Индивидуальные консультации и отработки Замечник Т.В. для группы № ККП-103 (иностранные студенты на англ языке)

Dear students, please read the lectures and complete the assignment. Attach the answer to the task via the answer on the forum (here)

Assignment for lecture number 17

Answer the test questions.

1. Is it true that coronary blood flow decreases with aortic valve insufficiency?

1) yes 2) no

2. Is it possible to develop coronary insufficiency under conditions of increased (compared to rest) coronary blood flow?

1) yes 2) no

3. Ventricular fibrillation:

1) group ventricular extrasystole

2) complete dissociation of atrial and ventricular contractions

3) chaotic contraction of individual groups of cardiomyocytes

4) tachycardia with a rhythm of 250–300 per minute

4. What phenomenon underlies the compensatory pause after ventricular extrasystole?

 1) decreased excitability of the cells of the sinoatrial node

2) increased excitability of the cells of the sinoatrial node

3) arrival of the next excitation impulse in the ventricular myocardium in the phase of absolute refractoriness

4) positive dromotropic effect of extrasystole

 5. How does the intensity of functioning of hypertrophied cardiomyocytes change in the phase of stable compensation?

1) increases to the maximum

2) decreases to the norm

3) progressively decreases

6. Indicate the correct statement:

1) in heart failure, the load on the heart exceeds its ability to perform adequate work, which is accompanied by a decrease in cardiac output below the required level and the development of circulatory hypoxia

2) in heart failure, the volumetric velocity decreases and the linear velocity of blood flow increases, which is accompanied by a decrease in stroke output and an increase in perfusion pressure in the arterioles

7. Can heart failure develop with rapid resumption of coronary blood flow in a previously occluded artery

1) yes 2) no

9. The mechanism that causes the development of nomotopic arrhythmias is

a) abnormal automatism of hypopolarized myocardial cells

b) change in the normal automatism of the sinoatrial node

c) repeated entry of the impulse and its circular motion

10. During atrial fibrillation, the excitation rhythm of the ventricles

a) is correct

b) is determined by the pacemaker cells of the atrioventricular node

 c) is determined by ventricular ectopic foci of excitation

d) is determined by impulses coming from the atria

12. The intensity of the functioning of hypertrophied cardiomyocytes in the phase of stable compensation

a) increases to the limit

b) decreases to normal

c) progressively decreases

13. The correct statement is

a) in heart failure, the load on the heart exceeds its ability to perform adequate work, which is accompanied by a decrease in cardiac output below the required level and development of circulatory hypoxia

b) in heart failure, the volumetric velocity decreases and the linear velocity of blood flow increases, which is accompanied by a decrease in stroke volume and an increase in perfusion pressure in the arterioles

14. Sensitivity to catecholamines of the hypertrophied heart in chronic heart failure a) decreases b) increases