Longitudinal strain of right ventricular free wall by 2
... Pulmonary hypertension (PH) is severe and life-threatening syndrome associated with poor outcome; therefore, early diagnosis and treatment are important for PH patients to improve their prognosis. A definite diagnosis of PH is required for invasive right heart catheterization (RHC) which does not al ...
... Pulmonary hypertension (PH) is severe and life-threatening syndrome associated with poor outcome; therefore, early diagnosis and treatment are important for PH patients to improve their prognosis. A definite diagnosis of PH is required for invasive right heart catheterization (RHC) which does not al ...
Effects of obstructive sleep apnoea on heart rhythm REVIEW
... In vitro and in vivo studies on myocardial tissue have provided evidence for acute stretch-activated Ca2+ channels which produce functionally significant repolarisation gradients and promote both early and delayed after-depolarisations, thereby predisposing to ventricular arrhythmias [49, 50]. Simil ...
... In vitro and in vivo studies on myocardial tissue have provided evidence for acute stretch-activated Ca2+ channels which produce functionally significant repolarisation gradients and promote both early and delayed after-depolarisations, thereby predisposing to ventricular arrhythmias [49, 50]. Simil ...
Delaying shock for cardiopulmonary resuscitation
... emphasize the importance of rapid defibrillation for all patients with SCD in a shockable rhythm. The American Heart Association ‘chain of survival’ considers defibrillation to be the most important intervention and the ‘strongest link’ in the chain of survival for VF cardiac arrest intervention. Th ...
... emphasize the importance of rapid defibrillation for all patients with SCD in a shockable rhythm. The American Heart Association ‘chain of survival’ considers defibrillation to be the most important intervention and the ‘strongest link’ in the chain of survival for VF cardiac arrest intervention. Th ...
Use of Metoprolol CR/XL to Maintain Sinus Rhythm After Conversion
... Abbreviations and Acronyms DC ⫽ direct current ECG ⫽ electrocardiogram ...
... Abbreviations and Acronyms DC ⫽ direct current ECG ⫽ electrocardiogram ...
Sympathetic and cardiac baroreflex function in panic disorder
... robust indicator of baroreflex control than burst amplitude alone, or burst amplitude and incidence in combination. The mean resting baroreflex gain (slope of the relationship between MSNA and DBP) in their study based on observations in 60 healthy subjects was 3.9% and was similar to that document ...
... robust indicator of baroreflex control than burst amplitude alone, or burst amplitude and incidence in combination. The mean resting baroreflex gain (slope of the relationship between MSNA and DBP) in their study based on observations in 60 healthy subjects was 3.9% and was similar to that document ...
ECG in Ventricular arrhythmias
... ventricular rate exceeds 100 beats/minute VT is an extremely unstable rhythm. It can occur in short, paroxysmal bursts lasting fewer than 30 seconds and causing few or no symptoms. Alternatively, it can be sustained, requiring immediate treatment to prevent death, even in patients initially able to ...
... ventricular rate exceeds 100 beats/minute VT is an extremely unstable rhythm. It can occur in short, paroxysmal bursts lasting fewer than 30 seconds and causing few or no symptoms. Alternatively, it can be sustained, requiring immediate treatment to prevent death, even in patients initially able to ...
Brugada electrocardiographic phenocopy in a patient with chronic
... In the presented case, the patient had no history of sudden death, syncope or arrhythmia. There was no family history of Brugada syndrome. He was on no medication capable of inducing a Brugada phenocopy and had no electrolyte imbalance. The patient had a conduction disorder (LPFB + + complete RBBB) ...
... In the presented case, the patient had no history of sudden death, syncope or arrhythmia. There was no family history of Brugada syndrome. He was on no medication capable of inducing a Brugada phenocopy and had no electrolyte imbalance. The patient had a conduction disorder (LPFB + + complete RBBB) ...
BASIC CARDIAC ARRHYTHMIAS
... This strip was not taken in lead II. The QRS has a somewhat negative deflection and the T wave is inverted simply due to lead placement. This strip was taken in MCL1. ...
... This strip was not taken in lead II. The QRS has a somewhat negative deflection and the T wave is inverted simply due to lead placement. This strip was taken in MCL1. ...
comparison of efficacy of intravenous adenosine and verapamil in
... maneuvers. Group A patients received adenosine 6 milligrams (mg) IV bolus. It was followed by 12mg IV bolus, if PSVT not reverted. Group B patients received verapamil 5mg IV, three consecutive doses at 5 minutes interval till PSVT was reverted into sinus rhythm. Time from the administration of drug ...
... maneuvers. Group A patients received adenosine 6 milligrams (mg) IV bolus. It was followed by 12mg IV bolus, if PSVT not reverted. Group B patients received verapamil 5mg IV, three consecutive doses at 5 minutes interval till PSVT was reverted into sinus rhythm. Time from the administration of drug ...
and diagnosis Ischaemic mitral regurgitation: mechanisms
... The effects of CRT may not relate purely to papillary muscle resynchronisation, and also relates to improvement in dP/dt with CRT therapy.16 This contribution to improved closing forces is evidenced by the acute haemodynamic effect of CRT, before the occurrence of reverse remodelling. The acute decr ...
... The effects of CRT may not relate purely to papillary muscle resynchronisation, and also relates to improvement in dP/dt with CRT therapy.16 This contribution to improved closing forces is evidenced by the acute haemodynamic effect of CRT, before the occurrence of reverse remodelling. The acute decr ...
Straddling mitral valve with hypoplastic right ventricle
... two-dimensional echacardiographic features from Cases 2 and 3 are presented in Figure 1. Representative angioeardiograms from the same cases are shown in Figures 3 and 4. Portmonem morphologic findings in the two autopsy eases are summarized in Table 2. Photographs of the heart specimen from Case 5 ...
... two-dimensional echacardiographic features from Cases 2 and 3 are presented in Figure 1. Representative angioeardiograms from the same cases are shown in Figures 3 and 4. Portmonem morphologic findings in the two autopsy eases are summarized in Table 2. Photographs of the heart specimen from Case 5 ...
Palpitation
... Sometimes, an exercise ECG is used to analyse any abnormalities with your heart rhythm. Here, an ECG recording is taken while you are exercising on a treadmill or stationary bike. If your palpitations happen very often but not often enough to be recorded on an ordinary ECG, your medical team will r ...
... Sometimes, an exercise ECG is used to analyse any abnormalities with your heart rhythm. Here, an ECG recording is taken while you are exercising on a treadmill or stationary bike. If your palpitations happen very often but not often enough to be recorded on an ordinary ECG, your medical team will r ...
Determination of anaerobic threshold for assessment of
... and within the last minute of each stage of the exercise. Blood lactate was measured by an electrochemical enzymatic method'2 with the Lactate Analyzer 640 (Roche Bioelectronics). Determination of anaerobic threshold. Anaerobic threshold was defined as the '92 during exercise at which the blood lact ...
... and within the last minute of each stage of the exercise. Blood lactate was measured by an electrochemical enzymatic method'2 with the Lactate Analyzer 640 (Roche Bioelectronics). Determination of anaerobic threshold. Anaerobic threshold was defined as the '92 during exercise at which the blood lact ...
growth and development
... Failure of the ductus arteriosus to close normally in the newborn period may be due to a congenital abnormality of the ductus or to severe prematurity. ...
... Failure of the ductus arteriosus to close normally in the newborn period may be due to a congenital abnormality of the ductus or to severe prematurity. ...
Pharmacoinvasive Strategy Versus Primary Percutaneous Coronary
... STEMI was defined as chest pain suggestive of myocardial ischemia for ≈30 minutes, ST-segment elevation >0.1 mV in ≥2 contiguous leads, or new or presumably new left bundle-branch block on the 12-lead ECG and elevated cardiac markers (creatine kinase-MB or troponin I/T). PPCI was defined as PCI with ...
... STEMI was defined as chest pain suggestive of myocardial ischemia for ≈30 minutes, ST-segment elevation >0.1 mV in ≥2 contiguous leads, or new or presumably new left bundle-branch block on the 12-lead ECG and elevated cardiac markers (creatine kinase-MB or troponin I/T). PPCI was defined as PCI with ...
The Significance of Changes in Amplitude of the First Heart Sound
... with complete heart block. In any event, accentuation of the first heart sound in the subjects of the present study could scarcely have been due to any additive auricular factor since auricular sounds were inaudible in all. Another commonly encountered belief regarding variations in the intensity of ...
... with complete heart block. In any event, accentuation of the first heart sound in the subjects of the present study could scarcely have been due to any additive auricular factor since auricular sounds were inaudible in all. Another commonly encountered belief regarding variations in the intensity of ...
Antecedent hypertension and myocardial injury in patients with
... clinical course after STEMI [26]. Indeed, in a meta- ...
... clinical course after STEMI [26]. Indeed, in a meta- ...
Print - Circulation
... the same (prespecified) criteria used in the primary data analysis: 0.40 or more and less than 0.40.10 Follow-up After discharge, patients were evaluated every 3 months for 1 year and then every 4 months until trial completion. At each evaluation the center investigator and study coordinator took a ...
... the same (prespecified) criteria used in the primary data analysis: 0.40 or more and less than 0.40.10 Follow-up After discharge, patients were evaluated every 3 months for 1 year and then every 4 months until trial completion. At each evaluation the center investigator and study coordinator took a ...
Optimization of high intensity interval exercise in coronary heart
... HIT has largely been used by elite athletes for training purposes (Billat 2001). Only recently has HIT been studied as a potential mode of cardiac rehabilitation (Rognmo et al. 2004; Warburton et al. 2005; WisloV et al. 2007). In the only two studies performed in CHD patients, interval training was ...
... HIT has largely been used by elite athletes for training purposes (Billat 2001). Only recently has HIT been studied as a potential mode of cardiac rehabilitation (Rognmo et al. 2004; Warburton et al. 2005; WisloV et al. 2007). In the only two studies performed in CHD patients, interval training was ...
Optimal ventricular rate slowing during atrial fibrillation - AJP
... mg/kg iv) and intubated and ventilated with room air supplemented with oxygen as needed to maintain normal arterial blood gases by a respirator (NARKOMED 2, North American Drager; Telford, PA). Anesthesia was then maintained with 1–2% isoflurane throughout the experiment. The left external jugular v ...
... mg/kg iv) and intubated and ventilated with room air supplemented with oxygen as needed to maintain normal arterial blood gases by a respirator (NARKOMED 2, North American Drager; Telford, PA). Anesthesia was then maintained with 1–2% isoflurane throughout the experiment. The left external jugular v ...
Corrected Transposition of the Great Vessels without Associated
... the onset of complete heart block, congestive failure is often superimposed and may be the cause of death. Berben and Adicoffls have reported two cases of corrected transposition without associated defects who developed complete heart block in their mid 30's. In one of these cases, despite an artifi ...
... the onset of complete heart block, congestive failure is often superimposed and may be the cause of death. Berben and Adicoffls have reported two cases of corrected transposition without associated defects who developed complete heart block in their mid 30's. In one of these cases, despite an artifi ...
The Fundamentals of 12 Lead EKG Reviewing the Cardiac
... wave inversion • Injury – ST elevation >1mm in 2 congruent leads • With or without loss of R wave • >2mm in septal leads (V1, V2) • Infarction ...
... wave inversion • Injury – ST elevation >1mm in 2 congruent leads • With or without loss of R wave • >2mm in septal leads (V1, V2) • Infarction ...
Historical Review Accelerated Idioventricular Rhythm: History and
... and Chronology of the Main Discoveries” 1969: Agustín Castellanos Jr [19] used the term "slow ventricular tachycardia" during an acute MI to describe a case of AIVR. Additionally, the authors explained the underlying electrophysiological mechanisms of AIVR. 1973: Rothfeld et al [27] showed for the f ...
... and Chronology of the Main Discoveries” 1969: Agustín Castellanos Jr [19] used the term "slow ventricular tachycardia" during an acute MI to describe a case of AIVR. Additionally, the authors explained the underlying electrophysiological mechanisms of AIVR. 1973: Rothfeld et al [27] showed for the f ...
Cardiac Arrhythmias: Diagnosis and Management. The Tachycardias
... regular, then the ectopic beat has an entry block and ventricular parasystole is said to be present. If every sinus beat is followed by a ventricular ectopic, then ventricular bigeminy is said to be present. If every second sinus beat is followed by a ventricular ectopic, then ventricular trigeminy ...
... regular, then the ectopic beat has an entry block and ventricular parasystole is said to be present. If every sinus beat is followed by a ventricular ectopic, then ventricular bigeminy is said to be present. If every second sinus beat is followed by a ventricular ectopic, then ventricular trigeminy ...
Answers 2-06
... distress syndrome, complete transposition • Machinery like murmur • Reversal of the shunt due to increased pulmonary pressures – Unoxygenated blood enters the aorta below the subclavian artery, produces a pink upper body and cyanotic lower body ...
... distress syndrome, complete transposition • Machinery like murmur • Reversal of the shunt due to increased pulmonary pressures – Unoxygenated blood enters the aorta below the subclavian artery, produces a pink upper body and cyanotic lower body ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.