A Comparison of Regional Blood Flow and Oxygen
... at least one minute prior to any determination of FBF." Arterial pressure was measured directly with a Statham P23db pressure transducer by means of a needle placed in the contralateral brachial or radial artery which was also used for the sampling of arterial blood. A 19 gauge Deseret Intracath was ...
... at least one minute prior to any determination of FBF." Arterial pressure was measured directly with a Statham P23db pressure transducer by means of a needle placed in the contralateral brachial or radial artery which was also used for the sampling of arterial blood. A 19 gauge Deseret Intracath was ...
How should I treat a perimembranous
... and device delivery a challenge. Many cases have reported successful crossing of pmVSDs via a retrograde transaortic approach. Once the wire is across the pmVSD, it is snared through either the femoral or internal jugular vein, creating an arteriovenous (AV) rail that provides support for delivery. ...
... and device delivery a challenge. Many cases have reported successful crossing of pmVSDs via a retrograde transaortic approach. Once the wire is across the pmVSD, it is snared through either the femoral or internal jugular vein, creating an arteriovenous (AV) rail that provides support for delivery. ...
Impact of age on QT interval and QT dispersion in healthy subjects
... Age did not have any impact on QTd in our study. QTd values were similar to the range of 30 and 60 ms that have been obtained previously in normal subjects [29]. Age-related differences -10 ms have been reported and appeared to be statistically significant in some larger studies. In the study from S ...
... Age did not have any impact on QTd in our study. QTd values were similar to the range of 30 and 60 ms that have been obtained previously in normal subjects [29]. Age-related differences -10 ms have been reported and appeared to be statistically significant in some larger studies. In the study from S ...
Response of myocardial oxygenation to breathing manoeuvres and
... asked to indicate their need for inspiration. (iii) Adenosine infusion (140 mg/kg/min) with image acquisition before and 3.5 min into the drug infusion. Imaging during adenosine infusion was randomly performed either before or after imaging during breathing manoeuvres. There was a break of at least ...
... asked to indicate their need for inspiration. (iii) Adenosine infusion (140 mg/kg/min) with image acquisition before and 3.5 min into the drug infusion. Imaging during adenosine infusion was randomly performed either before or after imaging during breathing manoeuvres. There was a break of at least ...
The Artificial Pacemaker . . . . . . A Pure Success Story!?
... check is carried out to monitor the battery life, to measure the strength of the impulse, and to monitor the discharge rate of the pacemaker. Therefore, a patient’s lifestyle is usually not modified to any great degree after the insertion of a pacemaker. The only loss in life quality is that contact ...
... check is carried out to monitor the battery life, to measure the strength of the impulse, and to monitor the discharge rate of the pacemaker. Therefore, a patient’s lifestyle is usually not modified to any great degree after the insertion of a pacemaker. The only loss in life quality is that contact ...
Hydraulic forces contribute to left ventricular diastolic filling
... on Pascal’s principle, and have previously been hypothesized to contribute to diastolic filling22–24. The hypothesis has been tested using a mathematical model, where the AV plane was treated as a piston unit with two different areas25. In that model, the hydraulic force was assumed to be the only c ...
... on Pascal’s principle, and have previously been hypothesized to contribute to diastolic filling22–24. The hypothesis has been tested using a mathematical model, where the AV plane was treated as a piston unit with two different areas25. In that model, the hydraulic force was assumed to be the only c ...
Importance of Atrial Compliance in Cardiac Performance
... and atrial pressure became smaller, the mean level of venous return flow increased, the atrial volume increased, the mean atrial pressure decreased, the ventricular stroke volume increased, and the enddiastolic volume increased; end-systolic volume, however, remained unchanged. Hence, cardiac output ...
... and atrial pressure became smaller, the mean level of venous return flow increased, the atrial volume increased, the mean atrial pressure decreased, the ventricular stroke volume increased, and the enddiastolic volume increased; end-systolic volume, however, remained unchanged. Hence, cardiac output ...
Journal of Nippon Medical School Vol.77 No.5
... example, the incidence of congestive heart failure is ...
... example, the incidence of congestive heart failure is ...
Automated external defibrillators: What`s established? What`s new?
... five minutes. Eleven patients with ventricular fibrillation were successfully resuscitated, including eight who regained consciousness before hospital admission. No shock was delivered in four cases of suspected cardiac arrest, and the device correctly indicated that the problem was not due to ventr ...
... five minutes. Eleven patients with ventricular fibrillation were successfully resuscitated, including eight who regained consciousness before hospital admission. No shock was delivered in four cases of suspected cardiac arrest, and the device correctly indicated that the problem was not due to ventr ...
Importance of Atrial Compliance in Cardiac Performance
... Effects of changes in atrial compliance on cardiac performance were analyzed using a circulatory analog model. The atrium was assumed to be a noncontracting chamber with a constant compliance. It connected the venous return system, which was represented by mean circulatory filling pressure and a ven ...
... Effects of changes in atrial compliance on cardiac performance were analyzed using a circulatory analog model. The atrium was assumed to be a noncontracting chamber with a constant compliance. It connected the venous return system, which was represented by mean circulatory filling pressure and a ven ...
Distance covered during a six-minute walk test predicts long
... deviations. The between-group differences were tested using Student’s t-test. The remaining continuous variables (ie, plasma NT-proBNP and serum hs-CRP) had a skewed distribution and were expressed as medians with lower and upper quartiles. These between-group differences were tested using the Mann ...
... deviations. The between-group differences were tested using Student’s t-test. The remaining continuous variables (ie, plasma NT-proBNP and serum hs-CRP) had a skewed distribution and were expressed as medians with lower and upper quartiles. These between-group differences were tested using the Mann ...
Relationship QRS Amplitude Changes During Exercise to
... Dalhouise square.'2 The chest electrodes were small silver electrodes that did not interfere with imaging. The data were acquired using a specially developed, microcomputer-assisted, 15-lead ECG/VCG recorder (Marquette Data Logger) that records on paper and continuously stores on floppy discs. In th ...
... Dalhouise square.'2 The chest electrodes were small silver electrodes that did not interfere with imaging. The data were acquired using a specially developed, microcomputer-assisted, 15-lead ECG/VCG recorder (Marquette Data Logger) that records on paper and continuously stores on floppy discs. In th ...
Chapter_011
... A catheter is used to measure the pressure in the chambers of the heart, to take blood samples, and to view obstructions in the vessels. A tube is inserted through the blood vessels into the heart. Dye is then released and traced using x-ray ...
... A catheter is used to measure the pressure in the chambers of the heart, to take blood samples, and to view obstructions in the vessels. A tube is inserted through the blood vessels into the heart. Dye is then released and traced using x-ray ...
Living with Heart Failure - Montefiore Medical Center
... Heart failure is treated with a combination of medications, in addition tolifestyle changes and close monitoring. Some medications can help decrease progression of heart failure and extend your life, while other medications help decrease symptoms. The different medications can help you feel better. ...
... Heart failure is treated with a combination of medications, in addition tolifestyle changes and close monitoring. Some medications can help decrease progression of heart failure and extend your life, while other medications help decrease symptoms. The different medications can help you feel better. ...
Cardiovascular Emergencies: Pericardial Effusion and Cardiac
... (i.e., an ECG pattern of alternating amplitude of the P wave and the QRS complex with every other beat, caused by excessive heart movement in the increased fluid of the pericardium) (DeMichele & Glick, 2001; Knoop & Willenberg, 1999; Mangan, 1992). Diffused low voltage (less than 5 mm) in the limb ...
... (i.e., an ECG pattern of alternating amplitude of the P wave and the QRS complex with every other beat, caused by excessive heart movement in the increased fluid of the pericardium) (DeMichele & Glick, 2001; Knoop & Willenberg, 1999; Mangan, 1992). Diffused low voltage (less than 5 mm) in the limb ...
Effect of Altered Activation Sequence on Epicardial QRST Area and
... Meth.ods and Results. Right and left ventricular pacings were performed, and the pacing site was altered every 6 minutes. After 4 minutes of a given pacing, 54 unipolar electrograms distributed over the entire cardiac surface were recorded. Next, refractory periods at electrode sites near pacing ele ...
... Meth.ods and Results. Right and left ventricular pacings were performed, and the pacing site was altered every 6 minutes. After 4 minutes of a given pacing, 54 unipolar electrograms distributed over the entire cardiac surface were recorded. Next, refractory periods at electrode sites near pacing ele ...
030327 Cardiovascular Effects of Continuous
... failure due to ischemic or nonischemic dilated cardiomyopathy (defined as a left ventricular end-diastolic dimension above 27 mm per square meter of body-surface area14) for at least six months; a left ventricular ejection fraction of 45 percent or less at rest, as quantified by gated radionuclide a ...
... failure due to ischemic or nonischemic dilated cardiomyopathy (defined as a left ventricular end-diastolic dimension above 27 mm per square meter of body-surface area14) for at least six months; a left ventricular ejection fraction of 45 percent or less at rest, as quantified by gated radionuclide a ...
RECOVER CPR Seminar
... Higher compression rates (100-120/min) are associated with better outcome than 60/minute Do not “lean” on the chest between compressions, to allow full recoil between compressions Compressions should be fast, as should the release If you have an extra person, interposed abdominal compressions do imp ...
... Higher compression rates (100-120/min) are associated with better outcome than 60/minute Do not “lean” on the chest between compressions, to allow full recoil between compressions Compressions should be fast, as should the release If you have an extra person, interposed abdominal compressions do imp ...
Whole Grape Intake Impacts Cardiac Peroxisome
... statistically significant decrease versus HS was detected at 6 weeks of treatment. The difference between LS and LSG was not statistically significant at any time point. Compared to LS and LSG, HS and HSH were associated with cardiac hypertrophy and increased cardiac hydroxyproline content, an index ...
... statistically significant decrease versus HS was detected at 6 weeks of treatment. The difference between LS and LSG was not statistically significant at any time point. Compared to LS and LSG, HS and HSH were associated with cardiac hypertrophy and increased cardiac hydroxyproline content, an index ...
Time-course changes in left ventricular myocardial deformation in
... shown a trend in myocardial deformation changes in the very early stages of T1DM. The studies by Wei Z et al8.9 showed that circumferential strain and strain rate decreased in diabetic rats at 12 weeks after STZ induction. The study by Nakai H et al12 showed that diabetic duration was the only inde ...
... shown a trend in myocardial deformation changes in the very early stages of T1DM. The studies by Wei Z et al8.9 showed that circumferential strain and strain rate decreased in diabetic rats at 12 weeks after STZ induction. The study by Nakai H et al12 showed that diabetic duration was the only inde ...
Neurological Outcomes in Newborns with Congenital Heart Disease
... implications for control of future seizures [6,14]. In the management of neonates with seizures, the main goal is to identify the etiology. An adequate diagnosis may lead to specific treatment, thus limiting damage to the developing brain. Although many publications in the literature analyze the inc ...
... implications for control of future seizures [6,14]. In the management of neonates with seizures, the main goal is to identify the etiology. An adequate diagnosis may lead to specific treatment, thus limiting damage to the developing brain. Although many publications in the literature analyze the inc ...
Pulse - Frank`s Hospital Workshop
... well-conditioned athletes may have a healthy pulse rate much lower than 60 BPM, say 30-45 BPM. Bradycardia occurs when the pulse rate is below 60 per minute but is only usually symptomatic when below 50BPM, whereas tachycardia occurs when the rate is above 100 BPM. During sleep, the pulse can drop t ...
... well-conditioned athletes may have a healthy pulse rate much lower than 60 BPM, say 30-45 BPM. Bradycardia occurs when the pulse rate is below 60 per minute but is only usually symptomatic when below 50BPM, whereas tachycardia occurs when the rate is above 100 BPM. During sleep, the pulse can drop t ...
PDF - Circulation
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
High-Intensity Interval Training in Patients With Heart
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
... METHODS: Two hundred sixty-one patients with left ventricular ejection fraction ≤35% and New York Heart Association class II to III were randomly assigned to HIIT at 90% to 95% of maximal heart rate, MCT at 60% to 70% of maximal heart rate, or RRE. Thereafter, patients were encouraged to continue ex ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.