The Midwest Surgical Association
Amyotrophic lateral sclerosis: the Midwestern surgical experience with the diaphragm pacing stimulation system shows that general anesthesia can be safely performed

https://doi.org/10.1016/j.amjsurg.2008.11.008Get rights and content

Abstract

Background

There is a paucity of literature concerning general anesthesia and surgery in patients with amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease). This report summarizes the largest series of surgical cases in ALS during multicenter prospective trials of the laparoscopic diaphragm pacing system (DPS) to delay respiratory failure.

Method

The overall strategy outlined includes the use of rapidly reversible short-acting analgesic and amnestic agents with no neuromuscular relaxants.

Results

Fifty-one patients were implanted from March 2005 to March 2008 at 2 sites. Age at implantation ranged from 42 to 73 years and the percent predicted forced vital capacity (FVC) ranged from 20% to 87%. On preoperative blood gases, Pco2 was as high as 60. Using this protocol, there were no failures to extubate or 30-day mortalities. The DPS system increases the respiratory system compliance by decreasing posterior lobe atelectasis and can stimulate respirations at the end of each case.

Conclusions

Laparoscopic surgery with general anesthesia can be safely performed in patients with ALS undergoing DPS.

Section snippets

Patients and Methods

This is a prospective evaluation of all ALS patients implanted with the DPS system from March 2005 until March 2008 at University Hospitals Case Medical Center (UHCMC), Cleveland, OH, and Henry Ford Health System (HFHS), Detroit, MI. This was undertaken under FDA Investigational Device Exemption (IDE) G040142 and both sites institutional review boards (IRBs) approved the investigations. The study was registered at http://www.clinicaltrials.gov with the specific identifier NCT00420719. The

Results

For the initial pilot trial, 16 patients were implanted at UHCMC from March 2005 to March 2007 with an average age of 50 years (range 32 to 70 years); 13 of the patients were males. The average predicted FVC at surgery was 56% (range 45% to 89%) with 5 patients having values below 50%. Two patients had hypercarbia before implantation. Six patients underwent simultaneous gastrostomy tube placements. The average time for the operation was 98 minutes (range 60 to 134 minutes).

In September 2007, 2

Comments

This is the largest reported series of ALS patients undergoing general anesthesia safely for a laparoscopic procedure. General anesthesia consisting of remifentanil, sevoflurane, and propofol was effective in facilitating neuromuscular evaluation and laparoscopic surgery in ALS patients without adverse perioperative effects. This strategy may be useful and facilitate other surgery on patients with ALS. The limiting factor in concluding that all surgery in ALS patients can be done safely is that

References (15)

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Dr. Onders, University Hospitals of Cleveland, and Case Western Reserve University School of Medicine have intellectual property rights involved with the diaphragm pacing system and equity in Synapse Biomedical who manufactures the device.

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