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The NAS consumed the next four years, from 1968 to 1972, in preparing its report. It concluded, finally, that although the protective coupler requirement was "an acceptable way of assuring network protection," a registration system also merited consideration. Under such a system, the FCC would promulgate minimum specifications designed to protect the telecommunications network from electrical harm. Equipment meeting these standards would be exempt from the coupler requirement, but couplers would still be mandatory for unregistered items. Three years after adopting the NAS report, the FCC implemented this recommendation and invalidated AT&T's post-Carterfonetariffs.See In re Proposals for New or Revised Classes of Interstate and Foreign Message Toll Telephone Service and Wide Area Telephone Service, First Report and Order,56 F.C.C.2d 593 (1975);Second Report and Order,58 F.C.C.2d 736,on reconsideration,61 F.C.C.2d 396 (1976), 64 F.C.C.2d 1058,aff'd sub nom.North Carolina Utilities Commission v. F.C.C.,552 F.2d 1036 (4th Cir.),cert. denied,434 U.S. 874, 98 S.Ct. 222, 54 L.Ed.2d 154 (1977).

Q1

What is the difference between transudate and exudate?

Q2

I wish to ask about Meigs' syndrome. I know that it is an association of

pleural effusion, ascites and benign ovarian tumours or fibromas. Is the

effusion transudate or exudate?

Q3

I have read that patients with cystic fibrosis should not meet each other

socially. Why is this?

Q4

I have a young patient with bilateral hilar lymphadenopathy but no other

manifestations of sarcoidosis. How can I make a diagnosis?

Q5

We have read in your book that continuous oxygen therapy at home

reduces mortality in chronic obstructive pulmonary disease (COPD).

I am concerned that my patient might develop acute respiratory

failure.

Q6

I have a patient with asthma who is on long-term inhaled corticosteroids.

She is very concerned about long-term steroid therapy. Could I replace

the steroids with a long-acting beta2 agonist?

Q7

What is the role of leukotriene-modifying agents in asthma?

Q8

Is it true that the Mantoux test is no longer used?

Q9

Is there a screening test that is useful for the diagnosis of lung cancer?

Q10

For how long should treatment be continued for cervical

lymphadenopathy and abdominal tuberculosis? What role, if any,

do steroids play in the treatment of these conditions?