Perioperative Evaluation of Respiratory Muscle Strength after Scoliosis Correction in Patients with Duchenne Muscular Dystrophy

<sec><title>Study Design</title>Retrospective cohort study.</sec><sec><title>Purpose</title>To investigate the effect of spinal correction on respiratory muscle strength in patients with Duchenne muscular dystrophy (DMD).</sec><sec><title>Overview of Literature</title>Several studies have reported that scoliosis correction in patients with DMD does not improve pulmonary function. In these studies, pulmonary function was evaluated using the traditional spirometric values of percent vital capacity (%VC) and percent forced vital capacity (%FVC). However, traditional spirometry may not be suitable for patients with DMD because the results can be influenced by patient fatigue or level of understanding. Therefore, we evaluated respiratory function focusing on respiratory muscle strength using maximal inspiratory pressure (MIP), maximal expiratory pressure (MEP), and sniff nasal inspiratory pressure (SNIP), in addition to %VC and %FVC.</sec><sec><title>Methods</title>We retrospectively reviewed 16 patients with DMD who underwent spinal correction surgery between 2006 and 2011 at Kitasato University Hospital. All patients were males, and the mean age was 13.5 years. Respiratory muscle strength was evaluated using MIP, MEP, and SNIP. Measurements were obtained preoperatively and at 1 and 6 months postoperatively, and %VC and %FVC were obtained preoperatively and within 6 months postoperatively.</sec><sec><title>Results</title>The mean preoperative and postoperative %VC values were 54.0% and 51.7%, whereas the mean %FVC values were 53.9% and 53.2%, respectively. The mean MIP, MEP, and SNIP values obtained preoperatively and at 1 and 6 months postoperatively were as follows: MIP, 40.5, 42.7 and 47.2 cm H2O; MEP, 26.0, 28.0, and 29.0 cm H2O; and SNIP, 33.4, 33.0, and 33.0 cm H2O; respectively. The mean MIP and MEP values significantly improved postoperatively. There were no significant differences in SNIP, %VC, or %FVC preand postoperatively.</sec><sec><title>Conclusions</title>By focusing on respiratory muscle strength, our results suggest that scoliosis correction in patients with DMD might have a favorable effect on respiratory function.</sec>

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Respiratory Muscle Strength and Cough Capacity in Patients with Duchenne Muscular Dystrophy

Yonsei Medical Journal ◽

10.3349/ymj.2006.47.2.184 ◽

2006 ◽

Vol 47 (2) ◽

pp. 184 ◽

Cited By ~ 36

Author(s):

Seong-Woong Kang ◽

Yeoun-Seung Kang ◽

Hong-Seok Sohn ◽

Jung-Hyun Park ◽

Jae-Ho Moon

Keyword(s):

Duchenne Muscular Dystrophy ◽

Muscular Dystrophy ◽

Muscle Strength ◽

Respiratory Muscle ◽

Respiratory Muscle Strength

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Effect of Long-term Steroids on Cough Efficiency and Respiratory Muscle Strength in Patients With Duchenne Muscular Dystrophy

PEDIATRICS ◽

10.1542/peds.2006-1400 ◽

2007 ◽

Vol 119 (2) ◽

pp. e320-e324 ◽

Cited By ~ 51

Author(s):

A. S. Daftary ◽

M. Crisanti ◽

M. Kalra ◽

B. Wong ◽

R. Amin

Keyword(s):

Duchenne Muscular Dystrophy ◽

Muscular Dystrophy ◽

Muscle Strength ◽

Respiratory Muscle ◽

Respiratory Muscle Strength

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Effects of transcutaneous electrical nerve stimulation on pain, pulmonary function, and respiratory muscle strength in the postoperative period of thoracic surgery in an intensive care unit

Journal of Critical Care ◽

10.1016/j.jcrc.2017.09.141 ◽

2017 ◽

Vol 42 ◽

pp. 414

Author(s):

Hermann Heinrich Husch ◽

Pauline Lopes Carvalho ◽

Camila da Cunha Niedermeyer ◽

Adriana Kessler ◽

Graciele Sbruzzi

Keyword(s):

Intensive Care Unit ◽

Intensive Care ◽

Muscle Strength ◽

Thoracic Surgery ◽

Pulmonary Function ◽

Postoperative Period ◽

Transcutaneous Electrical Nerve Stimulation ◽

Respiratory Muscle ◽

Respiratory Muscle Strength ◽

Electrical Nerve Stimulation

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Monitoring respiratory muscle strength assists in early diagnosis of respiratory dysfunction as opposed to the isolated use of pulmonary function evaluation in amyotrophic lateral sclerosis

Arquivos de Neuro-Psiquiatria ◽

10.1590/s0004-282x2013000300004 ◽

2013 ◽

Vol 71 (3) ◽

pp. 146-152 ◽

Cited By ~ 6

Author(s):

Guilherme Fregonezi ◽

Palomma Russelly Saldanha Araújo ◽

Tathiana Lindemberg Ferreira Macêdo ◽

Mario Emilio Dourado Junior ◽

Vanessa Regiane Resqueti ◽

...

Keyword(s):

Amyotrophic Lateral Sclerosis ◽

Muscle Strength ◽

Early Diagnosis ◽

Pulmonary Function ◽

Healthy Subjects ◽

Respiratory Muscle ◽

Function Evaluation ◽

Respiratory Muscle Strength ◽

Respiratory Dysfunction ◽

Lateral Sclerosis

ObjectiveIt was study the relationship between respiratory muscle strength and forced vital capacity (FVC) in patients with amyotrophic lateral sclerosis (ALS) versus healthy subjects.MethodsPulmonary function and respiratory muscle strength [maximal inspiratory (PImax), maximal expiratory (PEmax) and sniff nasal inspiratory pressure (SNIP)] were assessed in patients with ALS and healthy subjects, matched using cutoffs established in the literature for impaired pulmonary function and respiratory muscle weakness.ResultsTwenty-eight ALS patients and 28 healthy subjects were studied. We found sensitivity and specificity for PImax, PEmax and SNIP of 75/58%, 81/67% and 75/67%. The Receiver Operating Characteristic curve (ROC curve) indicated that the variables PImax, PEmax and SNIP can identify differences in respiratory muscle strength between ALS and healthy individuals at 0.89, 0.9 and 0.82, respectively. A positive correlation was recorded between FVC (%) versus SNIP, PImax and PEmax.ConclusionIn ALS, monitoring respiratory muscle strength assists in early diagnosis of respiratory dysfunction as opposed to the isolated use of FVC.

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Influence of a Six-Week Swimming Training with Added Respiratory Dead Space on Respiratory Muscle Strength and Pulmonary Function in Recreational Swimmers

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17165743 ◽

2020 ◽

Vol 17 (16) ◽

pp. 5743 ◽

Cited By ~ 1

Author(s):

Stefan Szczepan ◽

Natalia Danek ◽

Kamil Michalik ◽

Zofia Wróblewska ◽

Krystyna Zatoń

Keyword(s):

Muscle Strength ◽

Pulmonary Function ◽

Dead Space ◽

Respiratory Muscle ◽

Moderate Intensity ◽

Respiratory Muscle Strength ◽

Swimming Training ◽

Respiratory Muscle Fatigue ◽

Front Crawl ◽

Respiratory Dead Space

The avoidance of respiratory muscle fatigue and its repercussions may play an important role in swimmers’ health and physical performance. Thus, the aim of this study was to investigate whether a six-week moderate-intensity swimming intervention with added respiratory dead space (ARDS) resulted in any differences in respiratory muscle variables and pulmonary function in recreational swimmers. A sample of 22 individuals (recreational swimmers) were divided into an experimental (E) and a control (C) group, observed for maximal oxygen uptake (VO2max). The intervention involved 50 min of front crawl swimming performed at 60% VO2max twice weekly for six weeks. Added respiratory dead space was induced via tube breathing (1000 mL) in group E during each intervention session. Respiratory muscle strength variables and pulmonary and respiratory variables were measured before and after the intervention. The training did not increase the inspiratory or expiratory muscle strength or improve spirometric parameters in any group. Only in group E, maximal tidal volume increased by 6.3% (p = 0.01). The ARDS volume of 1000 mL with the diameter of 2.5 cm applied in moderate-intensity swimming training constituted too weak a stimulus to develop respiratory muscles and lung function measured in the spirometry test.

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