Arrhythmogenic Right Ventricular Dysplasia
... Arrhythmogenic right ventricular dysplasia (ARVD) is a disorder in which normal myocardium is replaced by fibrofatty tissue. This disorder usually involves the right ventricle, but the left ventricle and septum also may be affected. Although the exact prevalence of ARVD is unknown, it is thought to ...
... Arrhythmogenic right ventricular dysplasia (ARVD) is a disorder in which normal myocardium is replaced by fibrofatty tissue. This disorder usually involves the right ventricle, but the left ventricle and septum also may be affected. Although the exact prevalence of ARVD is unknown, it is thought to ...
Strain Rate Acceleration Yields a Better Index for Evaluating Left
... (P < .0001). SRA for normal wall segments changed significantly during the 4 stages (P ⴝ .01) with corresponding changes on high-fidelity left ventricular pressure catheters (r ⴝ 0.92). TVA over normal segments showed no significant change (P ⴝ .29) in the 4 hemodynamic stages. Both TVA and SRA of t ...
... (P < .0001). SRA for normal wall segments changed significantly during the 4 stages (P ⴝ .01) with corresponding changes on high-fidelity left ventricular pressure catheters (r ⴝ 0.92). TVA over normal segments showed no significant change (P ⴝ .29) in the 4 hemodynamic stages. Both TVA and SRA of t ...
Diastolic Heart Function and Myocardial Electrical Instability in
... LVEF, LVEVD, LVESV, and LVM (LVM was calculated using the formula R.Devereux [6]). Further analysis was indexed to body surface area indicators: LVEDVI, LVESVI, IVSI, LA ESVI, and LVMI. As an indication, to the greatest extent reflecting the process of cardiac remodeling, RWT was calculated by the f ...
... LVEF, LVEVD, LVESV, and LVM (LVM was calculated using the formula R.Devereux [6]). Further analysis was indexed to body surface area indicators: LVEDVI, LVESVI, IVSI, LA ESVI, and LVMI. As an indication, to the greatest extent reflecting the process of cardiac remodeling, RWT was calculated by the f ...
Print this article
... cardiomyopathy, which can involve one or both ventricles. Hypocalcemia diminishes myocardial contractility, but the prevalence of congestive heart failure due to hypocalcemia is uncommon [2, 3]. Hypocalcemic cardiomyopathy due to hypoparathyroidism is a very atypical circumstance which is usually in ...
... cardiomyopathy, which can involve one or both ventricles. Hypocalcemia diminishes myocardial contractility, but the prevalence of congestive heart failure due to hypocalcemia is uncommon [2, 3]. Hypocalcemic cardiomyopathy due to hypoparathyroidism is a very atypical circumstance which is usually in ...
The Construction of a Volumetric Cardiac Model for Real-time ECG Simulation
... around the isoelectric line. It begins when the SA node initiates the atrial depolarisation sequence. AV nodal activation occurs within the P wave, although the exact time at which this occurs is not discernable from the ECG. The PR segment represents the slow conduction through the AV node and Bund ...
... around the isoelectric line. It begins when the SA node initiates the atrial depolarisation sequence. AV nodal activation occurs within the P wave, although the exact time at which this occurs is not discernable from the ECG. The PR segment represents the slow conduction through the AV node and Bund ...
Peri-operative Cardiac Arrhythmias
... Relatively minor fluctuations in cardiovascular and haemodynamic parameters due to arrhythmias can have significant long-term implications, especially on the growing population of elderly co-morbid patients undergoing elective and emergency surgery. For example, post-operative atrial fibrillation is ...
... Relatively minor fluctuations in cardiovascular and haemodynamic parameters due to arrhythmias can have significant long-term implications, especially on the growing population of elderly co-morbid patients undergoing elective and emergency surgery. For example, post-operative atrial fibrillation is ...
ATRIAL FIBRILLATION DECISION AID
... the lower chambers (ventricles). This sequence allows priming of the pumping chambers and contributes as much as 20% of the output of the heart. In atrial fibrillation, the heart’s natural pacemaker, the sinus node, no longer generates an electrical impulse. Instead electrical activity occurs irregu ...
... the lower chambers (ventricles). This sequence allows priming of the pumping chambers and contributes as much as 20% of the output of the heart. In atrial fibrillation, the heart’s natural pacemaker, the sinus node, no longer generates an electrical impulse. Instead electrical activity occurs irregu ...
Prevalence of Cardiac Arrhythmia Disorders in Patients with
... There was no significant relationship between gender and types of arrhythmias in the present study. According to the previous studies, a mortality rate in men of the age range 25-34 years were more than in the women .However this rate decreases in the age 75-84 to 1.6 times, which it shows that; the ...
... There was no significant relationship between gender and types of arrhythmias in the present study. According to the previous studies, a mortality rate in men of the age range 25-34 years were more than in the women .However this rate decreases in the age 75-84 to 1.6 times, which it shows that; the ...
Atrial Fibrillation* Reversion to Normal Sinus
... with the first forcible contractions, We feel that this danger Is more apparent than real because we have had many more episodes of embolisation occur in patients who remained In atrial fibrI1latIon,4 ‘urthermore, we cannot agree with the statement that atrlal fibrillation with a slow ventricular ra ...
... with the first forcible contractions, We feel that this danger Is more apparent than real because we have had many more episodes of embolisation occur in patients who remained In atrial fibrI1latIon,4 ‘urthermore, we cannot agree with the statement that atrlal fibrillation with a slow ventricular ra ...
myocardial infarction - THRUTH ALWAYS SATISFY U ( Adeeb ul
... the myocardium. This is most likely to occur in the first week between 3 to 5 days following the initial event, when the myocardium is the softest. The white arrow marks the point of rupture in this anterior-inferior myocardial infarction of the left ventricular free wall and septum. Note the dark r ...
... the myocardium. This is most likely to occur in the first week between 3 to 5 days following the initial event, when the myocardium is the softest. The white arrow marks the point of rupture in this anterior-inferior myocardial infarction of the left ventricular free wall and septum. Note the dark r ...
Progress toward controlling in vivo fibrillating sheep
... dynamical systems displaying temporal instabilities and chaos, where it is now possible to control chaos, delay the onset of bifurcations and instabilities, and direct a trajectory to a desired target state by applying only minute perturbations to the system. The control strategies are quite general ...
... dynamical systems displaying temporal instabilities and chaos, where it is now possible to control chaos, delay the onset of bifurcations and instabilities, and direct a trajectory to a desired target state by applying only minute perturbations to the system. The control strategies are quite general ...
Atrial Fibrillation* Reversion to Normal Sinus Rhythm portions of
... with the first forcible contractions, We feel that this danger Is more apparent than real because we have had many more episodes of embolisation occur in patients who remained In atrial fibrI1latIon,4 ‘urthermore, we cannot agree with the statement that atrlal fibrillation with a slow ventricular ra ...
... with the first forcible contractions, We feel that this danger Is more apparent than real because we have had many more episodes of embolisation occur in patients who remained In atrial fibrI1latIon,4 ‘urthermore, we cannot agree with the statement that atrlal fibrillation with a slow ventricular ra ...
Delayed Presentation of Ventricular Septal Rupture – A Case Report Case Reports
... Without reperfusion therapy VSR usually occurs in the first week. 3,5, 8,9,10 The median time from the onset of symptoms of AMI to rupture is generally 24 hours or less in patients who are receiving thrombolysis.22 ...
... Without reperfusion therapy VSR usually occurs in the first week. 3,5, 8,9,10 The median time from the onset of symptoms of AMI to rupture is generally 24 hours or less in patients who are receiving thrombolysis.22 ...
Working out the heart: Functional remodeling by endurance exercise
... heart rates, which are reached during exercise, thus allowing that cardiac output be compatible with the greater metabolic requirement of the tissues. This is possibly the reason why the rate of decline of the Ca2+ transients and SERCA protein levels have shown correlation with exercise capacity [13 ...
... heart rates, which are reached during exercise, thus allowing that cardiac output be compatible with the greater metabolic requirement of the tissues. This is possibly the reason why the rate of decline of the Ca2+ transients and SERCA protein levels have shown correlation with exercise capacity [13 ...
The Heartbeat
... caused by the atrioventricular valves (bicuspid and tricuspid) closing as the ventricles contract. The “dup” is shorter and sharper. This sound is caused by the semilunar valves (pulmonary and aortic) closing after the blood is pumped out of the ventricles into either the pulmonary artery or the aor ...
... caused by the atrioventricular valves (bicuspid and tricuspid) closing as the ventricles contract. The “dup” is shorter and sharper. This sound is caused by the semilunar valves (pulmonary and aortic) closing after the blood is pumped out of the ventricles into either the pulmonary artery or the aor ...
Case Report Takotsubo Cardiomyopathy and Canalith
... Her only cardiac risk factor was hyperlipidemia, for which she had been taking 20 mg of simvastatin per day. Her family history was negative for cardiac diseases. With the elevated cardiac enzymes and electrocardiography implying acute myocardial infarction, the patient was immediately referred for ...
... Her only cardiac risk factor was hyperlipidemia, for which she had been taking 20 mg of simvastatin per day. Her family history was negative for cardiac diseases. With the elevated cardiac enzymes and electrocardiography implying acute myocardial infarction, the patient was immediately referred for ...
Left Ventricular Function Described in Physical Terms
... stroke is determined by the r.p.m. of the crankshaft. Similarly, there is an inverse relationship between the duration of systole and the heart rate (fig. 1). This relationship tends to be preserved under many different conditions (see figs. 2 and 3), although the reasons are not so apparent in the ...
... stroke is determined by the r.p.m. of the crankshaft. Similarly, there is an inverse relationship between the duration of systole and the heart rate (fig. 1). This relationship tends to be preserved under many different conditions (see figs. 2 and 3), although the reasons are not so apparent in the ...
The Assessment of Left Ventricular Ejection Fraction in Patients with
... the current channel of subgroup 3 gives a record of the R-R interval histogram of the patient’s electrocardiogram directly. This is an important feature, since too great a variation in heart rate makes measurements derived from the superposition of cardiac cycles unreliable. We studied no patients w ...
... the current channel of subgroup 3 gives a record of the R-R interval histogram of the patient’s electrocardiogram directly. This is an important feature, since too great a variation in heart rate makes measurements derived from the superposition of cardiac cycles unreliable. We studied no patients w ...
Print - Circulation Research
... valve-to-apex distance and internal radii remained unchanged. We also found that in the volume-hypertrophied ventricle there was an increase in the valve-to-apex distance, external radii, internal radii, and wall thickness. Although external and internal dimensions increased, the ventricular shape d ...
... valve-to-apex distance and internal radii remained unchanged. We also found that in the volume-hypertrophied ventricle there was an increase in the valve-to-apex distance, external radii, internal radii, and wall thickness. Although external and internal dimensions increased, the ventricular shape d ...
Slide 1
... PRI: Because of the unusual configuration of the P wave ( flutter wave ) and the proximity of the wave to the QRS complex, it is often impossible to determine a PRI in this arrhythmia . Therefore , the PRI is not measured in atrial flutter . ...
... PRI: Because of the unusual configuration of the P wave ( flutter wave ) and the proximity of the wave to the QRS complex, it is often impossible to determine a PRI in this arrhythmia . Therefore , the PRI is not measured in atrial flutter . ...
Cardiac Cycle - Just In Time Medicine
... As you know, each heart beat involves the contraction of all the cardiac muscle cells in the right and left atria, followed by a very brief pause (the AV delay), and then the synchronized contraction of all the ventricular muscle cells. The cardiac ventricles constitute two pumps that work together, ...
... As you know, each heart beat involves the contraction of all the cardiac muscle cells in the right and left atria, followed by a very brief pause (the AV delay), and then the synchronized contraction of all the ventricular muscle cells. The cardiac ventricles constitute two pumps that work together, ...
Evaluation of thyroid dysfunction in patients with paroxysmal atrial
... disease. An episode of AF may be self-limited or require medical intervention for termination. Great importance is given to recognize the first detected episode of AF. When a patient have more than one episode the arrhythmia is considered recurrent (1). ...
... disease. An episode of AF may be self-limited or require medical intervention for termination. Great importance is given to recognize the first detected episode of AF. When a patient have more than one episode the arrhythmia is considered recurrent (1). ...
Jarvik 2000 Heart
... Three sheep died suddenly at 13, 17, and 22 days, respectively, of delayed aortic rupture, not at the anastomosis but at the site of side-clamp application. This problem was addressed by obtaining younger sheep instead of elderly ewes discarded from breeding stock. One died of peritoneal bleeding af ...
... Three sheep died suddenly at 13, 17, and 22 days, respectively, of delayed aortic rupture, not at the anastomosis but at the site of side-clamp application. This problem was addressed by obtaining younger sheep instead of elderly ewes discarded from breeding stock. One died of peritoneal bleeding af ...
INNOVATIVE TECHNIQUES EXPERT COMMENTARY
... bring improved patient outcomes, safety, and efficiency through the technology of robotics. One of the leading robotic technologies is remote magnetic catheter navigation technology (RMT). Recent medical literature contains a number of case reports and series demonstrating the feasibility of this te ...
... bring improved patient outcomes, safety, and efficiency through the technology of robotics. One of the leading robotic technologies is remote magnetic catheter navigation technology (RMT). Recent medical literature contains a number of case reports and series demonstrating the feasibility of this te ...
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.