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Biomedical subjects

J S Mark

Publications and source records attributed to J S Mark.

2 recordsLinked to original sources

Informed consent for colonoscopy. A prospective study.

Central to the nature of the physician-patient relationship is how fully patients are informed about their disease and prognosis and how active a role they take in deciding treatment; the "autonomy" and "paternalistic" models represent current poles of physician behavior. While informed consent has become ubiquitous in medical practice, it is not clear to what extent the value of patient autonomy has entered into everyday medical decisions. To evaluate informed consent, we prospectively surveyed 102 outpatients scheduled to undergo a colonoscopy and 16 of their physicians. The colonoscopy examination is straightforward and offers an optimal opportunity for patient participation in decision making. We found that most patients wanted guidance from their physicians and most physicians did not view the patient as autonomous. The more traditional parentalistic model continues to influence the physician-patient relationship, at least for this technical endeavor.

Attitude of Health Personnel

Compound sodium lactate (Hartmann's) solution. Caution: risk of clotting.

We have observed blood clotting in blood administration sets where Hartmann's solution (Travenol) has preceded blood transfusion. This is due to calcium ions (Ca++) contained in the Hartmann's solution and is more likely to occur at 37 degrees C. We suggest that this potential hazard be more widely realised and that the practice cease.

Blood Coagulation