If you mean the apostrophe in the word "patient's," yes, it is used correctly. The hint is the use of the singular possessive, "her," which refers to one patient, thus, "the patient's cardia..."; if the sentence were worded to include a plurality, "are secondary to their thyrotoxicosis," then one should use the plural possessive, "the patients' cardia...". If, however, you mean the apostrophe before the first word in the sentence, no, it is not used correctly: to be correct it requires a closing apostrophe at he conclusion of the sentence.
Income Statement , Position Statement and Cash Flow Statement correctly states the economic premise of a company
increase the amount of voltage
She can do it correctly, couldn't she? Is the correct question tag of the statement.
No, I shouldn't, it correctly describes.
The emporor controlled both the government and the church all you poeple out there get a life
a satellite is built on earth and then placed into orbit. which statement correctly completes the following sentence
one-to-one ratio
The Taj Mahal has a large, white dome, would be a statement that correctly describes a characteristic of the Taj Mahal. The dome is sometimes referred to as an onion dome.
one-to-one ratio
Identification is part of the authentication process.
scientific law
theory