Conduction System of the Heart
... and A-V junctional fibers proximal to A-V node. Causes hyperpolarization because of increased K+ permeability in response to acetylcholine. This causes decreased transmission of impulses maybe temporarily stopping heart rate. ...
... and A-V junctional fibers proximal to A-V node. Causes hyperpolarization because of increased K+ permeability in response to acetylcholine. This causes decreased transmission of impulses maybe temporarily stopping heart rate. ...
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... the risk of VTE [12]. In addition to thrombophilias that may be seen in some subsets of patients with ACHD, VTE risk may also be related to limited mobility, particularly in patients with class III or IV symptoms. Additionally, VTE in patients with ACHD could be due to specific hemodynamic and flow ...
... the risk of VTE [12]. In addition to thrombophilias that may be seen in some subsets of patients with ACHD, VTE risk may also be related to limited mobility, particularly in patients with class III or IV symptoms. Additionally, VTE in patients with ACHD could be due to specific hemodynamic and flow ...
AED pre read Handout
... ventricles no longer pump effectively. This can be due to a variety of reasons. When the sino-atrial node stops firing the ventricles usually begin to quiver in a rapid unorganized rhythm that is incapable of actually pumping any blood out of the heart. This appears as ventricular fibrillation. This ...
... ventricles no longer pump effectively. This can be due to a variety of reasons. When the sino-atrial node stops firing the ventricles usually begin to quiver in a rapid unorganized rhythm that is incapable of actually pumping any blood out of the heart. This appears as ventricular fibrillation. This ...
Cardiac rehabilitation II
... during less-than-ordinary activity, e.g. walking short distances (20–100 m). Comfortable only at rest. ...
... during less-than-ordinary activity, e.g. walking short distances (20–100 m). Comfortable only at rest. ...
Christian T. Ruff Stroke Prevention in Atrial Fibrillation doi: 10.1161
... is sent at regular intervals, we normally have a regular heartbeat. In AF, instead of a single regular signal, there are multiple electric signals. Although not all of these extra signals are able to activate the electric system of the heart, some of them do. This usually leads to an irregular and f ...
... is sent at regular intervals, we normally have a regular heartbeat. In AF, instead of a single regular signal, there are multiple electric signals. Although not all of these extra signals are able to activate the electric system of the heart, some of them do. This usually leads to an irregular and f ...
234 Electrocardio
... Read through all of the following passage and then fill in the spaces with the most appropriate word or words. The cardiac cycle is initiated and controlled by the heart itself. Cardiac muscle is said to be ......................... since it will contract and relax of its own accord. The beat is ini ...
... Read through all of the following passage and then fill in the spaces with the most appropriate word or words. The cardiac cycle is initiated and controlled by the heart itself. Cardiac muscle is said to be ......................... since it will contract and relax of its own accord. The beat is ini ...
Heart Failure With Normal Ejection Fraction
... 0.055) and hospitalization for HF (HR, 0.628; 95% CI, 0.408–0.966; P = 0.033) were observed in those assigned to perindopril. The CHARM-Preserved trial [25] looked at patients with chronic HF (CHF) and a preserved LVEF to study the effects of angiotensin receptor blockade (candesartan) on cardiovasc ...
... 0.055) and hospitalization for HF (HR, 0.628; 95% CI, 0.408–0.966; P = 0.033) were observed in those assigned to perindopril. The CHARM-Preserved trial [25] looked at patients with chronic HF (CHF) and a preserved LVEF to study the effects of angiotensin receptor blockade (candesartan) on cardiovasc ...
Heart - WordPress.com
... Lies to the left of the midline in the mediastinum In the pericardial cavity surrounded by pericardium Sits at an angle to the longitudinal axis Rotated toward the left side Base- the broad superior portion of the heart where it attaches to major arteries and veins of the pulmonary and sys ...
... Lies to the left of the midline in the mediastinum In the pericardial cavity surrounded by pericardium Sits at an angle to the longitudinal axis Rotated toward the left side Base- the broad superior portion of the heart where it attaches to major arteries and veins of the pulmonary and sys ...
Factsheet - Ectopic heartbeats (160201)
... the doctor would initially use a simple medication such as a beta blocker (for example bisoprolol). In patients with asthma or bronchitis, such medicines cannot be used, and an alternative such as a calcium channel blocker (for example diltiazem) may be considered. In an otherwise healthy individual ...
... the doctor would initially use a simple medication such as a beta blocker (for example bisoprolol). In patients with asthma or bronchitis, such medicines cannot be used, and an alternative such as a calcium channel blocker (for example diltiazem) may be considered. In an otherwise healthy individual ...
Chapter 14 PPT
... Pacemakers (5 of 6) • Automatic implantable cardiac defibrillators (AICDs) – Used by some patients who have survived cardiac arrest due to ventricular fibrillation – Monitor heart rhythm and shock as needed. – Treat chest pain patients with AICDs like they are experiencing a heart attack. ...
... Pacemakers (5 of 6) • Automatic implantable cardiac defibrillators (AICDs) – Used by some patients who have survived cardiac arrest due to ventricular fibrillation – Monitor heart rhythm and shock as needed. – Treat chest pain patients with AICDs like they are experiencing a heart attack. ...
ABC of clinical electrocardiography Introduction. I
... The six chest leads (V1 to V6) “view” the heart in the horizontal plane. The information from the limb electrodes is combined to produce the six limb leads (I, II, III, aVR, aVL, and aVF), which view the heart in the vertical plane. The information from these 12 leads is combined to form a ...
... The six chest leads (V1 to V6) “view” the heart in the horizontal plane. The information from the limb electrodes is combined to produce the six limb leads (I, II, III, aVR, aVL, and aVF), which view the heart in the vertical plane. The information from these 12 leads is combined to form a ...
News
... might be some heating under the MRI, but the heating could be suppressed considerably by the ‘conditional’ devices, and it becomes clinically irrelevant in a defined condition. According to the Medtronic brochure, the CapSureFix® lead has a decreased number of coiled filars and increased winding tur ...
... might be some heating under the MRI, but the heating could be suppressed considerably by the ‘conditional’ devices, and it becomes clinically irrelevant in a defined condition. According to the Medtronic brochure, the CapSureFix® lead has a decreased number of coiled filars and increased winding tur ...
- Wiley Online Library
... p < 0.0001). Allopurinol may just be a surrogate marker for a different pattern or quality of care rather than an effective treatment to reduce cardiovascular risk. Differences amongst studies might also reflect the dose of allopurinol used. There are several limitations to this analysis. Most RCTs w ...
... p < 0.0001). Allopurinol may just be a surrogate marker for a different pattern or quality of care rather than an effective treatment to reduce cardiovascular risk. Differences amongst studies might also reflect the dose of allopurinol used. There are several limitations to this analysis. Most RCTs w ...
Document
... atria and left ventricle). The left ventricle has a greater workload and is much more massive than the right ventricle, but the two chambers pump equal amounts of blood. AV valves prevent backflow from the ventricles into the atria, and semilunar valves prevent backflow from the aortic and pulmonary ...
... atria and left ventricle). The left ventricle has a greater workload and is much more massive than the right ventricle, but the two chambers pump equal amounts of blood. AV valves prevent backflow from the ventricles into the atria, and semilunar valves prevent backflow from the aortic and pulmonary ...
VT IN NORMAL AND ABNORMAL HEARTS
... • VT of myocardial origin vs BBR-LB pattern – rapid intrinsicoid deflection - initial ventricular activation through the HPS ...
... • VT of myocardial origin vs BBR-LB pattern – rapid intrinsicoid deflection - initial ventricular activation through the HPS ...
Tetralogy of Fallot
... Intravenous induction with Ketamine has been advocated (vs inhalational induction) in the past, with the aim of preserving SVR and avoiding hypercyanotic attacks. However, it is generally accepted that the choice of drug or method of induction is less important than careful dose titration and durati ...
... Intravenous induction with Ketamine has been advocated (vs inhalational induction) in the past, with the aim of preserving SVR and avoiding hypercyanotic attacks. However, it is generally accepted that the choice of drug or method of induction is less important than careful dose titration and durati ...
A young oligosymptomatic male patient with right atrial myxoma who
... adults, but it represents only the 10–15% of cardiac tumors in the pediatric age. They are more frequently localized in the left atrium (75% of cases), rarely in the right atrium (20%) and occasionally in the ventricules. Myxoma most often occur in people between the third and sixth decades of life, ...
... adults, but it represents only the 10–15% of cardiac tumors in the pediatric age. They are more frequently localized in the left atrium (75% of cases), rarely in the right atrium (20%) and occasionally in the ventricules. Myxoma most often occur in people between the third and sixth decades of life, ...
Takotsubo cardiomyopathy
... Three patients were directly hospitalized at Skejby Hospital, while four patients were transferred from local hospitals. Cases were reviewed and included in this study if the cardiologists (EHC, BLN) came to agreement about the diagnosis. Information about the clinical presentation, electrocardiogra ...
... Three patients were directly hospitalized at Skejby Hospital, while four patients were transferred from local hospitals. Cases were reviewed and included in this study if the cardiologists (EHC, BLN) came to agreement about the diagnosis. Information about the clinical presentation, electrocardiogra ...
Tricuspid Valve Dysplasia in Dogs
... opposite direction. In dogs with TVD, some blood is permitted to “leak” backward from the right ventricle into the right atrium. This is called tricuspid valvular regurgitation, or simply tricuspid regurgitation. ...
... opposite direction. In dogs with TVD, some blood is permitted to “leak” backward from the right ventricle into the right atrium. This is called tricuspid valvular regurgitation, or simply tricuspid regurgitation. ...
General Heart Failure
... In patients with HFpEF, the ventricles are unable to relax properly when the heart contracts. Consequently, during filling, less blood enters the heart and the ejection fraction may be considered normal1 There is no consensus concerning the cut-off for preserved LVEF2 Approximately half of pat ...
... In patients with HFpEF, the ventricles are unable to relax properly when the heart contracts. Consequently, during filling, less blood enters the heart and the ejection fraction may be considered normal1 There is no consensus concerning the cut-off for preserved LVEF2 Approximately half of pat ...
Complete Revascularization in Patients with Severe Left Ventricular
... Patients with poor LV function caused by coronary artery disease increasingly have a third treatment option; myocardial revascularization. Cardiac transplantation is very effective, but limited by donor availability,6,11) and medical treatment of such patients is associated with poor results.5) As m ...
... Patients with poor LV function caused by coronary artery disease increasingly have a third treatment option; myocardial revascularization. Cardiac transplantation is very effective, but limited by donor availability,6,11) and medical treatment of such patients is associated with poor results.5) As m ...
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[Recovered] @2 (vishdess1-PC`s conflicted copy
... • The force of contraction of cardiac muscle is dependent upon its preloading and afterloading • In vivo the preload is the degree to which the myocardium is stretched before it contracts • The afterload is the resistance against which blood is expelled (the blood pressure) ...
... • The force of contraction of cardiac muscle is dependent upon its preloading and afterloading • In vivo the preload is the degree to which the myocardium is stretched before it contracts • The afterload is the resistance against which blood is expelled (the blood pressure) ...
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.