Evaluation of Candidates for Face Transplantation

and Veronica Tomasello2



(1)
Department of Plastic Surgery and Burns, University Hospital Vall d’Hebron, Barcelona, Spain

(2)
Cannizzaro Hospital, Catania, Italy

 



Abstract

There has been an evolution in the management of face disfigurement in centres with face VCA programmes. Patients referred to plastic surgery clinics are no longer studied and offered traditional, though complex, reconstructive techniques. The deformity and the whole medical and psychological status of patients are taken into consideration, and all available options, including face transplantation, are considered in regard to expected aesthetic, anatomical and functional outcomes. This process allows plastic surgeons to estimate in whole the defect, deformity, functional and social impact and make a valid indication of the technique of choice for any given defect. Most of the patients will be offered and be reconstructed with classical reconstructive techniques, while only a few patients will enter the face transplant programme. In our hands, only 10–20 % of patients entering the face transplantation programme will end up with an indication and final ethical committee accreditation.


Keywords
Medical evaluationIndicationsContraindications


Patient selection in face transplantation is a complex process that starts with the indication for face transplantation, inclusive all psychological, ethical and legal issues, followed by a complete medical workup.

The evaluation of patients begins in the initial visit. The patient should be evaluated within a multidisciplinary team to make a full medical and biographical picture of the physical, functional, social and psychological deformity and disability and make a final indication for face vascularised composite tissue allotransplantation. In general terms, the technique, operation and some issues of transplant surgery are very similar to that encountered in other solid organ transplantation. However, when we consider in full patient evaluation and selection, there are significant differences that have to be taken into account.

There has been an evolution in the management of face disfigurement in centres with face VCA programmes. Patients referred to plastic surgery clinics are no longer studied and offered traditional, though complex, reconstructive techniques. The deformity and the whole medical and psychological status of patients are taken into consideration, and all available options, including face transplantation, are considered in regard to expected aesthetic, anatomical and functional outcomes. This process allows plastic surgeons to estimate in whole the defect, deformity, functional and social impact and make a valid indication of the technique of choice for any given defect. Most of the patients will be offered and be reconstructed with classical reconstructive techniques, while only a few patients will enter the face transplant programme. In our hands, only 10–20 % of patients entering the face transplantation program will end up with an indication and final ethical committee accreditation.


6.1 The Initial Visit


Large tertiary institutions that have a long tradition in transplantation medicine and run a robust programme in plastic and reconstructive surgery normally host face transplantation programmes. Level I trauma centres, burn units or centres and superregional craniomaxillofacial programmes are usually normal referral units in such institutions.

The initial referral visit for face transplantation should not differ much to that usually in place for face reconstructive surgery. In practice, it is recommended that all patients be referred to the face reconstructive outpatient clinic for a complete initial visit where he/she may meet all surgical team members and a complete analysis of the problem be made. The rationale behind this approach resides on the basis that face transplantation is not a plain composite tissue allotransplantation venture but a complex reconstructive option, in which the reconstruction is performed by means of the allotransplantation of face units/anatomy and function. Evaluation of patients with severe face deformities then follow a step-wise manner in which all reconstructive options are taken into account and a final master plan for any given patient is delineated. It may include different classical techniques that may render a good final outcome of a definitive indication for face transplantation.

There exist few initial steps that need to be explored and fulfilled in order to plan a comprehensive evaluation for a face transplantation. During the initial visit, team members check all the inclusion and exclusion criteria for face transplantation; explore and analyse the patient’s deformity, possible plastic surgery indications and required techniques; and list all patient’s complaints, aesthetic, functional deficits and patient’s expectations (Fig. 6.1). During this initial visit, a complete blood test is run in order to rule out any formal contraindication for face transplantation. During this initial(s) visit(s) (it may be necessary to have different interviews with the patient), the patient is provided with all necessary information. It is mandatory that the patient receives all information regarding the positive, negative aspects of the procedure, risks and benefits and that he/she understand the experimental aspect of vascularised composite tissue allotransplantation. An introduction to the multidisciplinary team is also enforced and the requirement of different interviews with the core members of different specialists that will be required. Patients are also informed of the whole selection process and the administrative steps that must be followed:

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Fig. 6.1
Recommended process for the evaluation of face transplant recipients. Hospital admission allows for an effective process with good interaction with team members




  • Full medical and surgical examination with any diagnostic laboratory, functional and radiologic examinations


  • Psychological and psychiatric evaluation


  • Psychosocial evaluation by social workers


  • Informed consent for clinical experimental treatment


  • Ethics committee submission if an indication for face transplantation is reached


  • Submission to the health authorities (local and national transplantation bodies, organ procurement organizations)


  • Final accreditation and search for donors

Patients that are considered candidates for face transplantation are then admitted to the hospital. They are informed and warned that a hospital admission for a 2–3-week period may be necessary to fulfil all the tests and requirements according to the VCA face protocol. We have found that admitting patients to the plastic surgery ward is very valuable for both performing all necessary examinations and interviews in a timely fashion and for a good interaction of patients and their families with the transplantation team and ward nurses. During all long “stand-by” hours between tests and interviews, patient behaviour, social interaction, resilience and stress response can be evaluated. The report of caring nurses is extremely valuable to make a general picture of the psychosocial status of the patients and his/her social environment. Strong and weak points may be detected and encouraged or treated accordingly.


6.2 The Evaluation Process


It cannot be overstated that the initial(s) visit(s) is a key element of the evaluation process. During these visits the surgeon-in-chief and team members evaluate the face deformity and obtain a clear picture of the anatomic deformity, the functional impact and the general psychosocial status of the patients. Full information of the goals of face transplantation, benefits, risks and possible side effects, including death, are discussed. Patients reaching the evaluation process have understood and accepted the overall principles and goals of face transplantation, accepting a full examination with its possible positive or negative outcomes.

Different specialists, units and services are involved during the evaluation process. It is a thorough medical and surgical workup; hence, a case manager and a surgeon-in-chief that control the process and lead the process must pilot it. Plastic surgery specialists evaluate all questions and issues regarding the surgical aspect of the deformity (anatomic areas to be extirpated and donor tissue requirements). The former includes a full anthropomorphic evaluation, physical examination (including radiologic evaluation) and skin phototype. Medical specialists of the face transplant team should evaluate the health status and well-being, paying a special attention to those conditions that currently contraindicate a vascularised composite tissue allotransplantation (malignant neoplasm, renal failure, hepatic insufficiency, ASA III or IV classification, etc.) and other medical conditions that merit attention in order to improve or treat them before the transplant. Some of these conditions may exacerbate with immunosuppression or contraindicate certain drug regimens. Psychologists and psychiatrists transplant specialists evaluate all patients. Special attention is focused to pre-existing pathology, normal or superior intelligence coefficient, previous adhesion to medications and medical treatments, etc. The psychological–psychiatric evaluation is then directed to develop a patient’s profile, with an emphasis on the risk of abandon for immunosuppression, family and social support, pre- and posttransplant education, and produce an analysis and recommendations. A negative report from the transplant psychologist and psychiatrist contraindicates a face transplantation and is a formal exclusion criterion.


6.2.1 General Evaluation


The general evaluation of a patient being considered for a face transplantation does not differ much from other face plastic surgery patients. A general master plan has to be created; hence, information regarding medical status and anatomic and functional deformity should be gathered.

The patient has to be identified and all demographics recorded. Surgeons bear in mind that they may be entering a clinical research protocol and a special identifying number shall be assigned. Patient’s telephone and relatives’ telephone numbers are recorded for future direct contact. The disease (if any) and type of deformity are recorded and studied thoroughly. Height, weight and all anthropomorphic measurements are recorded (Table 6.1); a hand-held Doppler is performed to assess the patency of face vessels and all results recorded.


Table 6.1
Common anthropomorphic clinical measurements in face transplantation





















1. Interpupillary distance

2. Intercanthal (external and internal) distance

3. Head perimeter (brow level)

4. Hairline–nasion distance

5. Nasal length

6. Upper lip–chin distance

7. Hairline–chin distance

8. Inter-preauricular distance

A full history is next. Special attention is paid to allergies, medications and history of past surgeries and type, transfusion requirements and any history of transfusion reactions and any relevant past medical history. Immunosuppression drug protocols may produce different side effects; thus the medical history should focus on renal diseases, hepatic problems, cardiovascular and any other endocrine disturbances. Systemic hypertension, posttransplant diabetes, renal failure or hepatic insufficiency may develop after the transplant; consequently, any minor problems should be treated and resolved before the transplant. Important medical problems may contraindicate the face transplant. The type of nutrition and dietetic problems or deficiencies are recorded and type of airway assessed. It is not uncommon, especially in posttraumatic deformities that the patients present with a gastrostomy tube feeding and a patent tracheotomy. During the initial visit and the posterior general evaluation (together with the nutritional and anaesthetic assessment), the need for a gastrostomy tube feeding and a temporal tracheotomy is discussed with the patient if they are not yet in place. They may be necessary and ease the postoperative period.

The face examination is an important part of the general evaluation of the patient and will aid in the decision process for the formal indication and the type of transplant (Table 6.2). The type of deformity and aetiology is recorded. Areas affected are studied and evaluated. Any relevant defects, missing anatomy and altered function are recorded to make a general picture of the deformity and the functional and emotional impact of the face disfigurement. Functional impact is best evaluated by the assessment of the visual, auditory and sensory and motor nerve status, together with an exploration and evaluation of the intraoral structures:


Table 6.2
Face general evaluation

















1. Areas affected

2. Involvement of face sphincters (oral and orbital)

3. Cranial nerve involvement

4. Ocular status

5. Hearing status

6. Intraoral structures status

Apr 2, 2016 | Posted by in General Surgery | Comments Off on Evaluation of Candidates for Face Transplantation

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