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Intervenciones para el tratamiento de la hemorragia posextracción

Appendices

Appendix 1. Cochrane Oral Health's Trials Register search strategy

  1. ((tooth or teeth or molar* or bicuspid* or cuspid* or incisor*):ti,ab) AND (INREGISTER)

  2. ((extract* or remov* or surgery):ti,ab) AND (INREGISTER)

  3. (#1 and #2) AND (INREGISTER)

  4. ((bleed* or "blood loss" or hemorrhag* or haemorrhag* or hemorrag* or haemorrag*):ti,ab) AND (INREGISTER)

  5. (#3 and #4) AND (INREGISTER)

Appendix 2. The Cochrane Central Register of Controlled Trials (CENTRAL) search strategy

#1 [mh ^"Tooth extraction"]
#2 [mh Tooth]
#3 (tooth or teeth or molar* or bicuspid* or cuspid* or incisor*)
#4 [mh ^"Tooth, impacted"]
#5 {or #2‐#4}
#6 (extract* or remov* or surgery)
#7 #5 and #6
#8 #1 or #7
#9 [mh ^"Blood loss, surgical"]
#10 [mh ^"Postoperative hemorrhage"]
#11 [mh ^"Hemorrhagic disorders"]
#12 [mh ^"Oral hemorrhage"]
#13 (bleed* or "blood loss" or hemorrhag* or haemorrhag* or hemorrag* haemorrag*)
#14 {or #9‐#13}
#15 #8 and #14

Appendix 3. MEDLINE Ovid search strategy

1. Tooth extraction/
2. exp Tooth/
3. (tooth or teeth or molar$ or bicuspid$ or cuspid$ or incisor$).ti,ab.
4. Tooth, impacted/
5. or/2‐4
6. (extract$ or remov$ or surgery).ti,ab.
7. 5 and 6
8. 1 or 7
9. Blood loss, surgical/
10. Postoperative hemorrhage/
11. Hemorrhagic disorders/
12. Oral hemorrhage/
13. (bleed$ or "blood loss" or hemorrhag$ or haemorrhag$ or hemorrag$ or haemorrag$).ti,ab.
14. or/9‐13
15. 8 and 14

This subject search was linked to the Cochrane Highly Sensitive Search Strategy (CHSSS) for identifying randomised trials in MEDLINE: sensitivity‐maximising version (2008 revision) as referenced in Chapter 6.4.11.1 and detailed in box 6.4.c of The Cochrane Handbook for Systematic Reviews of Interventions, Version 5.1.0 [updated March 2011] (Lefebvre 2011).

1. randomized controlled trial.pt.
2. controlled clinical trial.pt.
3. randomized.ab.
4. placebo.ab.
5. drug therapy.fs.
6. randomly.ab.
7. trial.ab.
8. groups.ab.
9. or/1‐8
10. exp animals/ not humans.sh.
11. 9 not 10

Appendix 4. Embase Ovid search strategy

1. Tooth extraction/
2. exp Tooth/
3. (tooth or teeth or molar$ or bicuspid$ or cuspid$ or incisor$).ti,ab.
4. 2 or 3
5. (extract$ or remov$ or surgery).ti,ab.
6. 4 and 5
7. 1 or 6
8. Bleeding/
9. Bleeding disorder/
10. Oral bleeding/
11. (bleed$ or "blood loss" or hemorrhag$ or haemorrhag$ or hemorrag$ or haemorrag$).ti,ab.
12. or/8‐11
13. 7 and 12

This subject search was linked to an adapted version of the Cochrane Centralised Search Project filter for identifying RCTs in Embase Ovid (see http://www.cochranelibrary.com/help/central‐creation‐details.html for information):

1. Randomized controlled trial/
2. Controlled clinical study/
3. Random$.ti,ab.
4. randomization/
5. intermethod comparison/
6. placebo.ti,ab.
7. (compare or compared or comparison).ti.
8. ((evaluated or evaluate or evaluating or assessed or assess) and (compare or compared or comparing or comparison)).ab.
9. (open adj label).ti,ab.
10. ((double or single or doubly or singly) adj (blind or blinded or blindly)).ti,ab.
11. double blind procedure/
12. parallel group$1.ti,ab.
13. (crossover or cross over).ti,ab.
14. ((assign$ or match or matched or allocation) adj5 (alternate or group$1 or intervention$1 or patient$1 or subject$1 or participant$1)).ti,ab.
15. (assigned or allocated).ti,ab.
16. (controlled adj7 (study or design or trial)).ti,ab.
17. (volunteer or volunteers).ti,ab.
18. trial.ti.
19. or/1‐18
20. (exp animal/ or animal.hw. or nonhuman/) not (exp human/ or human cell/ or (human or humans).ti.)
21. 19 not 20

Appendix 5. CINAHL EBSCO search strategy

S13 S8 and S12
S12 S9 or S10 or S11
S11 (bleed* or "blood loss" or hemorrhag* or haemorrhag* or hemorrag* haemorrag*)
S10 (MH "Postoperative Hemorrhage")
S9 (MH "Blood Loss, Surgical")
S8 S1 or S7
S7 S5 and S6
S6 (extract* or remov* or surgery)
S5 S2 or S3 or S4
S4 (MH "Tooth, Impacted")
S3 (tooth or teeth or molar* or bicuspid* or cuspid* or incisor*)
S2 (MH "Tooth+")
S1 (MH "Tooth Extraction")

This subject search was linked to Cochrane Oral Health’s filter for CINAHL EBSCO:

S1 MH Random Assignment or MH Single‐blind Studies or MH Double‐blind Studies or MH Triple‐blind Studies or MH Crossover design or MH Factorial Design
S2 TI ("multicentre study" or "multicenter study" or "multi‐centre study" or "multi‐center study") or AB ("multicentre study" or "multicenter study" or "multi‐centre study" or "multi‐center study") or SU ("multicentre study" or "multicenter study" or "multi‐centre study" or "multi‐center study")
S3 TI random* or AB random*
S4 AB "latin square" or TI "latin square"
S5 TI (crossover or cross‐over) or AB (crossover or cross‐over) or SU (crossover or cross‐over)
S6 MH Placebos
S7 AB (singl* or doubl* or trebl* or tripl*) or TI (singl* or doubl* or trebl* or tripl*)
S8 TI blind* or AB mask* or AB blind* or TI mask*
S9 S7 and S8
S10 TI Placebo* or AB Placebo* or SU Placebo*
S11 MH Clinical Trials
S12 TI (Clinical AND Trial) or AB (Clinical AND Trial) or SU (Clinical AND Trial)
S13 S1 or S2 or S3 or S4 or S5 or S6 or S9 or S10 or S11 or S12

Appendix 6. US National Institutes of Health Trials Registry (ClinicalTrials.gov) search strategy

“oral surgery” and bleed

“oral surgery” and hemorrhage

tooth and extraction and bleed

tooth and extraction and hemorrhage

Appendix 7. The WHO International Clinical Trials Registry Platform search strategy

Oral surgery and bleed

Oral surgery and hemorrhage

Oral surgery and haemorrhage

Tooth extraction and bleed

Tooth extraction and hemorrhage

Tooth extraction and haemorrhage

Appendix 8. Studies we translated and rejected as ineligible for inclusion

Trial identification

Title

Language

Translator/s

Reasons for rejection

Trentalancia 1967

The use of 5‐oxytryptamine in post‐extraction haemorrhages

Italian

Giovanni Lodi

1. The study is not randomised. Randomisation is never mentioned. The author stated that "the patients have been divided as follows" (page 1386).

2. Patients were at risk of bleeding, and not with post‐extraction bleeding.

Pavek 1976

Evaluation of the haemostatic effect of Dicynon in dentoalveolar surgery

Czech

Andrea Pokorna

The study does not fulfil criteria as it describes application of Dicynone in four groups of patients – no randomisation, no detailed description of the patient groups.

Szpirglas 1979

Stomatological haemorrhages; haemostasis with GRF (gelatin‐resorcin‐formol)

Italian

Maddalena Manfredi

This study is a description of a topical haemostasis technique without any report about patients.

Marini 1966

Therapy of post‐extraction haemorrhages in haemophiliac patients with epsilon‐aminocaproic acid (EACA).

Italian

Maddalena Manfredi

This is a case series.

Torteli 1965

Use of "reptilase" in postoperative haemorrhage of the dental apparatus

German

Ubai Alsharif

This is a case series of 14 patients who were treated with Raptilase, and does not fulfil the inclusion criteria.

Zhou 1985

Prevention and treatment of haemorrhage after extraction of teeth by using the pulvis of cibotium barometz‐alum burn

Chinese

Dr Liyuan Ma, Professors Chengge Hua, Zongdao Shi and Mr.Loh Zheng Tao

The trial is a RCT with two arms; however, the randomisation method is not reported. This is a preventive study for reducing post‐extraction complications including PEB, instead of managing post‐extraction bleeding.

Antoszewski 1972

Cepevit‐K preparation in controlling haemorrhages and bleeding following tooth extraction

Polish

Joanna Zajac and Malgorzata Bala

Not a randomised controlled trial. They used Cepevit‐K:

‐ after extraction for 22 patients (for 17, bleeding was stopped within eight minutes; chirurgical treatment was provided for the others).

‐ two days before extraction in 18 patients with low coagulation time (for four patients in this group, additional chirurgical treatment was needed).

The only comparison is 20 other people with bleeding after tooth extraction, where the author used other techniques (other than chirurgical treatment); it only worked for eight patients, so the other 12 were given Cepevit‐K.

Fetkowska‐Mielnik 1969

Clinical evaluation of the results of treatment of post‐extraction bleeding with new drugs E.A.C.A., styptanon

Polish

Joanna Zajac and Malgorzata Bala

Not a randomised controlled trial.

Study was based on observation of 69 patients, all with blood coagulation problems: some after extraction with bleeding, some before extraction.

For all blood analyses were done and according to results:

‐ for some: epsilon aminocaproic acid (EACA) was used

‐ for others: Styptanon was used

‐ for others: EACA and Styptanon together

Khomiachenko 1978

Use of aminocaproic acid for stopping the haemorrhage after tooth extraction

Russian

Lilia Ziganshina and Anna Misyail Abdul Rashid

This is an abstract describing 100% success of 5% aminocapronic acid in 135 patients. This was not a trial; there was no comparison.

Neuner 1968

Therapy of haemorrhage following extractions

German

Karin Rau and Anette Bluemle

This is not a randomised control trial. In this publication, the interventions for post‐extraction bleeding are explained in detail, but not within the scope of a clinical study.

Saltykova 1974

The use of new haemostatic drug in dental practice

Russian

Lilia Ziganshina and Anna Misyail Abdul Rashid

This is a single case report.

Martineau 1989

Hemorrhage in the dental office. Study of local haemostatic treatment

French

Paul Tramini

This paper is just a recommendation for practitioners and students in case of PEB problems. No data are available.

Rokicka‐Milewska 1966

Application of epsilon‐aminocaproic acid for oral mucosal bleeding in haemophiliacs

Polish

Joanna Zajac and Malgorzata Bala

This article is not a RCT. All participants (13 children with haemophilia: nine type A and four type B) received epsilon‐aminocaproic (20% solution) acid 24 hours before tooth extraction. Intolerance developed in some children, so the dose was changed (from 0.1 g/kg of body weight to 0.05g/kg), or the drug was administered intravenously.

Different phases of coagulation
Figuras y tablas -
Figure 1

Different phases of coagulation

Study flow diagram
Figuras y tablas -
Figure 2

Study flow diagram

Summary of findings for the main comparison. Summary of findings for interventions to treat post‐extraction bleeding

Interventions for treating post‐extraction bleeding

Patient or population: people with post‐extraction bleeding

Settings: hospital or dental practice

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Bleeding, as measured by:

  • amount of blood loss;

  • complete cessation of bleeding, as assessed clinically by the investigator;

  • time required for the control of bleeding.

No data are available as no RCTs have been conducted

on interventions to treat post‐extraction bleeding

Patient‐reported outcomes related to pain or discomfort during the procedure

Treatment‐associated average cost

Adverse events

*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: confidence interval

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

Figuras y tablas -
Summary of findings for the main comparison. Summary of findings for interventions to treat post‐extraction bleeding
Table 1. Types of bleeding after dental extractions

Normal bleeding

Post‐extraction bleeding

Primary

Reactionary

Secondary

  • Normally persists for up to half an hour

  • Oozing and blood tinged saliva for up to 8 hours

  • Controlled by pressure pack

  • Occurs during and immediately after extraction

  • Typically presents as blood filling up the mouth

  • Usually due to infection or trauma to blood vessels

  • Often controlled by local techniques like pressure packs, haemostatic agents, etc

  • Begins two to three hours post extraction, after the vasoconstrictor effect of local anaesthesia wears off

  • Usually due to underlying systemic conditions such as bleeding or clotting disorders

  • Not controlled by local measures and may require systemic interventions

  • Usually begins 7 to 10 days post extraction

  • Mainly due to secondary infection

  • Rare in dental extractions, compared to the other two types of post‐extraction bleeding

Figuras y tablas -
Table 1. Types of bleeding after dental extractions
Table 2. Summarising the risk of bias for a body of evidence

Risk of bias

Interpretation

In outcome

In included studies

Low risk of bias

Plausible bias unlikely to seriously alter the results

Low risk of bias for all key domains

Most information is from studies at low risk of bias

Unclear risk of bias

Plausible bias that raises some doubt about the results

Unclear risk of bias for one or more key domains

Most information is from studies at low or unclear risk of bias

High risk of bias

Plausible bias that seriously weakens confidence in the results

High risk of bias for one or more key domains

The proportion of information from studies at high risk of bias is sufficient to affect the interpretation of results

Figuras y tablas -
Table 2. Summarising the risk of bias for a body of evidence