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Biomedical subjects

A Jabor

Publications and source records attributed to A Jabor.

At least 19 recordsLinked to original sources
PubMed2003

[Relation of natriuretic peptides (BNP, NT-proBNP) to total mortality. A 4-year follow-up of patients].

The paper deals with a group of 157 patients followed for the period of four years in view of the relation of concentrations of BNP or NT-proBNP to overall mortality. In the introduction the authors describe their experience with natriuretic peptides; their own data follow. The Kaplan-Meier analysis of probability of survival proved to possess a strong predictive efficiency of the concentrations of BNP or NT-proBNP for overall mortality of the observed cohort.

Follow-Up Studies↗
PubMed2002

Laparoscopic lymph node dissection using ultrasonically activated shears: comparison with electrosurgery.

PURPOSE: To assess and compare perioperative parameters in two groups of patients treated by different laparoscopic techniques of lymph node dissection (LND) for gynecologic cancer. PATIENTS AND METHODS: Between April 1996 and March 2001, 59 consecutive women with microinvasive cervical cancer (N = 5) or clinical stage I endometrial cancer (N = 54) underwent laparoscopic LND during a primary staging procedure using an electrosurgery (ELC) or ultrasonic (US) operative technique. The two groups were compared for perioperative outcomes. Differences between the two groups were determined by the Wilcoxon's rank-sum test. RESULTS: Laparoscopic LND and other staging procedures were completed successfully in 58 women (98.3%). There were no statistically significant differences between the groups with regard to perioperative outcomes (operation time, time for LND, blood loss, hospital stay, complications), but there was a significant difference (P = 0.0008) in the number of lymph nodes harvested: a mean of 13.7 in the ELC group and 17.5 in the US group. The pathologists found that the reading of histology slides was easier after US dissections because of the greater depth of thermal injury in the lymphatic tissue in ELC group. CONCLUSION: The US operative technique ensures efficient coagulation, cutting, dissection, and grasping for laparoscopic LND in patients with cervical and endometrial cancer.

Adult↗
PubMed2002

Comparison of two procedures for sentinel lymph node detection in patients with endometrial cancer: a pilot study.

OBJECTIVE: The purpose of this study was to assess the feasibility and contribution of two intraoperative procedures of lymphatic mapping and sentinel node detection using a blue dye in surgically-staged patients with early stage endometrial cancer. METHODS AND MATERIALS: In 25 cases of endometrial cancer, patent blue-V was injected into the subserosal myometrium (13 cases, SM group) or cervico-subserosal myometrium (12 cases, CSM group) during a surgical staging procedure. Laparoscopically-assisted vaginal hysterectomy and pelvic lymphadenectomy were completed successfully in 23 women out of 24 laparoscopically-staged patients (95.8%). One patient with FIGO stage IIa was indicated for a radical abdominal surgery. RESULTS: A deposition of the blue dye was found in at least one pelvic lymph node (LN) in eight out of 13 cases (61.5%) in the SM group compared with ten out of 12 cases (83.3%) in the CSM group (p = 0.378). The mean number of dye-colored LN (DCLN) was 1.15 (SM group) and 2.5 (CSM group), respectively (p = 0.05). The rate of DCLN/LN was 15/188 (SM group) versus 30/190. respectively (p = 0.03). An uptake of the blue bye was observed in a total of 45 out of 388 LN. CONCLUSION: An intraoperative combination of cervico-subserosal myometrium application of the blue dye allows successful detection (83.3%) of sentinel LN in patients with endometrial cancer. Comparing SM and CSM groups the statistical significant difference was found in the DCLN/LN rate and mean number of sentinel lymph nodes (p = 0.03, p = 0.05, respectively). Clinical validity of this surgical procedure must be assessed prospectively.

Aged↗
PubMed2002

Inflammatory response and tissue trauma in laparoscopic hysterectomy: comparison of electrosurgery and harmonic scalpel.

OBJECTIVE: Our aim was to quantify and compare clinical outcome and surgical inflammatory response and tissue trauma after laparoscopic hysterectomy for a benign disorder which was performed by electrosurgery or harmonic scalpel. METHODS: Sixty patients scheduled for laparoscopic hysterectomy were selected according to patient preference to undergo either electrosurgery or an ultrasonic operative technique. Blood samples for assay of markers of tissue trauma (C-reactive protein, interleukin-6, creatine kinase, white blood cell count) were taken preoperatively, on the first and third postoperative day. Three patients with intraoperative complications or incomplete records were excluded from tissue analysis. RESULTS: No differences were present in the demographic characteristics and clinical outcomes (blood loss, uterine weight, operating time and hospital stay) in 57 uncomplicated laparoscopic hysterectomies. Both electrosurgery (n = 36) and use of the harmonic scalpel (n = 21) resulted in statistically significant changes in the inflammatory and systemic immune response in comparison with preoperative values. No significant differences were observed in the studied inflammatory and tissue markers (C-reactive protein, interleukin-6, creatine kinase and white blood cells) between the compared groups. CONCLUSION: The harmonic scalpel and electrosurgery in laparoscopic hystsrectomy were equally traumatic in terms of surgical inflammatory response and tissue trauma.

Adult↗
PubMed2002

Laparoscopic surgery for endometrial cancer: long-term results of a multicentric study.

PURPOSE OF INVESTIGATION: Surgical treatment of endometrial cancer was traditionally done by laparotomy, however the laparoscopic approach has gained wider acceptance by gynecologic surgeons. The primary aim of the study was to report the perioperative and postoperative outcomes of laparoscopic surgery in a major group of patients with endometrial cancer. The second aim was to study the long-term results of laparoscopic surgery in patients with endometrial cancer. MATERIAL AND METHOD: A prospective multicentric study was conducted at three oncolaparoscopic centres; 221 women who had undergone laparoscopic (177 women) or abdominal (44 women) hysterectomy with bilateral salpingo-oophorectomy and lymphadenectomy were included in the study. Women with stage IA, grade I did not undergo lymphadenectomy unless they had a high risk histologic tumor type. Lymph node dissection was performed in 145 women with disease greater than IA or grades other than 1. RESULTS: The mean age and weight were similar in the compared laparoscopic and open groups. Perioperative blood loss was comparable in both groups (211.2 ml vs 245.7 ml, respectively) without any significant consecutive changes in serum hemoglobin values. Although the length of operating time for the laparoscopic surgery was significantly longer than the time for the laparotomy procedure (163.3 min vs 114.7 min, p < 0.0001), the laparoscopic patients were discharged from hospital much earlier at 3.9 days (range 2-16) after the laparoscopic procedure compared with 7.3 days (range 5-16) after the abdominal procedure (p < 0.0001). The difference in surgical complications between groups was statistically insignificant (p = 0.58). Similar long-term results were noted in both groups. With a median follow-up of 33.6 months for the laparoscopy group and 45.2 months for the open group, there were no significant differences in tumor recurrence (p = 0.99] or recurrence-free survival (p = 0.86) between the two groups. CONCLUSION: The study illustrates that laparoscopically assisted surgical staging of endometrial cancer is safe as an open procedure. The laparoscopic approach may also be considered for endometrial malignancy which typically occurs in obese and elderly, high-risk women. Our analysis showed no difference with respect to recurrence or survival between the compared laparoscopic and the open group.

Adenocarcinoma↗
PubMed2002

Clinical outcome, inflammatory response and tissue trauma in total laparoscopic hysterectomy: comparison to laparoscopically-assisted vaginal hysterectomy.

OBJECTIVE: Our aim was quantify and compare the clinical outcome and surgical inflammatory response and tissue trauma between the total laparoscopic hysterectomy (TLH) and laparoscopically-assisted vaginal hysterectomy (LAVH). DESIGN: Clinical study. SETTING: Departments of Gynaecology, Obstetrics and Biochemistry, Hospital Kladno, Department of Biochemistry, Faculty Hospital Motol-Prague. METHODS: Fifty-eight patients scheduled for laparoscopic hysterectomy were selected according patients or doctor preference to undergo either TLH or LAVH operative technique. Blood samples for assay of markers of tissue trauma (C-reactive protein, interleukin-6, creatine kinase, cortisol, cystatin C, serotonin and white blood cells count) were taken preoperatively, on the first and third postoperative day. One patient with intraoperative complication (ureteral injury) was excluded from tissue analysis. RESULTS: No differences were present in the demographic characteristics and clinical outcomes (blood loss, complications and hospital stay) in fifty seven laparoscopic hysterectomies. The statistically significant difference was found only in duration of surgery (70 min in TLH group vs. 90 min in LAVH group, P < 0.05). This difference can be related to difference in uterine specimen weight (185 g in TLH group vs. 289 g in LAVH group, P < 0.02). Both the LAVH (n = 37) and TLH (n = 20) resulted in statistically significant changes in the inflammatory and systemic immune response in comparison with preoperative value. No significant differences were observed in the studied inflammatory and tissue markers between the studied operative techniques of laparoscopic hysterectomy. CONCLUSION: The total laparoscopic hysterectomy and laparoscopically-assisted vaginal hysterectomy were equally traumatic in terms of surgical inflammatory response and tissue trauma.

Adult↗
PubMed2001

Laparoscopic staging of endometrial cancer using laparosonic instruments: comparison with electrosurgery.

OBJECTIVE: To compare perioperative parameters in two groups of women with different laparoscopic operative techniques in surgical staging of endometrial cancer (EC). STUDY DESIGN: Thirty randomly allocated and laparoscopically treated women with EC. Fifteen patients were operated by electrosurgery, 15 patients by laparosonic operative technique. Differences between the two groups were determined by the Wilcoxon rank-sum test. Probability (P) of less than 0.05 was considered significant. SETTING: Department of Gynecology and Obstetrics, Endoscopic Training Center, Baby Friendly Hospital, Kladno, Czech Republic. RESULTS: Laparoscopy was successfully completed in 29 patients. Laparoscopy-assisted surgical staging of EC was performed based on the tumor grade and the depth of myoinvasion. In both groups, in total 18 and 5 women underwent pelvic lymphadenectomy (PLN) and infra-aortic lymph node sampling (IALS), respectively. Three patients had metastases in pelvic lymph nodes. In the electrosurgical hemostasis and laparosonic group the mean total time required to finish the whole operative procedure were 132.1 and 138.3 min, respectively, with no statistically significant difference (P=0.96). There were no significant differences between the groups in any intraoperative or postoperative follow-up variables, except for the number of excised lymph nodes where the difference between electrosurgery and laparosonic group (12.7 versus 18) was statistically significant (P=0.05). In one patient with intraoperative venous bleeding the laparosonic hemostasis was ineffective (successful procedure rate 93.3%). One patient from the electrosurgery group was converted to laparotomy due to injury to the epigastric vessels. This complication had no connection with the surgical techniques studied. CONCLUSION: It is concluded that both operative technique variants in laparoscopy-assisted surgical staging appear to be feasible and effective for patients with EC.

Adenocarcinoma↗
PubMed2001

Laparoscopic hysterectomy in obese women: a clinical prospective study.

OBJECTIVE: To compare perioperative and postoperative outcomes of laparoscopic hysterectomy (LH) in surgical management of gynecological conditions in two groups of different weight. METHODS: A prospective comparative clinical study of 271 LH performed for disease of female pelvic organs in a group of 54 obese patients (over 30 body mass index (BMI)) and in a group of 217 non-obese patients (less than 30 BMI). The following criteria were assessed: patient characteristics, indications for surgery, previous surgery, presence of adhesions, duration of procedure, blood loss, weight of specimen, hospital stay and complications. Statistical analysis was performed using the unpaired t-test and non-parametric Chi-square test when appropriate, with a significance level of P=0.05. RESULTS: Three non-obese patients were converted to laparotomy due to operative complications. Laparoscopy in the remaining 268 patients (98.89%) was completed successfully. There was no significant difference in estimated blood loss, presence and degree of adhesions, weight of specimen, length of hospital stay and postoperative complications between women with high BMI and those with low BMI. The rate of major operative complications (5.55% versus 3.22%) was higher in the obese group. The duration of the operation was longer in obese women. However, the significance of the difference was borderline (P=0.06).

Adult↗
PubMed2000

Comparison of two procedures for laparovaginal hysterectomy: a randomized trial.

OBJECTIVE: To compare peroperative parameters of two variants of a laparovaginal hysterectomy in surgical management of gynecological conditions. METHODS: A prospective randomized study of 70 laparovaginal hysterectomies performed by the same two surgeons for disease of female pelvic organs. The following criteria were studied: indication for surgery, previous surgery, duration of the procedure, recovery, hospital stay, blood loss, tissue damage markers, hysterectomy proportions and complication incidence. Statistical analysis was performed using the non-parametric chi(2)-test and non-parametric Fischer's exact probability test when appropriate, with a level of significance P=0.05. RESULTS: Totals of 38 (54.3%) laparoscopy-assisted vaginal and 31 (45.7%) vaginally assisted laparoscopic hysterectomies were performed for fibroma as the main indication. Conversion to laparotomy was applied in only one patient. The VALH group (P=0.01) showed both fewer procedures and shorter hospital stay with insignificant blood loss. CONCLUSION: The two variants of a laparovaginal hysterectomy appear to be safe and appropriate, effective procedures for women with gynecological conditions. Furthermore, vaginally assisted laparoscopic hysterectomy has been shown to be superior to laparoscopy-assisted vaginal hysterectomy in terms of shorter operating time and greater palliative effect upon the complex of uterosacral ligaments. Laparoscopic surgery can alter the relationship between vaginal and abdominal hysterectomy.

Adult↗
PubMed2000

Laparoscopic surgery in obese women with endometrial cancer.

STUDY OBJECTIVE: To analyze perioperative and postoperative outcomes of laparoscopic treatment of endometrial cancer in two groups of women of different weight. DESIGN: Prospective, multicenter clinical study (Canadian Task Force classification II-1). SETTING: Three laparoscopic oncology centers. PATIENTS: Sixty-five consecutive women with endometrial cancer, of whom 32 were not obese (weight <81. 7 kg) and 33 were obese (weight (3)81.7 kg, body mass index 30-40). INTERVENTION: Laparoscopic surgery. MEASUREMENTS AND MAIN RESULTS: Three patients (1 nonobese, 2 obese) in whom laparoscopy was converted to laparotomy were removed from data analysis. Laparoscopy in the remaining 62 (94.38%) was completed successfully. Hysterectomy and pelvic and paraaortic lymphadenectomies were performed based on tumor grade and depth of myometrial invasion. In both groups, 28 women underwent pelvic lymphadenectomy and 21 paraaortic lymph node dissection or sampling. Eight patients had metastases in pelvic or paraaortic nodes. Deep myometrial invasion over 50% was present in five obese and two nonobese women. Mean operating time was 166 and 172 minutes, respectively. The rate of major complications and conversions was higher in the obese group (8 vs 5). CONCLUSION: Laparoscopic surgery is feasible in obese women and may also be considered for endometrial cancer, which typically occurs in obese women.

Body Mass Index↗
PubMed2000

Diagnosis of metabolic acid-base disturbances in critically ill patients.

We compare two commonly used diagnostic approaches, one relying on plasma bicarbonate concentration and "anion gap," the other on "base excess," with a third method based on physicochemical principles, for their value in detecting complex metabolic acid-base disturbances. We analyzed arterial blood samples from 152 patients and nine normal subjects for pH, PCO(2), and concentrations of plasma electrolytes and proteins. Ninety-six percent of the patients had serum albumin concentration < or = 3 SD below the mean of the control subjects. In about one-sixth of the patients, base excess and plasma bicarbonate were normal. In a great majority of these apparently normal samples, the third method detected simultaneous presence of acidifying and alkalinizing disturbances, many of them grave. The almost ubiquitous hypoalbuminemia confounded the interpretation of acid-base data when the customary approaches were applied. Base excess missed serious acid-base abnormalities in about one-sixth of the patients; this method fails when the plasma concentrations of the nonbicarbonate buffers (mainly albumin) are abnormal. Anion gap detected a hidden "gap acidosis" in only 31% of those samples with normal plasma bicarbonate in which such acidosis was diagnosed by the third method; when adjusted for hypoalbuminemia, it reliably detected the hidden abnormal anions. The proposed third method identifies and quantifies individual components of complex acid-base abnormalities and provides insights in their pathogenesis.

Acid-Base Equilibrium↗
PubMed2000

[Statistics for physicians--part I].

Authors present a series of papers describing basic statistical methods used in biomedical research and publications. Part one deals with parameters of description statistics.

Statistics as Topic↗
PubMed2000

[Statistics for physicians--part II].

Authors present a series of papers describing basic statistical methods used in biomedical research and publications. Part two deals with the normal distribution and logarithmic transformation of data together with the simple strategy for data description in groups of different type of data distribution.

Statistics as Topic↗
PubMed2000

[Statistics for physicians--part III].

Authors present a series of papers describing basic statistical methods used in biomedical research and publications. Part three deals with statistical hypotheses, type I and type II errors, one-sided or two-sided tests. Finally, the most frequent types of testing the differences are described.

Statistics as Topic↗
PubMed2000

Does hysterectomy without salpingo-oophorectomy influence the reoperation rate for adnexal pathology? A retrospective study.

OBJECTIVE: The aim of this study was to assess if the abdominal, vaginal and laparoscopic approach to hysterectomy can affect the incidence of ovarian or adnexal pathology after hysterectomy without salpingo-oophorectomy. METHODS: In this study 17 cases out of 617 hysterectomies were found to have development of adnexal pathology; reoperation rate was 2.75%. RESULTS: The reoperation rate was significantly different (p < 0.006) in the observed approaches to hysterectomy (TAH 5.67%, VH 0.69%, LH 3.18%). The greatest difference was found between the abdominal and vaginal groups. CONCLUSION: Our study results have sufficiently shown that the relationship of a number of factors (age, primary histologic findings, smaller peritoneal trauma) had an important impact on a significant difference in reoperation rate between vaginal, laparoscopic and namely abdominal hysterectomies in female patients with preserved adnexa.

Adult↗
PubMed1999

Evaluation of perioperative stress after laparoscopic and abdominal hysterectomy in premalignant and malignant disease of the uterine cervix and corpus.

OBJECTIVE: To compare the differences in laparoscopic and abdominal hysterectomy in surgery of premalignant and malignant uterine disease. DESIGN: Prospective study. SETTING: Baby Friendly Hospital, Kladno, Czech Republic. SUBJECT: A total 32 patients underwent hysterectomies for premalignant and malignant uterine conditions. INTERVENTIONS: Patients were assigned to either laparoscopic-assisted vaginal hysterectomy or total abdominal hysterectomy (LAVH), with bilateral salpingo-oophorectomy and lymph node dissection. MEASURES: Clinical data and value of total creatine kinase and C-reactive protein were measured. RESULTS: All 32 procedures were successfully completed. There were no major complications. Mean order of CRP concentrations was significantly lower (p = 0.001) in patients with LAHV. Mean order of total CK activities was also significantly lower in these patients (p = 0.003) and the median hospital stay was 4.1 days (p = 0.05). CONCLUSIONS: Laparoscopic procedures were followed by shorter hospital stays and the proposed evaluation of tissue damage using serum enzymes and proteins demonstrates that the laparoscopic approach to hysterectomy and accessory procedures has considerable importance in decreasing perioperative patient stress. The presented results are supported by clinical experience and should have a decisive impact on the chosen approach to the course and duration of convalescence in patients undergoing a hysterectomy in premalignant and malignant disease of the uterine cervix and corpus.

C-Reactive Protein↗
PubMed1999

The role of laparoscopic hysterectomy and lymph node dissection in treatment of endometrial cancer.

BACKGROUND: The development of new diagnostic and surgical methods has brought a differentiated approach to surgery of endometrial cancer. The aim of this study was to verify the peri-and postoperative differences between laparoscopic and open procedure and prepare protocol for a second phase follow-up multicentric study. METHODS: The study includes 133 women with indications for surgery of endometrial cancer. A prospective multicentric study was undertaken at four centres in the Czech Republic. We evaluated differences in the peri-and postoperative outcomes. Sixty-eight patients treated laparoscopically were compared with 65 patients treated by an open procedure of hysterectomy and lymphadenectomy. RESULTS: Three patients with conversion were withdrawn from the study and another 65 patients (97%) from the laparoscopic group successfully completed the procedures. Laparoscopic and abdominal hysterectomy with lymphadenectomy were performed based on the grade of the tumor and depth of myometrial invasion. Out of both groups, 75 patients underwent pelvic lymphadenectomy and 21 women underwent para-aortic lymph node dissection or sampling. Eleven patients had metastases in the pelvic or para-aortic nodes (11.7% versus 4.7% in the open procedure group). Deep myoinvasion over 50% was more frequently present in the group of abdominally-treated women. The rate of major complications (18 versus 14 cases) was higher in the laparoscopic group, but more wound infections were seen in the open procedure group. CONCLUSION: The study illustrates that the laparoscopic approach to surgery is feasible and it also may be considered for endometrial cancer which typically occurs in at risk and obese women. Recovery time is reduced by avoiding an abdominal incision. Laparoscopic surgery was performed successfully in 65 women and in 8 cases (11.7%) malignant spread outside to the regional lymph nodes was found. However, the selection of patients for laparoscopy should be done considering optimal benefit and safety.

Adult↗