An observational study in Lipodystrophy and Obesity, sponsored by Alaa Hassan M. Elhawary. Completed at 1 site in Egypt. Open to female participants aged 25 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-10-01.
Sponsored by Alaa Hassan M. Elhawary · Observational
What is Impact of Amount Versus Surface Area of Liposuction on Haematological Parameters, Coagulopathy Profile and Electrolyte Balance? Liposuction involves the creation of extensive subsurface trauma, comparable in many respects to the massive injury of an internal burn. Liposuction commences with cannula aspiration of several liters of fluid-engorged adipose tissue, during which small feeder vessels are inevitably torn.
Operating on multiple areas increases the area of injury regardless of whether just small amounts of fat are removed. Because many of the complications associated with large volume liposuction are related to fluid shifts and fluid balance, classifying the procedure based on the total volume removed from the patient, including fat, wetting solution, and blood, makes more sense to evaluate the damage made by the procedure.
Safety and aesthetic issues define large-volume liposuction as having a 5,000-ml aspirate, mega-volume liposuction as having an 8,000-ml aspirate, and giganto-volume liposuction as having an aspirate of 12,000 ml or more.
Liposuction is fat- removing aesthetic surgery procedure that aims to body contouring. Liposuction is the most frequently performed aesthetic surgery procedure in Western Countries. This technique has had rapid development since the 1970s, when it was experimented for the first time by A. and G. Fischer. It is currently widely used in clinical practice for many different situations in aesthetic, reconstructive and functional fields.
At 1970s, fat removal was carried out with a blunt curette. This technique was modified in 1977 by a French surgeon, Yves Gerard Illouz, who added hyaluronidase and saline to emulsify the fatty tissue, and hence facilitate aspiration with the use of liposuction cannula. This was termed the 'wet technique' and was introduced to reduce blood loss during the procedure.
The current options for wetting solutions are dry, wet, superwet, and tumescent. The dry technique employs no wetting solution and has few indications in liposuction. The wet technique involves instillation of 200 to 300 mL of solution per area to be treated, regardless of the amount aspirated. The superwet technique employs an infiltration of 1 mL per estimated mL of expected aspirate, and this is the technique practiced at our institution. Tumescent infiltration, popularized by Klein, involves infiltration of wetting solution that creates significant tissue turgor and results in infiltration of 3 to 4 mL of wetting solution per mL aspirated. Regardless of technique, the infiltrate should be allowed to take effect for seven minutes prior to suctioning.
Most studies consider the most important parameter, to determine the safety of liposuction, is the amount (volume) of aspirated fluid. A review of the scientific literature shows that there are no scientific data available to support a specific volume maximum at which point liposuction is no longer safe, although the risk of complications is unavoidably higher as the volume of aspirate and the number of anatomic sites treated increase.
Safety and aesthetic issues define large-volume liposuction as having a 5,000-ml aspirate, mega-volume liposuction as having an 8,000-ml aspirate, and giganto-volume liposuction as having an aspirate of 12,000 ml or more.
In large volume liposuction, there is potential for large fluid shifts secondary to the volume of tissue removed, with a risk of developing pulmonary edema, high-volume liposuction is significantly more prone to complications than the original form of liposuction.
There is a long history of debate over the safe volume of fat tissue that can be removed by liposuction. Current ASPS guidelines define 5,000 milliliters (five liters) as "large-volume liposuction" potentially associated with a higher risk of complications. But the guidelines acknowledge there is no scientific data to support an absolute cutoff point. Patients with complications had larger liposuction volumes-average 3.4 liters-and higher BMIs. Patients undergoing "large-volume" liposuction of more than five liters had a higher overall complication rate: 3.7 versus 1.1 percent.
On the other hand, liposuction involves the creation of extensive subsurface trauma, comparable in many respects to the massive injury of an internal burn. Liposuction commences with cannula aspiration of several liters of fluid-engorged adipose tissue, during which small feeder vessels are inevitably torn.
Only few studies have mentioned the effect of surface area on liposuction and none of those studies have been published at certified impacted magazine.
In this study considers the amount of liposuction is a constant factor (Large volume liposuction) and the surface area is the variant to detect the changes in hemogram, coagulation profile and electrolyte imbalance that may lead to possible complication.
139 studies on the registry are indexed under Lipodystrophy; 10 are open to participants now.
This study's enrollment of 20 is below the median of 104 across 34 observational studies indexed under Lipodystrophy.
Browse Lipodystrophy studies →This is the only study on the registry with Alaa Hassan M. Elhawary as lead sponsor.
Counted across the registry records on this site, refreshed daily.
To assess the impact of amount, up to 8 litres, versus surface area of liposuction on haematological parameters, coagulopathy profile and electrolyte balance.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
liposuction procedure and observation of the hematological changes on the patients
Comparing the blood hemoglobin level pre, intra and post operative between two groups of patients, both have done large volume liposuction, with different surface areas liposuctioned.
To compare the impact of large volume liposuction (5 to 8 liters) from different body surface areas on the patient's hemoglobin level preoperatively, intraoperative and postoperatively. The surface area will be calculated according to Lund and Browder chart by percentage (the most accurate and widely used chart to calculate total body surface area affected by a burn injury) The volume is measured by Liters. Hemoglobin level is measured by g/dl.
Time frame: 1 year
Comparing the coagulation profile (mainly prothrombin concentration and INR) pre, intra and post operative between two groups of patients, both have done large volume liposuction, with different surface areas liposuctioned.
To compare the impact of large volume liposuction (5 to 8 liters) from different body surface areas on the patient's Coagulopathy Profile (prothrombin concentration, INR) preoperatively, intraoperative and postoperatively. The surface area will be calculated according to Lund and Browder chart by percentage (the most accurate and widely used chart to calculate total body surface area affected by a burn injury) The volume is measured by Liters. The coagulation profile includes mainly prothromin concentration( measured by percentage) and INR.
Time frame: 1 year
Comparing potassium serum ions level pre, intra and post operative between two groups of patients, both have done large volume liposuction, with different surface areas liposuctioned.
To compare the impact of large volume liposuction (5 to 8 liters) from different body surface areas on the patient's electrolyte balance preoperatively, intraoperative and postoperatively. The surface area will be calculated according to Lund and Browder chart by percentage (the most accurate and widely used chart to calculate total body surface area affected by a burn injury) The volume is measured by Liters. The electrolyte, that are included in the study, is potassium ions measured by mmol/L.
Time frame: 1 year
Comparing the blood hematocrit level pre, intra and post operative between two groups of patients, both have done large volume liposuction, with different surface areas liposuctioned.
To compare the impact of large volume liposuction (5 to 8 liters) from different body surface areas on the patient's hemoglobin level preoperatively, intraoperative and postoperatively. The surface area will be calculated according to Lund and Browder chart by percentage (the most accurate and widely used chart to calculate total body surface area affected by a burn injury) The volume is measured by Liters. Hematocrit level is measured by percentage.
Time frame: 1 year.
Comparing the sodium serum ions level pre, intra and post operative between two groups of patients, both have done large volume liposuction, with different surface areas liposuctioned.
To compare the impact of large volume liposuction (5 to 8 liters) from different body surface areas on the patient's electrolyte balance preoperatively, intraoperative and postoperatively. The surface area will be calculated according to Lund and Browder chart by percentage (the most accurate and widely used chart to calculate total body surface area affected by a burn injury) The volume is measured by Liters. The electrolyte, that are included in the study, is sodium ions measured by mmol/L.
Time frame: 1 year.
Plan to share: No
No publications or documents are linked to this record.
Ran from Nov 2020 to primary completion in Dec 2023, 37 months.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Feb 2024. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.