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High-Tech Mobile Stroke Units Treat Patients Sooner
A stroke is one of the most time-critical medical emergencies. If not treated quickly, a patient can quickly deteriorate as brain cells die from a lack of oxygen. Doctors aim to begin treating stroke patients within an hour from the onset of symptoms...
Source: Medgadget - December 5, 2017 Category: Medical Devices Authors: Scott Jung Tags: Cardiology Emergency Medicine Neurology Public Health Source Type: blogs
Orbiting ORBITA
By ANISH KOKA, MD
I’m sitting amidst a number of cardiologists to go over the most recent trials presented at the interventional cardiology conference in Denver. The cardiology fellow presenting goes quickly through the hors de oeuvres until finally getting to the main course – ORBITA.
ORBITA sought to test the very foundations interventional cardiology was built on – the simple idea that opening a stenosed coronary artery was good for patients. The trial was a double blind randomized control trial of patients with tightly stenosed arteries who either had a stent placed or had a sham procedure. Before the resul...
Source: The Health Care Blog - December 4, 2017 Category: Consumer Health News Authors: anish_koka Tags: Uncategorized Anish Koka cardiology Orbita Source Type: blogs
3 ways to fix end-of-life care
Anyone with even the slightest passing interest in health care, has heard the mind-blowing statistics. As a nation, we spend almost 3.5 trillion dollars on health care. To put that into perspective, that is more than the total GDP of every country in the world apart from China and Japan! Germany, next on the list, has an entire GDP of 3.4 trillion dollars. At 18 percent of the economy, we spend almost double the OECD GDP average percentage of other western nations. What’s more, our health care spending continues to spiral out of control, and will only realistically increase with newer expensive treatments against the bac...
Source: Kevin, M.D. - Medical Weblog - December 1, 2017 Category: General Medicine Authors: < a href="https://www.kevinmd.com/blog/post-author/suneel-dhand" rel="tag" > Suneel Dhand, MD < /a > Tags: Physician Palliative Care Source Type: blogs
Point-of-care handheld echocardiography
(Hand held echocardiograph – Representative image)
Initially echocardiographs were large machines with poor resolution. Later advances in electronics miniaturized the machines while improving the resolutions. Multiple modes of imaging starting from the initial single dimensional M-Mode and later, 2-D (two dimensional), 3-D (three dimensional), 4-D (live three dimensional) imaging as well as additional techiques like Doppler interrogation, colour flow mapping, tissue Doppler, strain imaging and speckle tracking made echocardiography a versatile diagnostic tool in cardiology. Invasive forms of echocardiography like i...
Source: Cardiophile MD - December 1, 2017 Category: Cardiology Authors: Johnson Francis Tags: Echocardiography Source Type: blogs
Ultrathin and Flexible Microfiber Sensor for Healthcare Monitoring and Diagnosis
Researchers at the National University of Singapore have developed an ultrathin, flexible microfiber sensor that can be worn on or placed next to the skin. The device can provide information on heart rate, blood pressure, and stiffness in blood vesse...
Source: Medgadget - November 28, 2017 Category: Medical Devices Authors: Conn Hastings Tags: Anesthesiology Cardiology Critical Care Diagnostics Medicine Source Type: blogs
Multislice computed tomography (MSCT) for evaluation of myocardial viability
Iodinated contrast used for CT scanning accumulate in infarcted myocardium similar to what happens with late gadolinium enhanced (LGE) magnetic resonance imaging (MRI). With the high spatial resolution inherent to MSCT (also called multi detector CT or MDCT), differentiation of transmural and subendocardial infarction is possible. Old infarcts have lower density on CT compared to recent infarcts. In general, there is good agreement between LGE MRI and late enhancement noted on MSCT.
In a comparison with dobutamine stress echocardiography, MSCT with 64 multislice CT findings agreed with stress echo findings in 97.3% of th...
Source: Cardiophile MD - November 21, 2017 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Balanced myocardial ischaemia
If all three major coronary branches have similar degree of stenosis, the radionuclide used for perfusion study will have equal uptake in all regions of the myocardium. Thus a balanced three vessel coronary artery disease can produce a false negative myocardial perfusion scan. This situation is called balanced myocardial ischemia. In most cases this is picked up by the treadmill ECG usually done along with stress myocardial perfusion imaging. Since the ECG findings of myocardial ischemia does not depend on the relative perfusion in the coronary tree, ischemic changes will be noted in treadmill ECG even when nuclear perf...
Source: Cardiophile MD - November 20, 2017 Category: Cardiology Authors: Johnson Francis Tags: Nuclear Cardiology Source Type: blogs
SPECT – advantages and disadvantages
SPECT (single photon emission computed tomography) – advantages and disadvantages
Advantages of SPECT
Important advantages of SPECT are that it has been extensively validated and has a good sensitivity, compared to other methods of assessment of myocardial viability. Cost of SPECT is lower than PET (positron emission tomography) imaging and is more widely available than PET in most regions. SPECT can be used in the presence of cardiac implantable electronic devices (CIED) while cardiac magnetic resonance (CMR) imaging has important limitations in this setting.
Disadvantages of SPECT
SPECT has a much higher cost comp...
Source: Cardiophile MD - November 20, 2017 Category: Cardiology Authors: Johnson Francis Tags: Nuclear Cardiology Source Type: blogs
Advantages and disadvantages of echocardiographic assessment of myocardial viability
Echo based techniques for assessment of myocardial viability has certain advantages as well as limitations. Echocardiagraphic techniques are safe and do not have the risk of ionizing radiation like nuclear perfusion studies and positron emission tomography. Due to portability of echocardiographic equipment even bedside evaluation is possible and the equipments are widely available. Cost of procedure is much less compared to nuclear imaging studies. Unlike cardiac magnetic resonance (CMR) imaging, presence of pacemakers and defibrillators are not a problem. Other coexisting cardiac pathology can also be assessed by echocar...
Source: Cardiophile MD - November 18, 2017 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Strain and strain rate imaging for assessment of myocardial viability
Myocardial strain is a measure of deformation of a myocardial segment relative to its initial length. Strain rate is the rate at which the deformation occurs. This is in effect the gradient between velocities at two points. Strain and strain rate can be measured echocardiographically using tissue Doppler and 2D (two dimensional) speckle tracking. A change of radial myocardial strain of more than 9.5% has been shown to have a sensitivity of 83.9% and a specificity of 81.4% for detection of myocardial viability. Change in longitudinal myocardial strain more than 14.6% had a sensitivity of 86.7% and specifity of 90.2% fo...
Source: Cardiophile MD - November 18, 2017 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Usono ProbeFix Introduces Continuous, Hands-Free Ultrasound to The World
Usono, a company based in The Netherlands, has created a new kind of ultrasound accessory that is an important diagnostic tool as well as a way to improve reproducibility of ultrasound images. ProbeFix is a fixation system for transthoracic ultrasoun...
Source: Medgadget - November 16, 2017 Category: Medical Devices Authors: Yuriy Sarkisov Tags: Anesthesiology Cardiology Medicine Source Type: blogs
Myocardial viability assessment
The term viable myocardium is applied to myocardium with a potentially reversible contractile dysfunction in patients with coronary artery disease. It can be divided into stunned myocardium and hibernating myocardium. Stunned myocardium has prolonged contractile dysfunction after a transient ischemic episode and coronary reperfusion. This automatically recovers over a period of time. Stunned myocardium is commonly noted after thrombolysis and primary percutaneous coronary intervention. Hibernating myocardium has reduced contractile function due to persistently impaired coronary blood flow. Hibernating myocardium regai...
Source: Cardiophile MD - November 16, 2017 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
An Open Letter to Dr. John Warner, President of the American Heart Association, on surviving a heart attack
Headlines today announce that the new President of the American Heart Association (AHA), cardiologist Dr. John Warner, has suffered a heart attack, aborted by an emergency stent placement. Typical of the ridiculous attitudes that prevail at the industry-friendly AHA, they Tweeted:
“Sending all our love and support to @American_Heart president Dr. Warner as he recovers from a mild heart attack. Heart disease can strike anyone, at any time. That’s why we keep fighting.”
If you ignore the nonsense that AHA policy dictates, you can absolutely gain control over cardiovascular risk. But you will NOT find the answer...
Source: Wheat Belly Blog - November 14, 2017 Category: Cardiology Authors: Dr. Davis Tags: Undoctored Wheat Belly Lifestyle Source Type: blogs
Cardiac CT – Left coronary artery
Cardiac CT scan at the level of the aortic sinuses, showing the left main coronary artery (LMCA) and its two branches. LAD: Left anterior descending coronary artery; LCX: Left circumflex coronary artery. Ao: Aorta. LAD courses down in the groove between the right and left ventricles on the anterior surface of the heart. LCX turns backwards in the atrioventricular groove between the left atrium and left ventricle.
Source: Cardiophile MD - November 10, 2017 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Healcerion Receives FDA Clearance for New SONON 300L Wireless, App-based Ultrasound System
Healcerion, based in South Korea, was the first company to receive FDA clearance for their wireless, app-based ultrasound system back in 2015. The groundbreaking work done by South Korean engineers and scientists laid the foundation for the developme...
Source: Medgadget - November 3, 2017 Category: Medical Devices Authors: Yuriy Sarkisov Tags: Anesthesiology Cardiology Critical Care Emergency Medicine Ob/Gyn Radiology Surgery Urology Vascular Surgery Source Type: blogs
