Does the Aortic root contract or relax during ventricular systole ?
Some time back I asked this question in one of my classes for the fellows and found no takers. Not even a guess? I realized later it was indeed a tough question. The heart is not the only dynamic organ as we generally believe. The entire aorta which is the extension of the left ventricle has to be dynamic according to the physics of ventricular-arterial coupling and the momentum of blood flow.
What happens to the aortic dimension with systole?
Even prior to systole, there is evidence, Aorta gets ready to receive the blood from the LV. So, the Aortic root is larger at the onset of systole. (Ref 2 It is been g...
Source: Dr.S.Venkatesan MD - October 1, 2022 Category: Cardiology Authors: dr s venkatesan Tags: Anatomy of heart Uncategorized aortic root dynamism cardiology research topic Source Type: blogs
One Day I ’ll Fly Away, COVID Permitting
With Fall in full swing, many of us are asking “when will I begin to live my life again?” Life involves traveling, yet 2020 was the worst year in tourism history, with 1 billion fewer international arrivals than 2019. And now, after an optimistic summer, travel bookings for Labor Day were down 15% from 2019, indicating that the Delta variant dissuades people from traveling. Still, getting away is a human need, and an economic need. In a recent press release, the U.S. Travel Association urges everyone to vaccinate, for their own protection, and “to help put us on the p...
Source: PickTheBrain | Motivation and Self Improvement - October 8, 2021 Category: Consumer Health News Authors: Talya Miron-Shatz Tags: confidence creativity health and fitness philosophy covid experience happiness travel Source Type: blogs
House 2022 National Defense Authorization Act Amendments on Arms Sales and Security Assistance
Jordan CohenThe House is set to vote on theNational Defense Authorization Act (NDAA) for fiscal year 2022. Prior to the structured Rule for the act, there were a total of fifty amendments that, if passed, would directly impact weapons sales legislation. Overall, these bills are divided into five broad themes: congressional power, increased monitoring and reporting surrounding human rights violators, weapons sales to the Middle East, weapons sales to counter Russia, and weapons sales to counter China.Readers should examine the2020 Arms Sales Risk Index for our latest data on risks associated with the weapons sales proc...
Source: Cato-at-liberty - September 21, 2021 Category: American Health Authors: Jordan Cohen Source Type: blogs
Guinea ’s Coup Is The Latest Example Of Risks From U.S. Military Aid
A. Trevor Thrall andJordan CohenOn September 5, 2021, an American ‐trained military officer inGuinea ’s armed forces led a coup d ’état to oust President Alpha Condé. Though far from the only coup initiated by forces with American training, this coup marks the first time that someone has led a coupwhile taking that training. American officials have tried to distance the United States from the coup by saying that it is “inconsistent with U.S. military training and education” andsuspending military support to Guinea. Weak excuses like this, however, cannot obscure the truth: U.S. military assistance ...
Source: Cato-at-liberty - September 14, 2021 Category: American Health Authors: A. Trevor Thrall, Jordan Cohen Source Type: blogs
Case of the Week 642
It ' s time for our monthly case from Idzi Potters and theInstitute of Tropical Medicine, Antwerp. As always, Idzi has a great case for us - courtesy of Anna Rosanas and Pieter Guetens from ITM ' s Malariology Department: a patient with extensive recent travel - leaving Belgium to trek across rural areas of Peru, Niger, Mali, and finally the Philippines. He didn ' t take any malaria prophylaxis while traveling and now presents with fever and general malaise after being home for 3 weeks. The following are thick and thin Giemsa-stained blood films from this patient (pH 8.0). The percent parasitemia was calculated at 1%. Iden...
Source: Creepy Dreadful Wonderful Parasites - June 7, 2021 Category: Parasitology Source Type: blogs
CORAL study on renal artery stenting
In the Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) study, 947 patients who had atherosclerotic renal artery stenosis and either systolic hypertension while taking two or more antihypertensive medications or chronic kidney disease were evaluated. It was a multi-center, open-label, randomized, controlled trial. Patients were randomized to either medical therapy plus renal artery stenting or medical therapy alone [1].
Previous randomized trials on renal angioplasty had failed to show significant benefit in control of blood pressure [2,3]. Another two randomized trials checking the effect of renal artery...
Source: Cardiophile MD - April 7, 2021 Category: Cardiology Authors: Prof. Dr. Johnson Francis Tags: Cardiology Source Type: blogs
American Courts Don ’t Have Universal Jurisdiction
Ilya ShapiroChild slavery within the cocoa trade has earned global attention. Nestl é has condemned the practice and joined accords aimed at abolishing human trafficking in the region. Nonetheless, the chocolate company finds itself in a decade ‐long lawsuit over the enslavement of Malians on Ivorian plantations on the basis of the corporation’s alleged purchase of cocoa from farms that used slaves.The Alien Tort Statute gives federal courts jurisdiction over cases brought by foreigners who allege a “violation of the law of nations or a treaty of the United States. ” Passed as part of the Judiciary Ac...
Source: Cato-at-liberty - September 9, 2020 Category: American Health Authors: Ilya Shapiro Source Type: blogs
Why the UK May Be Sending Troops to Mali
The UK government ' s decision to deploy an additional 250 soldiers to join the United Nations mission in Mali might be in Britain ' s security interests. Such deployments display the UK ' s commitment to international security and may well form a critical part of its post-BREXIT diplomacy. (Source: The RAND Blog)
Source: The RAND Blog - March 15, 2020 Category: Health Management Authors: Michael Shurkin Source Type: blogs
More Engagement in West Africa Could Blunt Looming Crisis
There is a very real possibility that the security crisis afflicting Burkina Faso, Mali, and Niger will spread to the countries of the West African coastal region. Early action including security-sector support could be the key to staving off worst-case scenarios. (Source: The RAND Blog)
Source: The RAND Blog - February 24, 2020 Category: Health Management Authors: Michael Shurkin Source Type: blogs
Mali Violence Shows Limits of Intervention
Each year brings more violence to Mali and its neighbors. Mali and Burkina Faso are rapidly destabilizing; the situation in Niger is less dire, but that is hardly a commendation. Why is the violence in Mali getting worse given the significant efforts by the international community to stem it? (Source: The RAND Blog)
Source: The RAND Blog - November 21, 2019 Category: Health Management Authors: Michael Shurkin Source Type: blogs
Supreme Court Should Review Ninth Circuit Error Regarding Alien Tort Statute
Ilya Shapiro andDennis GarciaThe Alien Tort Statute, passed as part of the Judiciary Act of 1789, gives federal courts the power to hear cases brought by foreigners who allege “a violation of the law of nations or a treaty of the United States.” The Supreme Court inKiobel v. Royal Dutch Petroleum(2013) held that this law presumptively doesn ’t apply to violations committed abroad—though that presumption can be overcome when claims “touch and concern the territory of the United States . . . with sufficient force.”Then inJesner v. Arab Bank, PLC(2018), the Court ruled that foreign corporations cannot be sued unde...
Source: Cato-at-liberty - October 28, 2019 Category: American Health Authors: Ilya Shapiro, Dennis Garcia Source Type: blogs
American Weapons in Yemen: A Cautionary Tale
CNNbrokean important story today outlining how Saudi Arabia and the United Arab Emirates (UAE) have intentionally transferred American-made weapons to violent non-state actors. Intended as a government to government sale, everything from American rifles to Oshkosh armored vehicles to TOW anti-tank missiles have made their way into the hands of “Al Qaeda-linked fighters, hard-line Salafi militias, and other factions waging war in Yemen. ”Although the extent of the problem in Yemen is disturbing, the illegal dispersion of American weapons is nothing new. And the fact that Saudi Arabia and the UAE are unreliable customers...
Source: Cato-at-liberty - February 5, 2019 Category: American Health Authors: A. Trevor Thrall, Caroline Dorminey Source Type: blogs
Health Technologies To Eradicate Insects Transmitting Deadly Diseases
Drones transporting sterilized male mosquitos, cybernetic dragonflies, genetically modified insects with malaria-resisting traits, supersensitive radars or digital maps: the most innovative methods are deployed in the war on the tiniest but most murderous beasts out there: mosquitos, fleas, ticks carrying infectious diseases. Here’s the latest arsenal of digital technologies to eradicate insects and reduce deadly epidemics.
Unusual suspects: mosquitos, fleas, and ticks
Sharks, bears, tigers, the Killer Rabbit of Caerbannog in association with sharp teeth and claws represent the traditional image of deadly animals. Howeve...
Source: The Medical Futurist - December 4, 2018 Category: Information Technology Authors: nora Tags: Biotechnology Future of Medicine Medical Professionals Policy Makers Researchers AI big data CRISRP digital health digital maps disease disease awareness epidemics gene editing Healthcare Innovation insect mosquito prev Source Type: blogs
Africa Is A Hotspot For Digital Health
Digital health in Africa is booming, and that’s the greatest news since the invention of broadband internet connection. The flourishing of disruptive solutions might go down to the fact that instead of relying on traditional infrastructure and a conventional healthcare system, populations in Africa need cheap, easily accessible and genuinely problem-solving technologies. Why, when and how have they got there? Read on!
Disrupted infrastructure should be …
Africa has the world’s worst health record. The birth-continent of the homo sapiens bears one-quarter of the global disease burden, yet it spends only 1 percent of t...
Source: The Medical Futurist - June 5, 2018 Category: Information Technology Authors: nora Tags: Future of Medicine Healthcare Policy 3d printing Africa digital digital health digital technology Innovation mhealth mobile mobile health smartphone Source Type: blogs
