Closed suction drainage versus closed simple drainage in the management of modified radical mastectomy wounds.
mastectomy mastectomy (măstĕk`təmē), surgical removal of breast tissue, usually done as treatment for breast cancer. There are many types of mastectomy. In general, the farther the cancer has spread, the more tissue is taken. was performed for carcinoma of the breast, management of the resulting large wound has always posed problems. Of the measures employed to manage mastectomy wounds, closed suction wound drainage has been accepted as the most effective in reducing morbidity. (1,2) However, suction drains are expensive and out of reach of many surgeons in developing countries where open and closed simple drains are in common use. Whereas open drains have been shown to be inferior to both closed suction and closed simple drains, (2-4) no study has shown that suction is a necessity in mastectomy drains. A study that compared closed drains with and without suction suggested that there were no significant differences in their performance. (5)
Our aim was to compare the outcomes of modified radical mastectomy radical mastectomy
Surgical removal of the entire breast, the pectoral muscles, the lymphatic-bearing tissue in the armpit, and other neighboring tissues. Also called Halsted's operation. wounds managed by either closed suction drainage suction drainage
The closed drainage of a cavity using a suction apparatus attached to a drainage tube. or closed simple drainage. The outcomes measured were the frequency and severity of complications directly or indirectly related to fluid collection and drainage in mastectomy wounds; the overall cost of wound management by each drainage system; particular problems of each drainage system; and nursing problems.
Materials and methods
All patients scheduled to undergo modified radical mastectomy at the surgical oncology surgical oncology Oncological surgery The field of surgery dedicated to the operative ablation of neoplasia, generally, 'solid' tumors unit of the University College Hospital, Ibadan, from January 1997 to May 1998, and the University of Nigeria The University of Nigeria is in the Enugu State town of Nsukka. It was founded by Dr Benjamin Nnamdi Azikiwe, the first president of Nigeria. It is the first indigenous university in Nigeria. Teaching Hospital, Enugu, from March 1999 to July 2003, were recruited for the study. One of the authors was involved in the management of all the patients. Excluded were patients who requested a particular drain, and patients scheduled for immediate breast reconstruction. Ethical approval was obtained before the commencement of the study.
Preceding a surgical operation.
preceding an operation.
the preparation of a patient before operation. evaluation of patients noted their age, height, weight, body mass index, bra size, breast volume, side of the lesion, and dominant hand. Patients were randomised Adj. 1. randomised - set up or distributed in a deliberately random way
irregular - contrary to rule or accepted order or general practice; "irregular hiring practices" for either the suction drain or simple drain by drawing lots from a sealed bag containing equal numbers of both options. Preoperative, operative and postoperative management were identical in all patients except for the use of drains. The closed simple drain was fashioned out of a feeding tube with multiple fenestration fenestration /fen·es·tra·tion/ (fen?es-tra´shun)
1. the act of perforating or condition of being perforated.
2. of the intra-wound segment, and connected to a drainage bag. The suction drain group had Redivac wound closure apparatus No. 1800 from Zimmer Orthopedics Ltd, UK. This drain (the only version of suction drains commonly available in Nigeria) uses a non-compressible plastic bottle and creates high suction pressure in the wound. A motorised suction machine was used to recharge the suction drains each time they lost vacuum.
All the patients had a modified radical mastectomy. Axillary ax·il·lar·y
Relating to the axilla.
Located in or near the armpit.
Mentioned in: Mastectomy
of or pertaining to the armpit. clearance was done up to level III nodal area. At the end of axillary dissection, the selected drain was placed to run from the lateral side of the wound up to the axilla axilla /ax·il·la/ (ak-sil´ah) pl. axil´lae [L.] the armpit.ax´illary
n. pl. ax·il·lae
See armpit. and down to the medial side of the wound. The drain was brought out through a separate stab wound on the lateral side of the wound. All patients had a standard external wound dressing with meshed gauze over the incision site, followed by Gamgee tissue; these were held in place by a circumferential elastic bandage on the chest wall.
Drain volumes were recorded daily. These were initially read off directly from the calibrations on the bottles and bags but were replaced by the use of measuring jars about halfway through the study when we noticed that the calibrations on the simple drainage bags were consistently giving falsely high values. Drains were removed from the wounds once the volume of drainage per day was <20 ml for 2 consecutive days. Dressings were changed every 3-4 days, at which time complications were noted and appropriate treatment instituted. Seroma was aspirated as necessary until it resolved. In the case of flap necrosis, the wound was debrided and dressed as necessary. Also recorded were cases of wound infection, wound dehiscence dehiscence /de·his·cence/ (de-his´ins) a splitting open.
wound dehiscence separation of the layers of a surgical wound.
n. , arm oedema oedema
see edema. and shoulder movement. Problems related to the functioning and nursing of each drain were noted, including blockage, migration or dislodgement of the drain, need for vacuum recharge, breaks or leaks in the apparatus, as well as difficulties in the management of each drain. Stitches were removed between day 10 and 14. Patients were discharged on assessment of satisfactory recovery from surgery and followed up for at least 1 month in the outpatient clinic.
The two groups were compared using the chi-square test and Student's t-test, as appropriate. The level of significance was set at a p-value of 0.05. The analysis was done using SPSS A statistical package from SPSS, Inc., Chicago (www.spss.com) that runs on PCs, most mainframes and minis and is used extensively in marketing research. It provides over 50 statistical processes, including regression analysis, correlation and analysis of variance. [R] statistical software version 9.
A total of 50 patients was recruited into the study. Twenty-six patients had suction drainage while 24 patients had closed simple drainage. Table I shows the characteristics of patients in the 2 groups. Both groups were similar in age, weight, body mass index and breast size. The simple drain group had more patients with stage II disease while the suction drain group had more patients with stage I disease. All the patients were right-handed but the suction drain group had more patients with left-sided breast tumours while the simple drain group had more right-sided breast tumours. The differences were not significant.
The mean operating time was 123 minutes in the suction group and 128 minutes in the simple drain group. The estimated mean blood loss in the simple drain group (866 ml) was slightly higher than in the suction group (779 ml). A median of 1 unit of blood was transfused in each group (range 0-2 units). The average number of nodes palpated within the removed specimen was 10 for both groups, with a range of 2 - 30 nodes for the suction-drained group and 5 - 21 nodes for the simple drain group. The mean postoperative packed cell volume packed cell volume
the percentage of the volume of whole, unclotted blood occupied by the erythrocytes. Abbreviated PCV. A useful prognostic indicator in dehydration when the PCV rises markedly. (PCV PCV packed-cell volume.
packed-cell volume, the volume of packed red cells in milliliters per 100 ml of blood. ) was 30% in each group.
Table II shows that the suction system drained less fluid in total (813.8 ml) and less per day (mean 86.1 ml) compared with the simple drain (965.0 ml and 96.1 ml, respectively) but these differences were not significant. The average duration of drainage was shorter in the suction group, but this was not statistically significant (9.4 days v. 9.8 days). The median duration of stay of drains was 8 days in the suction group and 10 days in the simple drain group. The mean length of hospital stay and the mean time to stitch removal was the same in both groups. The mean and median number of dressing changes both with the drains in situ and after the drains had been removed were similar. Of the complications noted (Table III), the simple drain group had more haematomas (6 cases v. 4 cases) and a higher incidence of wound infection (5 cases v. 4 cases), but these differences were insignificant. Flap necrosis was the same in both groups, but 1 patient in the simple drain group needed debridement Debridement Definition
Debridement is the process of removing nonliving tissue from pressure ulcers, burns, and other wounds.
Debridement speeds the healing of pressure ulcers, burns, and other wounds. . The suction drain group had more seromas (12 cases v. 6 cases); these were repeatedly aspirated until resolution.
There was no difference in the incidence of blocked drains (4 cases v. 4 cases), but more patients in the suction drain group had dislodgement (5 cases v. 3 cases) while more patients in the simple drain group had breakages and leakages (2 cases v. 3 cases). These differences were not statistically significant. The suction drains were recharged on average 1-3 times before removal and were more difficult to empty. Overall, the suction drains needed more medical and nursing staff attention to remain effective. The cost of a suction drain was $20.00; the simple drain cost $1.25. Wound management did not differ between the two groups except for the treatment of wound complications.
Our study compared the performance of closed suction drains with that of closed simple drains in mastectomy wounds. There was no significant difference in effectiveness, complications and duration of hospital stay between the two systems; however, simple drains were less costly and easier to manage.
Management of the large wounds that follow mastectomy still presents problems to the surgeon. Suction drains have been used for years, but the problems of suction in mastectomy wounds have only recently been appreciated. Fluid accumulation under flaps has not been eradicated, and complications are now noted to be more common; these include flap necrosis, early non-functioning of drains due to obstruction, pocketing of fluids below the flap, pain, and difficulty in removing the drains. (1,6) Several alternatives and adjuncts to the use of drains have been explored, including suturing the flaps to the chest wall, (7) fibrin sealant, (8) external compression dressings (9) and intraoperative tetracycline tetracycline (tĕ'trəsī`klēn), any of a group of antibiotics produced by bacteria of the genus Streptomyces. They are effective against a wide range of Gram positive and Gram negative bacteria, interfering with protein . (10) None of these measures led to improved outcomes. More recent attempts have focused on reducing the period of drainage and eliminating other aspects of wound drainage that contribute to morbidity but not to effectiveness. High suction pressure is not superior to low pressure; hence, recent suction devices use low-pressure systems. (11,12)
Open mastectomy drains have been shown to be inferior to closed drains with or without suction, (3,4) but no study has shown closed drains without suction to be inferior to closed drains with suction in mastectomy wounds. A study comparing the two concluded that the performance of siphon siphon (sī`fən, –fŏn), tube through which a liquid is lifted over an elevation by the pressure of the atmosphere and is then emptied at a lower level. drains (drains without suction) is comparable to that of suction drains, without the associated risk of vacuum loss. (5) We found no significant difference between the two drains but showed that the simple drains were much cheaper and easier to manage. This is a considerable advantage, especially in resource-poor areas with limited staff.
Our study showed that simple drains had an insignificant but definite tendency to drain more fluid compared with suction drains. Errors introduced by our initial readings, which were made directly from the calibrations on the simple drainage bags and which were falsely high, cannot be ruled out. Most of our patients had right-sided tumours; it was therefore expected that patients in the simple drainage group would have more seromas because their mastectomies were on the same side as the dominant hand. However, the simple drain group had less seromas but more haematomas. This fact suggests that suction drainage empties the initial collection (haematoma Noun 1. haematoma - a localized swelling filled with blood
intumescence, intumescency - swelling up with blood or other fluids (as with congestion) ) better but creates a false impression of complete drainage, and a consequent tendency to remove drains prematurely. The higher incidence of seromas, on the other hand, suggests that drainage was more complete in the group where simple drains stayed slightly longer in the wounds. In addition, the faster adhesion of the flaps on the chest wall with suction drains might have led to pocketing of fluid under the flaps and hence the increased incidence of seromas. (3)
We experienced no difference in the incidence of tube blockage, which was contrary to a study where the simple drain had a lower incidence of tube blockage. (5) This may be related to the type of materials used for simple drains. The suction drains needed more medical and nursing staff time. On average, the system needed to be recharged 1- 3 times before each drain was removed. This is a significant problem if suction has to be recreated by a motorised system. More modern versions of suction drains (such as the Haemovac, Jackson-Pratt and Surgivac drains) use compressible com·press·i·ble
That can be compressed: compressible packing materials; a compressible box.
com·press bottles to create suction (without the need for motorised suction), which is easier to manage. However, some of them are more expensive (US$15-40) compared with the model we used. (13)
The only significant difference between the two groups was cost and ease of management. Suction drains cost almost 15 times more than simple drains. In terms of complications, one needs to consider the cost of treating haematomas and wound infections with seromas. Since there is no significant difference in the incidence of complications, a difference in the management of complications is not expected. We controlled intraoperative variables by reporting patients managed by only 1 surgeon. This made our study population small and might have 'underpowered' the study in the detection of small differences that occurred in some parameters, such as seroma and haematoma.
We thank the physiotherapy departments at UCH UCH Universidad de Chile
UCH University College Hospital
UCH Ubiquitin C-Terminal Hydrolase
UCH University Community Health
UCH University of California, Hastings College of the Law
UCH Underground Coffee House (Hartford, CT) Ibadan and UNTH Enugu for allowing us use of their goniometer goniometer /go·ni·om·e·ter/ (go?ne-om´e-ter)
1. an instrument for measuring angles.
2. a plank that can be tilted at one end to any height, used in testing for labyrinthine disease. in this study.
Accepted 8 January 2008.
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(10.) Rice DC, Morris SM, Sarr MG, et al. Intraoperative topical tetracycline sclerotherapy sclerotherapy /scle·ro·ther·a·py/ (skler?o-ther´ah-pe) injection of a chemical irritant into a vein to produce inflammation and eventual fibrosis and obliteration of the lumen, as for treatment of hemorrhoids. following mastectomy: a prospective randomized trial. J Surg Oncol 2000; 73: 224-227.
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(12.) Chintamani, Singhal V, Singh JP, Bansal A, Saxena S. Half versus full suction drainage after modified radical mastectomy for breast cancer--a prospective randomized clinical trial randomized clinical trial,
n a clinical study where volunteer participants with comparable characteristics are randomly assigned to different test groups to compare the efficacy of therapies. . BMC (BMC Software, Inc., Houston, TX, www.bmc.com) A leading supplier of software that supports and improves the availability, performance, and recovery of applications in complex computing environments. Cancer 2005; 5: 11-16.
(13.) Buyers guide. Contract HCNS HCNS Health Corporate Network Supply 102405 for the supply of wound drainage systems. Perth: Department of Health, Government of Western Australia. http://www. healthcorporatenetwork.health.wa.gov.au/supply/contract_search.cfm (accessed 7 January 2008).
Department of Surgery, University of Nigeria Teaching Hospital, Enugu, Nigeria
E R Ezeome, MB BS, MA, FWACS FWACS Fellow of the West African College of Surgeons
Division of Oncology, Department of Surgery, University College Hospital, Ibadan, Nigeria
C A Adebamowo, MB BS, ScD, FWACS
Corresponding author: E R Ezeome (firstname.lastname@example.org)
Table I. Demographic characteristics of the study population Variable Suction drain Simple drain No. of patients 26 24 Mean age 46.0 [+ or -] 10.4 45.1 [+ or -] 7.6 Median age (years) 44.5 45 Age range (years) 30-72 27-61 Mean BMI 25.7 [+ or -] 4.7 24.8 [+ or -] 4.0 Stage of disease I 7 1 * II 4 11 III 10 9 IV 5 3 Breast volume A 4 3 B 8 7 C 4 4 D 7 7 DD 3 3 Involved side Left 18 13 Right 8 11 Mean pre-op PCV 35.5 [+ or -] 3.5 34.5 [+ or -] 3.7 Significant difference (p=0.041). Table II. Postoperative indices Parameter Suction drain Simple drain Mean hospital stay (days) 14.6 [+ or -] 2.2 14.0 [+ or -] 4.1 Mean time of stitch 12.5 [+ or -] 1.9 12.5 [+ or -] 1.9 removal (days) Mean number of wound 3.2 [+ or -] 1.2 2.8 [+ or -] 1.0 dressings Median duration of 8 10 drainage (days) Average duration of 9.4 [+ or -] 3.6 9.8 [+ or -] 4.0 drainage (days) Mean total volume of 813.8 [+ or -] 419.3 965.0 [+ or -] 597.4 fluid drained (ml) Mean volume drained 86.1 [+ or -] 28.2 96.1 [+ or -] 49.0 per day (ml) Parameter Significance Mean hospital stay (days) p>0.05 Mean time of stitch p>0.05 removal (days) Mean number of wound p>0.05 dressings Median duration of drainage (days) Average duration of p>0.05 drainage (days) Mean total volume of p>0.05 fluid drained (ml) Mean volume drained p>0.05 per day (ml) Table III. Wound complications Parameter Suction drain Simple drain Seroma 12/26 6/24 Haematoma 4/26 6/24 Wound infection 4/26 5/24 Flap necrosis 3/26 2/24 Epidemolysis 6/26 5/24 Wound dehiscence 2/26 2/24 Mean seroma volume 179 [+ or -] 366 63.5 [+ or -] 155 Mean number of aspirations 2.1 [+ or -] 3.0 0.9 [+ or -] 2.2 Wound debridement 0/26 1/24 Parameter Significance Seroma p>0.05 Haematoma p>0.05 Wound infection p>0.05 Flap necrosis p>0.05 Epidemolysis p>0.05 Wound dehiscence p>0.05 Mean seroma volume Mean number of aspirations Wound debridement