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ORIGINAL ARTICLE
Year : 2016  |  Volume : 11  |  Issue : 3  |  Page : 214-218

The role of subgaleal suction drain placement in chronic subdural hematoma evacuation


1 Department of Neurosurgery, NSCB Medical College, Jabalpur, Madhya Pradesh, India
2 Department of Neurosurgery, Gandhi Medical College, Bhopal, Madhya Pradesh, India

Date of Web Publication5-Apr-2016

Correspondence Address:
Yad Ram Yadav
Department of Neurosurgery, NSCB (Government) Medical College, Jabalpur, Madhya Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1793-5482.145096

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  Abstract 

Introduction: There is lack of uniformity about the preferred surgical treatment, role of drain, and type of drain among various surgeons in chronic subdural hematoma (CSDH). The present study is aimed to evaluate role of subgaleal drain.
Materials and Methods: This was a prospective study of 260 patients of CSDH treated surgically. Burr-hole irrigation with and without suction drain was done in 140 and 120 patients, respectively. Out of 120 patients without suction drain 60 each were managed by single and two burr holes. Pre- and postoperative GCS was recorded. Recurrent hematomas, CSDH secondary to tumor, due to intracranial hypotension, coagulopathy, children below 18 years, and patients treated by twist drill craniostomy or craniotomy were excluded. Subgaleal closed-system drainage with low negative pressure was used.
Results: Age of the patients ranged from 18 to 75 years with mean age of 57 years. There were 9, 47, 204 patients in GCS of 3-8, 9-12, and 13-15, respectively. Both the groups were comparable in terms of age, etiology, gender, and neurological status. There was no difference in the mortality in both the group. The recurrence and postoperative pneumocephalus was significantly less in suction drain group as compared to without drain group. There was no infection or any other complication related to suction drainage.
Conclusion: Subgaleal closed suction drainage was safe, simple, and effective in the management of CSDH. Recurrence rate was low in the suction drain group.

Keywords: Chronic subdural hematoma, intracranial subdural hematoma, operative surgical procedure, subdural hematoma, subgaleal drainage


How to cite this article:
Yadav YR, Parihar V, Chourasia ID, Bajaj J, Namdev H. The role of subgaleal suction drain placement in chronic subdural hematoma evacuation. Asian J Neurosurg 2016;11:214-8

How to cite this URL:
Yadav YR, Parihar V, Chourasia ID, Bajaj J, Namdev H. The role of subgaleal suction drain placement in chronic subdural hematoma evacuation. Asian J Neurosurg [serial online] 2016 [cited 2019 Nov 14];11:214-8. Available from: http://www.asianjns.org/text.asp?2016/11/3/214/145096


  Introduction Top


Chronic subdural hematoma (CSDH) is one of the most common neurosurgical conditions. The preferred surgical method continues to attract debate. There is lack of uniformity about the preferred surgical treatment (burr hole, twist drill, or the craniotomy) in CSDH among various surgeons. There is also disagreement about the use of irrigation and steroid.[1],[2] The incidence of CSDH is increasing due to an increase in aging population, associated medical diseases such as hemodialysis, anticoagulant, and/or antiplatelet therapy.[3],[4]

Although surgical techniques are simple but the recurrence remains one of the challenges in the treatment. There is controversy whether the use of drain decreases incidence of recurrence. Various types of drains have been used. Limited information is available about the role of subgaleal suction drain in CSDH.[5],[6] The present study is aimed to evaluate the role of subgaleal suction drain in CSDH.


  Materials and Methods Top


Between Jan 2008 and Dec 2010, a total of 260 patients with CSDH were treated surgically at a tertiary care center. This prospective study was approved by the institutional ethical committee and informed consent was obtained from all the patients. Symptomatic patients with diagnosis of CSDH of traumatic etiology were included based on the CT/MRI study of brain. Recurrent hematomas, bilateral hematomas, children below 18 years, CSDH due to coagulopathy, secondary to tumor and due to intracranial hypotension were excluded. Patients treated by twist drill or craniotomy were Also excluded. Patients were assigned by a simple random sampling method into two groups. One hundred and twenty patients underwent burr-hole irrigation without suction drain, while 140 patients underwent single burr-hole irrigation with suction drainage. Out of 120 patients without suction drain, 60 patients each were treated by single and two burr holes. Clinical laboratory studies before surgery included bleeding time, platelet count, prothrombin time, activated partial thromboplastin time, serum biochemical analysis, etc. Pre- and postoperative GCS were recorded. Clinical outcome was measured using the Glasgow outcome scale (GOS) at discharge and at 3 and 6 months after surgery. CT scans were done in all the 260 patients, while MRI scans were done in 23 cases due to financial constrains.

All patients were kept in bed with 15-30° head end raised postoperatively. The drainage catheters were kept for 72 hours after surgery in all the cases. Postoperative CT scans were done on 5th postoperative day and at 6 weeks after surgery in all cases. If the symptoms or clinical findings failed to improve or got worse, a repeat CT was performed. If the amount of postoperative air was more than 1 cm thickness on 5th postoperative day scan, it was considered as significant pneumocephalus. The patient received parenteral antibiotics for the first 3 postoperative days. Prophylactic anticonvulsants were given in unconscious patients. Recurrence of CSDH was defined as reappearance of clinical symptoms with evidence of CSDH in the same site on CT head after a minimum period of 1 month after surgery. For statistical analysis, chi-square and Student t-tests were used.

Procedure

One burr hole of 16 mm diameter was performed in all the cases. Dura matter and outer membrane were incised, and the hematoma cavity was washed out by warm physiological saline until the fluid became clear. The subdural space was filled with isotonic saline at the end of irrigation. Suction drain was inserted into the subgaleal space. Some of the openings of the suction tube were facing burr hole [Figure 1]. The end of the drain was kept away from the burr hole site to avoid any accidental slippage of the tube in the subdural cavity. About 5 cm space was created between galea and periostium all around the burr hole using blunt finger dissection. The suction drain was taken out from about a 5 cm away from the scalp incision. Subgaleal closed-system drainage of low negative pressure was created and left in place. We used Romovac suction drain (Romson). The collecting bag capacity of 400 ml and the catheter size of 16 French gauges were used. To create a low negative pressure, the collecting chamber was depressed to about 25% of its height only. The scalp was closed in two layers.
Figure 1: Line diagram showing placement of subgaleal suction drain

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  Results Top


There were 188 male and 72 female patients. Age of the patients ranged from 18 years to 75 years with mean age of 57 years. Both the groups were comparable in terms of age, etiology, gender, and neurological status. History of trauma could be ascertained in all the cases, CSDH secondary to other etiologies were excluded to make both the groups comparable.

Gait disturbance, memory loss, hemiparesis, headache, speech impairment, drowsiness were presenting features. Preoperative GCS ranged from 4 to 15. There were 9, 47, 204 patients in GCS 3-8, 9-12 and 13-15, respectively. CT scan revealed mainly hypodence lesions in 137 patients. Mainly mixed density or isodence CT lesions were seen in 120 and 3 patients. MRI could be done in 23 cases only. MRI scan on T1 W were mainly hyperintense, mixed intensity, and hypointense in 18, 4, and 1 patients, respectively. Hematomas were located in frontal, parietal, occipital, fronto-parieto-occipital, and fronto-temporo-parieto-occipital regions in 15, 9, 11, 98 and 127 patients respectively.

All the patients except eight cases showed good recovery after surgery (134 in suction drain and 114 in the without drain group). Moderate disability was seen in four each in the suction group and the without suction drainage group [Table 1]. There were two deaths each in the suction group and the without suction group (χ2 = 0.07488; P = 0.9632). There was one postoperative death each in single and two burr-hole group in the without suction drainage group. All the deaths were due to poor preoperative status. The hospitalization period after surgery was 6.5 (5-19) and 7 (4-20 days) days in the with and without drainage groups, respectively. The mean follow-up period was 21 months (4-40 months).
Table 1: A comparison of without and with suction drain groups

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The recurrence rate was 3.57% (5 patients) and 10% (12 patients) in the suction drainage group and the without drainage group, respectively (χ2 = 4.37; P = 0.0366 95% CI, –0.4868, –0.036011). This difference was statistically significant. The recurrence was in 7 (11.67%) and 5 (8.33%) patients in single and two burr-hole group respectively in the without suction drain group. This difference in single and two burrhole group was statistically not significant. Significant postoperative pneumocephalus (one or more than 1 cm width) was observed in 8 (5.71%) and 19 (15.83%) patients in the suction drain group and the without suction group, respectively (χ2 = 7.1096; P = 0.0077). This difference was statistically significant. There was no infection or any other complication related to suction drainage. One patient each developed seizures in each group.


  Discussion Top


Considerable body of evidence supporting the use of external drainage after evacuation of primary CSDH exists in the most of the reported series.[7],[8],[9],[10],[11],[12] Santarius et al.,[10] Ramachandran et al.,[13] Wakai et al.,[14] Tsutsumi et al.,[15] Gurelik et al.[16] reported 9.3%, 4%, 5%, 3.1%, 10.5% recurrence rate in the drainage group as compared to 24%, 30%, 33%, 17%, and 19% respectively in the without drain group [Table 2]. Santarius et al.[10] also reported lower 6 months mortality of 8.6% in the drain group as compared to 18.1% when drain was not used. On the other hand, there was no significant difference in the postoperative recurrence and the complications rates in the drainage group and the without drainage group in other studies.[17],[18] Advocates of no drain group argue that placing a drain could lead to complications such as brain injury, hemorrhage from neomembranes, and infection without reducing recurrence.
Table 2: Recurrences rates in the drain and without drain groups in chronic subdural hematomas

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Subdural, subperiosteal, and subgaleal drainage are being used for continuous drainage after surgery. Both the subdural and subperiosteal methods were found to be highly effective with a tendency to less mortality and fewer serious complications in subperiosteal drainage.[19] The subperiostal closed-drainage system is a technically easy, safe, and cost-efficient treatment strategy for CSDH. The absence of a drain in direct contact with the hematoma capsule may reduce the risk of postoperative seizure and limit the secondary spread of infection to intracranial compartments.[20] Although the mortality and the complications of the subperiosteal drain was lower than the subdural drain but the recurrence rate was more as compared to subdural drain.[19],[20]

Subgaleal suction drain was also found to be an effective and safe method in our study. It significantly reduced the incidence of recurrence in our series. Similar observations were made in other study.[6] It is a simple technique. Gazzeri et al. placed tip of suction drain on burr hole which can assist in continuous evacuation of hematoma or collected air.[6] We placed suction tip away from burr hole site which could avoid accidental slippage of tip in subdural space. Subgaleal drainage could avoid the risk of an acute hemorrhage from neo membrane injury which may occur during introduction and the removal of a subdural drain. It also reduces chances of brain parenchymal injury especially after suction drain.[21] A major complication of intracerebral hemorrhage could be due to a blind placement of the subdural drain. Acute subdural hematoma [18],[22] and intracerebral hematoma [19],[22] can develop into CSDH after subdural drainage. We did not come across any acute subdural hematoma or intracerebral hematoma but there is a report of one acute SDH after subgaleal drain.[6]

The subgaleal drain reduced the chances of significant pneumocephalus in our study. The amount of subdural air is correlated negatively with the resolution of a CSDH.[23] It impedes the adhesion of the inner and outer membranes, prolonging the widening of the subdural space thus promoting postoperative reaccumulation. The placment of subgaleal suction catheter could prevent the collection of subdural air, thus minimizing the risk of recurrence.[6] Intraoperative saline flushing, avoiding nitrous oxide and supine position could help in preventing pneumocephalus.[24] Introduction of saline in the cavity rather than air facilitates earlier expansion of the cerebrum.[25] Burr hole should be at the highest point to reduce pneumocephalus and the recurrence rate.[23]

One of the major reservations of a drain is that it may not be effective to reduce recurrence while the infective complications could be more after drain insertion. Although we did not encounter any infection in our series, subdural empyemas have been reported after subdural drain.[18], 22, [26],[27],[28] Postoperative infection in the subgaleal space has also been reported after subgaleal drainage.[6]


  Acknowledgment Top


Authors are grateful to Mr. Arvind Kavishwar Bio statistician for his help in statistics.

 
  References Top

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Mohamed EE. Chronic subdural haematoma treated by craniotomy, durectomy, outer membranectomy and subgaleal suction drainage. Personal experience in 39 patients. Br J Neurosurg 2003;17:244-7.  Back to cited text no. 5
    
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Wakai S, Hashimoto K, Watanabe N, Inoh S, Ochiai C, Nagai M. Efficacy of closed-system drainage in treating chronic subdural hematoma: A prospective comparative study. Neurosurgery 1990;26:771-3.  Back to cited text no. 14
    
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Tsutsumi K, Maeda K, Iijima A, Usui M, Okada Y, Kirino T. The relationship of preoperative magnetic resonance imaging findings and closed system drainage in the recurrence of chronic subdural hematoma. J Neurosurg 1997;87:870-5.  Back to cited text no. 15
    
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Gurelik M, Aslan A, Gurelik B, Ozum U, Karadag O, Kars HZ. A safe and effectivemethod for treatment of chronic subdural haematoma. Can J Neurol Sci 2007;34:84-7.  Back to cited text no. 16
    
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Javadi A, Amirjamshidi A, Aran S, Hosseini SH. Arandomized controlled trial comparing the outcome of burr-hole irrigation with and without drainage in the treatment of chronic subdural hematoma: A preliminary report. World Neurosurg 2011;75:731-6; discussion 620-3.  Back to cited text no. 17
    
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Ahmed S, Agrawal D, Kale SS, Mahapatra AK. A comparative study of treatment of chronic subdural hematoma – burr hole drainage versus continuous closed drainage. The Indian Journal of Neurotrauma 2011;8:17-23.  Back to cited text no. 18
    
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Bellut D, Woernle CM, Burkhardt JK, Kockro RA, Bertalanffy H, Krayenbühl N. Subduraldrainageversussubperiostealdrainage in burr-holetrepanation for symptomaticchronicsubduralhematomas. World Neurosurg. 2012 Jan; 77 (1):111-8. Epub 2011 Nov 15. Comment in World Neurosurg. 2012 Jan; 77 (1):51-2.  Back to cited text no. 19
    
20.
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21.
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    Figures

  [Figure 1]
 
 
    Tables

  [Table 1], [Table 2]


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