Cardiac Stress Testing
... chest pain. A baseline ECG reveals a left bundle branch block (LBBB). A thallium stress test is ordered. The thallium result suggests “septal ischemia”. A cardiac catheterization is recommended. The result is “angiographically normal coronary arteries.” Why? For the complete answer, see below (pharm ...
... chest pain. A baseline ECG reveals a left bundle branch block (LBBB). A thallium stress test is ordered. The thallium result suggests “septal ischemia”. A cardiac catheterization is recommended. The result is “angiographically normal coronary arteries.” Why? For the complete answer, see below (pharm ...
Potential Role of QT Interval Prolongation in Sudden
... For adult subjects (18 years of age and older), the maximal measured QT interval in lead II was compared to the normal standards of Simonson et al.;29 the average QT interval in lead II was compared to the normal standards of Ashman and Hull.26 27 QT intervals in adults were considered prolonged if ...
... For adult subjects (18 years of age and older), the maximal measured QT interval in lead II was compared to the normal standards of Simonson et al.;29 the average QT interval in lead II was compared to the normal standards of Ashman and Hull.26 27 QT intervals in adults were considered prolonged if ...
What You Should Know About Your Pacemaker Patient Manual
... over a specific frequency to a mobile patient device. These messages are then transmitted via a cellular network or landline connection to the BIOTRONIK Service Center and can only be viewed by your physician via the Internet in the form of a Cardio Report. Implanted – To be placed inside the body. ...
... over a specific frequency to a mobile patient device. These messages are then transmitted via a cellular network or landline connection to the BIOTRONIK Service Center and can only be viewed by your physician via the Internet in the form of a Cardio Report. Implanted – To be placed inside the body. ...
The Veterinary Journal - Repositório Aberto da Universidade do Porto
... Echocardiography was carried out under light anaesthesia and spontaneous respiration, using a GE Vivid 7 system (GE VingMed) equipped with tissue Doppler technology. The standard phased-array, variablefrequency (3.5–6.9 MHz) transducer was used for two-dimensional, Doppler, and TDI recordings. Recor ...
... Echocardiography was carried out under light anaesthesia and spontaneous respiration, using a GE Vivid 7 system (GE VingMed) equipped with tissue Doppler technology. The standard phased-array, variablefrequency (3.5–6.9 MHz) transducer was used for two-dimensional, Doppler, and TDI recordings. Recor ...
Clinical characteristics, aetiological factors and
... an acute myocardial infarction with absolutely normal epicardial coronary arteries at the post-myocardial infarction coronary angiogram. The aetiological and prognostic factors in this population were also analysed. Background Few data exist concerning the outcome, and aetiological and prognostic fa ...
... an acute myocardial infarction with absolutely normal epicardial coronary arteries at the post-myocardial infarction coronary angiogram. The aetiological and prognostic factors in this population were also analysed. Background Few data exist concerning the outcome, and aetiological and prognostic fa ...
Premature opening of aortic valve in severe - Heart
... Premature opening of the aortic valve in late diastole has been demonstrated by echocardiography in a patient with severe aortic regurgitation. Valve opening coincided with the end of the diastolic murmur and equalization of aortic and left ventricular diastolic pressures. Echocardiography of the ao ...
... Premature opening of the aortic valve in late diastole has been demonstrated by echocardiography in a patient with severe aortic regurgitation. Valve opening coincided with the end of the diastolic murmur and equalization of aortic and left ventricular diastolic pressures. Echocardiography of the ao ...
AFib Management and the Role of Catheter Ablation
... methodological and technical revolution since its initial appearance two decades ago ...
... methodological and technical revolution since its initial appearance two decades ago ...
I IIaIIbIII - Ochsner Health System
... Permanent pacemaker implantation is indicated for third-degree and advanced second-degree AV block at any anatomic level in awake, symptom-free patients in sinus rhythm, with documented periods of asystole greater than or equal to 3.0 seconds or any escape rate less than 40 bpm, or with an escape rh ...
... Permanent pacemaker implantation is indicated for third-degree and advanced second-degree AV block at any anatomic level in awake, symptom-free patients in sinus rhythm, with documented periods of asystole greater than or equal to 3.0 seconds or any escape rate less than 40 bpm, or with an escape rh ...
Atenolol - University of Vermont
... Research. All had had clinically stable exerciseinduced angina for 3 or more months. No patient had valvular heart disease, cardiac failure, obstructive airways disease, hypertension (resting diastolic pressure > 100 mm Hg), diabetes, or thyroid or renal disease. ...
... Research. All had had clinically stable exerciseinduced angina for 3 or more months. No patient had valvular heart disease, cardiac failure, obstructive airways disease, hypertension (resting diastolic pressure > 100 mm Hg), diabetes, or thyroid or renal disease. ...
Jostein Grimsmo and Ulrik Wisløff Øivind Rognmo, Trine
... and moderate-intensity training in CHD patients. We found 1 fatal cardiac arrest during moderate-intensity exercise and 2 nonfatal cardiac arrests during high-intensity interval exercise. Because the number of high-intensity training sessions was 36% of the number of moderate-intensity sessions, the ...
... and moderate-intensity training in CHD patients. We found 1 fatal cardiac arrest during moderate-intensity exercise and 2 nonfatal cardiac arrests during high-intensity interval exercise. Because the number of high-intensity training sessions was 36% of the number of moderate-intensity sessions, the ...
Effect of Endotracheal Suctioning with and without Normal Saline on
... can even be harmful11. Possible side effects of insertion of normal saline during suctioning include impaired alveolar gas exchange and decreased oxygen-saturated haemoglobin, decreased venous oxygen saturation, increased incidence of nosocomial pneumonia and increased intracranial pressure12. Sever ...
... can even be harmful11. Possible side effects of insertion of normal saline during suctioning include impaired alveolar gas exchange and decreased oxygen-saturated haemoglobin, decreased venous oxygen saturation, increased incidence of nosocomial pneumonia and increased intracranial pressure12. Sever ...
Iron Deposition following Chronic Myocardial Infarction as a
... recordings to the 24-hour clock. Only recordings with duration of 24 hours were considered for analysis. An operator blinded to the MR details of the infarct characteristics analyzed the Holter recordings. The morphology of the beats was monitored and only normal beats (sinus rhythm) were selected f ...
... recordings to the 24-hour clock. Only recordings with duration of 24 hours were considered for analysis. An operator blinded to the MR details of the infarct characteristics analyzed the Holter recordings. The morphology of the beats was monitored and only normal beats (sinus rhythm) were selected f ...
Pericarditis Guide
... normal rhythm. These symptoms should improve when the constrictive pericarditis is treated. Constrictive pericarditis often can be treated with a diuretic, such as furosemide, to treat the fluid retention. If you develop a heart rhythm problem, you may need to take a medication to treat the irregula ...
... normal rhythm. These symptoms should improve when the constrictive pericarditis is treated. Constrictive pericarditis often can be treated with a diuretic, such as furosemide, to treat the fluid retention. If you develop a heart rhythm problem, you may need to take a medication to treat the irregula ...
Current and Evolving Echocardiographic Techniques for the Quantitative Evaluation
... used to convert the phase shifts into velocity values, which are displayed in a color overlay of the image3 (Figure 1C). Although pulsedwave Doppler has the advantage of offering a direct curve display during the examination, only color Doppler allows postprocessing, including tracking of the sample ...
... used to convert the phase shifts into velocity values, which are displayed in a color overlay of the image3 (Figure 1C). Although pulsedwave Doppler has the advantage of offering a direct curve display during the examination, only color Doppler allows postprocessing, including tracking of the sample ...
Diagnosis and Management of Acute Rheumatic Fever and
... – May occur on both sides or only one side of body – More common in teenagers and females (rare after age 20) – May be associated with irritability and or depression – May begin up to 3-4 months after the streptococcal throat infection, and often occurs without other symptoms – Usually resolves with ...
... – May occur on both sides or only one side of body – More common in teenagers and females (rare after age 20) – May be associated with irritability and or depression – May begin up to 3-4 months after the streptococcal throat infection, and often occurs without other symptoms – Usually resolves with ...
Myocardial structure, function and ischaemic tolerance in a rodent
... p<0.01) as compared to control hearts. These changes were associated with reductions in RISK pathway function with 30-50%, and 40-60% reductions in Akt and GSK-3β expression and phosphorylation respectively in obese rat hearts compared to controls. Total eNOS expression was reduced by 25% in obese r ...
... p<0.01) as compared to control hearts. These changes were associated with reductions in RISK pathway function with 30-50%, and 40-60% reductions in Akt and GSK-3β expression and phosphorylation respectively in obese rat hearts compared to controls. Total eNOS expression was reduced by 25% in obese r ...
1 A Stepwise Approach to the Management of Post
... 10) were acquired in and around these areas. Refining the area under investigation relied on the usual clinical indicators, such as sinus rhythm analysis, echocardiography, and VT morphology on the 12-lead ECG. More data points were acquired in the zones defined as scarified, with lowamplitude poten ...
... 10) were acquired in and around these areas. Refining the area under investigation relied on the usual clinical indicators, such as sinus rhythm analysis, echocardiography, and VT morphology on the 12-lead ECG. More data points were acquired in the zones defined as scarified, with lowamplitude poten ...
A Comprehensive look At heart structure, function, and health
... diastolic — the pressure when the ventricles are relaxed and the heart is filling. diuretic ― drug that enables the kidneys to rid the body of excess fluid;; commonly referred to as a “water pill.” dorsal ― pertaining to back; posterior echocardiogram( echo) ― imaging procedure ...
... diastolic — the pressure when the ventricles are relaxed and the heart is filling. diuretic ― drug that enables the kidneys to rid the body of excess fluid;; commonly referred to as a “water pill.” dorsal ― pertaining to back; posterior echocardiogram( echo) ― imaging procedure ...
Sequential growth of fetal sheep cardiac myocytes in response to
... for plasma protein concentration, and for blood gases, pH, and hematocrit. All experiments were begun at an average of 130 ⫾ 2 days of gestation (term is 145 days). Adult sheep plasma protein was infused in the fetal circulation as previously described (13). In brief, after baseline pressure measure ...
... for plasma protein concentration, and for blood gases, pH, and hematocrit. All experiments were begun at an average of 130 ⫾ 2 days of gestation (term is 145 days). Adult sheep plasma protein was infused in the fetal circulation as previously described (13). In brief, after baseline pressure measure ...
Relative Contributions of the Atrial Systole
... was intubated and ventilation controlled with an Emerson volume-limited ventilator. Right heart bypass was instituted as reported previously in detail (6). Briefly, the venous return from the cannulated superior and inferior venae cavae was led to a reservoir from which the blood was warmed, oxygena ...
... was intubated and ventilation controlled with an Emerson volume-limited ventilator. Right heart bypass was instituted as reported previously in detail (6). Briefly, the venous return from the cannulated superior and inferior venae cavae was led to a reservoir from which the blood was warmed, oxygena ...
Study Guide - Redlands Community Hospital
... arrest from heart attack most often develops within the first 4 hours after onset ol symptoms. For this reason it is extremely important to activate the emergency response system when symptoms of new or prolonged angina (unrelieved by rest and nitroglycerin) or nocturnal angina develop. ...
... arrest from heart attack most often develops within the first 4 hours after onset ol symptoms. For this reason it is extremely important to activate the emergency response system when symptoms of new or prolonged angina (unrelieved by rest and nitroglycerin) or nocturnal angina develop. ...
View/Open
... In this ventriculoarterial coupling, the arterial system is treated as if the elastic chamber has volume elastance Ea just as the left ventricle is treated as an elastic chamber with end-systolic elastance Emax(1).In this sense, ventriculoarterial coupling represents the function of both the ventric ...
... In this ventriculoarterial coupling, the arterial system is treated as if the elastic chamber has volume elastance Ea just as the left ventricle is treated as an elastic chamber with end-systolic elastance Emax(1).In this sense, ventriculoarterial coupling represents the function of both the ventric ...
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... interfere with the aortic or atrioventricular valves; 4) coagulation disorders wherein antiplatelet or anticoagulant therapy is contraindicated; and 5) intra-cardiac mass or vegetation. All varieties of occluders and delivery systems used in this research were provided by Lifetech Scientific (Shenzh ...
... interfere with the aortic or atrioventricular valves; 4) coagulation disorders wherein antiplatelet or anticoagulant therapy is contraindicated; and 5) intra-cardiac mass or vegetation. All varieties of occluders and delivery systems used in this research were provided by Lifetech Scientific (Shenzh ...
Foal Physiology and Special Considerations During
... a higher oxygen requirement (e.g., 6 to 8 mL/kg/min) due to a higher metabolic demand than adult horses. Compared with adult horses, neonatal foals at birth have a lower Pao2 level (e.g., 40 mm Hg), which increases to 70 to 80 mm Hg within a few hours after delivery.2 This value can also be affected ...
... a higher oxygen requirement (e.g., 6 to 8 mL/kg/min) due to a higher metabolic demand than adult horses. Compared with adult horses, neonatal foals at birth have a lower Pao2 level (e.g., 40 mm Hg), which increases to 70 to 80 mm Hg within a few hours after delivery.2 This value can also be affected ...
Heart Failure: A Randomized Trial and Peripheral Resistance in
... stability for at least 3 months before entry into the study. Exclusion criteria were significant valvular heart disease, uncontrolled hypertension, diabetes mellitus, hypercholesterolemia ($6 mmol/L [232 mg/ dL]), peripheral vascular disease, pulmonary disease, or musculoskeletal abnormalities precl ...
... stability for at least 3 months before entry into the study. Exclusion criteria were significant valvular heart disease, uncontrolled hypertension, diabetes mellitus, hypercholesterolemia ($6 mmol/L [232 mg/ dL]), peripheral vascular disease, pulmonary disease, or musculoskeletal abnormalities precl ...
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.