breaths are ...
... resumption of chest compressions Each breath is given over one second, and with enough volume to produce chest rise In adults the focus is on early defibrillation – send for help first, and compressions as a priority over rescue breathing In children and infants 2 attempted initial breaths are ...
Transposition of the great arteries
... operation will lead normal lives in their childhood, do be aware that unfortunately complications of surgery can occur years later. These complications include narrowing of the artery leading to the lungs (the pulmonary artery) and leaking heart valves (most commonly the aortic valve). These complic ...
... operation will lead normal lives in their childhood, do be aware that unfortunately complications of surgery can occur years later. These complications include narrowing of the artery leading to the lungs (the pulmonary artery) and leaking heart valves (most commonly the aortic valve). These complic ...
幻灯片 1
... • First-line therapy for acute termination of AV nodal reentrant tachycardia and other supraventricular tachycardias in which the reentry loop involves the atrioventricular node • When administered to patients in sinus rhythm, who have a history of paroxysmal supraventricular tachycardia, adenosine ...
... • First-line therapy for acute termination of AV nodal reentrant tachycardia and other supraventricular tachycardias in which the reentry loop involves the atrioventricular node • When administered to patients in sinus rhythm, who have a history of paroxysmal supraventricular tachycardia, adenosine ...
Title Mechanisms of cardiac arrhythmias Author(s)
... and NCX are responsible for the “voltage clock” of pacemaker activity. It is possible that dysfunctions of the proteins involved in the “calcium clock” mechanism, for example, ryanodine receptor and sarcoplasmic reticulum Ca2+-ATPase, may also contribute [18]. Enhanced automaticity can also occur in ...
... and NCX are responsible for the “voltage clock” of pacemaker activity. It is possible that dysfunctions of the proteins involved in the “calcium clock” mechanism, for example, ryanodine receptor and sarcoplasmic reticulum Ca2+-ATPase, may also contribute [18]. Enhanced automaticity can also occur in ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten 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 twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.