Ethicist: In general it is wrong to use medical treatments and procedures of an experimental nature without the patient’s consent, because the patient has a right to reject or accept a treatment on the basis of full information about all the available options.
Conclusion
Some limited nonconsensual medical research should be allowed.
Evidence
Even though in general it's wrong to not get consent first, if we don't occasionally bypass consent in medical emergencies, we won't be able to get knowledge of the best treatment for emergency conditions.
Evaluate / Goal
Since there's no other way to get this knowledge (the conditional "only if" prevents us from arguing in that style), we could only object to this author by saying,
The author is apparently assuming that this knowledge is valuable enough that it supersedes people's right to give consent to experimental treatments.