Question

DONE ON PREVIOUS TEST: Please write T in front of the statement, if it is true and F, if it is Falsc. (15 points) Patients with normal cardiac output have more area under their temperature-time curve than patients with coronary insufficiency. Thermodilution is the gold standard of noninvasive cardiac output measurement. Piezoelectric transducers are used as sensors in ultrasonic maging. Cross-sectional, 2D, ultrasonic scanning is superior to M- mode ultrasound. Using perfusion analysis, thallium-201 imaging is a good quantitative predictor of myocardial viability. The success of an endarterectomy can be assessed using You can apply auscultatory technique to assess heart activity using a sphygmomanometer. Gap junctions work like electric cables, conveying excitation signals of biocurrent between cells of the myocardium Single photon emission computer tomography is a technology that can help assess heart output. - . -A person with a systolic pressure of 200 and a pulse pressure of 55, will have a diastolic pressure of 135 With a MABP and diastolic pressure of 145 mmHg, a man in his 40s can forget about his plans to buy a dream home. In PET scanning, substances release protons that react with electrons to emit photons which are captured by camera. Cross-sectional, 2D, ultrasonic scanning is superior to M mode ultrasound. Myocardial contrast m be elicited using M-mode echocardiography Ultrasonic flowmeters can help detect mean blood flow

Answer 1

1. FALSE: Cardiac output is inversely proportional to the area under the thermodilution curve. The smaller the area under the curve, the greater the cardiac output. Hence, if the area under a patient's thermodilution curve is getting smaller, cardiac output is increasing. Therefore, a patient with coronary insufficiency have more area under the thermodilution curve and their cardiac output is lower compared to a normal individual.

2. FALSE : Pulmonary artery catheter (PAC) is considered as the gold standard for measuring cardiac output. Thermodilution uses temperature as the indicator. We have to put something of a different temperature into the body usually cold saline and look at the passage of the cold through the system. It can be repeated over and over again in a very short amount of time.

3. TRUE : Ultrasound can be used to make point-point distance measurements by transmitting and receiving discrete bursts of ultrasound between transducers. One transducers that are used to capture ultrasound imaging is called piezoelectric transducers.

4. FALSE: M-mode ultrasound is considered as superior among other ultrasound methods. It has good temporal resolution and i useful in detecting and recording rapid movements and can also correlate with ECG with M-mode tracings. Moreover, it is also used for measuring chambers dimension and calculating ejection fraction.

5. FALSE : The most widely used method to assess the myocardial viability is thallium-201. But there are number of studies showing that, Thallium-201 may underestimate the full extent of myocardial viability after 2 to 4 hours of stress test. If so, repeat imaging is necessary to overcome this limitation.

6. TRUE: The outcome of the carotid interventions can be assessed using a carotid interventions but it depends on the technical precision of the arterial repair using ultrasound imaging.

7. FALSE: Using a sphygmomanometer, the healthcare provider can find out the blood pressure of the heart but the heart activity can be detected using an electrocardiography. So, that heart rhythm abnormality can be assessed easily