File - Sewell`s Science Site
... QRS complex represents the depolarization of the ventricles. The repolarization of the atria is buried in the QRS complex. The width of the QRS complex often indicates the location of the originating electrical impulse. Q wave is the first negative deflection of the QRS complex. A normal Q is narrow ...
... QRS complex represents the depolarization of the ventricles. The repolarization of the atria is buried in the QRS complex. The width of the QRS complex often indicates the location of the originating electrical impulse. Q wave is the first negative deflection of the QRS complex. A normal Q is narrow ...
blood pressure and sound
... A number of basic types of sensors are being used commercially for the detection of pressure in the catheter tip. These include various types of straingage systems bonded onto a flexible diaphragm at the catheter tip. Gages of this type are available in the F 5 catheter [1.67 mm outer diameter (OD)] ...
... A number of basic types of sensors are being used commercially for the detection of pressure in the catheter tip. These include various types of straingage systems bonded onto a flexible diaphragm at the catheter tip. Gages of this type are available in the F 5 catheter [1.67 mm outer diameter (OD)] ...
The Heart as a Pump
... often implemented as an animation of the cardiac cycle, which makes the cycle even more difficult to understand than the already complicated one-page diagram included in almost every A&P and physiology text. Both the traditional and multimedia approaches assume that students have some direct experie ...
... often implemented as an animation of the cardiac cycle, which makes the cycle even more difficult to understand than the already complicated one-page diagram included in almost every A&P and physiology text. Both the traditional and multimedia approaches assume that students have some direct experie ...
Infarction in the territory of the medial branch of the posterior
... arises, in this instance, from the anterior and inferior cerebellar artery,'5 as there is a reciprocal relation between these two arteries. At times the sole medial branch participates in the blood supply of the medulla'0 in its dorsal region, and sometimes in the lateral retroolivary area.2 This la ...
... arises, in this instance, from the anterior and inferior cerebellar artery,'5 as there is a reciprocal relation between these two arteries. At times the sole medial branch participates in the blood supply of the medulla'0 in its dorsal region, and sometimes in the lateral retroolivary area.2 This la ...
Prolonged Diastolic Time Fraction Protects Myocardial
... control is only slightly steeper than that with adenosine, indicating a relatively small contribution of vasodilation to the increase in flow at low pressure. Eventually, the flow and DTF reach a new steady state, represented by the continuous curve in Figure 6, which is the best fit for this condit ...
... control is only slightly steeper than that with adenosine, indicating a relatively small contribution of vasodilation to the increase in flow at low pressure. Eventually, the flow and DTF reach a new steady state, represented by the continuous curve in Figure 6, which is the best fit for this condit ...
Role of percutaneous left ventricular assist devices in preventing
... major challenge in acutely ill cardiac patients, especially when cardio–pulmonary resuscitation is performed. There is no indication that catheter-based left ventricular assist devices confer more cerebrovascular complications than current percutaneous angiographic and interventional procedures. Rec ...
... major challenge in acutely ill cardiac patients, especially when cardio–pulmonary resuscitation is performed. There is no indication that catheter-based left ventricular assist devices confer more cerebrovascular complications than current percutaneous angiographic and interventional procedures. Rec ...
Cardio Pulmonary Resuscitation – “Retrieving pulses
... emergency breaths and chest compressions to the unconscious patient. Original techniques for rescue breathing involved the use of mouth-to- mouth resuscitation but they had lot of limitations. This paper gives the review of the various CPR techniques/devices that are available today and how they hav ...
... emergency breaths and chest compressions to the unconscious patient. Original techniques for rescue breathing involved the use of mouth-to- mouth resuscitation but they had lot of limitations. This paper gives the review of the various CPR techniques/devices that are available today and how they hav ...
The Dissection of the Atrioventricular Node
... The chordae tendineae of the medial part of the anterior tricuspid leaflet are now cut and these portions of leaflet detached at their ring base and from the pars membranacea and central fibrous body (fig. iB). The atrial endocardium is removed from the region bounded by the eustachian valve, the co ...
... The chordae tendineae of the medial part of the anterior tricuspid leaflet are now cut and these portions of leaflet detached at their ring base and from the pars membranacea and central fibrous body (fig. iB). The atrial endocardium is removed from the region bounded by the eustachian valve, the co ...
Effects of digitalis on the normal and the failing heart
... dog ouabain causes markedelevationof coronary and total systemic vascular resistance (10). Although cardiac glycosides have a local direct action on vascular smooth muscle, they also act indirectly by causing neurogenically mediated coronary vasoconstriction (2). Patients with heart failure. In pati ...
... dog ouabain causes markedelevationof coronary and total systemic vascular resistance (10). Although cardiac glycosides have a local direct action on vascular smooth muscle, they also act indirectly by causing neurogenically mediated coronary vasoconstriction (2). Patients with heart failure. In pati ...
Roderick Tung, Noel G. Boyle and Kalyanam Shivkumar 2011;123:2284-2288 doi: 10.1161/CIRCULATIONAHA.110.989079
... with cardiomyopathy has been reported, with higher risk at a burden of ⬎20% on Holter analysis.3 Catheter ablation is recommended for patients with symptomatic monomorphic ventricular ectopy when medications are not effective, tolerated, or desired, particularly in those with diminished systolic fun ...
... with cardiomyopathy has been reported, with higher risk at a burden of ⬎20% on Holter analysis.3 Catheter ablation is recommended for patients with symptomatic monomorphic ventricular ectopy when medications are not effective, tolerated, or desired, particularly in those with diminished systolic fun ...
Chapter 9
... The purposes of the cardiovascular system are the following: (1) the transport of O2 to tissues and removal of wastes, (2) the transport of nutrients to tissues, and (3) the regulation of body temperature. The heart is two pumps in one. The right side of the heart pumps blood through the pulmona ...
... The purposes of the cardiovascular system are the following: (1) the transport of O2 to tissues and removal of wastes, (2) the transport of nutrients to tissues, and (3) the regulation of body temperature. The heart is two pumps in one. The right side of the heart pumps blood through the pulmona ...
Restrictive Cardiomyopathy, Constrictive Pericarditis, and Cardiac
... The majority of contemporary cases of nonidiopathic constrictive pericarditis are caused by previous cardiac surgery, radiation exposure, and chronic pericarditis with a myriad of etiologies (31). With the increasing rates of patients undergoing cardiac surgery, the prevalence of constrictive perica ...
... The majority of contemporary cases of nonidiopathic constrictive pericarditis are caused by previous cardiac surgery, radiation exposure, and chronic pericarditis with a myriad of etiologies (31). With the increasing rates of patients undergoing cardiac surgery, the prevalence of constrictive perica ...
Normalization of the EKG in patients with right bundle branch block
... (RVS) are the most frequently described alternative right ventricular pacing sites. Numerous acute haemodynamic studies have shown an improvement in cardiac output with pacing leads placed in these sites and this led to limited work in improving haemodynamic in impaired hearts.2 These sites are theo ...
... (RVS) are the most frequently described alternative right ventricular pacing sites. Numerous acute haemodynamic studies have shown an improvement in cardiac output with pacing leads placed in these sites and this led to limited work in improving haemodynamic in impaired hearts.2 These sites are theo ...
Validation of N-terminal pro-brain natriuretic peptide cut-off values for risk
... vena cava, or an elevated systolic gradient through the tricuspid valve (.30 mmHg) in the absence of left ventricular or mitral valve disease [19, 20]. The sPESI was calculated as suggested by JIMÉNEZ et al. [4] and patients were classified into either a ‘‘low-risk’’ (0 points) or ‘‘high-risk’’ (o1 ...
... vena cava, or an elevated systolic gradient through the tricuspid valve (.30 mmHg) in the absence of left ventricular or mitral valve disease [19, 20]. The sPESI was calculated as suggested by JIMÉNEZ et al. [4] and patients were classified into either a ‘‘low-risk’’ (0 points) or ‘‘high-risk’’ (o1 ...
2009 HF Guidelines: Diagnosis and management of right
... Other etiologies include: – IE, tetralogy of Fallot following surgical repair, carcinoid heart disease, syphilis, dilation of the pulmonary trunk in Marfan syndrome or Takayasu arteritis, medications (methysergide, pergolide, fenfluramine), trauma from right heart instrumentation, as a complication ...
... Other etiologies include: – IE, tetralogy of Fallot following surgical repair, carcinoid heart disease, syphilis, dilation of the pulmonary trunk in Marfan syndrome or Takayasu arteritis, medications (methysergide, pergolide, fenfluramine), trauma from right heart instrumentation, as a complication ...
Program of Cell Survival Underlying Human and Experimental
... another target of HIF-1␣, was not significantly affected (not shown), in contrast to the human samples (Figure 1). The proto-oncogene EGR-1, an immediate/early gene with prosurvival function, was induced after the first episode only, and was not reactivated by further episodes of ischemia/ reperfusi ...
... another target of HIF-1␣, was not significantly affected (not shown), in contrast to the human samples (Figure 1). The proto-oncogene EGR-1, an immediate/early gene with prosurvival function, was induced after the first episode only, and was not reactivated by further episodes of ischemia/ reperfusi ...
International patterns of dual antiplatelet therapy - Heart
... and Cox proportional hazards models were used to relate change in DAPT to CV events. We did not use recurrent events for the present analysis. Follow-up of each patient was divided into time spent before and after change in DAPT. Change from DAPT was entered in the model as a time-updated categorica ...
... and Cox proportional hazards models were used to relate change in DAPT to CV events. We did not use recurrent events for the present analysis. Follow-up of each patient was divided into time spent before and after change in DAPT. Change from DAPT was entered in the model as a time-updated categorica ...
Low-Flow, Low-Gradient Aortic Stenosis With Normal and
... to intrinsic contractility may contribute to the lack of stroke volume increase during DSE, including: 1) afterload mismatch due to an imbalance between the severity of the stenosis and myocardial reserve (33); 2) inadequate increase of myocardial blood flow due to associated CAD; and/or 3) irrevers ...
... to intrinsic contractility may contribute to the lack of stroke volume increase during DSE, including: 1) afterload mismatch due to an imbalance between the severity of the stenosis and myocardial reserve (33); 2) inadequate increase of myocardial blood flow due to associated CAD; and/or 3) irrevers ...
(Level Ib evidence). - The Neurology Report
... Several important and relatively simple interventions likely contributed to this significant reduction in secondary stroke: » Investigators used low-cost, effective medications and followed an algorithm for titration of blood pressure ...
... Several important and relatively simple interventions likely contributed to this significant reduction in secondary stroke: » Investigators used low-cost, effective medications and followed an algorithm for titration of blood pressure ...
The Roles of Thiamine in Myocardial Infarction
... thiamine pyrophosphate (TPP) response test were concordant with thiamine deficiency [Loma-Osorio et al., 2011]. In addition, beriberi heart patients also demonstrated ST-segment elevation and myocardial damage without coronary artery stenosis, and they improved rapidly after thiamine was administere ...
... thiamine pyrophosphate (TPP) response test were concordant with thiamine deficiency [Loma-Osorio et al., 2011]. In addition, beriberi heart patients also demonstrated ST-segment elevation and myocardial damage without coronary artery stenosis, and they improved rapidly after thiamine was administere ...
ECG Guide - Banner Health
... through the rhythm as you travel from R wave to R wave. If you do not have calipers, another method to determine regularity is to make a small mark on a piece of paper over two consecutive R waves, then move the paper to the next R wave and see if the dots line up/march out. Do the R waves follow a ...
... through the rhythm as you travel from R wave to R wave. If you do not have calipers, another method to determine regularity is to make a small mark on a piece of paper over two consecutive R waves, then move the paper to the next R wave and see if the dots line up/march out. Do the R waves follow a ...
Heart to Heart
... The heart is a fist-sized organ which lies in the centre of the chest. The right and left sides of the heart each have an upper chamber (atrium), which collects blood and lower chamber (ventricle), which ejects blood. To ensure that blood flows in only one direction, each ventricle has an inlet and ...
... The heart is a fist-sized organ which lies in the centre of the chest. The right and left sides of the heart each have an upper chamber (atrium), which collects blood and lower chamber (ventricle), which ejects blood. To ensure that blood flows in only one direction, each ventricle has an inlet and ...
special communication - Regulatory, Integrative and Comparative
... of cardiac output (CO) and stroke volume (SV) are missing. Up to now murine cardiac performance has been evaluated by 1) traditional thermodilution or indicator-dilution methods (3, 24), 2) conductivity-dilution techniques (20), 3) radioactive or fluorescent microspheres (1, 17, 18, 22), 4) left ven ...
... of cardiac output (CO) and stroke volume (SV) are missing. Up to now murine cardiac performance has been evaluated by 1) traditional thermodilution or indicator-dilution methods (3, 24), 2) conductivity-dilution techniques (20), 3) radioactive or fluorescent microspheres (1, 17, 18, 22), 4) left ven ...
clinically applicable alternative to Emax
... The percent death rate due to heart disease increased 4% in high-income countries and 42% in low-income countries1. In the USA, heart disease continues to kill more people than cancer. In 2008 alone, over 600,000 people died of heart disease, accounting for one in four of all human deaths. Untreated ...
... The percent death rate due to heart disease increased 4% in high-income countries and 42% in low-income countries1. In the USA, heart disease continues to kill more people than cancer. In 2008 alone, over 600,000 people died of heart disease, accounting for one in four of all human deaths. Untreated ...
sanger - Carolinas HealthCare System
... The American Heart Association has recognized several Carolinas HealthCare System facilities for heart care; two locations were awarded its Gold Plus Quality Achievement Award for heart attack care. Sanger coordinates our nine accredited Chest Pain Centers, first responders and cardiovascular specia ...
... The American Heart Association has recognized several Carolinas HealthCare System facilities for heart care; two locations were awarded its Gold Plus Quality Achievement Award for heart attack care. Sanger coordinates our nine accredited Chest Pain Centers, first responders and cardiovascular specia ...