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The Effect of Preoperative Weight Loss before Gastric Bypass: A Systematic Review.

Kadeli DK, Sczepaniak JP, Kumar K, Youssef C, Mahdavi A, Owens M - J Obes (2012)

Bottom Line: Results.Six studies supported our hypothesis, five were inconclusive, and no study refuted.Conclusions.

View Article: PubMed Central - PubMed

Affiliation: John Sczepaniak Medical Enterprises, 6871 Eberhart Street, San Diego, CA 92115, USA.

ABSTRACT
Background. Many insurance companies require obese patients to lose weight prior to gastric bypass. From a previous study by the same authors, preoperative weight at surgery is strongly predictive of weight loss up to one year after surgery. This review aims to determine whether preoperative weight loss is also correlated with weight loss up to one year after surgery. Methods. Of the 186 results screened using PubMed, 12 studies were identified. A meta-analysis was performed to further classify studies (A class, B class, regression, and rejected). Results. Of all 12 studies, one met the criteria for A class, six were B class, four were regression, and one was rejected. Six studies supported our hypothesis, five were inconclusive, and no study refuted. Conclusions. Preoperative weight loss is additive to postsurgery weight loss as predicted from the weight at the time of surgery.

No MeSH data available.


Related in: MedlinePlus

Flow chart depicting the classification of the selected studies into Class A, B, and regression studies. WL: weight loss; WG: weight gain.
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Related In: Results  -  Collection


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fig5: Flow chart depicting the classification of the selected studies into Class A, B, and regression studies. WL: weight loss; WG: weight gain.

Mentions: The preoperative weight loss is considered to be a continuous variable and can be plotted on the x-axis (Figure 4). The outcome is also a continuous variable percent of initial weight loss, plotted on y-axis (Figure 5) for a period of one year after surgery. For explanation and standardization, we use percent of initial weight at surgery as the outcome for y-axis.


The Effect of Preoperative Weight Loss before Gastric Bypass: A Systematic Review.

Kadeli DK, Sczepaniak JP, Kumar K, Youssef C, Mahdavi A, Owens M - J Obes (2012)

Flow chart depicting the classification of the selected studies into Class A, B, and regression studies. WL: weight loss; WG: weight gain.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3376766&req=5

fig5: Flow chart depicting the classification of the selected studies into Class A, B, and regression studies. WL: weight loss; WG: weight gain.
Mentions: The preoperative weight loss is considered to be a continuous variable and can be plotted on the x-axis (Figure 4). The outcome is also a continuous variable percent of initial weight loss, plotted on y-axis (Figure 5) for a period of one year after surgery. For explanation and standardization, we use percent of initial weight at surgery as the outcome for y-axis.

Bottom Line: Results.Six studies supported our hypothesis, five were inconclusive, and no study refuted.Conclusions.

View Article: PubMed Central - PubMed

Affiliation: John Sczepaniak Medical Enterprises, 6871 Eberhart Street, San Diego, CA 92115, USA.

ABSTRACT
Background. Many insurance companies require obese patients to lose weight prior to gastric bypass. From a previous study by the same authors, preoperative weight at surgery is strongly predictive of weight loss up to one year after surgery. This review aims to determine whether preoperative weight loss is also correlated with weight loss up to one year after surgery. Methods. Of the 186 results screened using PubMed, 12 studies were identified. A meta-analysis was performed to further classify studies (A class, B class, regression, and rejected). Results. Of all 12 studies, one met the criteria for A class, six were B class, four were regression, and one was rejected. Six studies supported our hypothesis, five were inconclusive, and no study refuted. Conclusions. Preoperative weight loss is additive to postsurgery weight loss as predicted from the weight at the time of surgery.

No MeSH data available.


Related in: MedlinePlus