Open Journal of Nursing
Vol.07 No.01(2017), Article ID:73562,18 pages
10.4236/ojn.2017.71007

How Can Manual Rotation Reduce Vacuum, Forceps and Caesarean Deliveries? ―A Review of the Evidence

Cathrine Os1,2, Elisabeth Severinsson1

1The Centre for Women’s, Family & Child Health, Department of Nursing and Health Sciences, Faculty of Health and Social Sciences, University College of Southeast-Norway, Kongsberg, Norway

2Oslo University Hospital, Ullevål, Oslo, Norway

Copyright © 2017 by authors and Scientific Research Publishing Inc.

This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).

http://creativecommons.org/licenses/by/4.0/

Received: December 13, 2016; Accepted: January 15, 2017; Published: January 18, 2017

ABSTRACT

The aim of this review was to investigate whether manual rotation can be used to reduce vacuum, forceps and caesarean deliveries in women with occiput posterior or occiput transverse positions from 7 cm dilation in labour. A search strategy was developed and relevant papers published between 1946 and January 2015 were identified from electronic databases. Key search terms used were manual and digital rotation, labour presentation, obstetric labour complications, occiput posterior and version foetal. The search revealed 330 papers. A short list of 33 publications of possible relevance was compiled and assessed using the following criteria: primary studies on the effectiveness of manual rotation performed in women with singleton occiput posterior or occiput transverse presentations published in English or the Scandinavian languages. The quality of the included studies was evaluated by means of the critical appraisal tools for quantitative studies. Seven studies were included in the thematic analysis. The results varied but the main finding was that in order to decrease vacuum, forceps and caesarean deliveries by means of manual rotation, it is essential that the procedure is successful. The success rate of manual rotation is dependent on the experience of the healthcare professionals who perform the rotation procedure rather than the technique employed. Predictors of successful manual rotation were used after engagement of the foetal head, at full dilatation and prophylactic use before failure to progress in labour. In conclusion, although the results vary, there is a consensus in all the studies that manual rotation is worth considering and that it can contribute to decreasing vacuum, forceps and caesarean deliveries. The implications for practice are that successful manual rotation can reduce caesarean delivery and increase spontaneous vaginal delivery, but experience is necessary to perform successful rotations. Because there are no risk factors associated with manual or digital rotation when performed after engagement of the head and at full dilatation, they are worth considering. The central role of the midwife in each individual labour makes her important for ensuring that manual rotation can be considered at the right time in labour.

Keywords:

Literature Review, Midwifery, Manual and Digital Rotation, Labour Presentation, Occiput Posterior

1. Introduction

Occiput posterior (OP) and Occiput transverse (OT) positions have been associated with difficult labours for centuries [1] . For this reason, Dr William Smellie conducted and reported the first instrumental rotation from an OP to an Occiput Anterior (OA) in 1745 [2] . The benefits of rotating the foetus have been debated ever since, although it is well known that OP presentations represent a great risk [1] [3] [4] [5] .

The instrumental rotation forceps and instrumental delivery in general have been associated with many serious complications such as the 3rd and 4th degree lacerations, postpartum haemorrhage and neonatal morbidity, despite the fact that with appropriate training, the techniques can be performed safely [6] [7] . Manual rotation (MR) is a procedure where the whole hand is used to manually flex and rotate the foetus from an OP or OT to an OA presentation [8] . Digital rotation (DR) is when only the fingers are used to perform the rotation [9] . However, MR is the general term and will be used throughout the paper.

The MR technique was first documented in 1888 [10] . The procedure is employed as a technique to ensure that the head of the foetus is in a good position for application of the forceps [11] . For that reason, MR may have been associated with the risks involved in instrumental manoeuvers. However, it is a safe, effective and low cost procedure that increases the chance of vaginal delivery [12] [13] [14] .

It has been reported that the incidence of OP and OT positions in the first stage of labour is 33.9% and 27.7% respectively [15] . In the second stage, 19% of foetuses are still in an OP position and 16.7% in an OT position [15] . Although most foetuses in an OP position rotate spontaneously, 5.5 to 8.3% have been reported to remain in persistent occiput posterior (POP) position [5] [16] . Of these, 68% require a vacuum delivery (VD), Forceps delivery (FD) or Caesarean delivery (CD) [3] . The CD rate in Norway and worldwide has risen over the last three decades [17] . In 2013 every sixth child born in Norway was delivered by CD, which is about 10,000 children a year [18] .

There is a significantly increased risk of maternal morbidity associated with CD compared with spontaneous vaginal delivery. Complications occur in 21% of all CD patients [18] , the most common of which are postpartum bleeding and infections. Other complications are trauma to the bladder and intestines. A woman who underwent a CD has a 45% increased risk of another CD in subsequent labours [18] . Perhaps the greatest problem with undergoing a CD is the complication that can cause in subsequent pregnancies and labours such as miscarriages, bleeding during pregnancy, prolonged labour, premature labour and low birth weight. Serious complications reported include uterus rupture, ectopic pregnancy [18] , placenta praevia, placenta accrete [19] and intrauterine death [20] .

There are several reasons for a CD, making it necessary to consider different approaches for reducing the CD rate. Prolonged labour is the reason for 20.7% of all emergency CDs in Norway [18] . The reason for prolonged labour is diverse and complex, but mal presentation of the head of the foetus has been recognised as a great risk for dystocia. Of all emergency CDs, 18% are because of dystocia related to OP presentation [21] .

Research has been conducted on how to prevent dystocia and facilitate vaginal delivery, involving active management of labour [22] and one-to-one care in labour [23] . Although the results have not shown a significant reduction of the CD rate, many birth wards base their procedures for ensuring progress in labour on active management of labour research. However, these studies do not take the rotation and presentation of the foetal head into account.

2. Aim

The aim of this study was to investigate whether MR can be used from 7 cm dilation in labour to reduce VD, FD and CD in women with OP or OT positions.

3. Methods

3.1. Inclusion Criteria for This Review

Studies were selected for inclusion based on the population, intervention, comparison, outcome measures and study design.

Population: Women in labour with a singleton, non-anomalous, live birth. Three of the included studies described rotation of OP positions, while four described rotation of both OP and OT positions.

Intervention: Manual rotation after 7 cm dilatation.

Comparison: Four of the included studies compared MR with expectant management and three compared successful MR with unsuccessful MR.

Outcome measures: Vacuum, forceps or caesarean delivery.

Study design: Primary studies.

Exclusion criteria were MR or DR used on other cephalic presentations and unpublished literature.

3.2. Search Methods for Identification of Studies

The systematic search was conducted in the Medline, Ovid Medline, SveMed+, Cinahl, Cochrane Library, Maternity and infant care and Up To Date databases for the period 1946 to January 2015 with guidance from a specialist librarian employed at the Medical Library of Oslo University hospital, Ullevål. The following keywords were employed: manual rotation and digital rotation, labour presentation, obstetric labour complications, occiput posterior and version foetal. The search and findings were reported according to the method described by Aveyard [24] . An example of the search in one of the main databases, Ovid Medline is presented in Table 1.

A total of 330 papers were retrieved from the database search, of which seven were included in the thematic analysis (Figure 1).

3.3. Data Collection and Analysis

3.3.1. Study Selection, Data Extraction and Management

A list of articles that met the inclusion criteria based on abstracts was compiled. The full texts of these studies and those of possible relevance were retrieved and evaluated in accordance with the inclusion criteria.

The following data were extracted from all selected studies: general information (authors, publication year and country of investigation), aim, design and number of patients. A summary of the included articles is presented in Table 2.

3.3.2. Quality Assessment

The seven articles were evaluated using tools from the Critical Appraisal Skills programme (CASP) [25] (Table 3). They included one case control study, two cohort studies and one pilot study. The remaining three were a mix of retrospective and prospective studies with no other definition. The pilot study and the

Table 1. An example of the search in Ovid Medline.

Figure 1. Flowchart of selection of studies for the review.

Table 2. Study characteristics of the included studies quality assessment.

Caesarean Delivery = CD, Instrumental Delivery = ID, Manual Rotation = MR, Occiput posterior = OP, Occiput transvers = OT, Operative Delivery = OP, Persistent Occiput Posterior = POP.

Table 3. Quality assessment of the included studies.

non-defined studies were evaluated by means of the CASP cohort study checklist. The methodical quality was measured on the basis of the CASP questions. The questions with the following response alternatives: Yes, No, Unclear, or No information were applied. The assessment process was inspired by Berg et al. [26] .

Explanation of assessment of study quality: High quality: All or almost all of the checklist criteria were met. Unlikely that the conclusions will change. Studies met >50% of the criteria. Medium quality: Some of the criteria were not met or the study does not adequately address the criteria. Unlikely that the conclusions will change. Studies met >50% or 50% of the criteria. Low quality: Few or no criteria were met and criteria not adequately addressed. The study conclusions are likely to change. Studies met <50% of the criteria. The process of scoring the quality of the studies from high to low was inspired by Berg et al. [26] and discussed with the supervisor.

3.3.3. Analysis

Information from the included articles was summarized in a table and sorted by publication year. A thematic analysis was conducted [24] based on the literature review question “How can MR reduce VD, FD and CD” and the main findings of each of the included studies.

4. Findings

4.1. Study Characteristics and Methodological Quality

Seven studies were included in the literature review, none of which was a randomized controlled trial (RCT). There were two Cohort studies [14] [27] one Case-control study [13] and one Pilot study [28] . The rest were a mix of retrospective and prospective studies [29] [30] [31] .

The article by Graham et al. [28] is a pilot study. Although it is of medium methodological quality, the results are not be of great importance for this paper due to the small population, that makes the study underpowered to test the efficiency of prophylactic DR. Nevertheless, it is a valuable study because it shows that a large double-blinded multi-centre RCT is feasible. Although the study by Sen et al. [31] was not excluded despite its low methodological quality, papers by Le Ray et al. [13] , Le Ray et al. [29] and Shafferet al. [14] were given the highest methodological were prioritised in the thematic analysis. The studies by Shaffer et al. [27] and Reichman et al. [30] were of medium quality.

4.2. Thematic Analysis

Six themes emerged: How can MR reduce VD, FD and CD?; Mode of delivery after MR versus expectant management; Mode of delivery after successful or unsuccessful MR; Technique and success rate; Midwives’ involvement in the MR; and Predictors of successful or unsuccessful MR.

4.3. How Can Manual Rotation Reduce Vacuum Delivery, Forceps Delivery and Caesarean Delivery?

All of the included studies suggest that MR is a procedure to consider for reducing VD, FD and CD rates.

Interpretations of Findings

Having studied the conclusions of each study, there is a consensus that MR is a procedure worth considering as it can contribute to reducing VD, FV and CD.

The authors based their reasons for arguing that MR can reduce VD, FD and CD on two different findings. Reichman et al. [30] , Shaffer et al. [14] , Le Ray et al. [29] and Graham et al. [28] were influenced by the findings related to mode of delivery after MR versus expectant management.

Shaffer et al. [27] , Le Ray et al. [13] and Sen et al. [31] referred to the findings related to mode of delivery after successful versus unsuccessful MR. The results will be presented separately as: mode of delivery after MR versus expectant management (Table 4) and mode of delivery after successful versus unsuccessful MR (Table 5).

Three of the included studies described rotation of OP positions [28] [30] [31] , Four described rotation of both OP and OT positions [13] [14] [27] [29] . Only Le Ray et al. [29] referred to the success rate when comparing rotation from the two positions, although they did not observe any difference in the success of rotations from OT and OP positions.

4.4. Mode of Delivery after Manual Rotation versus Expectant Management

Reichman et al. [30] revealed that none of the women who underwent MR had a CD (Table 4). Shaffer et al. [14] reported a CD reduction rate of 32.8 % after MR. Although Le Ray et al. [29] only found a CD reduction rate of 1.7% after MR, there was a 15.4% reduction in the operative delivery rate. Both Reichman et al. [30] and Le Ray et al. [29] found an increase in instrumental delivery rates after MR of 27.4% and 13.8%. Shaffer et al. [14] reported almost identical instrumental delivery rates after MR and expectant management. Reichman et al. [30] and Le Ray et al. [29] found an increase in spontaneous vaginal delivery of 50.1% and 15.5% after MR. The study by Graham et al. [28] lacks the power to provide answers on rates.

Interpretations of Findings

The studies on MR versus expectant management differed in many ways, but an important similarity between Reichman et al. [30] , Le Ray et al. [29] and Graham et al. [28] was that the diagnosis of the OP or OT position was made in the second stage of labour.

The expectant management group in the study by Shaffer et al. [14] reported POP positions diagnosed at delivery, which can explain the very high CD rate that might be due to failure to take account of OP position that would have

Table 4. Mode of delivery after MR or expectant management.

Caesarean Delivery = CD, Instrumental Delivery = ID, Operative Delivery = OP, Forceps Delivery = FD, Spontaneous Vaginal Delivery = SVD, Vaginal Delivery = VD, Undefined Vaginal Delivery =UVD, NI = No Information.

spontaneously rotated had they been diagnosed in the second stage of labour. OP positions are associated with a large proportion of emergency CD [18] . Of all emergency CDs, 18% are due to dystocia related to OP presentation [21] .

Shaffer et al. [14] found almost equal instrumental rates after MR and expectant management. The high rate in the expectant management group was no surprise, as all the deliveries involved POP positions, a large proportion of which require a VD, FD or CD [3] . However, the high instrumental delivery rate in the MR group was not anticipated [14] and could be related to the relatively low success rate of 74%. Furthermore, there is no way of knowing whether the instrumental delivery took place after a successful or unsuccessful rotation. For this reason, there might have been many unsuccessful rotations that led to the need for an instrumental delivery. A high rate in successful MR could be related to the fact that MR corrects the foetal head in the birth canal, making VD or FD easier to implement.

The main results show an increase of spontaneous vaginal delivery after MR. While the CD and instrumental rates vary, there seems to be an overall decrease in the operative delivery rate after MR (Table 4).

4.5. Mode of Delivery after Successful or Unsuccessful Manual Rotation

Le Ray et al. [13] and Shaffer et al. [27] found that women with successful MR had a significantly lower CD rate (p < 0.001) (Table 5). In the study by Sen et al. [31] none of the successful MRs needed a CD.

The instrumental rate reported by Le Ray et al. [13] was higher in the successful MR group, but the difference was not significant.

Le Ray et al. [27] also demonstrated that women with a successful MR had a 50.9% increase in the spontaneous vaginal delivery rate. Shaffer et al. [27] show- ed that women who had a successful MR had nearly a three-fourths increase in undefined vaginal delivery.

Interpretations of Findings

Sen et al. [31] did not analyse MR as an individual procedure, but 17 cases of MR and 13 Posture changes. Although the small population led to a lack of power,

Table 5. Mode of delivery after successful or unsuccessful MR.

Caesarean Delivery = CD, Instrumental Delivery = ID, Undefined Vaginal Delivery = UVD, NI = No Information.

the conclusion is interesting. Only eight of the 17 cases had a successful MR, but none of the women with a successful MR needed a CD.

The instrumental delivery rate in Le Ray et al. [13] was higher in the successful MR group, but the difference was not significant, for which no explanation was given. However, it could be due to the fact that MR corrects the foetal head in the birth canal, making VD or FD easier to implement.

It is important to investigate whether the MR was successful or unsuccessful in order to understand the impact of rotation on mode of delivery. The results from the included studies on successful versus unsuccessful MR show a significant reduction in CD and an increase of spontaneous vaginal delivery after successful MR (Table 5).

4.6. Technique and Success Rate

The success rate varied from 47% to 93.3% (Table 6). Two main techniques, MR and DR, were used in the studies. Some of the studies used MR or DR as the main term for the rotation procedure, even though the other technique was also performed.

Interpretations of Findings

Having studied the results it appears that the choice of technique does not have a major influence on the success rate.

4.7. Midwives’ Involvement in Manual Rotation

In all of the included studies midwives supervised the labour and attended the physician performing MR. Midwives who experienced in MR also performed the procedure in all studies, with the exception of Sen et al. [31] and Graham et al. [28] .

4.8. Predictors of Successful or Unsuccessful Manual Rotation

MR has the best chance of success when performed at full dilatation [13] after engagement of the head [13] [31] and when done prophylactically before failure to progress [13] (Table 7).

5. Discussion

This literature review investigated how MR can reduce VD, FD and CD. Based on the inclusion criteria, we identified seven quantitative studies from France, Israel, the USA, Japan and Australia that investigate this issue. MR was considered after diagnosis of an OP or OT position during labour at a dilatation of at least 7 cm. A thematic analysis was conducted in accordance with the method described by Aveyard [24] . Six themes emerged: How can MR reduce VD, FD and CD? Mode of delivery after MR versus expectant management; Mode of delivery after successful or unsuccessful MR; Technique and success rate; Midwives’ involvement in MR; and Predictors of successful or unsuccessful MR, all of which are important for determining how MR can reduce VD, FD and CD.

Table 6. Technique and success rate.

Digital Rotation = DR, Occiput Posterior = OP, Occiput Transverse = OT, Occiput Anterior = OA, Manual Rotation = MR.

Table 7. Predictors of successful or unsuccessful MR.

Epidural = EDA, Caesarean Delivery = CD, Manual Delivery = MR.

5.1. Mode of Delivery and Models of Care

All of the included studies suggest MR as a procedure to consider for reducing VD, FD and CD rates.

The main aim of midwives and obstetricians in maternity care is to protect the health of mother and child. The two professions are based on two fundamentally different models of care [32] . Midwives are responsible for normal labours, due to their expertise in protecting, supporting and enhancing the normal physiology of labour [32] . Physicians have a background in medicine and are responsible for the pathologic aspects of labour, with often involve diagnosing and treating complications [32] . In reality, despite the fact that these two basic differences are non-debatable, the two professions share information, expert opinions and research, working together to holistically safeguard both the physiological and the pathological labour.

Labours with OP and OT positions often start normally but pathology can develop during the process. These malpositions are diversities of foetal rotation and while not pathological, involve a risk of pathology. Obstetricians and midwives work together to protect the health of mother and child, but how to manage an individual labour and decide when to intervene can be a subject of debate, especially between midwives and obstetricians.

It is relevant to argue that most OP positions rotate spontaneously and for that reason expectant management is the best approach. Nevertheless, OP and OT positions are associated with a greater risk of prolonged second stage labour and maternal morbidity [1] . As many as 5.5 to 8.3% of OP positions are persistent [5] [16] of which 68% require an OD [3] . Many OP positions rotate during the first stage of labour [15] .

Le Ray et al. [13] and Sen et al. [31] state that a predictor of successful MR is performing the procedure at full dilatation. This indicates that MR should be performed in stage two of labour, at which point many of the OP presentations that spontaneously rotate have already done so. Le Ray et al. [13] found that MR has a better chance of success when performed prophylactically before failure to progress. In expectant management, the indication for MR is likely to be failure to progress, which reduces the chance of successful MR.

Because midwives are responsible for monitoring normal labours and most labours with OP and OT positions start normally, it is their duty to diagnose the OP or OT position. Many midwives believe that expectant management is the best way to manage labour because they understand it as a normal physiological process and therefore try to avoid unnecessary interventions. However, for expectant management to support natural physiological labour it is necessary to monitor the rotation and presentation of the foetus when assessing progress. The results from the included studies show a reduction in the OD rate and an increase of SVD after MR versus expectant management (Table 4). For this reason MR can contribute to protecting, supporting and enhancing the normal physiology of labour by facilitating SVD.

Midwives’ and physicians’ different models of care [32] can also have consequences for the mode of delivery, in that a midwife performs MR to support and enhance the normal physiology of labour. In other words, the midwife performs MR and then waits to see if the labour proceeds normally, as this is the basic philosophy of the midwifery profession. On the other hand, obstetricians might find it easier to convert the MR procedure into an ID due to their underling expectation to treat and the fact that performing obstetric interventions is their area of expertise. This can explain the high level of ID after successful rotations in Le Ray et al. [13] .

5.2. Technique and Experience

The included studies demonstrate the great importance of successful MR for reducing VD, FD and CD (Table 6). For this reason, we investigated the predictors of successful rotation, only to find that none of the studies highlighted the actual MR technique as a predictor of success. As MR is a handcraft with wide interpretations, it was interesting to explore the different techniques used and the success rate in each study (Table 5). However, the choice of technique did not seem to influence the success rate and instead experience appears to be the decisive factor. In most studies experienced personnel performed MR or supervised less experienced colleagues. This is a traditional and valuable way of working as it provides inexperienced personnel with hands on experience, an opportunity to ask about the procedure and receive advice [33] . However, gaining experience requires midwives and physicians to perform MR. Two large surveys were conducted in Australia and New Zealand to increase understanding of midwives’ and obstetricians’ attitudes towards MR [34] [35] . It was found that while only a minority of obstetricians and midwives perform MR, most consider the procedure acceptable. Midwives and Obstetricians would be willing to perform MR if it was known to decrease OD from 68% to a median of 50%. From my own experience as a midwife, I believe that this survey is relevant and also reflects Norwegian Midwives’ and Obstetricians’ attitudes towards MR. Experience is of great importance for achieving the best possible results in most handcrafts [7] . Le Ray et al. [13] states that the low failure rate in the study is probably related to the efficacy of this technique when used routinely.

5.3. Midwives’ Role in Labour and Involvement in the Manual Rotation Procedure

OP and OT positions are associated with a prolonged first and second stage of labour [1] [5] . Admission to the maternity ward can be a long and painful experience for the woman and a challenge for the midwife. In addition to emotional support, the midwife provides pain relief and information, as well as monitoring the progress of both mother and foetus. Recent research confirms that continuous care in labour contributes to increased SVD, decreases the need for analgesia, leads to less dissatisfaction and can reduce the need for CD and instrumental delivery [23] . There are many ways of supporting women in labour. The best support is dependent on what becomes a challenge in each individual labour and the woman’s motivation and resources, both physical and psychological. The study on continuous support for women during childbirth [23] does not define the concept. Other than suggesting that it can be emotional support, comforting measures, information and advocacy, it was also stated that the best support was given by someone other than hospital staff. This indicates that the midwife’s special competence regarding the labour process may not be the only support needed to facilitate spontaneous vaginal delivery. However, because of the risk factors involved, when faced with OP or OT positions, the midwife’s competence is important for providing adequate comfort measures, information and advocacy to prevent maternal complications or to support the woman when the obstetrician has to intervene. Few other professions in the obstetric field work as close to the individual women in labour, which gives midwives a huge advantage in terms of their responsibility to monitor the birth process and therefore also the rotation of the foetus during labour. A diagnosis of OP position made early in labour is important because the MR rotation may be easier to perform before the labour fails to progress [13] . The midwife attending the labour can perform the MRor in the event of lacking the necessary skill, can ensure that the situation is evaluated at the right time by a midwife or an obstetrician with competence in performing MR.

Midwives supervised labours and attended doctors performing MR in all of the included studies. They also performed MR in all studies with the exception of Sen et al. [31] and Graham et al. [28] .

5.3. Limitations of this Review

This literature review has several limitations. A meta-analysis was not possible due to the diversity of the aims, design and population in the included studies [24] . None of the studies were RCTs and of the seven included studies, only three had a high methodological quality. When conducting a review, the researcher is in danger of making choices regarding the selection of studies and data extraction that could lead to the risk of bias [36] .

6. Conclusion

In conclusion, a successful MR can reduce CD rates and facilitate spontaneous vaginal delivery. However, experience is necessary to achieve successful rotations. MR is worth considering as there are few risk factors involved.

7. Implications for Practice

It is important that midwives diagnose the OP or OT position early in labour so that MR can be considered at the right time, thus increasing the chances of success. Midwives have the benefit of being close to the individual women, enabling them to evaluate the progress of labour and therefore the rotation of the foetus. Midwives have a great opportunity to achieve high competence in this area and may prevent labours with malposition from developing a pathological pattern. However, to make MR a safe treatment option there is a need for training programmes that focus on diagnosing foetal position and presentation.

It is also essential that the documentation during labour is designed to include the position and presentation of the foetus in the same way as it requires information on dilatation and descent of the foetal head. This will make diagnosing the foetal position a necessity when documenting all labours, which implies that midwives will have to develop or improve their skills.

When it comes to making MR a routine treatment option, an important implication for practice is positive commitment from midwives and doctors. Commitment and focus are required in order to ensure that diagnosis of foetal position and presentation becomes a natural part of evaluating the progress of labour.

There is also a need for RCTs to verify the results of the studies in this review. Two double-blinded multicentre RCTs are now being conducted in Australia [37] [38] that may provide results that can be incorporated into professional guidelines for obstetricians and midwives.

Acknowledgements

The authors acknowledge Signy Solberg, Toril Hestnes and all the helpful people at the University of Oslo Library, Medical Library, and Ullevål Hospital with guidance on the systematic search process and the End Note library. We would also like to thank Annsofie Adolfsson and Aase Serine Devold Pay with necessary feedback and suggestions on improvements along the way as well as Monique Federsel for reviewing the English language of the final product. The study was partly funded by the University College of Southeast-Norway.

Contributors

The study was designed by C.O. The report was written by C.O. E.S. supervised the study.

Conflicts of Interest

The author’s declare there are no conflicts of interest.

Cite this paper

Os, C. and Severinsson, E. (2017) How Can Manual Rotation Reduce Vacuum, Forceps and Caesarean Deliveries?―A Review of the Evidence. Open Journal of Nursing, 7, 68-85. http://dx.doi.org/10.4236/ojn.2017.71007

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