Introduction
BiPAP is a form of noninvasive mechanical ventilation used on patients that have acute respiratory failure. Many of these patients go on noninvasive ventilation due to COPD exacerbations that are infectious, with congestive heart failure, and ventilator parameters based on their clinical assessment and changes in arterial blood gases. Two different studies were conducted on COPD patients, using a BiPAP machine to improve exacerbations and their activities of daily living. There are many positive outcomes for using these noninvasive ventilators however when used incorrectly, negative outcomes or not changes at all are always possible.
Positive Use for COPD Exacerbations
Previous research used noninvasive ventilation to help those with COPD improve their altered level of consciousness by allowing the alveoli to be ventilated and move the trapped carbon dioxide out of the lungs. When too much carbon dioxide is in the blood, the gas moves through the blood-brain barrier and causes an acidosis within the body, because not enough carbon dioxide is being blown off through ventilation. The BiPAP machine allows positive pressure to enter the lungs, expand all the way to the alveoli, and create the movement of air and blood. Within the study, two different machines were used; a regular BiPAP ventilator and a bilevel positive airway pressure – spontaneous/timed with average volume assured pressure support, or AVAPS. The latter machine uses a setting for a set tidal volume and adjusts based on inspiratory pressure.
A total of 22 patients were admitted for the study with 11 in simply the BiPAP side and the other half for the BiPAP using the AVAPS. Every patient had to be in a select range of APACHE II score within 4, ag...
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...deem it necessary to enhance the person’s life and those around them.
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Ventilator Associated Pneumonia (VAP) is a very common hospital acquired infection, especially in pediatric intensive care units, ranking as the second most common (Foglia, Meier, & Elward, 2007). It is defined as pneumonia that develops 48 hours or more after mechanical ventilation begins. A VAP is diagnosed when new or increase infiltrate shows on chest radiograph and two or more of the following, a fever of >38.3C, leukocytosis of >12x10 9 /mL, and purulent tracheobronchial secretions (Koenig & Truwit, 2006). VAP occurs when the lower respiratory tract that is sterile is introduced microorganisms are introduced to the lower respiratory tract and parenchyma of the lung by aspiration of secretions, migration of aerodigestive tract, or by contaminated equipment or medications (Amanullah & Posner, 2013). VAP occurs in approximately 22.7% of patients who are receiving mechanical ventilation in PICUs (Tablan, Anderson, Besser, Bridges, & Hajjeh, 2004). The outcomes of VAP are not beneficial for the patient or healthcare organization. VAP adds to increase healthcare cost per episode of between $30,000 and $40,000 (Foglia et al., 2007) (Craven & Hjalmarson, 2010). This infection is also associated with increase length of stay, morbidity and high crude mortality rates of 20-50% (Foglia et al., 2007)(Craven & Hjalmarson, 2010). Currently, the PICU has implemented all of the parts of the VARI bundle except the daily discussion of readiness to extubate. The VARI bundle currently includes, head of the bed greater then or equal to 30 degrees, use oral antiseptic (chlorhexidine) each morning, mouth care every 2 hours, etc. In the PICU at children’s, the rates for VAP have decreased since the implementation of safety ro...
Epidemiology of VAP Hunter, Annadurai and Rothwell defines ventialtor-associated pneumonia as nosocomial pneumonia occurring in patients receiving more than 48 hours of mechanical ventilation via tracheal or trascheotomy tube. It is commonly classified as either early onset (occurring within 96 hours of start of mechanical ventilation) or late onset (>96 hours after start of mechanical ventilation. A ventilator is a machine that is used to help a patient breathe by giving oxygen through an endotracheal tube, which is a tube placed in a patient’s mouth or nose, or through a tracheostomy, which is a surgical opening created trough the trachea in front of the neck. Infection may occur if bacteria or virus enters the tube into the lungs or airways by manual manipulation of the ventilator tubing. Ventilator-associated pneumonia accounts for 80% of hospital-acquired pneumonia, 8-28% of incubate... ...
Oxygen, inhaled bronchodilators, inhaled steroids, combination inhalers, oral steroids, phosphodiesterase-4 inhibitors and theophylline are effective medications for COPD (Mayo Clinic, 2016). “Patients with COPD have persistent high levels of CO2, their respiratory centers no longer respond to increased levels of CO2 by stimulating breathing. Therefore, COPD patients with more severe hypoxemia are at higher risk of CO2 retention from uncontrolled CO2 administration” (Van Houten, p. 13). For nurses, “It is important to administer the lowest amount of O2 necessary to patients” (Van Houten, p. 13). Some COPD medicines are used with inhaler and nebulizer devices. It is important to teach patients how to use these devices correctly. (Potter & Perry,
Facilitating spontaneous ventilation during APRV aids in alveolar recruitment, and improves distribution of lung volume to collapsed lung units. In one year retrospective study, APRV was compeered with pressure support ventilation(PSV) in eighteen patients with ALI and ARDS. Pressure support ventilation is a patient triggered, pressure limited, and flow cycled ventilation, it allows the patient to control the rate and depth of each breath. The effectiveness of spontaneous ventilation was investigated by the use of both computed tomography scan and volumetry for a period of three days.6 This study showed superiority of APRV in providing better gas distribution, pulmonary oxygenation, and decreasing lungs atelectasis faster than PSV. The clinicians recorded the main reason for this finding was derived from alveolar recruitment without overdistention during APRV. Airway Pressure Released Ventilation allows spontaneous ventilation while providing an open lung protective strategy. 6 Dr. Varpula and colleagues also compared APRV with other forms of partial mechanical ventilation, SIMV with PS, to study the effect of spontaneous ventilation in improving gas distribution. They observed no differences in clinical outcome between APRV and SIMV in gas distribution. Authors interpreted the finding due to the long study period and the differences
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Chronic obstructive pulmonary disease (COPD) is preventable disease that has a detrimental effects on both the airway and lung parenchyma (Nazir & Erbland, 2009). COPD categorises emphysema and chronic bronchitis, both of which are characterised by a reduced maximum expiratory flow and slow but forced emptying of the lungs (Jeffery 1998). The disease has the one of the highest number of fatalities in the developed world due to the ever increasing amount of tobacco smokers and is associated with significant morbidity and mortality (Marx, Hockberger & Walls, 2014). Signs and symptoms that indicate the presence of the disease include a productive cough, wheezing, dyspnoea and predisposing risk factors (Edelman et al., 1992). The diagnosis of COPD is predominantly based on the results of a lung function assessment (Larsson, 2007). Chronic bronchitis is differentiated from emphysema by it's presentation of a productive cough present for a minimum of three months in two consecutive years that cannot be attributed to other pulmonary or cardiac causes (Marx, Hockberger & Walls, 2014) (Viegi et al., 2007). Whereas emphysema is defined pathologically as as the irreversible destruction without obvious fibrosis of the lung alveoli (Marx, Hockberger & Walls, 2014) (Veigi et al., 2007).It is common for emphysema and chronic bronchitis to be diagnosed concurrently owing to the similarities between the diseases (Marx, Hockberger & Walls, 2014).
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VAP develops in a patient after 48 hours or more of endotracheal intubation. According to a study by Relio et al. (as citied in Fields, L.B., 2008, Journal of Neuroscience Nursing, 40(5), 291-8) VAP adds an additional cost of $29,000-$40,000 per patient and increases the morality rate by 40-80%. Mechanically ventilated patients are at an increased risk in developing VAP due to factors such as circumvention of body’s own natural defense mechanisms in the upper respiratory tract (the filtering and protective properties of nasal mucosa and cilia), dry open mouth, and aspiration of oral secretions, altered consciousness, immobility, and possible immunosuppression. Furthermore, the accumulation of plaque in the oral cavity creates a biofilm that allows the patient’s mouth to become colonized with bacteria.
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“Whoa-oa-oa! I feel good, I knew that I would now. I feel good….”. My “I feel good” ringtone woke me up from the depths of slumber during my first night call in internal medicine rotation. My supervising intern instructed me to come to the 4th floor for a patient in distress. Within moments, I scuttled through the hospital hallways and on to the stairs finally arriving short of breath at the nurses’ station. Mr. “Smith”, a 60 year old male with a past medical history of COPD was in respiratory distress. He had been bed bound for the past week due to his severe arthritis and had undergone a right knee replacement surgery the day before. During evening rounds earlier, he had no signs of distress. However, now at 2 AM in the morning, only hours later since rounds, he was minimally responsive. My intern and I quickly obtained the patient’s ABG measurements and subsequently initiated a trial of BIPAP. This resolved Mr. Smith’s respiratory distress and abnormal ABG values. To rule out serious causes of dyspnea, a stat chest x-ray and CT were obtained. Thankfully, both studies came back normal.
Ascertaining the adequacy of gaseous exchange is the major purpose of the respiratory assessment. The components of respiratory assessment comprises of rate, rhythm, quality of breathing, degree of effort, cough, skin colour, deformities and mental status (Moore, 2007). RR is a primary indicator among other components that assists health professionals to record the baseline findings of current ventilatory functions and to identify physiological respiratory deterioration. For instance, increased RR (tachypnoea) and tidal volume indicate the body’s attempt to correct hypoxaemia and hypercapnia (Cretikos, Bellomo, Hillman, Chen, Finfer, & Flabouris, 2008). The inclusive use of a respiratory assessment on a patient could lead to numerous potential benefits. Firstly, initial findings of respiratory assessment reveals baseline data of patient’s respiratory functions. Secondly, if the patient is on respiratory medication such as salbutamol and ipratropium bromide, the respiratory assessment enables nurses to measure the effectiveness of medications and patient’s compliance towards those medications (Cretikos, Bellomo, Hillman, Chen, Finfer, & Flabouris, 2008). Thirdly, it facilitates early identification of respiratory complications and it has the potential to reduce the risk of significant clinical