Question

1) what is the advantages, disadvantages and what type of patient use PRVC

2) what is noninvasive and the advantages, disadvantages and the type of patient Nonnvasive Ventilator

Answer 1

1) PRVC

PRVC is Pressure controlled ventilation with a volume control. These have the advantage of both pressure controlled and volume controlled.

Advantages

▪ pressure automatically get adjusted for changes.

▪ decelarate or reduce the inspiratory flow rate, which helps in improvwd gas exchange.

▪ each breath is analysed.

▪ limits volutrauma and prevent hypoventilation.

▪ guaranteed tidal volume with minimal peak inspiratory pressure.

▪ decrease work of breathing.

▪ minimize the risk of barotrauma due to increased pressure.

Disadvanatges

▪pressure delivery is depend on previous tidal volume

▪ not suitable for asthma and copd patients.

▪ may worson positive end expiratory pressure.

▪ when patient demand or respiratory rate increases , ventilatory support decreases.

▪ poorly tolerated on awake or non sedative patients

PRVC is applicable in:

▪ patientswho needs less pressure and consistent tidal volume.

▪ patients with chances of changing workload of breathing ,CL or raw.

▪ acute lung injuary and acute respiratory distress syndrome

▪ patient requiring high or variable minute volume.

▪ patient who cannot spontaneously breath.

2) non invasive ventilation refers to the mechanical ventilation to lungs without artificial invasive airway.

Advantages

▪Decrease the workload of breathing

▪avoid intubation complication

▪ affordable cost

▪ minimal sedation requirement ( if needed)

▪ prevention of airway collapse

▪ better tolerated

Disadvantages

▪Patient feels discomfort with mask

▪increased aspiration risk

▪ facial skin necrosis and eye irritation

▪ slower correction of gas exchange

▪ suctioning of secretions

Indication

▪Acute pulmonary edema

▪Pneumonia

▪COPD

▪Asthma

▪respiratory failure

▪Obstructive sleep apnea

▪Motor neuron disorder