P189 Delays in doctor-led arterial blood gases may impact timely implementation and optimisation of acute non-invasive ventilation (NIV)

Background Non-invasive ventilation (NIV) has become an integral tool in the management of acute and chronic respiratory failure. Studies have shown that use of NIV decreases the length of hospital stay, improves symptoms and also reduces the need for invasive mechanical ventilation in patients with respiratory failure. However, NIV is not used sufficiently in our country. Objective To find out the outcome of Non Invasive Ventilation in Respiratory failure in Nepal. Methods Retrospective analysis of data of 28 patients in between June 2010- November 2010 was done. All the patients selected had respiratory failure. Records were analysed for documentation of clinical diagnosis. Arterial blood gases were assessed prior to, after starting and after discontinuation of NIV. The outcome of NIV and the need for domiciliary oxygen was evaluated at discharge. Results Thirty four patients received NIV out of which 6 were excluded from the study due to insufficient documentation. Out of these 28 patients, 27 received bi-level and one patient received Continuous Positive Airway Pressure. Mean age of patients was 66.5 years and ranged from 42-87 years. Majority (19, 79%) were from age group 60-80 years. Most common cause for the use of bi-level ventilation was chronic obstructive pulmonary disease with type 2 respiratory failure in 19 patients (67.8%). Others included obesity hypoventilation syndrome two, acute interstitial pneumonia two, cardiogenic pulmonary oedema two, Interstitial lung disease one, bronchogenic carcinoma one, and bronchiectasis one. Arterial blood gas analysis was done on admission and 12 hours or earlier after the onset of bi-level ventilation. At the time of admission, 89.3% of the patients had type 2 respiratory failure, of which 60.6% had respiratory acidosis and 67.9% of patients had pCO2 above 60 mm Hg. Arterial blood pH prior to admission ranged from 7.19 to 7.50. Twelve hours after bi-level ventilation, only 21.3% had pH <7.35 and 42.8% had pCO2 above 60 mm Hg. Non invasive ventilation was successful in 27 patients (96.4%). All patients were advised domiciliary oxygen and all patients had respiratory follow up arranged. Conclusions COPD patients with type 2 respiratory failure were seen to benefit most with NIV. It is a very cost effective and safe method of treatment and should be used first in patients with COPD with type 2 respiratory failure.DOI: http://dx.doi.org/10.3126/kumj.v9i4.6340 Kathmandu Univ Med J 2011;9(4):256-59

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Disorders of the thoracic cage and diaphragm

Oxford Textbook of Medicine ◽

10.1093/med/9780198746690.003.0437 ◽

2020 ◽

pp. 4328-4337

Author(s):

John M. Shneerson ◽

Michael I. Polkey

Keyword(s):

Respiratory Failure ◽

Blood Gases ◽

Face Mask ◽

Pleural Thickening ◽

Non Invasive ◽

Arterial Blood ◽

Non Invasive Ventilation ◽

Tuberculous Osteomyelitis ◽

Cricoarytenoid Arthritis

Disorders of the thoracic skeleton can lead to a severe restrictive ventilatory defect, the risk of respiratory failure being highest with (1) scoliosis—particularly if the following characteristics are present: early onset, severe angulation, high in the thorax, respiratory muscle weakness, low vital capacity; (2) kyphosis—but only if of very sharp angulation (gibbus), most commonly seen following tuberculous osteomyelitis; and (3) after thoracoplasty—historically performed as treatment for pulmonary tuberculosis. While not a disorder of the skeleton, a similar pathophysiological pattern is seen in extreme obesity, and this is the fastest growing cause of referral to home ventilation centres. Arterial blood gases and quality of life can both be readily improved with non-invasive ventilation, usually using a nasal or face mask. Survival in most skeletal disorders after starting ventilation leads to apical bullae, pleural thickening/effusions, and cricoarytenoid arthritis, but rarely causes respiratory failure in the absence of other comorbidities.

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Noninvasive Bi-Level Positive Airway Pressure Ventilation in Blunt Chest Trauma

Journal of Advances in Medicine and Medical Research ◽

10.9734/jammr/2021/v33i2231154 ◽

2021 ◽

pp. 8-15

Author(s):

Mai Mohammed Mahran ◽

Rehab Said El-Kalla ◽

Ayman Abd El Khalek Sallam ◽

Mohamed Ahmed El Heniedy ◽

Hala Mohey El- deen EL- Gendy

Keyword(s):

Mechanical Ventilation ◽

Chest Trauma ◽

Chest Injury ◽

Invasive Ventilation ◽

Non Invasive ◽

Arterial Blood ◽

Group I ◽

Non Invasive Ventilation ◽

Group Ii ◽

Duration Of Ventilation

Background: Chest injury was found to cause death in 20%–25% of multiple trauma patients. Thoracic trauma is, therefore, important in the overall management of multiple injury patients and may require a longer stay in the Intensive Care Unit (ICU) and use of mechanical ventilation. Methods: This prospective randomized clinical study was in Emergency Intensive Care, Tanta University Hospitals. For, 88 adult patients with blunt chest injury. Patients were enrolled in this study aged ≥18 years old classified into two equal groups: Group I (Non-Invasive Mechanical Ventilation group) = 44 patient: Patients in this group received BIPAP. Group II (Control group=44 patient: Patients in this group have received high flow O2 by mask O2 without use of non-invasive mechanical ventilation. Data of collection were: the demographic data, Frequent arterial blood gas analysis of all patients every 6 hrs. Respiratory rate, Arterial blood pressure, Heart rate were recorded: every 6 h. All Patients receive analgesia. Evaluate outcome: a-Primary outcome. Tracheal intubation, duration of ventilation. b-Secondary outcome. Mortality, ICU length stay. And Chest Trauma Scoring System. Results: Ten patients (22%) were intubated and mechanically ventilated in group I (BiPAP). with mean value of duration of ventilation 34.4 hrs. But at group II 16 patients (36%) were intubated and mechanically ventilated with mean value of duration of ventilation 34.12 hrs. ICU stay at group I (BiPAP) was statistically decrease of number of days when compared to group II (control). 6 days at group I and 12 days at group II. In this study no case of mortality was recorded with non-invasive ventilation, although three mortality cases were recorded with the control group. Conclusion: This study recommends the pre-emptive use of Non-Invasive Ventilation in the treatment for blunt chest injury in patients at risk for respiratory failure. Success of Non-Invasive Ventilation depends on improvement of hypercarbia and hypoxemia in patients impending respiratory failure due to reversible cause as blunt chest trauma with the expectation of a good outcome and avoidance of intubation.

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Outcome of Non-Invasive Ventilation in Patients of Acute Respiratory Failure.

Nepal Medical Journal ◽

10.37080/nmj.119 ◽

2021 ◽

Vol 4 (1) ◽

pp. 21-26

Author(s):

Anusmriti Pal ◽

Manoj Kumar Yadav ◽

Chiranjeevi Pant

Keyword(s):

Intensive Care Unit ◽

Respiratory Failure ◽

Acute Respiratory Failure ◽

Face Mask ◽

Invasive Ventilation ◽

Failure Group ◽

Non Invasive ◽

Arterial Blood ◽

Copd Patients ◽

Non Invasive Ventilation

Introduction: Non-invasive ventilation (NIV) is a method of ventilator support or delivery of positive pressure into the lungs usually through a face mask, mostly initiated before severe acidosis occurs. NIV failure requiring invasive mechanical ventilation in decompensated chronic obstructive pulmonary disease (COPD) patients is low, but, in critical patients, it is as high as 60%. Acute respiratory failure (ARF) is the common reason for admission to the intensive care unit. This study assesses the outcome of NIV among patients with acute respiratory failure, the duration of use, stay in ICU, and failure rate of NIV. Such type of study result is scarce in our country. Methods: Arterial blood gases were assessed prior, after, and at discontinuation of NIV. NIV was delivered by ventilator via face mask. All patients above age 15 years who presented to the hospital, diagnosed to have ARF by ABG were included and admitted to Medical Intensive Care Unit (MICU). . Appropriate statistical tests (Chi-square) were performed and the statistical significance of the results was assessed. Results: 35 patients with the median age of 73 years (range: 39- 89 years), of 60.0 % females among which 74.3 % were current smokers. Arterial blood pH prior to admission ranged from 7.11-7.39 and 7.06-7.41 among NIV success and failure, respectively. Similarly, PCo2 ranged from 54.0-127.5 and 29.5-105.9 among them, respectively. Two hours after ventilation pH ranged from 7.12-7.43 and 7.05-7.30 respectively in the success and failure group. The most common disease condition requiring NIV was 77.1% COPD. Out of NIV failure group (n=19) ,57.8 % were intubated and 42.1% patients left the intervention. Conclusions: Usage of NIV among ARF patients was associated with lower intubation and ICU mortality rate. COPD patients showed the most benefit with NIV, whereas patients suffering from interstitial lung disease, lung cancer had less benefit.

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