MedLine

Healthcare & Well-being product lines by Artnovion

Well-being spaces

Well-being spaces offer restful and peaceful environments in order to make customers experience more pleasant and enjoyable.

Acoustic quality in this kind of space is a base requirement. However, due to the often highly humid environments this kind of facility has particular characteristics and needs that demand for more specific solutions.

While some of areas (atriums, waiting rooms or corridors) will require only standard acoustic treatment solutions, other spaces (like changing rooms, locker rooms, gyms, pools, jacuzzi, saunas or massage rooms) will greatly benefit from acoustic treatment solutions also offer additional features such as odour control, mould control and have cleanable or antimicrobial surfaces. It’s all about treating noise in a healthy way.

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Healthcare and Well-being facilities are two very particular environments where noise problems have the potential to become major determinants of service quality.

Healthcare facilities

But when it comes to healthcare facilities, the stakes are much higher. Acoustic levels in hospitals are very high and have been growing significantly since 1960. On average, daytime noise levels have risen 0,38 dB and nighttime levels have risen 0,42 dB each year. (I. Busch-Vishniac, 2005) The sources of noise are multifold and are both internal and external. Internal noise coming from bedside life support systems, infusion pumps, incubators, multiple monitors and alarms adds to

the external noise from cooling systems, emergency generators, often construction or renovation works, along with constant ambulance sirens or nearby public transport. (Aurélio & Tochetto, 2010)
Furthermore, the noise generated by the hospital staff, the communication and circulation of patients, patient care teams and families contribute to the epidemic of noise in healthcare, which factors as one of the biggest complaints of both patients and staff.

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Regardless of where the patient is, noise generated by equipment and other people tend to dominate the hospital’s acoustical experience.
Acoustics impact perceptions of privacy, comfort, safety, and security for patients and their families. (Acoustics in Healthcare Environments, 2010)

The consequences of noise on hospitalized patients is well documented and has a negative impact on a patient’s physiological health, increasing their chances of being readmitted to the hospital. (I. Hagerman, 2005) Depending on the condition of the patient and the level of care, poor acoustical conditions may impact recovery and healing processes in different ways.
In a physiological response to noise, adult patients in a general ward can experience startle reflexes, increased blood pressure and higher respiratory rates which may lead to irritation, impaired pain tolerance, confusion, irritation and delirium. (Claudia Giliberti, 2015) Noise can also cause significant sleep disruption, which is also closely associated with cardiovascular stress, impaired immune function and catabolic metabolism.

These effects are particularly significant in Intensive Care Units (ICU) where noise has been reported to be associated with a greater requirement for sedation and anesthesia. (Avinash Konkani, 2012)

The healthcare environment where noise is potentially the more deleterious is the Neonatal Intensive Care Unit (NICU). Besides the cardiovascular effects that are

well documented for adults, newborn or premature babies are more vulnerable to acoustic stimuli. In these patients, noise has been associated with more serious consequences, such as apnea, hypoxemia, the elevation of cranial pressure and modulation of neuroendocrine and immune systems. (B. H. Morris, 2000) (E. M. Wachman, 2011)
In these patients, stress responses may increase the risk of adverse effects like growth impairment, auditive deficits, retinopathy, and affect many other early development processes. (A. Almadhoob, 2015) Parental communication with newborns, namely the ability of the baby to recognize and relate to the mother’s voice, is fundamental for attachment processes, and is also affected by surrounding noise, leading to disruption to the baby’s wellbeing. (Vera Santos, 2018)

Besides the effect on patients, high noise levels also affect healthcare professionals, contributing to distraction and memory loss which may lead to accidents and errors. (M. Shahheidari, 2012)

Speech intelligibility and privacy issues are other significant concerns for healthcare environments where clear communication between professionals and patients is paramount. (Acoustics in Healthcare Environments, 2010)

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For all the above reasons, the World Health Organization (WHO) has developed guidelines for noise in healthcare facilities where nighttime noise should not exceed 40 dB (LAmax). For inpatient wards, the recommended interior noise level is 30 dB LAeq during daytime and 35 dB LAeq at night. (Taskforce, April 1999). In 1997, the American Academy of Pediatrics established that noise levels higher than 45 dB should not be admitted in a NICU setting. (American Academy of Pediatrics, 1997)

Despite abundant evidence and recommendations, virtually no healthcare facility has yet been able to meet these standards. Instead, the acoustic reality in most of the studied sites is still so far away from these values that some authors have suggested the definition of more realistic noise control objectives. (Darbyshire, 2016)

Particular concerns for healthcare facilities

Acoustical treatment in healthcare facilities needs to take in to account particular concerns related to infection control. The incidence of Hospital-Acquired Infections (HAIs), also known as nosocomial infections has been growing exponentially since 1980 due to the emergence of multidrug-resistant bacteria microorganisms. (A. C. Abreu, 2013) These are infections that occur in patients in a hospital or healthcare facility which were not present at the time of admission, including infections that are acquired in the hospital but are diagnosed only after discharge. Patients and patient care teams carry pathogens on their hands resulting from direct contact with other infected patients or colonized surfaces. Once patients or surfaces become contaminated, they act as a reservoir for infectious bacteria. (Collins, April 2008) Environmental contamination can persist for many days and months with several pathogens, including methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE), norovirus and Clostridium difficile (C. difficile). (Sehmi, 2016)

Besides regular scheduled cleaning and disinfection of hospital equipment and surfaces, (including alternative methods that go beyond basic cleaning), many other strategies have been adopted for controlling nosocomial infections. (Sehmi, 2016)

A promising component of these strategies is the use of antimicrobial surfaces that prevent microorganism adhesion and can reduce microbial burden without staff having to spend hours manually cleaning surfaces. (Kristopher Page, 2009)
There are several options available to give antimicrobial properties to hospital surfaces. One of the most effective methods consists in using metal ions (Copper or Silver) which have the well-documented ability to break down bacterial cell walls, resulting in microbicidal and sporicidal activity. (Otter, 2014)

These ions can be embedded in surface coatings, attributing antimicrobial and anti-fungal properties to these surfaces.

Because bacteria are also responsible for producing the scent molecules that cause unpleasant odours, another significant result of the bactericide action of these coatings is also an anti-odour effect. (Chakraborty, 2015) For this reason, most antibacterial surface treatments or coatings also convey anti-odour properties to the treated areas.

These metal ions can also be incorporated into textiles, conveying to fabrics the same antimicrobial properties. (Diana Santos Morais,2016) Studies have demonstrated that silver and copper ions remain bonded to the fabric fibers in a durable way which that can resist multiple washings. (Oguz Demiryurek, 2019)

An obvious strategy to meet both acoustical and infection control standards in healthcare facilities is therefore to use cleanable and antimicrobial surfaces and fabrics as components of the acoustic treatment products and equipment.

While in public and open access areas noise level can be managed with standard products as in any other public building in restricted inpatient areas, the need for acoustical treatment incorporating cleanable or antimicrobial surfaces becomes increasingly more significant, as the level of care grows for each type of space.

The problem of Hospital-Acquired Infections has also led to the creation of infection control teams dedicated to address any aspect of hospital life which may result in increased risk of infection transmission or in further growth of drug resistances. Amongst many other tasks, these teams are called to analyze and approve all aspects of infection control related to any new equipment that may need to be installed for acoustic treatment.

In conclusion, there is therefore an obvious demand for acoustic treatment for well-being and healthcare facilities. In this context, acoustic equipment needs to deliver both effective noise control and infection control properties.

Metal Ion Antimicrobial Mechanism

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