product monograph nitroglycerin in 5
... Intravenous nitroglycerin reduced central venous pressure (CVP), right arterial pressure (RAP), pulmonary arterial pressure (PAP), pulmonary-capillary wedge pressure (PCWP), pulmonary vascular resistance (PVR), and systemic vascular resistance (SVR). When these parameters were elevated, reducing th ...
... Intravenous nitroglycerin reduced central venous pressure (CVP), right arterial pressure (RAP), pulmonary arterial pressure (PAP), pulmonary-capillary wedge pressure (PCWP), pulmonary vascular resistance (PVR), and systemic vascular resistance (SVR). When these parameters were elevated, reducing th ...
Cardiac Flow Analysis Applied to Phase Contrast Magnetic
... tools described in this paper. The initial stage involves performing phase contrast MRI of the heart at short axis through the atria. The blood motion can be mapped in two dimension based on combination of the velocity signal maps pertaining to two directions. Vorticity in the flow is computed and ma ...
... tools described in this paper. The initial stage involves performing phase contrast MRI of the heart at short axis through the atria. The blood motion can be mapped in two dimension based on combination of the velocity signal maps pertaining to two directions. Vorticity in the flow is computed and ma ...
Three-Dimensional Transesophageal Echocardiography Is a Major
... displayed (Fig. 6A) (Video 2, see Supplemental Digital Content 2, http://links.lww.com/AA/A83; see Video 2 legend at Appendix 1, http://links.lww.com/AA/A104) as left (baseline) and right panels. Alternatively, the image on the right panel display changes by rotating the multiplane angle (Fig. 6B) o ...
... displayed (Fig. 6A) (Video 2, see Supplemental Digital Content 2, http://links.lww.com/AA/A83; see Video 2 legend at Appendix 1, http://links.lww.com/AA/A104) as left (baseline) and right panels. Alternatively, the image on the right panel display changes by rotating the multiplane angle (Fig. 6B) o ...
Signal Processing Methods for Heart Rate Variability
... Heart rate variability (HRV), the changes in the beat-to-beat heart rate calculated from the electrocardiogram (ECG), is a key indicator of an individual’s cardiovascular condition. Assessment of HRV has been shown to aid clinical diagnosis and intervention strategies. However, the variety of HRV es ...
... Heart rate variability (HRV), the changes in the beat-to-beat heart rate calculated from the electrocardiogram (ECG), is a key indicator of an individual’s cardiovascular condition. Assessment of HRV has been shown to aid clinical diagnosis and intervention strategies. However, the variety of HRV es ...
Diminished stroke volume during inspiration
... effecting stroke volume and that the decline in this effective left ventricular ejection pressure is responsible for the inspiratory fall in stroke volume through a reverse thoracic pump mechanism. Circulation 72, No. 3, 668-679, 1985. ...
... effecting stroke volume and that the decline in this effective left ventricular ejection pressure is responsible for the inspiratory fall in stroke volume through a reverse thoracic pump mechanism. Circulation 72, No. 3, 668-679, 1985. ...
Atrial Rhythms
... Sinus tachycardia is characterized by an increase in the rate of discharge of the sinus ...
... Sinus tachycardia is characterized by an increase in the rate of discharge of the sinus ...
Coronary Artery Spasm: Review and Update
... completely occluded, or when a small artery is completely occluded [30]. This situation occurs in many cases of unstable angina/non–ST-elevation myocardial infarction. A previous study has shown that 45% of patients with angina at rest and ST-segment depression alone had CAS [15]. In addition to ST- ...
... completely occluded, or when a small artery is completely occluded [30]. This situation occurs in many cases of unstable angina/non–ST-elevation myocardial infarction. A previous study has shown that 45% of patients with angina at rest and ST-segment depression alone had CAS [15]. In addition to ST- ...
Left ventricular hypertrophy and the insulin resistance
... no longer considered compensatory or physiologic, but pathologic27. However, the repertoire of stimuli that may cause LVH stretches far beyond hemodynamic ones, and is yet largely unknown. ...
... no longer considered compensatory or physiologic, but pathologic27. However, the repertoire of stimuli that may cause LVH stretches far beyond hemodynamic ones, and is yet largely unknown. ...
2014 AHA/ACC/HRS Guideline for the Management of - GT
... CM, Yancy CW, 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2014.03.022. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers ...
... CM, Yancy CW, 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2014.03.022. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers ...
On the Utility of T-Wave Amplitude
... innervated by those nerves, and to alter the ventricular repolarization pattern and normal cancellation effects. Based on these complicating factors, it seems apparent that the effects of any unilateral stimulation on the T-wave will be markedly artificial because: a) such stimulation will reduce th ...
... innervated by those nerves, and to alter the ventricular repolarization pattern and normal cancellation effects. Based on these complicating factors, it seems apparent that the effects of any unilateral stimulation on the T-wave will be markedly artificial because: a) such stimulation will reduce th ...
On the Utility of T-Wave Amplitude: A Reply to Schwartz and Weiss
... innervated by those nerves, and to alter the ventricular repolarization pattern and normal cancellation effects. Based on these complicating factors, it seems apparent that the effects of any unilateral stimulation on the T-wave will be markedly artificial because: a) such stimulation will reduce th ...
... innervated by those nerves, and to alter the ventricular repolarization pattern and normal cancellation effects. Based on these complicating factors, it seems apparent that the effects of any unilateral stimulation on the T-wave will be markedly artificial because: a) such stimulation will reduce th ...
2014 AHA/ACC/HRS Guideline for the Management of - Med-IQ
... 1.2. Organization of the Writing Committee ....................................................................................................................... 9 1.3. Document Review and Approval ..................................................................................................... ...
... 1.2. Organization of the Writing Committee ....................................................................................................................... 9 1.3. Document Review and Approval ..................................................................................................... ...
The Combinatorial Activities of Nkx2.5 and dHAND Are Essential for
... was identical to that of complete Csx/Nkx2.5 mutants recently described (Tanaka et al., 1999). In dHAND ⫺/⫺ mutants, the future right ventricular segment was hypoplastic as reported previously (Srivastava et al., 1997), with a single left ventricle and common atrial segment remaining (Figs. 1C, 1G, ...
... was identical to that of complete Csx/Nkx2.5 mutants recently described (Tanaka et al., 1999). In dHAND ⫺/⫺ mutants, the future right ventricular segment was hypoplastic as reported previously (Srivastava et al., 1997), with a single left ventricle and common atrial segment remaining (Figs. 1C, 1G, ...
Relation Between Shock-Related Myocardial Injury and
... Conclusions Our results suggest that these specific biphasic waveforms are associated with less injurious effects on myocardial oxidative metabolism and hemodynamic performance. Given their higher defibrillation efficacy as well, biphasic waveforms may provide important long-term benefits in patient ...
... Conclusions Our results suggest that these specific biphasic waveforms are associated with less injurious effects on myocardial oxidative metabolism and hemodynamic performance. Given their higher defibrillation efficacy as well, biphasic waveforms may provide important long-term benefits in patient ...
Valvular-ventricular interaction: importance of the
... chronic mitral regurgitation are not observed in patients undergoing conventional mitral valve replacement for mitral stenosis.' Therefore the importance of the mitral apparatus in left ventricular function is difficult to ascertain from these clinical studies. Interpretation of these data is diffic ...
... chronic mitral regurgitation are not observed in patients undergoing conventional mitral valve replacement for mitral stenosis.' Therefore the importance of the mitral apparatus in left ventricular function is difficult to ascertain from these clinical studies. Interpretation of these data is diffic ...
PCI in Specific Clinical Situations - Journal of the American College
... intermediate risk of PCI procedural complications and an intermediate to high likelihood of good long-term outcome (e.g., low-intermediate SYNTAX score of <33, bifurcation left main CAD); and 2) clinical characteristics that predict an increased risk of adverse surgical outcomes (e.g., moderate-seve ...
... intermediate risk of PCI procedural complications and an intermediate to high likelihood of good long-term outcome (e.g., low-intermediate SYNTAX score of <33, bifurcation left main CAD); and 2) clinical characteristics that predict an increased risk of adverse surgical outcomes (e.g., moderate-seve ...
Accepted Manuscript
... CM, Yancy CW, 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2014.03.022. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers ...
... CM, Yancy CW, 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2014.03.022. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers ...
Haemodynamic evaluation of pulmonary hypertension
... and right heart function. When the adaptive mechanisms of right ventricular dilatation and hypertrophy cannot compensate for the haemodynamic burden, right heart failure occurs and is associated with poor prognosis. The haemodynamic profile is the major determinant of prognosis. In both primary and ...
... and right heart function. When the adaptive mechanisms of right ventricular dilatation and hypertrophy cannot compensate for the haemodynamic burden, right heart failure occurs and is associated with poor prognosis. The haemodynamic profile is the major determinant of prognosis. In both primary and ...
2011 Guideline Slides PCI - American College of Cardiology
... intermediate risk of PCI procedural complications and an intermediate to high likelihood of good long-term outcome (e.g., low-intermediate SYNTAX score of <33, bifurcation left main CAD); and 2) clinical characteristics that predict an increased risk of adverse surgical outcomes (e.g., moderate-seve ...
... intermediate risk of PCI procedural complications and an intermediate to high likelihood of good long-term outcome (e.g., low-intermediate SYNTAX score of <33, bifurcation left main CAD); and 2) clinical characteristics that predict an increased risk of adverse surgical outcomes (e.g., moderate-seve ...
Development and validation of an algorithm to
... right atrial flutter, “lower loop reentry” has been the term proposed for counterclockwise reentry around the inferior vena cava where the anterior arm of the circuit is the inferior vena cava - tricuspid valve isthmus and the posterior arm is the low posterior right atrium wall with conduction acro ...
... right atrial flutter, “lower loop reentry” has been the term proposed for counterclockwise reentry around the inferior vena cava where the anterior arm of the circuit is the inferior vena cava - tricuspid valve isthmus and the posterior arm is the low posterior right atrium wall with conduction acro ...
Atrial Flutter: Mechanisms, Clinical Features and Management
... comprises the septum and the right atrial free wall as the main components. Both are connected by the isthmus lying between the orifice of the inferior cava vein and the tricuspid annulus. The septal end of the isthmus includes the triangle of Koch bordered by the coronary sinus ostium, the tendon o ...
... comprises the septum and the right atrial free wall as the main components. Both are connected by the isthmus lying between the orifice of the inferior cava vein and the tricuspid annulus. The septal end of the isthmus includes the triangle of Koch bordered by the coronary sinus ostium, the tendon o ...
To Close or Not to Close: The Very Small Patent Ductus Arteriosus
... 1). One patient’s preoperative course was complicated by bacterial IE, which responded to preoperative antibiotics. Surgery was successful in all 15 patients; however, one patient died from a cerebral infarction sustained perioperatively, and another died 8 months postoperatively from heart failure. ...
... 1). One patient’s preoperative course was complicated by bacterial IE, which responded to preoperative antibiotics. Surgery was successful in all 15 patients; however, one patient died from a cerebral infarction sustained perioperatively, and another died 8 months postoperatively from heart failure. ...
NCD Watch August 2016
... Ethnicity — Atrial fibrillation is more common in Whites than in other racial groups, such as Blacks and Asians.11, 15 For example, a U.S. study found that Whites had 32% increased risk of atrial fibrillation at age 50 compared with non-Whites.15 Cardiovascular diseases, such as hypertension, corona ...
... Ethnicity — Atrial fibrillation is more common in Whites than in other racial groups, such as Blacks and Asians.11, 15 For example, a U.S. study found that Whites had 32% increased risk of atrial fibrillation at age 50 compared with non-Whites.15 Cardiovascular diseases, such as hypertension, corona ...
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.