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Flashcards in Cardiovascular Deck (392)
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361

A combination of which two drugs improes mortality in patients with CHF?

hydralazine and nitrates

362

Can capillaries thicken during HTN?

no

363

What would a restrictive myopathy show on ECG?

low amplitude voltag

364

Would a RV Infarct produce an increase or decreased PCWP?

decreased

365

What would Aortic Dissection show on Xray?

mediastinal widening

366

What type of angina features disruption of a preexisting atherosclerotic plaque with a thin fibrous cap?

Unstable

367

Endocardial Cushions give rise to what two structures in the heart?

Valves and septa

368

What is the most common valve to be affected by bacterial endocarditis?

Mitral

369

Which papillary muscle has dual blood flow?

antero-lateral

370

Which two arteries are affected by Buergers Disease?

Tibial and Radial

371

Can Buergers extend into the nerves?

yes

372

Which lipid-lowering agent works by preventing cholesterol reabsorption at the small intestinal brush border?

Ezetimibe

373

What structure is usually affected by an ASD?

septum secundum

374

Is an ASD the same as a foramen ovale?

no

missing rather than unfused

375

What causes a Tetralogy of Fallot?

antero-superior displacement of the infundibular septum

376

What is the synthetic BNP?

nesiritide

377

What dictates blood flow to skeletal muscle at rest?

sympathetic tone

378

Which two classes of anti-arrhythmics can prolong QT?

one-eh

three

379

Loss of cardiac contractility occurs within how many seconds of loss of oxygen?

60

380

Would an MVP occur earlier or later with mauevers that decrease venous return?

earlier

381

Is a smaller or larger interval between the opening click and S2 indicate a more severe stenosis?

smaller

382

Would Mitral Stenosis be worse during inspiration or expiration?

expiration

383

What phase of the cardiac cycle has the highest oxygen consumption?

Isovolumic Contraction

384

Does chronic anemia increase or decrease CO? Through what mechanism?

increase

increased venous return

385

What approximates Afterload?

mean arterial pressure

386

What is the oxygen percentage in the fetal umbilical vein?

80%

387

What is the oxygen percentage in the fetal right atria?

65%

388

What happens to the heart during Kartagener?

Aberrant cardiac looping

389

What two structures fuse to form the Membranous Interventricular Septum?

Aorticopulmonary septum

muscular ventricular septum

390

What two things in the heart do the endocardial cushions do?

separate atria from ventricles

contribute to atrial and ventricular septum