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Dive into the research topics where Birthe Klarskov is active.

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Featured researches published by Birthe Klarskov.


Pain | 2001

Characteristics and prediction of early pain after laparoscopic cholecystectomy.

Thue Bisgaard; Birthe Klarskov; Jacob Rosenberg; Henrik Kehlet

&NA; Small‐scale studies have suggested a large inter‐individual variation in early postoperative pain after laparoscopic cholecystectomy, emphasizing the need for improved analgesic treatment and valid predictors. We investigated prospectively the association between a preoperative nociceptive stimulus by ice water (cold pressor test), neuroticism, dyspepsia, patient history of biliary symptoms, intraoperative factors, and demographic information in 150 consecutive patients undergoing uncomplicated laparoscopic cholecystectomy for their influence on early postoperative pain. During the first postoperative week patients registered overall pain, incisional, visceral, and shoulder pain on a visual analogue scale and verbal rating scale, and daily analgesic requirements were noted. Throughout the first postoperative week overall pain showed a pronounced inter‐individual variability. Incisional pain dominated in incidence and intensity compared with visceral pain, which in turn dominated over shoulder pain. In a multivariate analysis model, preoperative neuroticism, sensitivity to cold pressor‐induced pain, and age were identified as independent risk factors for early postoperative pain. Our results suggest that future analgesic studies after laparoscopic cholecystectomy should focus on reduction of incisional pain.


Annals of Surgery | 2003

Preoperative dexamethasone improves surgical outcome after laparoscopic cholecystectomy: a randomized double-blind placebo-controlled trial.

Thue Bisgaard; Birthe Klarskov; Henrik Kehlet; Jacob Rosenberg

Objective: To determine the effects of preoperative dexamethasone on surgical outcome after laparoscopic cholecystectomy (LC). Summary Background Data: Pain and fatigue are dominating symptoms after LC and may prolong convalescence. Methods: In a double-blind, placebo-controlled study, 88 patients were randomized to intravenous dexamethasone (8 mg) or placebo 90 minutes before LC. Patients received a similar standardized anesthetic, surgical, and multimodal analgesic treatment. All patients were recommended 2 days postoperative duration of convalescence. The primary endpoints were fatigue and pain. Preoperatively and at several times during the first 24 postoperative hours, we measured C-reactive protein (CRP) and pulmonary function, pain scores, nausea, and number of vomiting episodes were registered. Analgesic and antiemetic requirements were recorded. Also, on a daily basis, patients reported scores of fatigue and pain before and during the first postoperative week and the dates for resumption of work and recreational activities. Results: Eight patients were excluded from the study, leaving 40 patients in each study group for analysis. There were no apparent side effects of the study drug. Dexamethasone significantly reduced postoperative levels of CRP (P = 0.01), fatigue (P = 0.01), overall pain, and incisional pain during the first 24 postoperative hours (P < 0.05) and total requirements of opioids (P < 0.05). In addition, cumulated overall and visceral pain scores during the first postoperative week were significantly reduced (P < 0.05). Dexamethasone also reduced nausea and vomiting on the day of operation (P < 0.05). Resumption of recreational activities was significantly faster in the dexamethasone group versus placebo group (median 1 day versus 2 days) (P < 0.05). Conclusion: Preoperative dexamethasone (8 mg) reduced pain, fatigue, nausea and vomiting, and duration of convalescence in patients undergoing noncomplicated LC, when compared with placebo, and is recommended for routine use.


Annals of Surgery | 2004

Liberal Versus Restrictive Fluid Administration to Improve Recovery After Laparoscopic Cholecystectomy: A Randomized, Double-Blind Study

Kathrine Holte; Birthe Klarskov; Dorte Stig Christensen; Claus Lund; Kristine Grubbe Nielsen; Peter Bie; Henrik Kehlet

Objective:The objective of this study was to investigate the effects of 2 levels of intraoperative fluid administration on perioperative physiology and outcome after laparoscopic cholecystectomy. Summary Background Data:Intraoperative fluid administration is variable as a result of limited knowledge of physiological and clinical effects of different fluid substitution regimens. Methods:In a double-blind study, 48 ASA I–II patients undergoing laparoscopic cholecystectomy were randomized to 15 mL/kg (group 1) or 40 mL/kg (group 2) intraoperative administration of lactated Ringer’s solution (LR). All other aspects of perioperative management as well as preoperative fluid status were standardized. Primary outcome parameters were assessed repeatedly for the first 24 postoperative hours and included pulmonary function (spirometry), exercise capacity (submaximal treadmill test), cardiovascular hormonal responses, balance function, pain, nausea and vomiting, recovery, and hospital stay. Results:Intraoperative administration of 40 mL/kg compared with 15 mL/kg LR led to significant improvements in postoperative pulmonary function and exercise capacity and a reduced stress response (aldosterone, antidiuretic hormone, and angiotensin II). Nausea, general well-being, thirst, dizziness, drowsiness, fatigue, and balance function were also significantly improved, as well as significantly more patients fulfilled discharge criteria and were discharged on the day of surgery with the high-volume fluid substitution. Conclusions:Intraoperative administration of 40 mL/kg compared with 15 mL/kg LR improves postoperative organ functions and recovery and shortens hospital stay after laparoscopic cholecystectomy.


Anesthesia & Analgesia | 1999

Multi-regional local anesthetic infiltration during laparoscopic cholecystectomy in patients receiving prophylactic multi-modal analgesia: a randomized, double-blinded, placebo-controlled study.

Thue Bisgaard; Birthe Klarskov; Viggo B. Kristiansen; Torben Callesen; Svend Schulze; Henrik Kehlet; Jacob Rosenberg

UNLABELLED Pain is the dominant complaint after laparoscopic cholecystectomy. No study has examined the combined effects of a somato-visceral blockade during laparoscopic cholecystectomy. Therefore, we investigated the effects of a somato-visceral local anesthetic blockade on pain and nausea in patients undergoing elective laparoscopic cholecystectomy. In addition, all patients received multi-modal prophylactic analgesic treatment. Fifty-eight patients were randomized to receive a total of 286 mg (66 mL) ropivacaine or 66 mL saline via periportal and intraperitoneal infiltration. During the first 3 postoperative h, the use of morphine and antiemetics was registered, and pain and nausea were rated hourly. Daily pain intensity, pain localization, and supplemental analgesic consumption were registered the first postoperative week. Ropivacaine reduced overall pain the first two hours and incisional pain for the first three postoperative hours (P < 0.01) but had no apparent effects on intraabdominal or shoulder pain. During the first 3 postoperative h, morphine requirements were lower (P < 0.05), and nausea was reduced in the ropivacaine group (P < 0.05). Throughout the first postoperative week, incisional pain dominated over other pain localizations in both groups (P < 0.01). We conclude that the somato-visceral local anesthetic blockade reduced overall pain during the first 2 postoperative h, and nausea, morphine requirements, and incisional pain were reduced during the first 3 postoperative h in patients receiving prophylactic multi-modal analgesic treatment. IMPLICATIONS A combination of incisional and intraabdominal local anesthetic treatment reduced incisional pain but had no effect on deep intraabdominal pain or shoulder pain in patients receiving multimodal prophylactic analgesia after laparoscopic cholecystectomy. Incisional pain dominated during the first postoperative week. Incisional infiltration of local anesthetics is recommended in patients undergoing laparoscopic cholecystectomy.


Surgical Endoscopy and Other Interventional Techniques | 2002

Microlaparoscopic vs conventional laparoscopiccholecystectomy

Thue Bisgaard; Birthe Klarskov; R. Trap; Henrik Kehlet; Jacob Rosenberg

Background: Downsizing the port incisions may reduce pain after laparoscopic cholecystectomy. Methods: In a double-blind controlled study, 60 patients were randomized to undergo either microlaparoscopic cholecystectomy using one 10-mm and three 3.5-mm trocars (3.5-mm LC) or traditional laparoscopic cholecystectomy using two 10-mm and two 5-mm trocars (LC). Incisional pain at each port incision and overall pain were recorded for 1 week after the operation. Fatigue, nausea and vomiting, pulmonary function, and cosmetic results were also measured. Results: Data from 52 patients were analyzed; eight patients were excluded from the study for various reasons. One patient was converted from 3.5-mm LC to LC due to technical problems with the 3.5-mm optic. In the 3.5-mm LC group (n = 25), incisional pain was significantly decreased in the 1st postoperative week as compared with the LC group (n = 27) (p <0.01). In both groups, pain scores at the supraumbilical 10-mm port were significantly higher compared with other port sites (p <0.05). The cosmetic results were significantly better in the 3.5-mm LC group (p <0.01). There were no significant differences in any of the other variables. Conclusion: The use of 3.5-mm trocars is feasible in LC, and it both reduces incisional pain and improves the cosmetic result.


British Journal of Surgery | 2013

Evaluation of a fast-track programme for patients undergoing liver resection.

Nicolai A. Schultz; Peter Nørgaard Larsen; Birthe Klarskov; Lise Munk Plum; Hans-Jørgen Frederiksen; Bo Marcel Christensen; Henrik Kehlet; Jens Hillingsø

Recent developments in perioperative pathophysiology and care have documented evidence‐based, multimodal rehabilitation (fast‐track) to hasten recovery and to decrease morbidity and hospital stay for several major surgical procedures. The aim of this study was to investigate the effect of introducing fast‐track principles for perioperative care in unselected patients undergoing open or laparoscopic liver resection.


Surgical Endoscopy and Other Interventional Techniques | 2000

Pain after microlaparoscopic cholecystectomy

Thue Bisgaard; Birthe Klarskov; R. Trap; Henrik Kehlet; Jacob Rosenberg

AbstractBackground: Laparoscopic cholecystectomy (LC) is traditionally performed with two 10-mm and two 5-mm trocars. The effect of smaller port incisions on pain has not been established in controlled studies. Methods: In a double-blind controlled study, patients were randomized to LC or cholecystectomy with three 2-mm trocars and one 10-mm trocar (micro-LC). All patients received a multimodal analgesic regimen, including incisional local anesthetics at the beginning of surgery, NSAID, and paracetamol. Pain was registered preoperatively, for the first 3 h postoperatively, and daily for the 1st week. Results: The study was discontinued after inclusion of 26 patients because five of the 13 patients (38%) randomized to micro-LC were converted to LC. In the remaining 21 patients, overall pain and incisional pain intensity during the first 3 h postoperatively increased in the LC group (n= 13) compared with preoperative pain levels (p < 0.01), whereas pain did not increase in the micro-LC group (n= 8). Conclusions: Micro-LC in combination with a prophylactic multimodal analgesic regimen reduced postoperative pain for the first 3 h postoperatively. However, the micro-LC led to an unacceptable rate of conversion to LC (38%). The micro-LC instruments therefore need further technical development before this surgical technique can be used on a routine basis for laparoscopic cholecystectomy.


European Journal of Surgery | 1999

Short convalescence after inguinal herniorrhaphy with standardised recommendations: duration and reasons for delayed return to work

Torben Callesen; Birthe Klarskov; Karsten Bech; Henrik Kehlet

OBJECTIVE To provide a detailed description of post-herniorrhaphy convalescence. DESIGN Prospective, descriptive, consecutive questionnaire case series. SETTING Public university hospital, Denmark. PATIENTS 100 consecutive patients treated for inguinal hernia. INTERVENTION Elective open inguinal herniorrhaphy under local anaesthesia. One day convalescence for light/moderate and three weeks for strenuous physical activity was recommended. MAIN OUTCOME MEASURE Duration of absence from work or main recreational activity. RESULTS Overall median absence (including the day of operation) was 6 days (interquartile range 1-16). For unemployed patients it was 1 day (0-7), for patients with a light or moderate workload 6 days (3-12), and for those with a heavy workload 25 days (21-37). Among the 64 patients, who did not follow the recommendations, pain was contributory in 33 and advice from the general practitioner in 12. Pain was the main cause of impairment of activities of daily living. CONCLUSION Well-defined recommendations for convalescence may, together with improved management of postoperative pain, shorten convalescence; they are essential in the evaluation of effects of different surgical techniques of herniorrhaphy on convalescence.


British Journal of Surgery | 2004

Prospective analysis of convalescence and early pain after uncomplicated laparoscopic fundoplication

Thue Bisgaard; M. Støckel; Birthe Klarskov; Henrik Kehlet; Jacob Rosenberg

The aim of this study was to define factors that limit a short period of convalescence and to characterize the pain experienced after laparoscopic fundoplication.


Archives of Surgery | 2001

Factors Determining Convalescence After Uncomplicated Laparoscopic Cholecystectomy

Thue Bisgaard; Birthe Klarskov; Jacob Rosenberg; Henrik Kehlet

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Henrik Kehlet

University of Copenhagen

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Thue Bisgaard

University of Copenhagen

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Nicolai A. Schultz

Copenhagen University Hospital

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R. Trap

University of Copenhagen

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Torben Callesen

Penn State Milton S. Hershey Medical Center

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