+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effect of breath termination criterion on breathing patterns and the work of breathing during pressure support ventilation

The effect of breath termination criterion on breathing patterns and the work of breathing during pressure support ventilation

Anesthesia and Analgesia 92(1): 161-165

With pressure support ventilation (PSV), each PSV breath is flow-cycled, and the breath termination criterion (TC) is usually nonadjustable. When TC does not match the interaction between the patient's inspiratory-expiratory efforts to the opening and closing of the inspiratory and expiratory valves, patient-ventilator asynchrony may occur, and the work of breathing (WOB) may increase. Therefore, we studied the effect of TC on breathing patterns and WOB during PSV in eight patients with acute respiratory distress syndrome or acute lung injury. We studied five levels of TC during PSV-1%, 5%, 20%, 35%, and 45% of the peak inspiratory flow. With increasing levels of TC, the tidal volume decreased and respiratory frequency increased, along with a decrease in duty cycle. WOB markedly increased with increasing levels of TC from 0.31 +- 0.12 J/L with TC 1% to 0.51 +- 0.11 J/L with TC 45%. Premature termination with double breathing occurred in one patient with TC 35% and four patients with TC 45%. Delayed termination with a duty cycle of >0.5 occurred in two patients with TC 1%. In conclusion, the proper adjustment of TC improves patient-ventilator synchrony and decreases WOB during PSV.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 011492758

Download citation: RISBibTeXText

PMID: 11133620

DOI: 10.1097/00000539-200101000-00031

Related references

Additional views in radiographic technique. Radiography 16(189): 190-192, 1950

The effect of pressure on fluid absorption during endometrial ablation. Journal of Gynecologic Surgery 8(1): 1-10, 1992

Noninvasive breast cancer. The dilemma of the 1990s. Obstetrics and Gynecology Clinics of North America 21(4): 639-658, 1994

Effect of pressure overload on cardiac calcium antagonist binding sites of guinea pig comparison with the adaptational response of the hypertrophied rat heart. Cardiovascular Research 25(10): 875-880, 1991

Effect of different levels of lipid peroxidation on continous intravascular blood coagulation. Biomeditsinskaia Khimiia 51(4): 424-431, 2005

Polysomnography in Chronic Neuromuscular Disease. Respiration 70(4): 349-354, 2003

Comparison of work of breathing between volume support and pressure support in young lambs with and without increased resistance. Journal of Investigative Medicine 43(Suppl. 1): 74A, 1995

Work of breathing during mechanical ventilation as a function of peak inspiratory flow rate. 1985

Comparison of inotropic and chronotropic responses in rat isolated atria and ventricles. Clinical and Experimental Pharmacology and Physiology 18(11): 753-760, 1991

Use of the rapid assessment method in maternity care: A practical example. Saudi Medical Journal 17(6): 744-751, 1996

Breathing for protein function of (proton) homeostasis. Respiration Physiology 93(1): 1-12, 1993

The effects of pressure treatments with kiwi fruit protease on adult cattle semitendinosus muscle. Food Chemistry 78(2): 167-171, 2002

Breathing out into water during subtotal immersion: a therapy for chronic pulmonary emphysema. American Journal of Physical Medicine and Rehabilitation 79(2): 150-153, 2000

The effect of pressure support ventilation on auto peep in a patient with asthma. Chest 101(1): 285-286, 1992

Predictors Of Noninvasive Ventilation Failure. Chest 136(4): 32S-1, 2009