The insertion of the Veress needle in the abdominal midline, at the umbilicus, poses serious risk to the life of patients. Therefore, further studies should be conducted to investigate alternative sites for Veress needle insertion.

Transitory, high intraperitoneal pressure (20 mmHg for 5 min) for insertion of the first trocar resulted in changes in HR, MAP, ETCO(2), and ITP that were within the normal range, and no adverse clinical effects were observed. Therefore, the use of transitory, high intraperitoneal pressure is recommended to prevent iatrogenic injury during blind insertion of the first trocar. Nevertheless, it is not clear that this method would be safe in patients with moderate to severe chronic obstructive pulmonary disease.

Veress needle insertion into the left hypochondrium for creation of pneumoperitoneum: diagnostic value of tests to determine the position of the needle in unselected patients Original Article Original Article Original Article Original Article Original Article Veress needle insertion into the left hypochondrium for creation Veress needle insertion into the left hypochondrium for creation Veress needle insertion into the left hypochondrium for creation Veress needle insertion into the left hypochondrium for creation Veress needle insertion into the left hypochondrium for creation of pneumoperitoneum: diagnostic value of tests to determine the of pneumoperitoneum: diagnostic value of tests to determine the of pneumoperitoneum: diagnostic value of tests to determine the of pneumoperitoneum: diagnostic value of tests to determine the of pneumoperitoneum: diagnostic value of tests to determine the position of the needle in unselected patients position of the needle in unselected patients position of the needle in unselected patients position of the needle in unselected patients position of the needle in unselected patients Punção com agulha de Veress no hipocôndrio esquerdo para a criação do Punção com agulha de Veress no hipocôndrio esquerdo para a criação do Punção com agulha de Veress no hipocôndrio esquerdo para a criação do Punção com agulha de Veress no hipocôndrio esquerdo para a criação do Punção com agulha de Veress no hipocôndrio esquerdo para a criação do pneumoperitônio: valor diagnóstico das provas de posicionamento da agulha em pneumoperitônio: valor diagnóstico das provas de posicionamento da agulha em pneumoperitônio: valor diagnóstico das provas de posicionamento da agulha em pneumoperitônio: valor diagnóstico das provas de posicionamento da agulha em pneumoperitônio: valor diagnóstico das provas de posicionamento da agulha em pacientes não selecionados pacientes não selecionados pacientes não selecionados pacientes não selecionados pacientes não selecionados OTÁVIO To assess the effectiveness of the Veress needle puncture in the left hypochondrium and the accuracy of the tests described for the intraperitoneal correct positioning of the tip of the Veress needle in an unselected population. Methods:Methods: Methods: Methods: Methods: Ninetyone patients consecutively scheduled for Videolaparoscopy had the abdominal wall punctured in the left hypochondrium. There were no exclusion criteria. The patients received general anesthesia and mechanical ventilation according to the protocol. After puncturing five tests were used to confirm the positioning of the needle tip within the peritoneal cavity: aspiration test -AT; resistance to infusion -Pres; recovery of the infused fluid -Prec, dripping test -DT, and test of initial intraperitoneal pressure -IIPP. The test results were compared with results from literature for groups with defined exclusion criteria. The results were used for calculating sensitivity (S) specificity (E), positive predictive value (PPV) and negative predictive value (NPV). Inferential...

Hemodynamic, blood gas and metabolic parameters in brief hypertensive pneumoperitoneum during first trocar introduction was investigated. It causes variations in MAP, pH, HCO3 and BE without adverse effects, and it may protect from iatrogenic injury.

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The present study evaluated the correlation between arterial CO2 and exhaled CO2 during brief high-pressure pneumoperitoneum. Patients were randomly distributed into two groups: P12 group (n=30) received a maximum intraperitoneal pressure of 12mmHg, and P20 group (n=37) received a maximum intraperitoneal pressure of 20mmHg. Arterial CO2 was evaluated by radial arterial catheter and exhaled CO2 was measured by capnometry at the following time points: before insufflation, once intraperitoneal pressure reached 12mmHg , 5 minutes after intraperitoneal pressure reached 12mmHg for the P12 group or 20mmHg for the P20 group, and 10 minutes after intraperitoneal pressure reached 12mmHg for the P12 group or when intraperitoneal pressure had decreased from 20mmHg to 12mmHg, for the P20 group. During brief durations of very high intraperitoneal pressure (20mmHg), there was a strong correlation between arterial CO2 and exhaled CO2. Capnometry can be effectively used to monitor patients during transient increases in artificial pneumoperitoneum pressure.