Ventricular Tachycardia during Treatment with Modafinil
... stimulants. Modafinil has not yet been evaluated in patients with a history of myocardial infarction, acute coronary syndromes or heart failure. The exact causal mechanism of cardiac arrhythmias associated with modafinil remains to be elucidated. Stimulation of central dopamine receptors is consider ...
... stimulants. Modafinil has not yet been evaluated in patients with a history of myocardial infarction, acute coronary syndromes or heart failure. The exact causal mechanism of cardiac arrhythmias associated with modafinil remains to be elucidated. Stimulation of central dopamine receptors is consider ...
Guidelines for the Prevention of Postoperative Atrial Fibrillation
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
Risk Stratification for Sudden Cardiac Death after Acute Myocardial
... on-going risk of infection and risk of inappropriate shocks), the device should only be considered in the subset of patients deemed to be at greatest risk for sudden cardiac death. Current American and European guidelines recommend a central role for LVEF in determining which patients should be cons ...
... on-going risk of infection and risk of inappropriate shocks), the device should only be considered in the subset of patients deemed to be at greatest risk for sudden cardiac death. Current American and European guidelines recommend a central role for LVEF in determining which patients should be cons ...
The european infarction study experience
... ysis. data tapes and validation forms were mailed to the Data Handling and Monitoring Centre (DHMC) in Lyon for further processing. Data from the analysis of 24 hour electrocardiographic tapes were not disclosed to the phy• sician in charge of the patient. Analysis of data. Analyses were performed o ...
... ysis. data tapes and validation forms were mailed to the Data Handling and Monitoring Centre (DHMC) in Lyon for further processing. Data from the analysis of 24 hour electrocardiographic tapes were not disclosed to the phy• sician in charge of the patient. Analysis of data. Analyses were performed o ...
Glycogen storage disease as a unifying mechanism of disease in
... metabolic pathway in muscle, focusing on abnormal glycogen storage as a unifying mechanism for disease pathology in the PRKAG2 cardiac syndrome appears reasonable. First, it is necessary to hypothesize how abnormal cellular glycogen accumulation could manifest the observed clinical triad in patients ...
... metabolic pathway in muscle, focusing on abnormal glycogen storage as a unifying mechanism for disease pathology in the PRKAG2 cardiac syndrome appears reasonable. First, it is necessary to hypothesize how abnormal cellular glycogen accumulation could manifest the observed clinical triad in patients ...
cardiomyopathy - UMF IASI 2015
... hypertrophy and established asymmetric septal hypertrophy (ASH) was considered the “sine qua non” of the disease. That implies in fact a synonymy between the terms “hypertrophic cardiomyopathy”(HCM) and “obstructive hypertrophic cardiomyopathy”(OHCM). The medical technological advent of imaging te ...
... hypertrophy and established asymmetric septal hypertrophy (ASH) was considered the “sine qua non” of the disease. That implies in fact a synonymy between the terms “hypertrophic cardiomyopathy”(HCM) and “obstructive hypertrophic cardiomyopathy”(OHCM). The medical technological advent of imaging te ...
APPROACH TO PEDIATRIC ECG
... RSR’ in V1 or V3R in the absence of complete RBBB Upright T wave in V1 (>3 days) Presence of Q wave in V1, V3R, V4R DDx of RVH: ASD, TAPVR, pulmonary stenosis, TOF, large VSD with pulmonary HTN b) Left ventricular hypertrophy if any of the following: R >98% in V6, S >98% in V1 Increased ...
... RSR’ in V1 or V3R in the absence of complete RBBB Upright T wave in V1 (>3 days) Presence of Q wave in V1, V3R, V4R DDx of RVH: ASD, TAPVR, pulmonary stenosis, TOF, large VSD with pulmonary HTN b) Left ventricular hypertrophy if any of the following: R >98% in V6, S >98% in V1 Increased ...
Dobutamine stress echocardiography: A sensitive indicator of
... were obtained by placing subjects in the left lateral decubitus position. With the subjects in this positron, Doppler examination of mitral flow velocity was performed with the rangegated pulsed Doppler technique; the ultrasourd beam was aligned as parallel to flow as possible with the sample volume ...
... were obtained by placing subjects in the left lateral decubitus position. With the subjects in this positron, Doppler examination of mitral flow velocity was performed with the rangegated pulsed Doppler technique; the ultrasourd beam was aligned as parallel to flow as possible with the sample volume ...
Variations of Left Ventricular End-Diastolic Pressure, Volume, and
... this system the fluoroscopic images from two orthicon intensifier assemblies, positioned at right angle to one another and aligned in the same vertical plane, are displayed simultaneously on the same television screen. Because the output of each image-intensifier tube is scanned from left to right, ...
... this system the fluoroscopic images from two orthicon intensifier assemblies, positioned at right angle to one another and aligned in the same vertical plane, are displayed simultaneously on the same television screen. Because the output of each image-intensifier tube is scanned from left to right, ...
Sinus Bradycardia Sinus Tachycardia Premature Atrial Contraction
... atrium by abnormal path creating distorted P wave -At AV it may be stopped, delayed (long PR interval) or go normally ...
... atrium by abnormal path creating distorted P wave -At AV it may be stopped, delayed (long PR interval) or go normally ...
Exercise-Induced Left Ventricular Systolic Dysfunction in Women
... aimed at avoiding overt end-stage heart failure. Screening may consist of routine clinical examination only or may also include electrocardiography and possibly routine two-dimensional echocardiography. However, this approach can suffer from limited sensitivity.15 It is known that some women heteroz ...
... aimed at avoiding overt end-stage heart failure. Screening may consist of routine clinical examination only or may also include electrocardiography and possibly routine two-dimensional echocardiography. However, this approach can suffer from limited sensitivity.15 It is known that some women heteroz ...
Title Mechanisms of cardiac arrhythmias Author(s)
... Enhanced automaticity can also occur in the AV node, under conditions of acute myocardial infarction, digitalis toxicity, isoprenaline administration, and recent cardiac surgery. When the discharge rate of the AV node is higher than the sinus rate, it can lead to abnormal rhythms called accelerated ...
... Enhanced automaticity can also occur in the AV node, under conditions of acute myocardial infarction, digitalis toxicity, isoprenaline administration, and recent cardiac surgery. When the discharge rate of the AV node is higher than the sinus rate, it can lead to abnormal rhythms called accelerated ...
Commentaries on Viewpoint: Is left ventricular volume during
... Their data show that although pericardial pressure is transiently more negative during systole, that pressure is essentially constant at pleural pressure after the aortic valve closes, suggesting return to a positive transmural pressure during diastole. In summary, while I do not disagree with the o ...
... Their data show that although pericardial pressure is transiently more negative during systole, that pressure is essentially constant at pleural pressure after the aortic valve closes, suggesting return to a positive transmural pressure during diastole. In summary, while I do not disagree with the o ...
Chapter 18 PowerPoint B
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
Advanced ECG Interpretation
... Brugada syndrome seems to be the most common cause of natural death in men younger than 50 years. Brugada syndrome is 8-10 times more prevalent in men than in women, ...
... Brugada syndrome seems to be the most common cause of natural death in men younger than 50 years. Brugada syndrome is 8-10 times more prevalent in men than in women, ...
Quantitative study of infarcted myocardium in - Heart
... myocardial injury in those who die from a primary arrhythmia. Many of the patients who die within a few minutes of infarction perhaps belong to this arrhythmic group; a comparison, however, cannot be made with the present series because their early death does not allow time for the area of infarcted ...
... myocardial injury in those who die from a primary arrhythmia. Many of the patients who die within a few minutes of infarction perhaps belong to this arrhythmic group; a comparison, however, cannot be made with the present series because their early death does not allow time for the area of infarcted ...
Balance Between Right and Left Ventricular Output
... position and lowered again to the normal standing position are illustrated at slow paper speed (0.25 mm./sec.) in the left hand column of figure 3. On an expanded time scale (50 mm./sec), the changes in right and left ventricular output could be followed stroke by stroke. A progressive fall in strok ...
... position and lowered again to the normal standing position are illustrated at slow paper speed (0.25 mm./sec.) in the left hand column of figure 3. On an expanded time scale (50 mm./sec), the changes in right and left ventricular output could be followed stroke by stroke. A progressive fall in strok ...
The thick left ventricular wall of the giraffe heart normalises wall
... and aortic pressures to calculate left ventricular wall stress. Cardiac output was also determined by inert gas rebreathing to provide an additional and independent estimate of stroke volume. Echocardiography and inert gas-rebreathing yielded similar cardiac outputs of 16.1±2.5 and 16.4±1.4 l min−1, ...
... and aortic pressures to calculate left ventricular wall stress. Cardiac output was also determined by inert gas rebreathing to provide an additional and independent estimate of stroke volume. Echocardiography and inert gas-rebreathing yielded similar cardiac outputs of 16.1±2.5 and 16.4±1.4 l min−1, ...
Supraventricular Causes of Palpitations
... Frequent PVCs that cause a cardiomyopathy How and why? What burden of PVCs is required to cause a cardiomyopathy? 10,000 – 20,000 PVCs / day (10 – 20% of total heart beats / day) ? Some can have 20,000 / day and maintain normal LV function ? Some can have 5,000 / day and develop LV systolic dysfunct ...
... Frequent PVCs that cause a cardiomyopathy How and why? What burden of PVCs is required to cause a cardiomyopathy? 10,000 – 20,000 PVCs / day (10 – 20% of total heart beats / day) ? Some can have 20,000 / day and maintain normal LV function ? Some can have 5,000 / day and develop LV systolic dysfunct ...
Echocardiographic recognition and implications of
... ventricular bands and pathologic trabeculations (hypertrophic, fibrotic, or both) was assessed in 35 patients who underwent cardiac transplantation and pathologic examination. At pathologic study the prevalence of specific intracavitary structures ranged from 28% to 43%. Left ventricular thrombi wer ...
... ventricular bands and pathologic trabeculations (hypertrophic, fibrotic, or both) was assessed in 35 patients who underwent cardiac transplantation and pathologic examination. At pathologic study the prevalence of specific intracavitary structures ranged from 28% to 43%. Left ventricular thrombi wer ...
Right Ventricular Function in Inferior Wall
... infarction [4]. The increased risk is related to the presence of right ventricle involvement itself rather than the extent of left ventricular myocardial damage [5]. Inferior wall myocardial infarction patients with right ventricular infarction comprises a high risk subset of patient with a mortalit ...
... infarction [4]. The increased risk is related to the presence of right ventricle involvement itself rather than the extent of left ventricular myocardial damage [5]. Inferior wall myocardial infarction patients with right ventricular infarction comprises a high risk subset of patient with a mortalit ...
Comparison on Time Basis of Atrial Fibrillation with Normal Sinus
... per 1,000 in females, and 8 per 1,000 in males, and with an incidence of 0.2 new cases per 1,000 patient years in females and 0.9 new cases per 1,000 patient years in males [2]. Age, sex and the occurrence of some other similar maladies are directly related to the raised incidence, including high bl ...
... per 1,000 in females, and 8 per 1,000 in males, and with an incidence of 0.2 new cases per 1,000 patient years in females and 0.9 new cases per 1,000 patient years in males [2]. Age, sex and the occurrence of some other similar maladies are directly related to the raised incidence, including high bl ...
Delaying shock for cardiopulmonary resuscitation
... Based on the above pathophysiologic model of cardiac arrest, it is easy to understand why the results for the on-site providers, who had response times of less than 4 minutes, were so much better than those with average response times of greater than 6 minutes. This provides a structure for determin ...
... Based on the above pathophysiologic model of cardiac arrest, it is easy to understand why the results for the on-site providers, who had response times of less than 4 minutes, were so much better than those with average response times of greater than 6 minutes. This provides a structure for determin ...
Haemodynamic Effects of Levosimendan for Low Cardiac Output
... mechanical ventilation was 24 hours (range 15-57 hours) while the mean length of ICU stay was 4 days (range 39-172 hours). No major neurological, nephrological or other organ dysfunction was noted during the ICU stay. In-hospital and 30-day mortality were zero. Discussion Post-CPB low cardiac output ...
... mechanical ventilation was 24 hours (range 15-57 hours) while the mean length of ICU stay was 4 days (range 39-172 hours). No major neurological, nephrological or other organ dysfunction was noted during the ICU stay. In-hospital and 30-day mortality were zero. Discussion Post-CPB low cardiac output ...
Left Bundle Branch Block and Left Ventricular
... of 40 patients with anatomic left ventricular hypertrophy did not have electrocadogmphic evidence of this. Forty-eight of 50 patients (96 percent) had heart weights greater than expected for body weight which probably reflected iocreased left ventricular mass. It is suggested that while left veotric ...
... of 40 patients with anatomic left ventricular hypertrophy did not have electrocadogmphic evidence of this. Forty-eight of 50 patients (96 percent) had heart weights greater than expected for body weight which probably reflected iocreased left ventricular mass. It is suggested that while left veotric ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.