ECG-gated multidetector-row computed tomography in the
... is in accordance to the in vivo study by Van der Vleuten et al. [22] . The study by Bastarrika et al. on transplant patients demonstrated the reliability of LV function quantification in individuals with high heart rates [23] . According to Busch et al. [24] , the observed nonsignificant difference ...
... is in accordance to the in vivo study by Van der Vleuten et al. [22] . The study by Bastarrika et al. on transplant patients demonstrated the reliability of LV function quantification in individuals with high heart rates [23] . According to Busch et al. [24] , the observed nonsignificant difference ...
Surface ECG Markers may Predict Impending Atrial Fibrillation after
... yet, a reliable predictor of AF has not been identified. Our study identified a shortening of postoperative ARI’s (surrogate marker for increased sympathetic tone to the heart) in patients who developed POAF on POD1. Additionally, there was a decrease in both short-term HRV and the short to long-ter ...
... yet, a reliable predictor of AF has not been identified. Our study identified a shortening of postoperative ARI’s (surrogate marker for increased sympathetic tone to the heart) in patients who developed POAF on POD1. Additionally, there was a decrease in both short-term HRV and the short to long-ter ...
Precordial and Carotid Pulse Palpation
... with the distal palm or ball of the hand pressed firmly against the precordium. Thrills may accompany murmurs, such as those associated with aortic stenosis, patent ductus arteriosus, and ventricular septal defect. The detection of thrills can help in differentiating grade 3 from grade 4 murmurs; th ...
... with the distal palm or ball of the hand pressed firmly against the precordium. Thrills may accompany murmurs, such as those associated with aortic stenosis, patent ductus arteriosus, and ventricular septal defect. The detection of thrills can help in differentiating grade 3 from grade 4 murmurs; th ...
EKG review 2 student
... Your patient is having more Ps than QRS, the ratio is 2:1, what is the best way to determine if your patient is in Mobitz I or Mobitz II? ...
... Your patient is having more Ps than QRS, the ratio is 2:1, what is the best way to determine if your patient is in Mobitz I or Mobitz II? ...
Manifestations Mimicking Acute Myocardial Infarction after
... hymenoptera venoms have been isolated.9 All these substances can provoke ischemia and even myocardial injury via profound hypotension or by increasing oxygen demands through direct inotropic and chronotropic effects in the presence of compromised myocardial supply. Electrocardiographic changes consi ...
... hymenoptera venoms have been isolated.9 All these substances can provoke ischemia and even myocardial injury via profound hypotension or by increasing oxygen demands through direct inotropic and chronotropic effects in the presence of compromised myocardial supply. Electrocardiographic changes consi ...
Early history of the pre
... a human autopsy specimen. The patient was a 16year-old boy with episodes of paroxysmal tachycardia. Three years after the initial presentation, he presented with palpitations, severe substernal distress, and a heart rate over 150 beats per minute (bpm). The patient died 2 h later after drinking cold ...
... a human autopsy specimen. The patient was a 16year-old boy with episodes of paroxysmal tachycardia. Three years after the initial presentation, he presented with palpitations, severe substernal distress, and a heart rate over 150 beats per minute (bpm). The patient died 2 h later after drinking cold ...
In vivo dispersion in repolarization and arrhythmias in - AJP
... Durrer and colleagues (12) described in 1970 the total activation of the normal human heart in great detail. Had they looked another 350 ms later in their recordings, we would now know the repolarization pattern of the human heart at the same accuracy (9). Our present understanding is that at 1 Hz t ...
... Durrer and colleagues (12) described in 1970 the total activation of the normal human heart in great detail. Had they looked another 350 ms later in their recordings, we would now know the repolarization pattern of the human heart at the same accuracy (9). Our present understanding is that at 1 Hz t ...
Ultrasonic Measurements of Left Ventricular Wall Thickness*
... series the largest difference between ultrasound and angiography was in a patient with valvular aortic stenosis (Table 1, Case 2), a disease known to present considerable subvalvular hypertrophy not necessarily evenly distributed. Comparative measurements in animal experiments by inserting a needle ...
... series the largest difference between ultrasound and angiography was in a patient with valvular aortic stenosis (Table 1, Case 2), a disease known to present considerable subvalvular hypertrophy not necessarily evenly distributed. Comparative measurements in animal experiments by inserting a needle ...
Pitfalls of Atrial Advancement Using a Ventricular Extra
... enough time to reach the AP and affect the AVRT circuit when delivered late enough to be His-refractory. For example, failing to demonstrate a left lateral AP by a VES from the RV apex frequently occurs in clinical electrophysiological studies. On the contrary, the development of bundle branch block ...
... enough time to reach the AP and affect the AVRT circuit when delivered late enough to be His-refractory. For example, failing to demonstrate a left lateral AP by a VES from the RV apex frequently occurs in clinical electrophysiological studies. On the contrary, the development of bundle branch block ...
Wound model of myocardial infarction - AJP
... quantifies remodeling of the heart, which may ultimately result in heart failure, arrhythmias, and sudden death (8). Standard therapy today tries to prevent remodeling and its prognostic consequences by reducing cardiac preload and afterload and preventing hypertrophy and fibrosis in residual surviv ...
... quantifies remodeling of the heart, which may ultimately result in heart failure, arrhythmias, and sudden death (8). Standard therapy today tries to prevent remodeling and its prognostic consequences by reducing cardiac preload and afterload and preventing hypertrophy and fibrosis in residual surviv ...
Evaluation of left ventricular function in patients with chronic
... primary pulmonary arterial hypertension [5]. The results presented in this study clearly indicate the impaired diastolic function in the studied patient group. Moreover, there was a strong correlation between the level of impairment of diastolic function and the level of pressure in the pulmonary ar ...
... primary pulmonary arterial hypertension [5]. The results presented in this study clearly indicate the impaired diastolic function in the studied patient group. Moreover, there was a strong correlation between the level of impairment of diastolic function and the level of pressure in the pulmonary ar ...
SUDDEN DEATH IN YOUNG ATHLETES
... always has a tragic impact because it occurs in apparently healthy individuals and assumes great visibility through the news media, due to the high public profile of competitive athletes [1-4]. For centuries it was a mystery why cardiac arrest should occur in vigorous athletes, who had previously ac ...
... always has a tragic impact because it occurs in apparently healthy individuals and assumes great visibility through the news media, due to the high public profile of competitive athletes [1-4]. For centuries it was a mystery why cardiac arrest should occur in vigorous athletes, who had previously ac ...
Supraventricular Arrhythmias
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
Rate Control in Atrial Fibrillation: Avoiding Morbidity
... shortness of breath which could be the result of other processes such as pulmonary disease, obesity or deconditioning. In these cases we often pursue a rhythm control strategy and fall back to rate control if symptoms do not improve when sinus rhythm is restored. Other challenges include patients wi ...
... shortness of breath which could be the result of other processes such as pulmonary disease, obesity or deconditioning. In these cases we often pursue a rhythm control strategy and fall back to rate control if symptoms do not improve when sinus rhythm is restored. Other challenges include patients wi ...
Diastolic mitral regurgitation: a borderline case in cardiovascular
... marathon-running. They all were healthy and had not been taking drugs for over 1 year. Lab tests all within normal range (Tables IA, IIA, IIIA). No diastolic flow at the atrio-ventricular valves, from ventricle to atrium, was found either in Gr. A or in Gr. B45. ...
... marathon-running. They all were healthy and had not been taking drugs for over 1 year. Lab tests all within normal range (Tables IA, IIA, IIIA). No diastolic flow at the atrio-ventricular valves, from ventricle to atrium, was found either in Gr. A or in Gr. B45. ...
Length-Circumference Relations of the Left Ventricle
... activity such as changes in position, eating, startle and exercise. In most of the animals, at least one of the gages failed during the first week due to the stress of the repetitive stretch, but in one animal, both gages functioned reliably until the animal was sacrificed 19 days after the operatio ...
... activity such as changes in position, eating, startle and exercise. In most of the animals, at least one of the gages failed during the first week due to the stress of the repetitive stretch, but in one animal, both gages functioned reliably until the animal was sacrificed 19 days after the operatio ...
VENTRICULAR SEPTAL DEFECT SIMULATING PATENT DUCTUS
... does not have the truly continuous quality of a patent ductus. However, even then the data may be insufficient to differentiate a patent ductus with free pulmonary regurgitation from a high ventricular septal defect of the type described in this paper unless intracardiac pressure recordings are made ...
... does not have the truly continuous quality of a patent ductus. However, even then the data may be insufficient to differentiate a patent ductus with free pulmonary regurgitation from a high ventricular septal defect of the type described in this paper unless intracardiac pressure recordings are made ...
Effects of a Left Ventricular Assist Device with a Centrifugal Pump on
... the pump circuit clamped (control). The clamp then was removed and the pump activated. Motor speed was increased until the assist rate (pump flow/total flow; total flow = native flow + pump flow) was approximately 25%. A stabilization period of 30 minutes was allowed before each set of data recordin ...
... the pump circuit clamped (control). The clamp then was removed and the pump activated. Motor speed was increased until the assist rate (pump flow/total flow; total flow = native flow + pump flow) was approximately 25%. A stabilization period of 30 minutes was allowed before each set of data recordin ...
Management of Arrhythmias - UCL Hospitals Injectable Medicines
... appendage thrombus does not preclude cardioversion ...
... appendage thrombus does not preclude cardioversion ...
Short PR Interval
... pass its message to the ventricles. It is measured from the beginning of the P-wave to the beginning of the QRS complex. The normal PR interval measures 0.12 to 0.20 seconds in duration.1 However, it is important to remember that normal PR intervals are distributed on a bell-shaped curve so that 1%– ...
... pass its message to the ventricles. It is measured from the beginning of the P-wave to the beginning of the QRS complex. The normal PR interval measures 0.12 to 0.20 seconds in duration.1 However, it is important to remember that normal PR intervals are distributed on a bell-shaped curve so that 1%– ...
What is Sudden Death in Athletes
... In congenital anomalies, each variation of normal anatomy may have its specific mechanism of induction of hemodynamic compromise and/or lethal arrhythmias. There are several common mechanisms. For example, in coronary anomalies, either the expansion of the aorta or pulmonary arteries from the increa ...
... In congenital anomalies, each variation of normal anatomy may have its specific mechanism of induction of hemodynamic compromise and/or lethal arrhythmias. There are several common mechanisms. For example, in coronary anomalies, either the expansion of the aorta or pulmonary arteries from the increa ...
PDF file - Via Medica Journals
... blood flow. During prolonged ischemia, the coronary blood flow is usually sufficient for the survival of myocytes, while being insufficient to fully provide for metabolic requirements related to the contraction [2]. Contractility impairment can only be reversed by the means of revascularization [3]. ...
... blood flow. During prolonged ischemia, the coronary blood flow is usually sufficient for the survival of myocytes, while being insufficient to fully provide for metabolic requirements related to the contraction [2]. Contractility impairment can only be reversed by the means of revascularization [3]. ...
AED Frequently Asked Questions (External Audiences) Q What is
... A Sudden cardiac arrest (SCA), one of the leading causes of death in the United States, strikes over 300,000 victims each year, of which about five percent survive. Sudden cardiac arrest cases are usually due to abnormal heart rhythms called arrhythmias, the vast majority of which are ventricular fi ...
... A Sudden cardiac arrest (SCA), one of the leading causes of death in the United States, strikes over 300,000 victims each year, of which about five percent survive. Sudden cardiac arrest cases are usually due to abnormal heart rhythms called arrhythmias, the vast majority of which are ventricular fi ...
Coronary artery bypass surgery in patients with impaired left
... of recovery of wall motion abnormalities during the immediate postoperative period has not been readily available. In this perspective, the present study was designed to evaluate the short-term serial changes in left ventricular performance in patients with impaired left ventricular function after C ...
... of recovery of wall motion abnormalities during the immediate postoperative period has not been readily available. In this perspective, the present study was designed to evaluate the short-term serial changes in left ventricular performance in patients with impaired left ventricular function after C ...
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.