heart

  1. a_zed24

    Isolated Systolic Hypertension

    Hello, there! Our Therapeutics prof told us that "Isolated Systolic Hypertension" or ISH is somehow "more dangerous" than the Isolated Diastolic Hypertension and it is a more reliable predictor of the development of future cardio-vascular diseases. Why's that? Is it because during systole the...
  2. P

    Albuterol and Systemic impact

    Not sure which forum to post in, so I'll try here, and move me if you need to! Question about Albuterol or other SABAs: If IV route is used for asthma unresponsive to inhaler or neb, would the B2 receptors in the skeletal muscles around the body also dilate? If so, how does that then reconcile...
  3. Akam ahz

    extracellular calcium and contractility of the heart

    Hello, I want to understand the relation between extracellular Ca ion and the contractility of the heart. My book states that increasing extracellular Ca ion increases the forces of contractility of the heart, and vice versa, but at high concentration the heart stops in systole, and when...
  4. Blueinfantneedhelp

    Infant Cyanosis normal O2

    Hello, I feel as if no one can help me. I am not a doctor. Not a student. Just very frustrated. Sorry if I am breaking the rules. I’m sure it’s annoying me posting here since this is designed for you guys. I’m sure you’re tired of hearing from naggy patients all day. I’m sorry that I am bringing...
  5. K

    EKG questions

    Hi all guys, I'm a soon to be medical doctor but I'm still concerned about some aspects of EKG (that i'm actually rewiewing :eyebrow:). First of all I still don't understand some of the physics that lies behind it: how is it possible that the PQ tract is isoelettric if the atria are...
  6. A

    stroke volume question

    Stroke volume is the amount of blood ejected by the ventricle in one beat and is determined by ventricular preload, afterload, and contractility. How can stroke volume be decreased? a) Increase heart rate b) Increase ventricular contraction c) Decrease aortic pressure d) Decrease total...
  7. SterlingMaloryArcher

    MD & DO Is the mediastinum an airtight cavity or is it just a defined imaginary area?

    I've always wondered but I have to propose a new medical device (you have to at the end of this class I'm taking, where you pitch it to BMEngineers. I doubt they're really expecting anything actually worthwhile from undergrads but I thought why not take it seriously and see what comes of it.)...
  8. MHIF Intern Program

    12 positions ‐ paid premed internships in cardiovascular clinical research

    Undergrad premed students, please consider this great opportunity to do clinical research: Minneapolis Heart Institute Foundation will hire 12 interns for paid, 12-week internships this summer. The application DEADLINE is JANUARY 31! Interns work 1:1 with a cardiologist mentor, and participate...
  9. MHIF Intern Program

    12 positions - paid premed internships in cardiovascular clinical research

    Undergrad premed students, please consider this great opportunity to do clinical research: Minneapolis Heart Institute Foundation will hire 12 interns for paid, 12-week internships this summer. The application DEADLINE is JANUARY 31! Interns work 1:1 with a cardiologist mentor, and participate...
  10. R

    CT Specialist

    I'm an MS-2 interested in Cardiothoracic surgery. The aorta and aortic valve fascinate me and I want to specialize in aortic surgery (like Allan stewart or Leonard Girardi). How much longer is training and what is the pay and lifestyle difference compared to general CT?
  11. R

    CT Specialist

    I'm an MS-2 interested in Cardiothoracic surgery. The aorta and aortic valve fascinate me and I want to specialize in aortic surgery (like Allan stewart or Leonard Girardi). How much longer is training and what is the pay and lifestyle difference compared to general CT?
  12. Polycherry

    How does mitral regurgitation cause left atrial dilation?

    Robbins says that an incompetent valve causes volume overload. Agreed. The book gives examples stating that aortic regurgitation causes left ventricular overload and mitral regurgitation causes left atrial and ventricular overload. My doubt is, why is the left atrium affected in mitral...
  13. Deathglaveo

    Cardiology Heart Problem

    HEART PROBLEM NEED HELP Male, Age 21, 6ft and 189lbs About a year and a half ago I started having chest pains including heart burn, tightness of chest and trouble breathing. So I went into the family doctor. He thought it was from Acid Reflux so we did an endoscopy to scope my Stomach it came...
  14. M

    Cardiac Monitoring?

    Hey Guys, I am the founder of a company that is attempting to educate the general public about cardiac health and help them better understand their overall health. Wristbeat is changing how people approach their heart health by providing them with the tools and knowledge to understand and...
  15. TikiTorches

    Stimulants

    Any major cardiac contraindications you see with stims? I see patients with hocm, rbbb, MVP etc who would benefit from stims but I am concerned given the cardiac warning with stims. What do you think is the best way to help patients? I get thorough cardiac family history as well.
  16. V

    Isoproterenol vs increase in extracellular Ca+2 conc

    Fellow SDNers, I wanted to ask a question on the action potential(AP), Ca+2 transient and cardiac muscle twitch is affected when we either experimentally introduce more extracellular Ca+2 or administer isoproterenol. From what I understand when you would increase the extracellular Ca+2 more...
  17. H

    Can I get licensed as a surgeon in Sweden?

    Hi, I'm Brazilian and I'll enter medical school, here in Brazil, in one year. My plan is to finish the 6 years of medical school here and then apply to 2-year residency in Sweden. I'd do my best to impress the people working with me so they encourage me to stay in Sweden, because I want to be...
  18. HereWeGo21

    Acetylcholine and heartrate

    So I got a Kaplan question saying that Ach administration INCREASES heart rate? I now get the mechanism they're going for. Ach --> peripheral vasodilation --> reflex tachycardia. But...like...what about the M2 muscarinic receptor on the heart?? Wouldn't Ach directly cause bradycardia by acting...