+1-415-670-9189
info@expertsmind.com
Why an increase in constriction of veins
Course:- Biology
Reference No.:- EM13677612




Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Biology

1. Why 60 years-old patient HA, who was bedridden for a few days, feels dizzy and experiences significant increase in his heart rate after standing up?

2. What will happen to his systemic arterioles regarding vascular tone changes?

3. Why an increase in constriction of veins and an increase in venous return will help to increase his end-diastolic volume?

4. How did epinephrine release from his adrenal medulla affect his blood supply (perfusion) to his skeletal muscles?

5. If this patient is regularly taking beta-blocker, such as metoprolol, how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

6. If this patient is regularly taking vasodilator, such as long-acting isosorbidedinitrate (Isordil), how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

7. If this patient is regularly taking Calcium Channel Blocker (CCB), such as nifedipine, how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

8. If this patient is regularly taking Angiotensin Converting Enzyme (ACE) inhibitor, such as lisinopril, how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

9. If this patient is regularly taking Angiotensin Receptor Blocker (ARB), such as losartan, how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

10. If this patient is regularly taking thiazide diuretic, such as hydrochlorothiazide, how will this drug affect his sympathetic discharge to the heart, to veins and to arterioles? What changes in his blood pressure can be expected? What advice should be given to this patient?

Answered:-

Verified Expert


Preview Container content

ß blocker such as metoprolol are selectively potent against cardiac (ß1) compared to bronchial (ß2) receptors, however this selectivity is lost at higher dose. The sympathetic discharge of the heart is reduced with various protective mechanism such as (i) sub-endocardial coronary flow enhancement, which leads to diastolic prolongation; (ii) restoration of reflex control over heart and circulation; (iii) inhibition of catecholamine cardiotoxic effects and (iv) improved myocardial performance with reduction in heart rate and oxygen demand.

It is noteworthy to mention that the chronic usage of ß blocker – metoprolol is likely to improve the performance of left ventricle and reverses the left ventricle remodeling. The oxygen supply to the myocardial is improved, which also increases the exercise tolerance. These condition leads to improved patient ß blocker such as metoprolol are selectively potent against cardiac (ß1) compared to bronchial (ß2) receptors, however this selectivity is lost at higher dose. The sympathetic discharge of the heart is reduced with various




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Biology) Materials
Assume you have a set of 4-Hfr strains and you carry out a series of crosses with a multiply marked recipient that is auxotrophic for many different nutritional markers.
You have seen the many potential impacts of addiction on individuals. In this activity, you will apply this information to a particular case. Review the following websites r
The human prion gene is called the PRNP gene. Fatal familialinsomnia and GSS are inherited prion disease and have mutations inthis gene. Which amino acid differ in the prion
Before making a case for an evidence-based project, it is essential to understand the culture of the organization in order to begin assessing its readiness for EBP implement
You subject a single dsDNA strand to PCR using the PCR protocol discussed during our lab. How many amplified strands of our DNA target would be present after: a. 10 min? b.
A student placed 17.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the
1. What are some examples of arthropods? 2. What are the classes into which the phylum Arthropoda is divided? What are the three main classes and some of their representativ
What happened when you placed Elodea at the light compensation distance from the light source? How might you use a radioactive isotope to find out whether the oxygen in carbon