Practical work requires deepening in the theory. In this way, the intention of this article is to systematize the concept of "minimal interventions", as well as draw attention to the impact that this type of interventions of the general practitioner can have on the patient, however small and insignificant, their action may seem. The doctor-patient relationship creates contexts that act, in one way or another, on the patient. There is no absence of medical intervention, even when there is no conscious intervention of the doctor on the patient. Non-intervention is a type of intervention. Non-intervention is a bio-fiction. The different types of doctor-patient relationship give rise, naturally, perhaps imperceptibly, to different models of educational intervention. In this scenario, a conceptualization and systematization of the "micro-interventions" in general medicine is presented: minimal, imperceptible, briefs, low cost, zen, human size, opportunistic, small and mild, but continuous interventions. These micro-interventions are cost-effective no matter how small and insignificant their action seems. These minimal interventions of the general practitioner are of great importance and constitute an updated form of the "less is more" rationalist, they express the power of the minimum gesture in general / family medicine, and can transform health / disease on a large scale. In this way we can hypothesize a plausible relationship between the minimal but concentrated and powerful means, that is to say "contextualized", and the intensity of the effect in general medicine. The clarity of the reading of a message depends on the appreciation of the context; what counts is not what, but how. The context highlights or "pulls" the message. Many small people, in small places, doing small things, can change the world.

Just as humans are organically incapable of noticing the minor movements of reality, and therefore we conceive as still bodies whose movement we do not perceive, but, analyzed better, we find that what we perceive immobile always moves internally and externally. And so, many traditional notions such as: stillness, rest, or stability, are very dependent on our perceptual inabilities to notice small speeds. In the same way, there is no absence of medical intervention, even when there is no conscious intervention of the doctor on the patient. "Non-intervention" is a type of intervention. Non-intervention is a bio-fiction. Whenever the scale of analysis of a reality, apparently still, without any intervention, is reduced, it is verified that movement or intervention exists at its lowest scales. What we categorize as still, without suffering any intervention, depends on the threshold of perception that we use (1).

The doctor–patient relationship has been and remains a keystone of care: it is the medium in which data are gathered, diagnoses and plans are made, compliance is accomplished, and healing, patient activation, and support are provided [2, 3]. In family medicine, the type of doctor-patient relationship and its continuity over months or many years generates a context of intervention, of which we may not be aware.

There are three types of doctor-patient relationship that are frequently used with the patient [4-6], and these different types of doctor-patient relationship give rise, naturally, perhaps imperceptibly, to different models of educational intervention [7-9]. TABLE 1 shows a general outline of this relationship between models of communication and education.

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TABLE 1: The Different Types of Doctor-Patient Relationship Give Rise, Naturally, Perhaps Imperceptibly, To Different Models of Educational Intervention.

On the other hand, the family doctor is like a catalyst: "a small amount" of it, when present in the chemical reaction, can produce great results. Thus, the family doctor continuously performs interventions that we can call "micro or nano-interventions": minimum interventions such as, to stop smoking, lose weight, dental hygiene, psychotherapy, etc., which in reality are "maximum" because of their great effects.

Let's use the metaphor of quantum physics to illustrate this effect. In quantum mechanics, the physical phenomena of infinitely small scales act differently from that of larger scales. These interventions or behaviours contain a diverse multiplicity of states. In general, quantum physics does not predict a single result of each observation but quite the opposite. A series of imperceptible changes are generated that configure different apparently fragmented topographies, but that in turn gather to create a single integrity of multiple readings, often of great power.

In this scenario, a conceptualization and systematization of the "micro-interventions" or "minimalist interventions" in general medicine is presented: minimal, imperceptible, briefs, low cost, zen, human size, opportunistic, small and slightly, but continuous, interventions, with the intention of calling the attention on the impact caused by the action of the general practitioner on the patient, however small and insignificant their action may seem, and emphasize the importance of this updated form of "less is more", or the "power of the minimum gesture" in general medicine / family medicine.

Primary health care professionals are in an excellent position to identify, screen, and conduct brief interventions for patients (10). Many are the terms that appear in the bibliography in relation to the micro-interventions. An approach to the classification, conceptualization and systematization of these "micro-interventions" is presented in the TABLE 2.

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Source: self madeTABLE 2: An Approach to the Systematization and Conceptualization of "Minimalist" Interventions in General Medicine

1.-Brief intervention

It would be a brief intervention an intervention which usually less than 10 minutes; but interventions with duration between 2 to 30 minutes enter here. By "brief intervention" we mean implementing intervention that takes very little time. Brief interventions are usually conducted in a one-on-one situation and can be implemented anywhere on the medical consultation continuum. Brief interventions recognise that many people can benefit from being given appropriate information at the right time (11).

In primary care settings, brief interventions last from 5 minutes in brief advice to 15-30 minutes in brief counselling. Brief interventions are not intended to treat people with serious health problems (such as substance dependence), but rather to treat problematic or risky behaviours (such as, substance use). Skilfully conducted, brief interventions are essential to successful. Two common behavioural therapies used as brief counselling are brief versions of cognitive behavioural therapy and motivational interviewing, or some combination of the two (12). 

What is a brief intervention? Screening and brief interventions aim to identify current or potential problems and motivate those at risk to change their behaviour. Brief Interventions can also be used to encourage those with more serious health problems to accept more intensive treatment within the primary care setting, or to referral to a specialised treatment agency. The aim of the intervention is to help the patients understand that their behaviour is putting them at risk and to encourage them to reduce or give up problematic behaviours. Brief interventions should be personalised and offered in a supportive, non judgemental manner. There is strong evidence for the effectiveness of brief interventions in primary care settings for alcohol and tobacco, and growing evidence of effectiveness about other substances. Brief interventions are low in cost and are effective across all levels of hazardous and harmful behaviors and so are ideally suited for use as a method of health promotion and disease prevention with primary care patients (13).

Brief intervention is a technique used to initiate change for an unhealthy or risky behaviour such as smoking, lack of exercise or alcohol misuse.  Brief interventions are based usually on motivational interviewing techniques. Motivational interviewing is a technique which aims to be both non-judgmental and non-confrontational. Its success depends largely on the presentation of objective feedback based on information provided by an individual (14, 15).

NICE recommends that all staff in contact with the general public be trained to deliver a very brief intervention. This is defined as an intervention taking up to two minutes that follows an “ask, advise, assist” structure – for example, recording patients’ smoking status and advising them that smoking cessation services can offer effective help to quit. Depending on patients’ response, they may be directed to these services.

Examples of very brief interventions may occur in any contact with the patient or their caregivers or their family, for any reason. For example, opportunities for very brief interventions on smoking include when the general practitioner treats a new patient, when it treats a common cold, or an exacerbation of chronic bronchitis, or visits a pregnant woman, or when the adult patient accompanies her children small, etc. In each case, the general practitioner would identify whether the patients smoke, demonstrate the relevance of the habit to the outcomes of their treatment, care or future outcomes for themselves or those they care for, and offer a referral for further support for change.

As with tobacco, you can think about alcohol, drug consumption, etc., and in general, about behaviours, ethnicity or family history of the patient who could put their health and wellbeing at risk. A brief intervention may last anything up to half an hour and is defined as verbal discussion, negotiation or encouragement. It may also involve a referral for further interventions or more intensive support. Using a non-judgemental approach and good listening skills, the general practitioner seeks to understand whether patients are aware of the potential consequences of their behaviour on their own health and wellbeing, how they are motivated to change, what barriers to change are, and what support they might need (16).  In summary, there is a growing focus on so-called "brief interventions" which are time-limited with a particular focus on the individual treatment seeker and patient current situation (17- 19).

2.-Minimalist interventions

This is minimal intervention, usually with duration less than 3 minutes. They are small verbal affirmations that generate great therapeutic achievements. It implies that interventions must be limited to the circle of the indispensable, in favour of the tolerance of other milder circumstances; "the minimum that would have to be done with great scope". What be judged as the "acceptable" minimum will be variable due to the differences in resources availability. The "minimalist concept", in a general way, is that things that have been reduced to the essential and the excess materials are removed; all being reduced to the essential, without leftover elements that fill without a sense (20).

We can look at the example of minimalist art: a contemporary artistic movement which emerged in the United States, during the decade of the 60s, in the twentieth century, which has the tendency to reduce their works to the fundamental, using only the minimum and basic elements, therefore only have representations of essential and fundamental things for the artist, who uses the elementary geometry of the forms, seeking the most expressiveness with the minimum resources, being critic to the excess. Minimalist art has been influenced by oriental traditions, such as Japanese, tending to the reduction of elements and the economy of resources.

Minimalism allows most variations towards Zen and Orientalism art. An example of this could be the use of a natural fabric, simple geometric shapes or pure colours. The minimalist art is not only reduced to painting and music, but also to sculpture, design, architecture and furniture, for example, In this sense, today it is common to find minimalist trends, even in decoration of houses and interior spaces, such as rooms, kitchen or furniture. Following these criteria, TABLE 3 shows minimalist interventions characteristics

Table 3: Minimalist Interventions Characteristics

1.-Austerity in the intervention and absence of unnecessary "ornaments"

2.-Maximum simplicity

3.-Messages manipulated as little as possible.

4.-Play with the creation of patient-context contrasts (message is especially highlighted about the specific context of the patient), such as minimalist art could play with "bright-matte", "soft-rough", "opaque-transparent", or "coarse-fine"

5.-Pure or direct messages

6.-Single messages (not several messages together)

7.-Repetitions of messages, which are usually short and with few variations (as in minimalist music)

Source: self made

3.-Human-sized interventions

It's about helping the "the process of becoming a person": If the therapist has within himself, an attitude of deep respect and full acceptance of the client as he is, and towards the potential of the patient to face himself in his situation to the problem, and if these attitudes are impregnated with a sufficient heat, with great affection towards the core of the person, and if a level of communication is achieved, so that the patient, can begin to perceive that the therapist he understands the feelings he is experiencing and they are accepted it in the depth of that understanding, so, we can be sure that the process is already underway.

It is difficult, nowadays, to realize the impact that this simple formulation has had. Its revolutionary implications include the possibility that almost all training in psychotherapy was, at best, redundant and even harmful. The emphasis on the human dimension of medicine requires a reorientation of the priority values: community, ecology, tolerance with alternative lifestyles, equality, "the small is beautiful" - human-sized medicine, personal growth, etc. Human and social problems can not always be resolved through technology, nor can they be reduced to "personal problems" due to bad health habits (21).

Individual and social health can only be improved if decisions are made by people who:

-They relate directly with each other

-They understand the relevance of decisions in their lives

-Decisions are made on a human scale

People can change the system just by thinking about human-scale decision making at a level where there can be interactions between people. Understanding the scale of human activities is fundamental, and this scale is one in which collaboration / cooperation, dialogue and interaction between people can take place.

TABLE 4 presents the concepts of the "human" strategy of "small is beautiful".

TABLE 4: The Strategy of "Small Is Beautiful" Is Based On

1.-Add value to the "micro" -the level where the patient lives

2.-Better knowledge of the context

3.-Searching coalitions and cooperation in health

4.-Better understanding of meanings for the patient

5.-Better levels of patient participation

6.-Promote communication, empathy and compassion in health-patient relationships, integrating the professional visions of patients and citizens

Source: self made

The technologies of "small is beautiful" are specific to general medicine and allow the increase of our efficiency (capacity to attend well at a reasonable cost), for which it is necessary to "understand" patients in their contexts, that is, To be more efficient (and also more effective) is to contextualize better and more deeply. All this implies the development of a new patient model responsible for their health (22-25).

4.-Brief Strategic Interventions

It refers to the intervention "at the right time to succeed". The therapy or strategic intervention does not look for the "deep" causes of the problem, since what is considered is not the way in which the problem has been formed in the past, but how it remains in the present. It is more a knowing how, than a knowing why; that is, we observe how the problem that occurs within the relational system works, focusing on the present interaction and on the observable behaviours that maintain the problem. In other words, how the subject has tried, up to now, to combat or solve the problem and how it is possible to change this problematic situation in the fastest and most effective way. This approach breaks with the belief that problems that persist for a long time necessarily require an equal treatment of long and stormy. The therapy or strategic intervention is not a superficial and symptomatic intervention, but a radical intervention since it aims at the restructuring of the ways in which each one constructs the reality that then confronts, it is therefore to construct therapeutic realities.

From a strategic perspective, only after the change or the new learning has taken place, can knowledge repeat and apply it again; that is, the way of acting is change first the action, and as a consequence of this changes the way of thinking or the framework of the patient's reality. It is intended to change the current situation, and once such a change is established, no matter how small, other minor changes can be made and a snowball effect of these minor changes leads to more important ones (26, 27). A behaviourally-informed, very brief, physician-delivered opportunistic intervention is acceptable to patients and it is an effective way to change behaviours, such as problems related with family cycle transitions, or reduce weight (28).

Small conversations can be used as a diplomatic or tactical strategy, through which you can avoid or address unpleasant or sensitive issues indirectly. For example, when surrounding a certain topic, or referring indirectly to a certain explanation that the patient has to give (for example, regarding lack of compliance with the treatment, etc.), is giving the patient the opportunity to admit and explain, but without this appearing as a direct challenge that could have been seen as punitive. They can be a time when a small talk is used to avoid a "big talk".

5.-"Soft" interventions (“zen”) for hard problems

The word soft may sound weak, inconsistent, without a scientific framework, or as an "extra", something to adorn a proposal whose foundation is in something else.

The difference starts from a historical division between hard and soft sciences, possibly from the exaltation of the positivism of the experimental sciences over the theoretical sciences, and from the physical and biological laws over the philosophical constructions, attributing to the natural sciences extreme qualities of rationality and empiricism that do not always reach in practice. In fact, the soft sciences deal with hard problems (human existence, the meaning we attribute to it, the deep motivations of behavior) while the hard sciences deal with soft problems (inanimate objects, natural phenomena). This type of interventions is related to "Mindfulness", and in this way incorporates "soft" interventions (such as the soft movements of some of the yoga practices). The basic idea is that the intervention can generate a positive, creative and permanent learning attitude (29).

6.-Imperceptible interventions

These are interventions of smooth, slow, and gradual movements that are almost imperceptible. These are "minimal" interventions to achieve the maximum effect in the treatment and psychological counselling. They require linguistic models of effective and efficient communication with patients in the counselling and consultation sessions. These "almost imperceptible" interventions are small verbal affirmations that generate great therapeutic achievements and that help overcome resistance to change and strengthen the therapeutic relationship (30).

The doctor can, towards the end of the visit, ask a general question, such as "Good, so what have you got organized for today?" With the word "good" followed by a brief pause, the end of a topic and the beginning of other is indicated This way, the doctor indicates that the essential purpose of the visit is over, and you enter into a topic that seems informal and friendly and a prelude to closing the conversation, but the doctor can use it in a certain way, subtle and expert to establish a connection with the patient, obtain clinical information, and perform a minimalist intervention, in a very short time. For example, in a patient who is visited after surgery in ulcerative colitis, she may respond that "your friend has a day off from work, so they probably do some errands and watch a movie. "From this answer, you can get an idea of the patient's energy levels, mood, social network and confidence, since all these variables are significant markers of convalescence and patient recovery.

Something similar happens when, practically without preliminaries, patient enters to consulting room and doctor asks "Is it a smile?" This observation of extremely economic opening fulfils many functions: it is a variant of "How are you?", but it is more than a greeting; here, you get information from the patient, determining if things were going well or not, and by doing this, you can also measure the effectiveness of the treatment or the advice given in the previous visit (31).

7.-Adapted interventions

It is based on the power of word choice to motivate or alienate patients and parents during counselling. For example, for advice about obesity, Latino parents find some descriptions of weight motivating and other offensive. Latino children are disproportionately affected by obesity, but are less likely than non-Latino children to receive guidance on obesity. The most desirable / motivating and least offensive terms in English are "unhealthy weight" and "too much weight for your health"; the corresponding terms in Spanish are “demasiado peso para su salud” and “demasiado peso para su edad.” The commonly used clinical terms "high BMI" and "overweight" are often non-motivating both in English and in their translation into Spanish. Finally, parents become very offended by "chubby", "fat", “gordo,” and “muy gordo.”

Therefore, we must remember that our clinical jargon or attempts to use colloquialisms in health counselling can be perceived in a way that motivates or empowers patients or parents. This not only happens with obesity, but it happens with the whole spectrum of medical problems, such as mental health, food, use of media or discipline. A good start for the tailored intervention may be to ask patients or parents what terms they prefer, and using these terms consistently (32).

8.-Low cost interventions

Educational interventions have to be effective, but in addition, factors such as fidelity, sustainability, viability and profitability of the intervention must be considered. Moreover, special attention should be given to intervention modalities that could be effective in low-resource settings (33). Small interventions are essentially low cost. Any small intervention that results in an improvement in the broad sense of the quality of life of its users is considered effective and efficient. The ultimate goal of medicine and public health is to identify simple, cheap and effective interventions that are able to act successfully or prevent or reduce health problems and the consequences of the disease (34). In this framework, the reviews of the effectiveness of small educational interventions show positive results, such as a significant reduction in the incidence of diabetes through lifestyle interventions in patients with oral glucose intolerance (35).

9.-Small interventions, but continuous interventions

Continuity of care is a characteristic of general medicine, which is defined in terms of relationships, rather than in terms of diseases or technology. The continuity of relations between the family doctor and the patients in their environment, even in an implicit way, builds trust and creates a therapeutic context, and allows the doctor to use the available time more productively (36, 37). Likewise, the concept of "prevention" is important in medicine, especially in family medicine. The conceptual basis of these tasks is “opportunistic prevention”, because every contact with patients provides opportunities for the prevention of illness and the encouragement of people to adopt more healthy life-styles, even when the patient has come to consultation for an apparently unrelated problem, which has to be dealt with first (38). On the other hand, repetition as a learning method is a natural and effective way. The repetition of simple messages makes an educational intervention more effective (39). In this way, the continuity of care is the substrate that allows the repetition of messages making an adequate use of human and natural resources in general medicine (40).

Diagnosis and treatment in medicine is a matter of scale. It is about making the decision-making process at an appropriate scale. The family doctor is like a "little enzyme" that looks insignificant at first sight, but on which depends the rhythm and speed of a chemical reaction. Our task as general practitioners / family physicians is a minimal, humble, but very important task: to discover what is between the interest of the people for health and to know what we can do to make health happen, favouring that individual is in a better position to advance toward his health, using the minimum effort by us. The work of the family doctor resembles that of a powerful reagent. Its presence is never dominant, it is always prudent, and adapted to the demands of each situation, and this is evident in the speed and quality of the results (41).

In popular perception, the "small talk or intervention" is seen as formulaic, peripheral, trivial, minor or unimportant. However, the idea that the small talk is not important has been questioned by others who show that small talks can play a key role in promoting interpersonal and, at times, transactional objectives. As a limitation, it can be cited, that some functions of the small talk seem ambiguous or contradictory; for example, a small talk may allow speakers to approach or avoid discussion of more serious issues (31). On the other hand, it is hypothesized that the general practitioner who performs small-scale interventions in a continuous way, experiences fewer symptoms of exhaustion, less physical demand, and less workload (42).

Finally, an analogy could be drawn between the minimalist interventions in general medicine and minimalist art, which can be illustrate by the work of the painter Josef Albers (43): it is the result of a true "economy of form" and a decided will of simplicity with the productive use of means and resources intentionally limited which gives rise to explosions of colour, with great material content and high poetic and spiritual content; so, the goal in art and in life (and in general medicine) is to achieve the "maximum effect" through the "minimum of means." (FIGURE 1)

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In this way we can hypothesize this way we can hypothesize a plausible relationship between the minimal but concentrated and powerful means, that is to say "contextualized", and the intensity of the effect in general medicine. The clarity of the reading of a message depends on the appreciation of the context; what counts is not what, but how. The context highlights or "pulls" the message (FIGURE 2).In short, practical work requires deepening in the theory, and many small people, in small places, doing small things, can change the world.

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In short, practical work requires deepening in the theory, and many small people, in small places, doing small things, can change the world.