Answer:
The answer is B double-blind study
Explanation:
In this type of scientific study neither the experimenter nor the researcher knows the study sample, during the period that the experiment lasts, in order not to influence the results.
Answer:
The correct answer will be option-A
Explanation:
Electrocardiogram or ECG is the recording and representation of the electrical changes that are taking place during the cardiac cycle.
The QRS complex is preceded by the P wave or atrial systole or atrial depolarization after which the electrical signals are passed on to the AV node.
As soon as the AV node passes the electrical signals to bundle of His, it is observed in as the QRS interval which represents the atrial diastole and the onset of ventricular depolarization.
Thus, option-true is the correct answer.
An ongoing clinical protocol at your site includes weekly blood draws to assess an exploratory endpoint. Unfortunately, participants are not happy about visiting the clinic weekly, and they are considering dropping out. Therefore, a protocol amendment is being prepared to remove the weekly blood draw. This change can be implemented once the protocol is finalised and submitted to the FDA.
<h3>
What is the FDA?</h3>
The Federal Food and Drugs Act, which was passed in 1906, led to the creation of the Food and Drug Administration (FDA). The organisation is divided into divisions, each of which is in charge of the majority of the organisation's responsibilities relating to food, medicines, cosmetics, animal food, nutritional supplements, medical devices, biological products, and blood products.
The FDA is renowned for its efforts to control the creation of new medications. All new pharmaceuticals must undergo clinical trials, according to regulations set down by the FDA. Before medicines may be offered to humans, pharmaceutical companies must put them through four stages of clinical testing.
To know more about FDA, visit:
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