Congestive Heart Failure
Pathophysiology of Congestive Heart Failure
Congestive heart failure is:
1) inability of heart to deliver sufficient cardiac output to meet physiologic needs
2) both diastolic and systolic phases are abnormal
3) initially, compensatory mechanisms occur(increased catecholamines, increased atrial natriuretic factor, myocardial hypertrophy), but eventual failure of these ensues causing congestive heart failure
4) result is increase in venous pressure with congestion of liver, spleen, and kidney (“backward failure”) and sodium retention, peripheral edema, and pulmonary sequelae (“forward” failure”...
Source: Inside Surgery - March 20, 2013 Category: Surgeons Authors: Editor Tags: Cardiology backward failure enlarged heart foward failure myocardial hypertrophy nutmeg liver peripheral edema Source Type: blogs
Fight Aging! Newsletter, January 21st 2013
Discussion
- Latest Headlines from Fight Aging!
- Sarcopenia Correlates With Increased Mortality
- Luminescent Marking of Cellular Senescence
- Plastination Will Have Its Challenges, Just Like Cryonics
- More on Sestrins and Longevity
- Reducing Amyloid Beta Levels in a Mouse Model of Alzheimer's
- Solvents Increase Life in Nematode Worms
- Adenine in the Diet Blocks Calorie Restriction Benefits in Flies
- β-blockers Modestly Extend ...
Source: Fight Aging! - January 20, 2013 Category: Health Medicine and Bioethics Commentators Authors: Reason Tags: Newsletters Source Type: blogs
Right Bundle Branch Block with New Anterior ST elevation
An elderly female with no known history of CAD presented to the ED as a walk-in with vomiting and upper abdominal discomfort. The following ECG was recorded at t = 0:There is sinus rhythm with Right Bundle Branch Block and ST elevation in leads V1 and V2, suspicious for STEMI. The computerized QRS duration is 138 ms. A previous ECG was found:There is an RSR' with right ventricular conduction delay and downsloping ST depression in V1 that is reminiscent of Brugada pattern. The computerized QRS duration is 84 ms. The ST elevation is confirmed to be new.The cath lab was activated but the interven...
Source: Dr. Smith's ECG Blog - January 4, 2013 Category: Cardiology Authors: Steve Smith Source Type: blogs
Precordial ST depression. What is the diagnosis?
A middle aged male with no h/o CAD presented with one week of crescendo exertional angina, and had chest pain at the time of the first ECG:Here is the patient's previous ECG:NormalHere is the patient's presenting ED ECG:What do you think?There is isolated ST depression in precordial leads, deeper in V2 - V4 than in V5 or V6. There is no ST elevation. Precordial ST depression may be subendocardial ischemia or posterior STEMI. How can we tell the difference? See the list below.If you thought it might be a posterior STEMI, then you might have ordered a posterior ECG [change leads V4...
Source: Dr. Smith's ECG Blog - January 1, 2013 Category: Cardiology Authors: Steve Smith Source Type: blogs
