1. Describe with a neat sketch how the nanoparticles are prepared employing the top-down methods, namely, milling and lithography. 2. Explain with a suitable diagram, the synthesis of nanostructured materials….
A pacemaker that is temporarily employed during open heart surgery, with the electrode being placed in contact with the ventricular epicardium, is called a pacemaker.
A. A pacemaker that is temporarily employed during open heart surgery, with
the electrode being placed in contact with the ventricular epicardium, is called a pacemaker.
B. A permanent pacemaker is implanted in a surgically created pocket beneath
the skin in the patient’s
d. upper thigh.
C. Permanent pacemakers can be used to treat all of the following conditions
a. symptomatic bradycardia.
b. 3rd-degree AV heart block.
c. recurrent tachycardia.
d. premature ventricular complexes.
D. The pacemaker generator
a. consists of a power source, sensing amplifier, computer logic for the
pacemaker, and output circuitry.
b. is powered by two or three AAA rechargeable batteries.
c. is susceptible to damage from body water vapor diffusing into the
computer circuitry and rejection by the immune system.
d. is typically replaced after every 5 years of use