Videos have come to be regarded by many as a valuable aid in
helping patients make decisions about their care when such videos supplement a
conversation with a physician that explains possible treatment options. A
number of research studies (here, here and here) suggest that such use of videos can lead to more
informed patients and, for patients approaching the end of life, a greater
likelihood of patients opting for comfort care rather than life prolonging treatments.
I would like to express one source of unease with the use of
video in this context and identify a possible weakness in the associated
empirical studies.
Several studies feature a patient factual assessment, a set
of multiple choice and true/false questions about relevant medical care. Those
who watch the videos and receive a verbal explanation of treatment options generally
score better on this assessment than the control group, who receive only the
ordinary verbal explanation. The authors of the studies conclude from the
assessment scores that the video group are more informed about the relevant
treatment options, and naturally infer that this group’s greater preference for
comfort care over life prolonging care is to be accounted for in terms of their
being more informed than the control group. This offers a positive outlook for
the place of video in supplementing the physician’s verbal explanation as a
means for patient education and empowerment:
When faced with the possibility
of their cancer progressing, participants with malignant glioma who viewed a
video of the various goals-of-care options in
addition to listening to a verbal description were more likely to prefer
comfort measures and avoid CPR, were more knowledgeable regarding the subject
matter, and were more certain of their decision when compared to patients only
hearing a verbal narrative. (“Use of Video to Facilitate End-of-Life Discussions With Patients With
Cancer: A Randomized Controlled Trial”)
An alternative interpretation of the evidence is possible,
however. Might not the participants be having an emotional reaction to the
video, and might it not be this emotional reaction, not their being more
informed, that is causing their comfort care preference? And might not the video
group’s generally remembering more information about medical care, as
demonstrated in the multiple choice and true/false assessment, also be caused by their emotional
reactions to the video? On this reading, it is an emotional reaction to the
videos, not their educational effect, that is causing both phenomena identified by the studies - the higher assessment
scores and the preference for comfort care. If this were so, a reevaluation of
the role of video in informing patients would appear in order.
In order to forestall this kind of objection, the authors of
one study note that “Participants'
comfort level with the video is … reassuring against this possibility [of an
emotional reaction’s causing the treatment preference].”
One might also question whether an emotional reaction can improve scores
on a factual recall assessment. How could that be?
I would note, however, that self reported levels of comfort are
an unreliable guide to a person’s emotional state, even under normal
circumstances, and there is empirical literature suggesting that emotional
reactions may indeed lead to more accurate retention of information, a phenomenon that might better explain the video watchers’ scoring better on
the factual assessment. It is well known in the field of advertising that
coupling a visual emotional trigger with factual information can greatly
enhance future recall of that information. This is not a promising analogue for
doctor patient communication about end of life care options.
The authors of the first video study referenced above concede
that “an emotional response to the video could have influenced participants’
preferences,” and immediately follow with “To
ensure that the video was not biased toward any particular perspective, the
video content underwent extensive scrutiny by numerous oncologists, intensivists,
palliative care physicians, and ethicists with particular expertise in this
field.” But the problem is that scrupulously guarding against bias in a video does nothing to address the possibility
that an emotional response is influencing participants’ preferences.
Perhaps the authors’ point is that an accurate video that may indeed provoke an emotional reaction nonetheless
has educational value when viewed with a physician in the context of a
discussion about treatment options. What can be wrong with seeing for oneself
the unbiased reality of each option, even
if this elicits an emotional reaction?
This may be the crux of the issue. One difficulty is that video
images, however deliberately produced and contextualized, and however true to
the patient’s prognosis, have a power to subvert other, more subtle imaginative
resources that we draw from in making informed personal choices. The
professional lens through which a physician views and interprets an image of a
patient receiving treatment is utterly different from that which shapes a
patient’s apprehension of the same image. By contrast, with the standard model
of doctor-patient communication, a skilled physician can determine her
patient’s reception of her explanation of treatment options and take account of
this reaction in guiding conversation. The reading of emotional cues and the
making of adjustments may not be possible with a video as part of the interaction,
giving less assurance that patient reactions are understood, acknowledged, and
balanced. The role of emotions in patient decision-making is so complex, and
the content of the videos (I’ve seen them) powerful enough that a shift in
patient preferences of the kind observed in these studies should give us pause.
While all acknowledge that aids to genuinely informed end of
life decision making are increasingly necessary, perhaps the jury ought still
to be out regarding the role of video in this context.