A review of enhanced recovery for thoracic anaesthesia and surgery
A review of enhanced recovery for thoracic anaesthesia andsurgery
N. L. Jones,1 L. Edmonds,2 S. Ghosh1 and A. A. Klein1
1 Consultant, Anaesthesia and Intensive Care, 2 Library and Knowledge Services Manager, Papworth Hospital,Cambridge, UK
SummaryDuring the past decade, there has been a dramatic increase in the number of thoracic surgical procedures carried outin the UK. The current financial climate dictates that more efficient use of resources is necessary to meet escalatingdemands on healthcare. One potential means to achieve this is through the introduction of enhanced recovery proto-cols, designed to produce productivity savings by driving reduction in length of stay. These have been promoted bygovernment bodies in a number of surgical specialties, including colorectal, gynaecological and orthopaedic surgery. This review focuses on aspects of peri-operative care that might be incorporated into such a programme for thoracicanaesthesia, for which an enhanced recovery programme has not yet been introduced in the UK, and a review of theliterature specific to this area of practice has not been published before. We performed a comprehensive search forpublished work relating to the peri-operative management and optimisation of patients undergoing thoracic surgery,and divided these into appropriate areas of practice. We have reviewed the specific interventions that may beincluded in an enhanced recovery programme, including: pre-optimisation; minimising fasting time; thrombo-embolic prophylaxis; choice of anaesthetic and analgesic technique and surgical approach; postoperative rehabilita-tion; and chest drain management. Using the currently available evidence, the design and implementation of anenhanced recovery programme based on this review in selected patients as a package of care may reduce morbidityand length of hospital stay, thus maximising utilisation of available resources. . Correspondence to: A. A. KleinEmail: [email protected]: 30 September 2012
Thoracic anaesthesia and surgery is an expanding spe-
Department of Health show that surgery for all forms
cialty due to the increasing prevalence of lung cancer
of cancer now accounts for nearly a quarter of the
and the development of new surgical procedures. Mor-
national cancer budget [4]; if projections for a sus-
tality from lung cancer remains high; one person in
tained increase in demand for cancer services are to be
the UK dies as a result every 15 min [1]. In the major-
met, more efficient utilisation of resources will be
ity of instances, surgical resection remains the best
needed in the current era of financial austerity. Mini-
hope for cure [2]. Over the last decade, the number of
mising length of hospital admission has been identified
pulmonary resections performed for lung cancer has
as a key means to increase capacity whilst reducing
risen from 3112 in 2001–2002 to 5265 in 2009–2010,
costs, and is a major objective of the Cancer Reform
an increase of almost 60% [3]. Figures from the
Strategy [4]. A growing body of evidence suggests that
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
inpatient stay after elective surgery can be reduced by
2000 to 2012. To achieve maximum sensitivity of the
the introduction of an enhanced recovery programme
search and indentify relevant studies, the following
(ERP) [5], which is a series of evidence-based prac-
thesaurus terms were applied: ‘pulmonary surgical
tices, serving to optimise the patient before surgery,
procedures’; ‘early ambulation’; ‘thorax surgery’; and
minimise the physical and psychological stress associ-
‘perioperative period’. Free‐text items searched for
ated with the procedure and promote restoration of
were: ‘enhanced recovery’; ‘patient recovery’; ‘fasting’;
function [6]. Numerous studies demonstrate the value
‘risk factors’; ‘medical optimisation’; ‘day of surgery
of enhanced recovery programmes in the surgical
admission’; ‘length of stay’; ‘suction’; ‘early ambula-
management of colorectal [7], breast [8], pancreatic
tion’; ‘mobilisation’; ‘discharge’; ‘quality indicators’;
[9] and urological [10] malignancies; however, there is
‘healthcare’; ‘pre-admission’; and ‘pain relief’. The
a relative paucity of work in thoracic surgery in gen-
search results were limited to English language stud-
eral and lung cancer in particular. The National
ies. A total of 813 studies were initially identified, and
Institute for Health and Clinical Excellence (NICE) has
two authors (NJ and AK) selected 95 articles for more
recently recommended that further work should be
detailed study based on their relevance to the topic of
undertaken into the benefits of an ERP in this group
of patients [11]. This article reviews the evidence for
surgery. Each article was examined and recommenda-
individual peri-operative interventions in patients pre-
tions were made based on the best level of evidence
senting for thoracic surgery, and may be used to form
the basis of local enhanced recovery programmes.
A comprehensive literature search was performed on
It is a basic tenet of enhanced recovery that patients
both MEDLINE and Embase using the National
should be in the best possible condition for surgery,
Health Service health database advanced search inter-
modifiable risk factors should be addressed and co-
face, which includes the Cumulative Index to Nursing
morbidities optimised before surgery. Ideally, this is
and Allied Health Plus (CINAHL), the British Nurs-
undertaken by the general practitioner in the period
ing Index (BNI) and the Allied and Complementary
following diagnosis whilst awaiting treatment, or, at
Medicine Database (AMED), accessing articles from
the latest, at pre-operative assessment. Table 1 summa-
Table 1 Recommendations for pre-operative care as part of an enhanced recovery programme after thoracic surgery.
Investigated and treated before surgery if possible [13–19]
Screening for malnutrition and nutritional support given to risk patients [20–23]
Advised to stop smoking before surgery and given appropriate support [23–27]
Medical therapy should be optimised before surgery [28–30]
Pulmonary rehabilitation considered before surgery to improve exercise
Detailed assessment carried out to facilitate same-day admission and reduce
Used to facilitate informed consent and appropriate resource allocation [36, 37]
Patients and their families should receive detailed oral and written information
about hospital stay, the recovery process and discharge [38–40]
Releases bed capacity and minimises hospital stay [41]
Anxiolytic premedication can be given without delaying recovery, but use with
Minimise ‘nil-by-mouth’ and consider carbohydrate beverage 2 h preoperatively
All patients should be assessed and anti-embolism stockings or mechanical
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
rises the key aspects of pre-optimisation included in
resulted in a significant reduction in intensive care
and hospital stay. These findings require confirma-
Anaemia is a common incidental pre-operative
finding and is associated with increased morbidity and
Smokers are more likely to die following surgery
mortality in the peri-operative setting [13]. It should
and have significantly greater odds of experiencing seri-
be investigated and treated before surgery if time per-
ous postoperative complications [24]. In patients with
mits. Peri-operative blood transfusion is the commonest
lung cancer undergoing pulmonary resection, smoking
method of raising haemoglobin concentration in anae-
cessation reduces postoperative mortality and morbid-
mic surgical patients, but it is associated with the risk of
ity [25]. No evidence of a paradoxical increase in pul-
acute transfusion reactions, immunosuppression, post-
monary complications among those who quit smoking
operative infection and longer hospital stay [14, 15].
within two months of undergoing thoracotomy has
Alternative strategies to correct even minor degrees of
been demonstrated [26]. The NICE guidelines on the
anaemia (haemoglobin concentration < 12 g.lÀ1 in
diagnosis and treatment of lung cancer [11] recom-
females, < 13 g.lÀ1 in males) before surgery, which have
mend that all patients should be advised to stop smok-
been noted to be highly prevalent in recent studies [16],
ing as soon as the diagnosis of lung cancer is suspected;
can significantly reduce the need for transfusion and the
however, surgery should not be postponed to allow this.
resultant increase in morbidity and mortality [17].
All patients should be offered nicotine replacement and
Although studies have examined the utility of iron sup-
other therapies to help stop smoking [27].
plementation and erythropoietin in the context of
Chronic obstructive pulmonary disease (COPD) is
patients with lung cancer undergoing adjuvant treat-
very common in patients with lung cancer, and is a
ment with chemo- or radiotherapy, none have investi-
risk factor for peri-operative pulmonary complications.
gated their use before surgery [18, 19].
Whilst intuitively one would expect that pharmacologi-
Malnutrition is another common finding in
cal treatment would improve outcome, there are few
patients with cancer and is associated with impaired
data in patients with either newly diagnosed or estab-
lished COPD undergoing lung resection to substantiate
muscle fatigue and tissue wasting following surgery.
this. Data that exist suggest that commencing a long-
This results in delayed recovery and prolonged
acting bronchodilator in patients with untreated COPD
length of stay [20]. The European Society for Nutri-
significantly improves respiratory symptoms and pul-
tion and Metabolism Guidelines [21] recommend
monary function [28]. The addition of inhaled steroid
that all patients should be screened for malnutrition,
may also reduce postoperative complications [29].
and those with severe increased risk (weight loss 10–
Intensive pre-operative respiratory physiotherapy com-
15% within 6 months, BMI < 18.5 kg.mÀ2, Subjective
bined with optimised drug treatment (inhaled bron-
Global Assessment Grade C, or serum albumin
chodilators or corticosteroids) in patients considered
< 30 g.lÀ1) should receive nutritional support for 10–
unfit for surgical resection can result in significant
14 days before major surgery. Up to 28% of patients
improvements in lung function to the extent that they
with operable lung cancer are reported to be at
can be reconsidered as surgical candidates [30]. Pre-
severe nutritional risk [22]. To date, no studies have
specifically examined the impact of pre-operative cor-
employed for selected patients with COPD and lung
rection of malnutrition in patients with lung cancer.
cancer to improve exercise capacity [31, 32].
One small prospective randomised trial has investi-gated the effect of micronutrient supplementation in
patients with non-small cell lung cancer and a nor-
mal body mass index for 10 days before lung resec-
undergo pre-operative assessment [33] to establish that
tion [23]. The combination of a-ketoglutaric acid
the patient is fit for the proposed surgery and anaes-
and 5-hydroxymethylfurfural not only improved exer-
thetic. There is some evidence that pre-operative
cise capacity and reduced oxidative stress but also
assessment may facilitate same-day admission, reduce
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
unnecessary cancellations and increase patient satisfac-
expectations in the pre-assessment clinic may improve
tion [34]. Assessments of exercise capacity such as
outcome [38, 39]. Detailed explanation of the intended
shuttle walk tests and stair climbing, together with for-
peri-operative pathway has also been shown to reduce
mal measurements of cardiopulmonary function, may
patient anxiety, pain and length of hospitalisation [40].
help decision-making in patients at high risk of post-operative dyspnoea [35].
Accurate prediction of peri-operative risk is funda-
Effective pre-assessment means that hospitalisation for
mental to the process of informed consent. It also
a day before surgery is unnecessary (Table 1). Same-
serves to identify those patients at higher risk, who
day admission for patients undergoing surgery for lung
may derive greater benefit from pre-optimisation and
cancer is practised in a number of institutions within
require more intensive postoperative care. The most
the UK [41]. The administration of routine anxiolytic
widely used clinical tool for predicting in-hospital
premedication has declined in recent years because of
mortality after general thoracic surgery is the Thoracic
concerns regarding delayed recovery. However, a
Surgery Scoring System (Thoracoscore). This system
Cochrane review of 17 randomised clinical trials
consists of nine variables, with a correlation between
(RCTs) comparing anxiolytic premedication (benzo-
observed and expected mortality of 0.99 [36]. Other
diazepines, opioids and beta-blockers) with placebo
well-recognised risk factors for postoperative morbidity
found no impediment to recovery [42]. Unfortunately,
and prolonged length of stay include age, obesity, poor
this review did not include patients undergoing tho-
pre-operative lung function (FEV1 or TLCO < 40%),
racic surgery, many of whom have impaired respira-
impaired functional capacity (VO2 max < 15 ml.kgÀ1.
tory function and in whom the use of sedatives could
minÀ1), ASA physical status, continued smoking, insu-
be hazardous. Thus, premedication can be employed
lin-dependent diabetes, chronic renal failure and regu-
in selected patients, but should be used with caution
lar pre-operative analgesic use [37]. Patients with
and increased vigilance. Same-day admission may lead
multiple risk factors may require more intensive use of
to the use of premedication becoming rarer, and many
resources, such as high dependency postoperative care
institutions may choose to omit it altogether from
or prolonged hospital stay, and may need to be man-
aged outside of the enhanced recovery programme. It
Pre-operative fasting causes metabolic and psycho-
is important that such patients are identified pre-oper-
logical stress. ‘Fasting from midnight’ has been com-
atively and appropriate arrangements are made. At the
mon practice in the past to reduce the risk of
same time, there is evidence that exploring patients’
pulmonary aspiration during anaesthesia and the
Table 2 Recommendations for intra-operative care as part of an enhanced recovery programme after thoracicsurgery.
In accordance with local policies and with knowledge of the patient’s
colonisation and resistance patterns [46, 47]
Use short-acting agents that facilitate early recovery; inhalational anaesthesia
may have advantages over intravenous techniques [49–54]
Lungs should be ventilated using a protective strategy with limited tidal
Prophylaxis should be considered in at-risk patients [64–68]
Patients’ tracheas should be extubated at the end of surgery if possible [73]
Minimally invasive, provided it does not compromise the curative intent of the
One chest drain should be used in preference to two [71]
Paravertebral analgesia should be used in preference to thoracic epidural [74]
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
immediate postoperative period. However, a review of
The use of short-acting anaesthetic agents seems
the evidence demonstrates that the pre-operative fast-
rational to facilitate early recovery. Inhalational anaes-
ing period for clear fluids can be reduced to 2 h with-
thesia has the theoretical disadvantage of inhibiting
out increasing complications [43], although specific
hypoxic pulmonary vasoconstriction; however, in clini-
data from patients of ASA status 3–4, such as many
cally relevant concentrations, it has no significant effect
thoracic surgical candidates, are lacking. There is some
on shunt fraction [49, 50] or arterial oxygen content
evidence that carbohydrate loading is associated with
during one-lung ventilation [51]. One randomised
faster recovery and shorter hospital stay [44].
study found that cerebral oxygen balance during lung
Thoracic surgery patients should be regarded as
surgery is less impaired under sevoflurane-based anaes-
high risk for postoperative venous thromboembolism
thesia compared with propofol; however, the clinical
(VTE). Recent NICE guidelines recommend that
implications of this finding need to be determined
mechanical VTE prophylaxis (anti-embolism stock-
[52]. Various reports have cited the relative benefits of
ings, intermittent pneumatic compression devices or
sevoflurane [53] or propofol [54] on peri-operative
foot impulse devices) should be commenced at admis-
cytokine balance in patients undergoing one-lung
sion [45]. Pharmacological VTE prophylaxis should
ventilation, but the results are conflicting and no firm
be added in patients who have a low risk of major
recommendations on choice of agent or technique can
bleeding, with either low molecular weight heparin or
unfractionated heparin for patients with renal failure.
One-lung ventilation induces cytokine release and
Prophylaxis should be continued until the patient no
activation of the pulmonary inflammatory response
longer has significantly reduced mobility. Care must
[55, 56]. Use of large tidal volumes can exacerbate
be taken in the timing of administration of pharma-
lung injury and is associated with an increased risk of
cological prophylaxis in patients who may receive
respiratory failure after pneumonectomy. Protective
regional anaesthetic blocks for their surgical proce-
mechanical ventilation, using low tidal volumes (5 ml.
kgÀ1), has been shown to reduce serum inflammatorymarkers and the incidence of postoperative pulmonary
dysfunction, such as relative hypoxia or newly devel-
There are a number of areas of intra-operative practice
oped lung infiltrates or atelectasis [57]. The effect of
that may be considered for inclusion in an enhanced
positive end-expiratory pressure on postoperative
recovery programme (Table 2). Prophylactic antibiotics
outcomes remains unclear [58]. Limited data suggest
have been shown to reduce infectious complications
that pressure-controlled ventilation may be associated
after thoracic surgery [46]. However, the current evi-
dence on what constitutes the most appropriate antibi-
reduced mean airway pressure [59] compared with
otic prophylaxis for this group of patients is poor, and
volume control. However, a recent review concluded
no guidelines exist. Importantly, these patients will
that the evidence for an effect on postoperative oxy-
often have suffered multiple episodes of respiratory
tract infection, and received numerous courses of anti-
Sodium and fluid overload are associated with
biotics before their surgery. Airway colonisation with
increased postoperative complications and prolonged
pathogens is a risk factor for the development of post-
hospitalisation. In patients undergoing lung surgery,
operative pulmonary infectious complications [47].
intra-operative fluids are frequently restricted as posi-
When selecting suitable prophylaxis, changes in the
tive fluid balance is one of the strongest risk factors
usual pattern of flora as a result of chronic colonisa-
for the development of postresection acute lung injury
tion and the potential development of antibiotic resis-
[61]. In addition, or as an alternative, to conventional
tance should be considered. Antibiotics should be
measurement of central venous pressure, several
given 60 min or less before ‘knife to skin’ in accor-
devices have been shown to predict fluid responsive-
dance with the World Health Organization (WHO)
ness in mechanically ventilated patients. In the main,
these devices rely on measurement of the cyclical vari-
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
ations in stroke volume or pulse pressure induced by
require shorter hospital stay than those undergoing
mechanical ventilation, but conditions during thoracic
conventional surgery [70]. However, this is a techni-
surgery (such as open chest, shunt during one-lung
cally demanding procedure and may require signifi-
ventilation) may limit their usefulness. In practice, it
has been shown that pulse pressure variation and
therefore, many surgeons perform limited open thora-
stroke volume variation may predict fluid responsive-
cotomy, which may be preferable from the standpoint
ness under certain circumstances [62, 63], but further
of safety and prognosis. Video-assisted thoracoscopic
research specific to thoracic surgery is needed before
surgical resection, undertaken by an appropriately
widespread use for goal-directed fluid therapy can be
skilled surgeon, should be offered to selected patients
with clinical stage-one lung cancer (no evidence of
Atrial fibrillation occurs relatively commonly after
tumour spread) where appropriate skill exists, and it is
pulmonary resection (12–30% after lobectomy), and is
likely that increasing familiarity with the technique
associated with significant morbidity and increased
and improved training, along with the publication of
length of stay and hospital costs [64]. An analysis of
ongoing research in this field, will lead to increased
the Society of Thoracic Surgeons database has identi-
use of such minimally invasive techniques.
fied five variables that predict postoperative atrial
Chest drains impede mobilisation and exacerbate
fibrillation: advancing age; increasing extent of opera-
pain in patients after thoracic surgery. There is some
tion; male sex; non-black race; and more advanced or
evidence from a recently published review that the use
large tumours [65]. No standard regimen has been
of one drain, as opposed to two or more, is associated
recommended to decrease the incidence of atrial fibril-
with reduced postoperative pain scores [71], and when
lation; however, evidence from prospective RCTs
no definite surgical requirement exists the use of one
supports the use of beta-blockers, diltiazem, intrave-
drain alone should be considered. Postoperative air
nous magnesium or amiodarone for the prevention of
leak is a frequent complication after pulmonary resec-
atrial fibrillation after pulmonary resection [66, 67].
tion for lung cancer. Air leak may prolong the need
The use of amiodarone in this setting is controversial
for chest drainage and delay discharge. Different types
due to the risk of acute lung injury; however, studies
of surgical sealants have been developed in an effort to
attest to the safety of this drug if the cumulative dose
try to prevent or reduce postoperative air leak; how-
ever, they are expensive and their efficacy is controver-sial. A systematic review found that although surgical
sealants do reduce postoperative air leak and the time
The traditional approach to pulmonary resection is a
to chest drain removal, this is not always associated
postero-lateral thoracotomy as this provides excellent
with a reduction in length of postoperative hospital
surgical access. However, this technique involves tran-
stay [72]. Until further research is available, the
section of a large muscle group, and it is believed that
routine use of sealants cannot be recommended.
this contributes to postoperative pain, reduced inspira-tory effort and impairment of arm movement.
Attempts have been made to decrease complications
Immediate tracheal extubation favours recovery by
by performing muscle-sparing limited thoracotomy
allowing early initiation of rehabilitation and re-intro-
using an antero-axillary or anterolateral approach, or,
duction of oral hydration and nutrition. Furthermore,
most recently, using video-assisted thoracoscopic surgi-
prolonged mechanical ventilation increases the risk of
cal (VATS) techniques. Such approaches are associated
acute lung injury, pulmonary infection, bronchial
with significantly less impairment of postoperative vital
stump disruption, bronchopleural fistula and persistent
capacity and improved exercise capacity compared
air leakage [73]. Predictors of prolonged postoperative
with postero-lateral thoracotomy [69]. In early-stage
intubation in patients undergoing thoracotomy for
lung cancer, evidence is accumulating that patients
lung resection include: intra-operative red blood cell
undergoing VATS may experience reduced pain and
transfusion; high pre-operative serum creatinine level;
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
more extensive surgical resection; and poor pre-opera-
may be preferable to use paravertebral blockade, in
tive lung function. Despite this, immediate tracheal ex-
association with multimodal analgesia as first-line
tubation should be planned in all patients unless
analgesia, and reserve epidural analgesia for high-risk
significant complications preclude such a strategy.
patients not expected to follow an enhanced recovery
Postoperative care in general and pain manage-
programme. These may include patients undergoing
ment and early mobilisation in particular are vital
chest wall resection or pneumonectomy. There is still
components of any enhanced recovery programme
controversy over the best method for insertion of the
(Table 3). Acute pain after thoracotomy prevents mo-
bilisation and causes patients distress, and is associated
regarding ultrasound-guided percutaneous injection vs
with an increased incidence of cardiopulmonary com-
surgical insertion; further studies in this area are
plications, including atelectasis, pneumonia, atrial
fibrillation and myocardial ischaemia. Persistent pain
Bed-rest is associated with deleterious conse-
is a frequent cause of delayed discharge and is associ-
ated with the development of chronic pain syndromes.
reduction in muscle mass and increased risk of VTE. It
Epidural analgesia is a core component of many
is possible to mobilise patients safely as early as 4 h
enhanced recovery programmes as it provides excellent
after lung resection surgery, with a positive benefit on
pain relief, attenuates the stress response to surgery
the requirement for supplemental oxygen and psycho-
and accelerates restoration of pulmonary and gastro-
logical recovery [76]. Incentive spirometry causes gen-
intestinal function. Furthermore, epidural analgesia
avoids the use of systemic opiods and their associated
transpulmonary pressure, with consequent expansion
side-effects. Thoracic epidurals are widely used in
of collapsed alveolar units, and has been used widely to
patients undergoing thoracotomy and are regarded by
prevent or treat postoperative pulmonary complica-
many as the ‘gold standard’ for pain relief following
tions. However, a systematic review of incentive spi-
pulmonary resection. However, their use is associated
with a number of complications including hypoten-
procedures found no evidence to support its use and it
sion, urinary retention and motor weakness; these can
cannot be recommended at present [77]. In contrast,
lead to inappropriate fluid loading, urinary catheterisa-
implementation of intensive chest physiotherapy in the
tion and delayed mobilisation, all contrary to the ethos
peri-operative period has been shown in to reduce the
of an enhanced recovery programme. This can be
risk of pulmonary complications and resultant hospital
overcome in patients undergoing thoracic surgery by
length of stay and costs of care after major lung resec-
using paravertebral regional blockade, which produces
tion [78]. However, the only randomised trial to inves-
only unilateral sympathetic blockade. A recent meta-
tigate the impact of physiotherapy after pulmonary
analysis [74] has confirmed that paravertebral block
resection concluded that there was no benefit over stan-
can produce comparable analgesia to an epidural, but
dard care [79]. Non-invasive ventilation has been rec-
with a lower incidence of side effects. Adjuncts includ-
ommended for the prophylaxis of postoperative
ing ketamine have also proven to be beneficial [75]. It
respiratory failure in patients who have undergone
Table 3 Recommendations for postoperative care as part of an enhanced recovery programme after thoracic surgery.
Pharmacological agents should be used in patients who have a low risk of
Suction is not routinely required and may prolong hospital stay [84]
A low threshold for drain removal should be used [83]
Mobilise as soon as possible after surgery [76]
Should be used to reduce complications and length of stay [48, 78]
Anaesthesia 2012 The Association of Anaesthetists of Great Britain and Ireland
Jones et al. | Enhanced recovery in thoracic anaesthesia
major surgery or who are at high risk of pulmonary
ery programme into surgical and anaesthetic practice
complications. It has been associated with improve-
has been slow [86]. However, there is no doubt that
ment in gas exchange [80] and reduced hospital stay
pressure will continue to be exerted to reduce hospital
[81], but may increase complications [82].
stay and costs [87], and that, for the moment at least,
Early removal of chest drains reduces pain, facilities
enhanced recovery programmes are here to stay.
mobilisation and accelerates recovery following thora-
Patient selection and safety are paramount, and it is
cotomy [83]. Drain management is not standardised
likely that a number of thoracic surgery patients will
and there are wide variations in practice, for example
be considered to be too high-risk to go through such a
whether to use a simple under-water seal or to apply
protocol. Patients undergoing certain procedures such
active suction. Some surgeons believe that suction
as pneumonectomy or chest wall resection should not
favours the apposition of parietal and visceral pleura,
be included in such a protocol. A graded implementa-
thus promoting the sealing of air leaks, whereas others
tion process may be considered, starting with relatively
believe that it increases the volume of air leaks and hin-
low-risk procedures and patients (ASA physical status
ders healing. A recent meta-analysis of six RCTs con-
1–2), progressing to selected higher-risk patients and
cluded that it is not necessary to use suction in the
expanding to include lobectomy and other longer
absence of a clinically important postoperative space,
procedures. Multidisciplinary involvement is vital and
and that earlier drain removal could result in shorter
surgical, nursing and physiotherapy input will be
hospital stays [84]. The majority of thoracic surgeons
required. This review of the literature may be used to
leave the chest drain in place until fluid output is less
form the basis for developing a local enhanced recov-
than 250 ml per day and the air leak has resolved. Hos-
ery programme in thoracic anaesthesia and surgery
pital length of stay is often prolonged because drainage
that may potentially lead to reduced hospital stay and
is too high or the air leak persists despite the patient
being otherwise ready for discharge. A number of stud-ies have demonstrated that a low threshold for drain
removal can be used safely, and that Heimlich valves or
No external funding or competing interests declared.
portable drainage systems can facilitate discharge in the
AAK is an Editor of Anaesthesia and this article has
presence of persistent air leak or effusion.
undergone an additional external review as a result.
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1. To clarify the indications for erectile dysfunction. 2. To prescribe the formulary choice vardenafil (Levitra®). Vardenafil, sildenafil (Viagra®) and tadalafil (Cialis®) are phosphodiesterase type-5 (PDE5) inhibitors and are licensed for the treatment of erectile dysfunction. Sildenafil was first introduced in the UK in 1998 and since then, the treatment options have expanded by the introd